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MICROLINE 720/721 Printer Handbook Every effort has been made to ensure that the information in this document is complete, accurate and up-to-date. OKI assumes no responsibility for the results of errors beyond its control. OKI also cannot guarantee that changes in software and equipment made by other manufacturers, and referred to in this handbook, will not affect the applicability of the information in this manual. Mention of software products manufactured by other companies does not necessarily constitute endorsement by OKI. OKI and MICROLINE are registered trademarks of OKI Electric Industry Company, Ltd.. IBM and PC are registered trademarks of International Business Machines Corporation. Epson is a registered trademark of Seiko Epson Corp. Lotus and 1-2-3 are registered trademarks of Lotus Development Corporation. Microsoft and MS-DOS are registered trademarks and Windows is a trademark of Microsoft Corporation. WordPerfect is a registered trademark of WordPerfect Corporation. Important Safety Instructions Your OKI printer has been carefully designed to give you years of safe, reliable performance. As with all electrical equipment, however, there are a few basic precautions you should take to avoid hurting yourself or damaging the unit: • Read the setup and operation instructions in this manual carefully. Be sure to save it for future reference. • Read and follow all warning and instruction labels on the printer itself. • Unplug the printer before you clean it. Use only a damp cloth; do not use liquid or aerosol cleaners. • Place your printer on a firm, solid surface. If you put it on something unsteady, it might fall and be damaged; if you place it on a soft surface, such as a rug, sofa, or bed, the vents may be blocked, causing it to overheat. • To protect your printer from overheating, make sure no openings on the printer are blocked. Don’t put the printer on or near a heat source, such as a radiator or heat register. If you put the printer in any kind of enclosure, make sure it is well ventilated. • Do not put anything into the ventilation slots on the sides of printer, you could get a shock or cause a fire. • The printhead can get quite hot when it has been printing for a length of time. Do not touch the printhead untill it has had a chance to cool off. • Do not use your printer near water, or spill liquid of any kind into it. • Be certain that your power source matches the rating listed on the back of the printer. If you’re not sure, check with your dealer or with your local power company. • Your printer has a grounded plug as a safety feature, and it will only fit into a grounded outlet. If you can’t plug it in, chances are you have a non-grounded ontlet; contact an electrician to have it replaced with a grounded outlet. Do not use an adapter to defeat the grounding. • To avoid damaging the power cord, don’t put anything on it or place it where it will be walked on. If the cord becomes damaged or frayed, replace it immediately. • If you’re using an extension cord or power strip with the printer, make sure that the total of the amperes required by all the equipment on the extension is less than the extension’s rating. Generally, the total ratings of all equipment plugged into any one power line should not exceed 15 amperes. Don’t exceed this unless you know that the power line your equipment is plugged into has a rating above 15 amperes. • Aside from the routine maintenance described in this handbook, don’t try to service the printer yourself; opening the cover may expose you to shocks or other hazards. Don’t make any adjustments other than those outlined in the manual – you might cause damage requiring extensive repair work. • If anything happens that indicates that your printer is not working properly or has been damaged, unplug it immediately and follow the procedures in Chapter 5. These are some of the things to look for: The power cord or plug is frayed or damaged. Liquid has been spilled into the housing, or the printer has been exposed to water. The printer has been dropped or its cabinet has been damaged. The printer doesn’t function normally when you’re following the operating instructions. • Screen jitter on your CRT may occur in an environment where the space between your printer and CRT is narrow (200 mm or less). In such cases, open up the space. Contents Introduction ............................................................................................................. 1 Chapter 1: Installation ........................................................................................... 3 Unpacking ................................................................................................................... 3 Removing Shipping Retainers ........................................................................ 4 Installing Ribbon Cartridge ...................................................................................... 5 Making Connections .................................................................................................. 6 Connection with Computer ............................................................................ 6 Connection with Power ................................................................................... 8 Chapter 2: Loading Paper ...................................................................................... 9 Loading Single-Sheet Paper .................................................................................... 11 Loading Rear-Feed Paper ........................................................................................ 14 Paper Handling ......................................................................................................... 21 Tear Feature ..................................................................................................... 21 Forms Tear-off Feature .................................................................................. 22 Paper Park Feature ......................................................................................... 22 Switching Paper Paths ................................................................................... 23 Chapter 3: Operation ............................................................................................ 25 Control Panel ............................................................................................................. 25 Print Mode ................................................................................................................. 27 Indicator Lights .............................................................................................. 27 Buttons ............................................................................................................. 28 Menu Mode ............................................................................................................... 32 Sample Menu .................................................................................................. 33 Summary of Menu Settings .......................................................................... 34 Menu Mode Indicator Lights ....................................................................... 37 Menu Mode Buttons ...................................................................................... 37 Resetting Menu to Factory Defaults ............................................................38 Performing Basic Tasks ............................................................................................ 39 Selecting Print Quality .................................................................................. 39 Selecting Character Pitch .............................................................................. 40 Testing Your printer ....................................................................................... 41 Resetting Top of Form ................................................................................... 45 Using Bar codes .............................................................................................. 45 Chapter 4: Working with Software ................................................................... 49 Basic Terminology .................................................................................................... 49 Printer Commands ......................................................................................... 49 Emulations ...................................................................................................... 50 Printer Drivers .......................................................................................................... 50 Compatible Printer Drivers (DOS) .............................................................. 50 Windows Printer Drivers .............................................................................. 51 Chapter 5: Problem Solving, Maintenance, & Service................................... 53 Problem Solving ....................................................................................................... 53 Maintenance .............................................................................................................. 56 Replacing the Ribbon Cartridge................................................................... 56 Clearing Paper Jams ...................................................................................... 59 Cleaning the Housing .................................................................................... 63 Accessories ................................................................................................................ 64 Replacement Parts .......................................................................................... 66 Appendix A: Specifications ................................................................................ 67 Appendix B: Menu Selections ............................................................................ 71 Explanation of Menu Items ..................................................................................... 74 Appendix C: Printer Commands........................................................................ 81 IBM Proprinter Printer Commands ....................................................................... 81 Epson FX Printer Commands ................................................................................. 85 OKI Microline (ML) Printer Commands ............................................................... 89 Appendix D: ASCII Character Codes ............................................................... 93 Lower ASCII Character Sets ................................................................................... 93 Upper ASCII Character Sets .................................................................................... 97 Epson International Character Substitutions ..................................................... 101 IBM International Character Substitutions ......................................................... 102 MICROLINE International Character Substitutions ......................................... 103 Code Page Character Sets ...................................................................................... 104 Appendix E: Interfacing .................................................................................... 107 Pin Assignments for Parallel Interface Signals .................................................. 107 Universal Serial Bus (USB) .................................................................................... 108 Installing the Serial Interface ................................................................................ 109 Pin Assignments for Serial Interface Signals ...................................................... 111 Introduction This Guide is arranged to help you get your new MICROLINE 720 or 721 printer set up and running quickly as well as providing you with more detailed information for future reference. Here’s how it’s organised: • Chapter 1 (Installation) shows you how to get your printer ready to run and how to connect it to your computer. • Chapter 2 (Loading Paper) explains how to load paper for any of the two methods of paper feed. • Chapter 3 (Operation) describes how to control your printer from the front panel. It also explains how to change the defaults, how to test your printer and how to use bar codes. • Chapter 4 (Working with Software) gives you information on selecting a driver and installing your printer on popular software packages. • Chapter 5 (Problem Solving/Maintenance/Service) gives helpful hints on how to solve common printer problems and how to maintain your printer in tip-top shape. • Appendices A through E contain a variety of reference material, including specifications, menu listings, lists of printer programming commands and ASCII characters. ML720/721 Printer Handbook 1 2 Introduction Chapter 1: Installation This chapter explains how to unpack and install your new printer. Unpacking Unpack your printer and make sure you have the following items. If you are missing any of these items, contact your dealer immediately for a replacement. • Printer • Ribbon cartridge • AC cord It is not included in case of some models. • Printer Handbook & Software on CD-ROM. Interface cable and paper are sold separately. ML720/721 Printer Handbook 3 Removing Shipping Retainers Tab 1. Open access cover by grasping tabs at either end and lifting. 2. Remove printhead shipping retainer (leave cover open for installation of ribbon). Shipping retainer 4 Installation Knob Paper separator " "mark 3. Hold the knob and remove the paper separator. Paper 4. Remove the protective material. separator Protictive material 5. Set and attach the post to the“∆”mark of the upper cover and the paper separator. " "mark Protictive material 6. Remove the protective material from the pull-up roller assembly. Pull-up roller assembly Installing Ribbon Cartridge 1. With access cover open, grasp printhead and slide it until it is centered on platen. 2. Remove ribbon cartridge from its packaging. Center printhead on platen ML720/721 Printer Handbook Important! Leave the clear plastic ribbon shield on the cartridge! 5 3. Holding ribbon cartridge with knob facing up and ribbon sheild facing platen, fit grooves on either side at back end of cartridge over pins on ribbon plate. Knob Ribbon shield Setting Headgap lever position Number of sheets 1 1 1 2 between 1 and 2 2 3 2 3 4 between 2 and 3 4 5 3 envelopes or extra-thick paper M Printhead 1 2 4. Lower front of cartridge over printhead until it snaps into place, then turn knob in direction of arrow (clockwise) to take up ribbon slack. 5. The headgap lever by the side of cartridge adjusts for different paper thicknesses. Set it for the number of sheets in the forms you’re using from 1 to 4; use setting 5 for envelopes or extra-thick paper. Adjust the setting up or down for the best print quality. Note: When the setting is set at 2~5, the printer automatically slows down for better print quality with thicker multipart forms. Knob 3 Headgap lever Important! Be sure to use only ribbons specifically for use with MICROLINE 720 series. For best results, use genuine OKI ribbons. Making Connections Connection with Computer There instructions are for the standard parallel interface and USB interface. Instructions for installation/connection of a serial interface are included with the serial interface accessory. For more information on the serial interface accessory, see Chapter 5. 6 Installation Pin assignments for the parallel, USB and the serial interfaces are listed in appendix E. You must supply the cable for connecting your printer to your computer. a. In the case of parallel interface cable 1. Make sure both printer and computer are OFF. 2. Locate interface port on back of printer. Interface port 3. Plug parallel interface cable into port and secure it in place with wire loops. Wire loops b. In the case of USB interface cable 1. Make sure both printer and computer are OFF. 2. Locate interface port on back of printer. USB port 3. Plug USB interface cable into port. ML720/721 Printer Handbook 7 Connection with Power 1. Make sure both printer and computer are OFF. 2. Plug power cord into back of printer. Plug other end into grounded outlet. Power cord Socket 3. Turn printer on. Printhead will cross back and forth along platen, and POWER light will come on. ALARM light will also come on, but don’t be concerned: it’s just telling you that there is no paper loaded. Power light Alarm light You’re now ready to load paper—proceed to Chaper2. 8 Installation Chapter 2: Loading Paper Your printer has provision for single-sheet paper feed from the top and for continuous-form paper feed from the rear. You can also install options: the Cut Sheet Feeder, which holds a stack of 100 sheets for feeding from the top and the Push and/or Pull Tractors for feeding continuous-form labels, heavy card stock or multi-part forms from the bottom. See Chapter 5 for more information on these options. Top Feed • Single sheets (basis weight 14 to 24 lbs) • Single envelopes – 24-lb maximum – 6.5” to 9.5” wide • Transparencies (8.5 x 11”) Rear feed (continuous forms only, thickness to 0.014” [0.36 mm]) • Single-part continuous forms – 12 to 24 lb. – Minimum 3” wide (*1) • Carbonless, multi-part forms – Original, plus 4 copies – 9 to 11 lb – Minimum 3” wide (*1) • Interleaf, multi-part forms (with carbon paper) – Original, plus 4 copies – 10 to 12 lb paper, with 9 lb carbon – Minimum 3” wide (*1) (*1) Please change mentioned below centering Position within a set-up group following indication of 32 pages when a form of 3” wide is used by Rear Feed. In the case of ML720 “Mode 1”. In the case of ML721 “Mode 2”. ML720/721 Printer Handbook 9 Bottom feed (continuous forms only, thickness to 0.017” [0.44mm]) • Single-part continuous forms – 12 to 24 lb – Minimum 3” wide (*2) • Carbonless, multi-part forms – Original, plus 5 copies – 9 to 11 lb – Minimum 3” wide (*2) • Interleaf, multi-part forms (with carbon paper) – Original, plus 4 copies – 10 to 12 lb paper, with 9 lb carbon – Minimum 3” wide (*2) • Continuous-feed envelopes – 24 lb maximum – 6.5” to 9.5” wide (envelope itself) • Labels – minimum 3” wide (*2) – maximum 10”(ML720) or 16” (ML721) wide • Card stock: papers up to 120 lb maximum (*2) Please change mentioned below centering Position within a set-up group following indication of 32 pages when a form of 3” wide is used by Bottom Feed. In the case of ML720 “Mode 1”. In the case of ML721 “Mode 2”. 10 Loading Paper Loading Single-Sheet Paper The single-sheet paper path is best for letterhead stationery, memos, and envelopes. We also recommend it for printing graphs and charts because it provides the most accurate control of the paper. To load in single sheets of paper: If you have any continuous-form paper in the paper path, you must press the PARK button on the front panel to remove it from the path before lading single sheets. 1. Make sure printer is turned ON and deselected (SEL light off – press SEL button to deselect it necessary). SEL light The ALARM light will remain on until paper is loaded. Move to"TOP" ML720/721 Printer Handbook 2. Move paper lever to position marked “TOP”. 11 Paper separator Wire feed guide 3. Grasp back of paper separator and unsnap it from housing, then swing it up into single-sheet feed position, making sure that wire feed guide is nestled in separator. 4. Adjust paper feed guides for width of paper and drop sheet of paper into separator. Paper will automatically feed into printer. Paper feed guides Flashes If the sheet of paper doesn’t feed in properly, the “15” light in the Character Pitch section at the bottom right of the control panel will begin flashing. To correct this, press the SHIFT and RESET buttons simultaneously, then reload the sheet. Press 12 Loading Paper 5. Baseline for Top of Form (TOF) on paper is indicated by red line on clear plastic paper shield. M Baseline 1 2 3 Hold Press to feed paper down in micro increments 6. If desired, change TOF setting using control panel: ☛ to set TOF further down on page, hold SHIFT button while pressing FF/ LOAD button: this will advance paper up in micro increments Press to feed paper up in micro increments ☛ to move TOF further up on page, hold SHIFT button while pressing LF button: this will advance paper down in micro increments 7. Press SEL button (SEL light will come on). ML720/721 Printer Handbook 13 Loading Rear-Feed Paper The rear-feed paper path is recommended for single-thickness, continuous fan-fold paper when printing spreadsheets, long reports, etc. For graphics or charts, it’s best to use the single-sheet paper path. To load continuous-form paper from the rear: 1. If you have paper in paper path, be sure to remove it before installing rear-feed paper. To remove single sheet, press FF/ LOAD button. To remove bottom-feed paper, press PARK button. 2. Move paper lever to position marked “REAR”. Position "Rear" Paper separator 14 3. Open the access cover. Loading Paper 4. Hold up the middle of the paper separator, and pull upwards. Paper separator Pull-up roller assembly 5. Rotate the paper separator forward and stand against the pull-up roller assembly. 6. Locate tractors. Tractors ML720/721 Printer Handbook 15 Lock lever Tractor cover 7. Pull up on lock levers to release tractors. Position right-hand tractor for width of paper you’re loading. The movement of the left tractor is limited to ensure that the paper will always contact the paper sensor when loaded. 8. Open the tractor cover, and raise the paper separator. Paper separator Tractor cover 9. Pull paper, and place first two holes on each side over tractor pins. Please note that an equal number of paper holes must be engaged on either tractor in order to ensure proper paper feed. Paper holes on pins 16 Loading Paper Paper separator 10.Replace the paper separator, and insert until the paper separator and upper cover marks align. Upper cover " "mark " "mark ML720/721 Printer Handbook 17 11.Close tractor covers and adjust left tractor to position edge of paper: reference marks on printer indicate left edge position for the two most common paper sizes. When paper is properly aligned, lock left tractor in place by pushing back on lock lever. Tractor covers Lock lever Reference marks Wire feed guide 12.Adjust right tractor so that paper holes are centered on pins(careful – if paper is stretched too tight or left too loose, it can jam and cause problems), then lock right tractor in place by pushing back on lock lever. 13.Set Paper separator and swing wire feed guide over to rest on pull-up roller assembly to prevent from curling back into printer. 14.Push FF/LOAD button. Paper will automatically feed into printer and ALARM light will go out. 18 Loading Paper 15.Baseline for top of Form(TOF) on paper is indicated by red line on clear plastic paper shield. M Baseline 1 2 3 Press to hold the paper before releasing the TEAR button. Press to bring the paper down to the print position. 16.If desired, change TOF setting using control panel: If form tear off is being selected in the printer menu, press the TEAR button to bring the paper down to the print position. Hold down the SHIFT button and release the TEAR button. ☛ to set TOF further down on page, hold SHIFT button while pressing FF/ LOAD button: this will advance paper up in micro increments Hold Press to feed paper down in micro increments ☛ to move TOF further up on page, hold SHIFT button while pressing LF button: this will advance paper down in micro increments Press to feed paper up in micro increments ML720/721 Printer Handbook 19 17.Press SEL button (SEL light will come on). To temporarily change the Top of Form setting for a particular print job, deselect the printer and press the LF button until you reach the TOF position you want to use. The printer will retain this setting until you turn it off. 20 Loading Paper Paper Handling Your printer has several handy paper handling features: • Tear • Form Tear-off • Paper Park Tear Feature When you’re using continuous forms with either the built-in rear-feed tractor or the optional bottom-feed push tractor, you can use this feature to advance the forms up to the tear position so you can easily tear off a printed sheet without wasting paper or readjusting the printer. To do this, simply press the TEAR button on the front panel. Press The tear feature can not be used when the optional pull tractor is installed. ML720/721 Printer Handbook 21 Forms Tear-off Feature Caution! Do not engage Forms Tear-off when printing on labels! The Forms Tear-off feature can be engaged to automatically move the paper up to the tear position after the selected interval (500 milliseconds, one second, or two seconds). The page will stay in the tear-off position until the printer receives data. It will then move down to the initial printing position. This feature is normally turned off. To activate it, enter the printer menu (see Menu Mode in Chapter3) and choose one of the intervals. Some programs, such as high resolution graphics packages, pause occasionally while sending data to the printer. If the pause lasts more than the selected interval, the paper will advance to the tear-off position until more data is received. No data will be lost, but this extra paper movement can cause uneven print registration in graphics. If you have this problem, use the menu to deactivate Forms Tear-off. Paper Park Feature If you have continuous-form paper loaded and you wish to switch to another paper path, first tear off the printed pages, then simply press the PARK button. The continuous-form paper will immediately retract from the paper path. Press 22 Loading Paper Switching Paper Paths To switch from continuous-form feed from the rear or bottom (optional push or pull tractor installed) of the printer to single-sheet feed from the top: 1. Tear off printed pages. 2. Press PARK button. 3. Swing wire guide up into paper separator, then pivot separator to upright position. 4. Move paper lever to position marked “TOP”. 5. Load single sheet paper into paper separator. To switch from top feed to continuous-form tear or bottom (optional push or pull tractor installed) feed: 1. Make sure no sheet is in paper path (press FF/LOAD to remove single sheet from path). 2. Lower paper separator to continuous forms position and swing wire guide over onto pull-up roller assembly. 3. Move paper lever to position marked “REAR” or “BOT”, as appropriate. 4. Press FF/LOAD button. Continuous-form paper will advance into print position. ML720/721 Printer Handbook 23 24 Loading Paper Chapter 3: Operation This chapter explains how to operate your printer. It also provides instructions on how to change the default settings and how to perform basic tasks, including selecting typeface/print quality, selecting character pitch, testing your printer, and resetting Top of Form to the factory default. Control Panel Your printer’s front panel lets you control paper feeding, customize your printer’s defaults to your particular needs, and select print quality and character pitch. Here’s a breakdown of the controls on the front panel: ML720/721 Printer Handbook 25 The seven buttons to the left on your control panel are multi-function buttons. In routine printer operation, they are used to manipulate the paper, but you can also use them to enter and make changes in the printer’s program menu. The PRINT QUALITY and CHARACTER PITCH sections at the right on the front panel are used to select the quality and size of the printing. See “Performing Basic Tasks” later in this chapter for information on how to use these buttons. Important! The print quality and character pitch set by means of the front panel can be overridden by commands sent by the commercial software package from which you’re printing a document. If you run into this problem, see Chapter 5 for information on how to correct it. 26 Operation Print Mode In its normal operating state, your printer’s front panel is in the Print Mode. Indicator Lights In the Print Mode, your printer has the following lights to indicate its status: 2 1 4 3 1. POWER light: Glows whenever printer is on. 2. SEL light: Glows when printer is selected, ready to receive data. Flashes when the printer is in print suppress mode or power saving mode. Goes out when printer is deselected (can’t receive data). 3. ALARM light: Glows when error condition exists, such as out of paper or paper jam. Also glows when paper lever is set to wrong position. Important! If the ALARM light is blinking, an unrecoverable error condition exists. Try turning the printer off, then on again; if the light is still flashing, contact your service dealer (see Chapter 5 for more information on obtaining service). 4. QUIET light: Glows when printer is in QUIET state (printer selected or deselected). ML720/721 Printer Handbook 27 Buttons When the printer is selected (SEL light on), only the functions marked at the top of the bank of buttons (LF, FF/LOAD, TEAR, PARK, QUIET) are in effect. When the printer is deselected (SEL light off), the functions marked at the bottom of the buttons (Micro Feed Down, Micro Feed Up, TOF) can be accessed by means of the SHIFT button. Each button can have several functions, depending on the mode in use (Print Mode or Menu Mode), on whether or not the printer is selected and on whether or not the optional Cut Sheet Feeder (CSF) is installed. Most buttons also have a different function if they are pressed while the printer is being turned on. In addition, different combinations of two buttons can be used to access functions. The various function available for each button are summarized in the table below. The PRINT QUALITY and CHARACTER PITCH buttons are discussed under “Performing Basic Tasks,” later in this chapter. 28 Operation Summary of Front Panel Button Functions Button SEL Print Mode Help on Power Up With CSF Installed Menu Mode Selects/deselects printer. Activates Menu Same as Print Resets Paper Out of Paper Mode. Mode Jam Alarm. Also ends Font Test or Rolling ASCII test . Resets Paper Out Alarm. SEL + SHIFT Activates Menu Mode. Exits Menu Mode. SHIFT With printer deselected: N/A used with other keys to set and store Top of Form. Same as Print Mode N/A LF Advances paper Up one Activates Font line. Press and hold to ad- Test. vance by repetitive line feeds. Same as Print Mode Advances to next Group in Menu. LF+ SHIFT With printer deselected, Activates Font moves Top of Form setting Test. up (paper moves down) on page in micro increments. Same as Print Mode Goes back to previous Group in Menu. FF/LOAD Feeds in sheet of paper or N/A advances continuous-form paper to print position. Inserts or Ejects Page. Advances to next Item in Menu. FF/LOAD With printer deselected, N/A +SHIFT moves Top of Form setting down (paper moves up) on page in micro increments. Same as Print Mode Goes back to previous Item in Menu. N/A Advances to next Value in Menu. TEAR Activates Menu Same as Print Mode Mode. Moves continuous-feed N/A paper up for tear-off or back down for printing (select/deselect states). N/A : Not applicable. ML720/721 Printer Handbook 29 Button Print Mode Help on Power Up With CSF Installed Menu Mode TEAR+ SHIFT Move the print head to Re- N/A verse. Move the print head to Reverse. Goes back to previous Value in Menu. PARK Parks continuous-form pa- N/A per. Ejects paper. Prints list of all Menu settings for current emulation. PARK+ SHIFT Move the print head to N/A Forward. Move the print head to Forward. Prints current Group Menu Setting. QUIET Activates/deactivates QUIET mode. Activates Rolling ASCII Test. Activates/deactiN/A vates QUIET mode. Sets Top of Form. Activates Rolling ASCII Test. Sets Top of Form. N/A PRINT Selects next Print Quality N/A QUALITY mode. Selects next Print Quality mode. N/A PRINT Sets/Resets QUALITY Print mode. +SHIFT Sets/Resets Incre- Prints all Menu mental Print settings, regardmode. less of emulation/options engaged. QUIET+ SHIFT Incremental N/A CHARAC- Selects next pitch setting. TER PITCH N/A Selects next pitch setting. N/A CHARAC- With printer deselected, N/A TER resets printer. PITCH+ SHIFT With printer dese- N/A lected, resets printer. FF/LOAD N/A +TEAR N/A Resets Menu and Top of Form to factory default. N/A N/A : Not applicable. 30 Operation Button Print Mode Help on Power Up With CSF Installed Menu Mode SEL+LF N/A Resets Menu to factory default. N/A N/A QUIET+ PARK N/A Resets Top of Form to factory default. N/A N/A Activates hex dump mode. N/A N/A SEL+ N/A FF/LOAD N/A : Not applicable. ML720/721 Printer Handbook 31 Menu Mode When your printer is in the Menu Mode, you can use the front panel controls to change the defaults for the printer parameters, including emulation, page length, line spacing, typeface, pitch, etc. For example, you might want to change the page length to 14 inches if you’re printing on legal-size documents, or to 3 inches if you’re printing on labels or small cards. To place your printer in the Menu Mode, hold the SHIFT button while pressing the SEL button (printer either selected or deselected). The MENU light will come on and, if the printer was selected, the SEL light will go out. To exit the Menu Mode, hold the SHIFT button and press the SEL button. The MENU light will go out and the SEL light will come on. 32 Operation Sample Menu The menu is made up of groups of parameters. Within each group is a list of items and each of those items has several possible settings. Here’s a sample Menu printout. The first column lists the groups; the second, items; the third, settings: ML720/721 Printer Handbook 33 Summary of Menu Settings The table below details the entries in the printer Menu as it comes from the factory. The defaults are in bold face italic type. Other entries will appear in the Menu depending on what options you have installed and what emulation is engaged. For a complete listing of all the available Menu selections, along with explanations for each setting, see appendix B. Group Item Setting Printer Control Emulation Mode IBM PPR, Epson FX, ML Font Print Mode Utittity, NLQ Courier, NLQ Gothic, DRAFT HSD, SSD 10 cpi, 12 cpi, 15 cpi, 17.1 cpi, 20 cpi No, Yes Normal, Italics Single, Double DRAFT Mode Pitch Proportional Spacing Style Size Symbol Sets Character Set Language Set Zero Character Code Page Rear Feed Line Spacing Form Tear-Off Skip Over Perforation Page Width* Page Length Set I, Set II (EPSON, IBM mode) Standard, Line Graphics, Block Graphics (ML mode) American, French, German, Britishi, Danish I, Swedish, Italian, Spanish I, Japanese, Norwegian, Danish II, Spanish II, Latin American, French Canadian, Dutch, Publisher Slashed, Unslashed USA, Canada French, Multilingual, Portugal, Norway, BRASCII, Abicomp, Multilingual 858 ISO 8859-15 6 LPI, 8 LPI Off, 500 ms, 1 sec, 2 sec No, Yes 13.6", 8" 11", 11 2/3", 12", 14", 17", 5", 3", 3.5", 4", 5.5", 6", 7", 8", 8.5" * ML721 only 34 Operation Group Item Setting Bottom Feed Line Spacing Form Tear-Off Skip Over Perforation Page Width * Page Length 6 LPI, 8 LPI Off, 500 ms, 1 sec, 2 sec No, Yes 13.6", 8" 11", 11 2/3", 12", 14", 17", 5", 3", 3.5", 4", 5.5", 6", 7", 8", 8.5" Top Feed Line Spacing Bottom Margin Page Width * Page Length 6 LPI, 8 LPI Valid, Invalid 13.6", 8" 11", 11 2/3", 12", 14", 17", 5", 3", 3.5", 4", 5.5", 6", 7", 8", 8.5" 1 sec, 2 sec, 500ms by Actual Page Length, by Menu Setting Wait Time Page Length Control Set-Up Graphics 7 or 8 Bit Graphics *1 Receive Buffer Size Paper Out Override Print Registration 7 or 8 Bits Data Word *1 Operator Panel Function Reset Inhibit Print Suppress Effective Auto LF Auto CR *2 Print DEL Code *1 SI Select Pitch (10 CPI) *2 SI Select Pitch (12 CPI) *2 Time Out Print Auto Select Centering Position CSF Type * ESC SI Pitch *2 Power Saving Power Save Time Uni-directional, Bi-directional 8, 7 64K, 128K, 1 Line, 32K No, Yes 0, 0.05 mm Left, 0.10 mm Left, 0.15 mm Left, 0.20 mm Left, 0.25 mm Left, 0.25 mm Right, 0.25 mm Right, 0.15 mm Right, 0.10 mm Right, 0.05 mm Right 8, 7 Full Operation, Limited Operation No, Yes Yes, No No, Yes No, Yes No, Yes 17.1 CPI, 15 CPI 20 CPI, 12 CPI Valid, Invalid No, Yes DEFAULT, MODE 1, MODE 2 Wide, Narrow 17.1 CPI, 20 CPI Enable, Disable 5min, 10min, 15min, 30min, 60min * ML721 only *1 ML mode Only *2 IBM mode Only ML720/721 Printer Handbook 35 Group Item Parallel I/F I-Prime Pin 18 Auto Feed XT *3 Bi-Direction Setting Buffer Print, Buffer Clear, Invalid +5V, Open Invalid, Valid Enable, Disable *3 EPSON mode Only 36 Operation Menu Mode Indicator Lights In the Menu Mode, the following lights indicate your printer’s status: 1 2 1. POWER light: Glows when printer is on. 2. MENU light: Glows when printer is in Menu Mode. Menu Mode Buttons 1 ML720/721 Printer Handbook 2 3 4 37 Here is a summary of the buttons active in the Menu Mode: 1. GROUP button: Press to scan through groups of listings. Each time you press the GROUP button, a line will print, showing the next group in the Menu. To go back one group, hold the SHIFT button while pressing the GROUP button. 2. ITEM button: Press to scan through items for a particular group. Each time you press the ITEM button a line will print, showing the next item within the group. To go back one item, hold the SHIFT button while pressing the ITEM button. 3. SET button: Press to change setting for the items. Each time you press the SET button, a line will print across the page showing the next setting for that item. Keep pressing the button until the setting you wish to engage appears. To go back one setting, hold the SHIFT button while pressing the SET button. 4. PRINT button: Press to print out listing of current settings for each items, group by group. Resetting Menu to Factory Defaults To reset your printer Menu to the factory settings, turn the printer off, then hold the SEL and LF buttons while turning it back on again. Hold while turning printer on 38 Operation Performing Basic Tasks Selecting Print Quality Print quality button Your printer allows you to select from four print qualities: utility, near letter quality (NLQ), high speed draft (HSD) and super speed draft (SSD). Utility printing, in Gothic, is the default, designed for preparing rough drafts or internal correspondence. NLQ printing, in Courier or Gothic (depending on MENU setting), gives you sharp, crisp characters for correspondence and important final documents that require a polished appearance. HSD and SSD printing, in Gothic, gives the fastest printing, but with the poorest quality. To select the print quality you want, press the PRINT QUALITY button successively until the light underneath the print quality you wish to engage is lit. Your printer also prints any of eight different bar codes accessible through printer commands. For more information on bar codes, see the end of this chapter. ML720/721 Printer Handbook 39 Selecting Character Pitch Character Pitch button The character pitch determines the width of the individual characters and is measured in characters per inch (cpi). To select the character pitch, press the CHARACTER PITCH button successively until the light underneath the pitch you wish to engage is lit. In the Epson and IBM emulations, the choices are 10 cpi, 12cpi, 15cpi, 17cpi, 20cpi, or Proportional. In the MICROLINE emulation, the choices are 10cpi, 12cpi, 15cpi, 17cpi, or 20 cpi, either non-proportional or proportional: proportional is selected when both the light under the desired cpi and the light under “Prop” are lit. To reset the pitch to the user default (Menu Setting): 1. Be sure printer is deselected (SEL light out). If not, press SEL button. 2. Hold SHIFT button while pressing CHARACTER PITCH button. If the SI command is received from your software, the character pitch selected on the control panel will be overridden by the SI command. 40 Operation The table below summarizes the fonts available from your printer: Typeface Spacing NLQ Courier 10 cpi, 12 cpi, 15 cpi, 17 cpi, 20 cpi, Proportional NLQ Letter Gothic 10 cpi, 12 cpi, 15 cpi, 17 cpi, 20 cpi, Proportional Utility (Gothic) 10 cpi, 12 cpi, 15 cpi, 17 cpi, 20 cpi, Proportional High Speed Draft (Gothic) 10 cpi, 12 cpi, 15 cpi, 17 cpi, 20 cpi Bar Code Code 39, UPC A, UPC E, EAN 8, EAN 13, Inter leaved 2 of 5, Code 128, Postnet Super Speed Draft (Gothic) 12 cpi Testing Your printer Your printer has three your can run: the Font Test, the Rolling ASCII Test, and the Hexadecimal Dump Test. ML720/721 Printer Handbook 41 Font Test The Font Test provides a printout containing samples of available typefaces. Here’s a portion of a Font Test printout: 42 Operation To run the Font Test: 1. Be sure paper is loaded. 2. Turn off printer. 3. Hold LF button for several seconds while turning printer on. (IF printer simply turns on without starting to print, you didn’t hold down LF button long enough.) Rolling ASCII Test The Rolling ASCII Test produces a continuous printout of all ASCII characters. The printing will continue until you stop it manually by pressing the SEL button. Here’s a sample portion of a Rolling ASCII Test: ML720/721 Printer Handbook 43 To activate the Rolling ASCII Test: 1. Be sure paper is loaded. Caution! For wide carriage Model 721, be sure you have wide paper loaded! 2. Turn off printer. 3. Hold QUIET button for several seconds while turning printer on. (If printer simply turns on without starting to print, you didn’t hold down QUIET button long enough.) Hexadecimal Dump Test If you want to test the data your computer is sending to the printer, you can place the printer in the Hexadecimal Dump Mode. When the printer is in the Hex Dump Mode, all data received, including text and printer commands, will be printed in both hexadecimal and ASCII format. In the ASCII format, all non-printable characters will be represented by a period. For example, this line of BASIC code: LPRINT CHR$ (27);“0”;CHR$ (30);“This is an example of a hexadecimal dump.” would print like this: 44 Operation To engage the Hexadecimal Dump Mode: 1. Be sure paper is loaded. 2. Turn off printer. 3. Hold SEL and FF/LOAD buttons for several seconds while turning on printer. The printer will print the line “Hex Data Dump” and be ready to receive data in the Hexadecimal Dump Mode. To run the test, simply send data to the printer while it is in the Hexadecimal Dump Mode. When you’re done, you can exit the Hexadecimal Dump Mode by either pressing the SEL button or by turning the printer off, then on again. Resetting Top of Form To reset the Top of Form to the factory default: 1. Turn off printer. 2. Hold down QUIET and PARK buttons while turning printer back on. Using Bar codes Your MICROLINE 320/321 Turbo printer incorporates eight different bar codes: • UPC A • UPC E • EAN 8 • EAN 13 • Code 39 • Code 128 • Interleaved 2 of 5 • Postnet ML720/721 Printer Handbook 45 You will find a list of the bar code printer commands for each emulation in appendix C. Here is a brief explanation of each of the available bar codes, along with a sample printout for each one. UPC A Bar Code UPC (Universal Product Code) bar coding is used in the supermarket industry. UPC A coding contains ten digits: the first five digits represent the manufacturer, the second five digits identify the product. UPC E UPC E bar coding is a six-digit variation of UPC A, used for labeling small items. 46 Operation EAN 8 EAN (European Article Numbering) bar coding is a variation of UPC coding. EAN 8 encodes eight digits. EAN 13 EAN 13 encodes 13 digits and contains the same number of bars as UPC A. The thirteenth digit combined with the twelfth digit provides a code representing a country. Code 39 Also known as 3 of 9 Code, code 39 is used in non-retail applications. Each character has five bars and four spaces. Code patterns have been developed for 44 different alphabetic, numeric and graphic characters. ML720/721 Printer Handbook 47 Code 128 Code 128 has 106 different characters, each of which can have any one of three different meanings depending on which code set (A, B, or C) is engaged. A special code at the beginning indicates which set is engaged: three shift codes are also available for use within the bar code to indicate a change in the code set engaged, as required. Interleaved2 of 5 Inerleaved2 of 5 bar coding is used mainly in the distribution industry. Two digits are encoded: one in the bars and one in the spaces. Postnet Postnet bar coding is used by the U.S. Post Office for sorting mail by automated equipment. It incorporates a coding system using five bars and four spaces for each digit. 48 Operation Chapter 4: Working with Software This chapter covers the fundamentals of setting up commercial software packages for use with your printer. Be sure to read your software documentation carefully for more details. Basic Terminology Before we start, let’s examine a few terms with which you may not be familiar. Printer Commands If you’re using commercial software with an appropriate printer driver (see “Printer Drivers” below), the printer commands will normally be sent to the printer by your software and you won’t even need to think about them. Printer commands are signals sent by your PC to the printer which guide and control its operation. Printer commands tell the printer what character pitch to use, what font to use, what margins to use, whether to use single or double spacing, when to engage/disengage double width or double height printing, etc. Printer commands can be sent in decimal, ASCII, or hexadecimal form. The values (decimal/ASCII/hexadecimal) for each type of command depend on which emulation is active (see Appendix C for a listing of printer commands for each emulation). With only a few exceptions, printer commands begin with the ESC character, decimal 27 (hexadecimal 1B), which serves as signal to the printer that what follows is to be interpreted as a command rather than just a string of characters. Some printer commands expect you supply a numerical value, representing tab stops, line spacing, etc. ML720/721 Printer Handbook 49 Emulations In order to eliminate hundreds of different sets of printer commands, most printers emulate, or imitate, one of several general printers; i.e., they accept all of that printer’s commands and behave as though they were the emulated printer. Your printer has three emulations: • IBM Proprinter III (factory default) • Epson FX • Oki Microline Printer Drivers Compatible Printer Drivers (DOS) Many of the software packages you use will contain drivers 100% compatible with your printer. For older software, however, it may be necessary to select a driver that functions nearly the same as a driver specifically designed for your printer. This generally means that you will be selecting a driver that provides commands to access most, but not all of the available functions; however, the commands that are available will perform properly with your printer. The table below summarizes the various drivers that will work with your printer. They are listed in order by decreasing compatibility as you go down the list: select one from as high up on the list as possible, based on what is available from among the drivers supplied with your software. If you don’t see one from near the top of the list, give the software manufacturer a call to see if they have added any drivers to those supplied when you purchased your software. Software manufacturers are constantly updating their lists of drivers to keep up with the printer market and they may very well have one which will give maximum compatibility with your printer. 50 Working with Software IBM Proprinter Emulation Oki ML 520/1 IBM IBM Proprinter III IBM Proprinter II IBM Proprinter Epson FX Emulation Oki ML 520/1 Epson Epson FX 850/1050 Epson FX 86/286 Epson FX Epson EX800/1000 OKI ML Emulation Oki Microline 520/521 Oki Microline 320/321 Oki Microline 292/293 Oki Microline 192/193 Oki Microline 182/183 Because there are some differences in characteristics such as speed or access to various features, you may wish to experiment with several different drivers. If you must select a driver that is not listed in the table, be sure to check it thoroughly for print features such as boldface, underline and changes in pitch. Don’t be surprised if boldfaced items are printed twice, underlines are misplaced, wide spaces are left between lines or the printer behaves chaotically (turn off the printer if the latter occurs). These are all characteristics of an incompatible driver selection. Windows Printer Drivers To use this printer on a Windows operating system, install the Windows printer driver, that is on the Printer Software CD-ROM provided with your printer, on your computer. For information about which Windows systems are compatible with the printer drivers on the Printer Software CD-ROM and the installation procedure open the Readme file on the Printer Software CD-ROM. ML720/721 Printer Handbook 51 52 Working with Software Solving, Chapter 5: Problem Maintenance, & Service This chapter provides solutions to some common printer problems and explains the routine maintenance procedures that will help keep your printer in tip-top operating condition. It also tells you how to order parts, consumables and accessories, and provides information on obtaining service for your printer. You will find your printer’s warranty at the back of this Printer Handbook. Problem Solving What if … …nothing happens when I turn on the printer? The printer may not be plugged in. Check the power cord connection to the outlet and to your printer. If you’re using a power strip, make sure it’s turned on. Check to be sure that the fuse hasn’t blown or that the circuit breaker hasn’t tripped. …the printer doesn’t print when the computer sends data? The printer may be deselected. If the SEL light is out, press the SEL button to select the printer. The printer cable may not be securely connected. Check the cable to be sure that it is properly connected to both the PC and the printer. If you have installed the serial I/F board, check to be sure that the board is firmly seated in the printer. ML720/721 Printer Handbook 53 …I’m getting strange symbols, incorrect fonts, etc., when I try to print a document? The printer driver you have engaged does not agree with the emulation selected for your printer. To check the emulation selected, first make sure paper is loaded, then press the SEL and SHIFT buttons simultaneously to enter the MENU on your printer. Next, press the GROUP button: this will print the emulation selected. If the emulation is not the one you want to use, press the SET button to change it to the one you want before exiting the MENU (to exit, press SEL and SHIFT buttons). If the emulation is correct, check your software documentation on how to select a printer driver, then check to be sure that you have selected one of the drivers listed for that emulation on page 51). The closer the driver is to the top of the list, the more compatible it will be with your printer. If your software doesn’t have any of the indicated drivers available, check with the software manufacturer to see if they have added any additional drivers since you purchased your software. If you have embedded any printer commands in your software, check to be sure that you entered them correctly. …I’ve installed a brand new ribbon and the printing is smeared and streaked? The plastic shield on the ribbon is either loose or missing. The shield must be left on the ribbon when you are installing the cartridge. To remedy this situation, move the printhead to the center of the platen (careful – printhead may be HOT!) and lift off the ribbon cartridge. Check the ribbon shield. If it’s loose, secure it in place properly. If it’s missing, locate it and reinstall it. Problem: Ink smears on the paper when I print narrow columns. Solution: This may be caused by excessive printhead travel from the centering position. Enter the Menu and set the Centering Position to MODE 1 (see Menu Mode in Section 3). For wide-carriage Model ML391T, if MODE1 doesn’t work, try setting the Centering Position to MODE2. …there are dots missing in my printouts? The head gap may not be set correctly. Try moving the head gap lever to a lower setting. If that doesn’t help, the printhead may be damaged; call for service. 54 Ploblem Solving, Maintenance, & Service … the Alarm light is on and the Character Pitch 15 light is flashing? This indicates a paper loading error. To stop the flashing light, press the SEL button. Before trying to load paper in again, check to be sure that you have the paper lever in the correct position (BOT, TOP, REAR) for the path you’re using. Caution! Always turn the printer off before you turn the platen knob! If the paper lever is in the correct position and you’re using rear feed, lift up the paper separator and check to be sure that paper is properly on the tractors and has not jammed up somehow. If the paper lever is in the correct position and you’re using the optional bottom-feed push tractor, check the bottom tractor unit to be sure that paper is properly on the tractors and has not jammed up before entering the printer. Once the paper is correctly loaded, press and release the SEL button, then hold the SHIFT button and press the RESET (Character Pitch) button. …I need to load paper, but the Alarm light is not on? If the Alarm light is off, the printer thinks it has paper loaded. To correct this problem, press and release the SEL button, then hold the SHIFT button and press the RESET (Character Pitch) button. The Alarm light will come on and you’ll be able to load paper. …my word processor files don’t print the way I have the MENU and front panel set? Before sending a file to the printer, many word processors send either an “initialization string” or an I-Prime signal to the printer. The initialization storing contains codes that reset the printer to a default set of features: otherwise the printer might accidentally print using features set for a previous job. These codes will override panel or MENU settings. To set your printer to ignore the reset code, enter the printer MENU (hold SHIFT button while pressing SEL/MENU button) and change the Reset Inhibit item (in the Set-Up group) to Yes. Please note that while this will stop the reset code from resetting your printer, other codes in the initialization string may still override the printer MENU and/ or front panel settings. ML720/721 Printer Handbook 55 The I-Prime signal is sent over the parallel interface (pin 31) and will automatically override any settings you have made using the front panel buttons. To eliminate this problem, enter the program MENU (hold SHIFT button while pressing SEL/MENU button) and change the I-Prime item (in the Parallel I/F group) to Invalid. …the Print Quality and Character Pitch buttons on the front panel won’t work? The Operator Panel Function item on the printer MENU can be used to disable these buttons. If the printer is part of a customized system or if it is used by a number of people, the system manager may have used this option to make sure the printer is always set properly. …static electricity causes the paper to stick? In cold, dry weather, static charges can build up on continuous-form paper. This can make the paper cling to the paper separator. If you have this problem during highvolume printing jobs, try moving the single sheet paper guides on the separator together so that the paper rests on the guides rather than on the separator itself. Maintenance This section explains how to change ribbons, clear paper jams and clean your printer. Replacing the Ribbon Cartridge When replacing the ribbon, be sure to use only ribbons specifically for use with MICROLINE 720/721 printers. For best results,use genuine OKI ribbons. 1. Turn printer off. 2. Disengage and swing open access cover. Caution! Be careful not to touch the printhead: it may be hot! 56 Ploblem Solving, Maintenance, & Service 3. Slide ribbon cartridge along until it is centered on platen, being careful not to touch printhead. Center printhead Swing front end up to remove 4. Swing front-end of cartridge up off printhead, then lift cartridge out and discard it. 5. Remove new ribbon cartridge from its packaging — do NOT remove clear plastic ribbon shield! Plastic shield facing platen ML720/721 Printer Handbook 6. Hold ribbon cartridge with knob facing up and exposed portion of ribbon facing platen. Place flat end on ribbon plate, fitting grooves over pins on plate. 57 7. Lower front end of cartridge over printhead until it snaps into place. Turn knob in direction of arrow (clock-wise) to take up any slack in ribbon. M 1 2 Knob 3 58 Ploblem Solving, Maintenance, & Service Clearing Paper Jams Caution! Always turn the printer off before you turn the platen knob! Rear Feed Jams To clear a rear-feed paper jam: 1. Turn off printer 2. Turn platen knob to back paper out of printer. Remove any ripped pieces of paper. 3. Reload paper, turn printer back on and press FF/LOAD button. If your paper keeps jamming, the chances are excellent that you have bits of paper stuck in the paper path. To eliminate this problem: 1. Turn off printer. 2. Use platen knob to back paper out of printer. Remove Paper separator ML720/721 Printer Handbook 3. Remove the paper separator. 59 Tractor covers Remove pull-up roller assembly 4. Open tractor covers and remove paper from printer. 5. Open access cover and lift off pull-up roller assembly. Note: Never attach or remove the pull-up roller assembly when the paper separator is in the standing state. 6. Fold some single-sheet, continuousfeed paper over three times to produce page four sheets thick. Quadruple-thick paper 7. Load this quadruple-thick sheet onto tractor pins and close tractor covers. 8. Turn platen knob to draw quadruplethick paper around platen. This will bring jammed pieces of paper up and out so you can dispose of them. 9. Back quadruple-thick sheet out of printer using platen knob. 60 Ploblem Solving, Maintenance, & Service Replace pull-up roller assembly 10.Replace pull-up roller assembly. Note: When installing a pull-up roller assembly, Shift the paper lever in agreement with the “Rear” mark before the installation. 11.Reload regular paper (open tractor covers, place paper on pins, close tractor covers). Replace paper separator 12.Swing access cover and paper separator back into place. 13.Turn printer on and press FF/LOAD button. ML720/721 Printer Handbook 61 Single Sheet Feed Jams To remove jammed single sheets of paper (top feed): 1. Turn printer OFF. 2. Rotate platen knob to back paper out of carriage. Lift off pull-up roller assembly 3. If necessary, open access cover and lift off pull-up roller assembly to provide access to remove any ripped pieces from around carriage. Button Feed Jams If bottom-feed paper jams: 1. Turn off printer and use platen knob to back paper out carefully. Lift off pull-up roller assembly 62 2. Be sure to remove any shreds of paper from printer before reloading paper. (Open access cover and lift off pull-up roller assembly to provide access to carriage area.) Ploblem Solving, Maintenance, & Service Cleaning the Housing You should clean the printer every six months (or after about 300 hours of operation). To do this: 1. Turn printer OFF and remove paper from path. Remove pull-up roller assembly 2. Open access cover and remove pull-up roller assembly. 3. Use clean, dry cloth to dust area around carriage shaft and platen. Be sure to remove any loose particles of paper. Note: The built-up of dust or paper powder in the printer, which may be occurred by some environmental settings or media used, may cause a mulfunction, so execute cleaning according to how the printer is dirty. 4. Reinstall pull-up roller assembly and close access cover. Note: When installing a pull-up roller assembly, Shift the paper lever in agreement with the “Rear” mark before the installation. Never use solvents or strong detergents on the cabinet–they could damage the housing. ML720/721 Printer Handbook 63 Accessories You can add even more flexibility to your printer by means of the following optional accessories. Cut Sheet Feeder, Single-Bin and Dual-Bin Mounts on the platen to provide continuous single-sheet paper feed. The bin will hold up to 100 sheets of standard, 20-lb paper. With cable for connection to printer. Push Tractor, Bottom-Feed Converts printer for feeding continuousform paper from the bottom. Use of bottom feed eliminates the curling which takes place as rear-feed paper moves around the platen. Bottom feed is ideal for card stock, thick multi-part forms, labels which could peel off and jam the unit if fed in from the rear, etc. Includes tractor, support legs for printer, and metal tear bar. 64 Ploblem Solving, Maintenance, & Service Pull Tractor, Top-Mount Used for bottom-feed of labels or heavy card stock, or in conjunction with the rearfeed tractor to provide more precise paper control when you’re using multi-part forms. Includes cover for installation in place of access cover. Roll Paper Stand Adapts ML 720 printer for use with rolltype paper (not supplied). Not usable on ML 721. Includes stand and support. With cable for connection to printer. Serial Interface Includes serial interface board and locking piece for installation in printer next to standard parallel interface. Without interface cable. Note: The use of the locking piece to 720/721 should be impermissible due to the exclusiveness for other models. ML720/721 Printer Handbook 65 Replacement Parts Replacement Part Access Cover, ML 720 Access Cover, ML 721 AC Cord Poll-up Roller Assembly, ML 720 Poll-up Roller Assembly, ML 721 Platen Knob Printhead Ribbon, Black 66 Ploblem Solving, Maintenance, & Service Appendix A: Specifications Print Method Impact dot matrix Printhead 9 pins, 0.30 mm diameter with thermal protection Print Speed Mode High Speed Draft (HSD) Utility Near Letter Quality (NLQ) Super Speed Draft (SSD) Characters per Second (CPS) 507 cps at 10 cpi 380 cps at 10 cpi 95 cps at 10 cpi 570 cps at 12 cpi Characters per Line (CPL) Setting 10 cpi 12 cpi 15 cpi 17.1 cpi 20 cpi ML720 80 cpl 96 cpl 120 cpl 137 cpl 160 cpl ML721 136 cpl 163 cpl 204 cpl 233 cpl 272 cpl Emulations Epson FX, IBM Proprinter, OKI Microline co-resident Interface Standard: Centronics parallel, USB Optional: RS-232C serial Graphics Resolution: Epson/IBM Emulations MICROLINE Emulations ML720/721 Printer Handbook Single Density: 60 x 216 dpi Double Density: 120 x 216 dpi Quadruple Density: 240 x 216 dpi Single Density: 60 x 72 dpi / 72 x 72 dpi Double Density: 120 x 144 dpi / 144 x 144 dpi Quadruple Density: 240 x 144 dpi / 288 x 144 dpi 67 Resident Font Near Letter Quality Utility High Speed Draft Super Speed Draft Bar Code: Courier, Gothic Gothic Gothic Gothic Code 39, UPC A, UPC E, EAN 8, EAN 13, Interleaved 2 of 5, Code 128, Postnet Receive Buffer Size MAX 128K Reliability Mean Time Between Failures (MTBR) 20,000 hours at 25% duty cycle and 35% Page density Mean Time to Repair (MTTR) 15 minutes Printhead life Ribbon Life (on average, 10 cpi utility) 68 200 million characters average in 10 cpi utility mode at 25% duty and 35% page density 4 million characters Appendix A: Specifications Paper Specifications Width Minimum Maximum 3” ML 720: 10” ML 721: 16” 12 to 24 lb. Weight Thickness Rear feed Bottom feed 0.014”(0.36 mm) 0.017”(0.44 mm) Paper type Feed Width range Weight Cut sheets Top only 14 to 24 lb. ML720: 7.2" to 8.5" ML721: 7.2" to 14.3" Single-part continuous forms Rear, Bottom 12 to 24 lb. ML720: 3" to 10" ML721: 3" to 16" Carbonless, multipart continuous form (orig. + 4 copies) Rear, Bottom 9 to 11 lb. ML720: 3" to 10" ML721: 3" to 16" Interleaf, multipart continuous form (orig. + 4 copies) Rear, Bottom 10 to 12 lb paper, ML720: 3" to 10" ML721: 3" to 16" 9 lb carbon Labels Bottom only N.A. ML720: 3" to 10" ML721: 3" to 16" Envelopes, single feed Top 24 lb. max. 6.5" to 9.5" Envelopes, continuous feed, non-overlap type Bottom only 24 lb. max. 6.5" to 9.5" Card stock Bottom only 120 lb. max N.A. Transparencies Top only ML720/721 Printer Handbook 8.5" x 11" 69 Dimensions (W x D x H) ML 720: ML 721: 15.7 x 13.6 x 6 inch (398 x 345 x 153 mm) 21.7 x 13.6 x 6 inch (552 x 345 x 153 mm) Weight ML 720: ML 721: 16.4 lb (7.5Kg) 20.8 lb (9.5Kg) Environmental Requirements Operating Temperature: Storage Temperature: Operating Humidity: Storage Humidity: 41 to 95˚F (5 to 35˚C) 14 to 122˚F (-10 to +50˚C) 20 to 80% RH 5 to 95% RH Electrical requirements 230 volts ac (+15%, -14%) 50/60 Hz (±2%) Specifications subject to change without notice. 70 Appendix A: Specifications Appendix B: Menu Selections The menu selections for your printer are summarized below. Factory defaults are indicated in bold face italic. Explanations for each item follow the table. The table below summarizes all possible menu settings available with your printer. Which of these you will actually see when you are working in the Menu depends on the active emulation and on the options installed. Group Item Setting Printer Control Emulation Mode IBM PPR, Epson FX, ML Font Print Mode Utilitity, NLQ Courier, NLQ Gothic, DRAFT HSD, SSD 10 cpi, 12 cpi, 15 cpi, 17.1 cpi, 20 cpi No, Yes Normal, Italics Single, Double DRAFT Mode Pitch Proportional Spacing Style Size Symbol Sets Character Set Language Set Zero Character Code Page Rear Feed Line Spacing Form Tear-Off Skip Over Perforation Page Width* Page Length ML720/721 Printer Handbook Set I, Set II (EPSON, IBM mode) Standard, Line Graphics, Block Graphics (ML mode) American, French, German, Britishi, Danish I, Swedish, Italian, Spanish I, Japanese, Norwegian, Danish II, Spanish II, Latin American, French Canadian, Dutch, Publisher Slashed, Unslashed USA, Canada French, Multilingual, Portugal, Norway, BRASCII, Abicomp, Multilingual 858 ISO 8859-15 6 LPI, 8 LPI Off, 500 ms, 1 sec, 2 sec No, Yes 13.6", 8", 11", 11 2/3", 12", 14", 17", 5", 3", 3.5", 4", 5.5", 6", 7", 8", 8.5" 71 Group Item Bottom Feed Line Spacing Form Tear-Off Skip Over Perforation Page Width * Page Length 6 LPI, 8 LPI Off, 500 ms, 1 sec, 2 sec No, Yes 13.6", 8" 11", 11 2/3", 12", 14", 17", 5", 3", 3.5", 4", 5.5", 6", 7", 8", 8.5" Top Feed Line Spacing Form Tear-Off *6 Bottom Margin Page Width * Page Length 6 LPI, 8 LPI Off, 500ms, 1 sec, 2 sec Valid, Invalid 13.6", 8" 11", 11 2/3", 12", 14", 17", 5", 3", 3.5", 4", 5.5", 6", 7", 8", 8.5" 1 sec, 2 sec, 500ms by Actual Page Length, by Menu Setting Wait Time Page Length Control Set-Up Graphics 7 or 8 Bit Graphics *2 Receive Buffer Size Paper Out Override Print Registration 7 or 8 Bits Data Word *2 Operator Panel Function Reset Inhibit Print Suppress Effective Auto LF Auto CR CSF Bin Select Print DEL Code *2 SI Select Pitch (10 CPI) *1 SI Select Pitch (12 CPI) *1 Time Out Print Auto Select Centering Position CSF Type * ESC SI Pitch *2 Power Saving Power Save Time 72 Setting Uni-directional, Bi-directional 8, 7 64K, 128K, 1 Line, 32K No, Yes 0, 0.05 mm Left, 0.10 mm Left, 0.15 mm Left, 0.20 mm Left, 0.25 mm Left, 0.25 mm Right, 0.25 mm Right, 0.15 mm Right, 0.10 mm Right, 0.05 mm Right 8, 7 Full Operation, Limited Operation No, Yes Yes, No No, Yes No, Yes Bin 1, Bin 2 No, Yes 17.1 CPI, 15 CPI 20 CPI, 12 CPI Valid, Invalid No, Yes DEFAULT, MODE 1, MODE 2 Wide, Narrow 17.1 CPI, 20 CPI Enable, Disable 5min, 10min, 15min, 30min, 60min Appendix B: Menu Selections Group Item Setting Parallel I/F I-Prime Pin 18 Auto Feed XT *3 Bi-Direction Buffer Print, Buffer Clear, Invalid +5V, Open Invalid, Valid Enable, Disable Serial I/F *5 Parity Serial Data 7/8 Bits Protocol Diagnostic Test Busy Line Baud Rate None, Odd, Even 8 Bits, 7 Bits Ready/Busy, X/On/X-Off No, Yes SSD-, SSD+, DTR, RTS 19200 bps, 9600 bps, 4800 bps, 2400 bps, 1200 bps, 600bps, 300 bps Valid, Invalid Ready on Power Up, Ready on Select 200 ms, 1 sec. DSR Signal DTR Signal Busy Time CSF Bin 1 *4 Line Spacing Bottom Margin Page Width * Page Length 6 LPI, 8 LPI Valid, Invalid 13.6", 8" 11", 11 2/3", 12", 14", 17", 5", 3", 3.5", 4", 5.5", 6", 7", 8", 8.5" CSF Bin 2 *4 Line Spacing Bottom Margin Page Length 6LPI, 8LPI Valid, Invalid 11", 11 2/3", 12", 14", 17", 5", 3", 3.5", 4", 5.5", 6", 7", 8", 8.5" * *1 *2 *3 *4 *5 *6 ML 721 only Appears only when IBM Proprinter emulation is selected. Appears only when Microline emulation is selected. Appears only when Epson FX emulation is selected. Appears only when optional Cut Sheet Feeder Accessory is installed. Appears only when optional Serial Interface is installed. Applicable only when the Roll Paper Stand is installed. ML720/721 Printer Handbook 73 Explanation of Menu Items These explanations are in alphabetical sequence to make it easier to look them up. Many of the items will appear only with optional equipment installed, as noted below. You will find the items Line Spacing, Form Tear-Off, Skip Over Perforation and Page Length appearing several times in the menu (once for each paper path). 7 or 8 Bit Graphics. Choose 7 (factory default) or 8 bits. 7 or 8 Bit Data word. Choose 8 (factory default) or 7 bits. Auto CR. IBM mode only. No (factory default) or Yes. Choose Yes to make your printer automatically perform a carriage return when a LF is received at the end of the line. Auto LF. No (factory default) or Yes. Change to Yes if your printer overprints. Keep this set to No if your software adds a line feed when a carriage is received at the end of a line. If your printout is consistently double spaced, set this item to No. Auto Select. No (factory default) or Yes. Determines whether or not your printer will automatically be selected after you load in paper. With the factory default (No) engaged, the printer will be deselected so that you can set the Top of Form. If you always use the same Top of Form setting, change this setting to Yes so that you don’t have to press the SEL button to select the printer after loading paper. Auto Feed XT. Epson mode only. Invalid (factory default) or Valid. In the Epson emulation, the XT signal on pin 14 of the parallel interface can control automatic line feed. Some interface cables are wired in such a way that automatic line feed is always in effect: the Auto Feed XT item eliminates this potential problem. The factory setting causes the printer to ignore this signal; if your system uses pin 14 to control automatic line feed, change the setting to Valid. Baud rate. Appears only if optional Serial Interface is installed. Range from 19,200 to 300 bps: factory setting, 9600 bps. This item sets the transmission rate for the system. Bi-Direction. Enable (factory default) or Disable. Enables or disables the bi-directional transmission (PnP) in Nibble mode. 74 Appendix B: Menu Selections Bottom Margin. Valid (factory default) or Invalid. Sets whether or not the printer will ignore the bottom margin setting. Change the setting to Invalid if you want printer to ignore the bottom margin setting. Be careful if you use this feature: it lets the printer continue printing when there’s no more paper, which can cause loss of data and may damage the printhead. Busy Line. Appears only if optional Serial Interface is installed. SSD- (factory default), SSD+, DTR, RTS. If Ready / Busy protocol (factory default) is selected, you can choose which line your system monitors for a busy signal: SSD -9V, select SSDSSD +9V, select SSD+ DTR -9V, select DTR RTS -9V, select RTS Busy Time. Appears only if optional Serial Interface is installed. 200 ms (factory default) or 1 sec. Sets the length of the busy signal when the Ready / Busy protocol (factory default) is engaged. Centering Position. Used to limit printhead travel when printing narrow columns. Select Mode 1 for Model ML720; Select Mode 1 or Mode 2 for Model ML721. Character Set. Choose IBM Set I (factory default) or IBM Set II. (EPSON, IBM mode) Choose Standard, Line Graphics. (ML mode) Code Page. Choose USA (factory default), Canada French, Multilingual, Portugal, Norway BRASCII, Abicomp. CSF Bin Select. Appears only if optional Dual-Bin Cut Sheet Feeder is installed. Choose Bin 1 (factory default) or Bin 2. CSF Type. Select Wide (default) or Narrow for CSF type. Diagnostic Test. Appears only if optional Serial Interface is installed. No (factory default) or Yes. Select Yes if you want to perform a diagnostic test of the serial interface. DRAFT Mode. Choose HSD or SSD for DRAFT font. The selected font becomes effective when “DRAFT” is selected at the Print Mode selection. ML720/721 Printer Handbook 75 DSR Signal. Applies only when optional Interface is installed. Valid (factory default) or Invalid. Used with Ready / Busy protocol to select the way your system handles the DSR Signal. DTR Signal. Applies only when optional Serial Interface is installed. Ready on Power Up (factory default) or Ready on Select. Change to Ready on Select if the DTR signal is required when the printer is selected; leave as Ready on Power Up if DTR signal is required when printer is turned on. Emulation Mode. IBM PPR (factory default), Epson FX, or ML. Selects the Printer command set you want your printer to use: IBM Proprinter III, Epson FX, or OKI Microline. ESC SI Pitch. Designate the function of ESC SI command to 17 cpi setting (default) or 20 cpi setting. Form Tear-Off. Off (factory default), 500 ms, 1 sec, or 2 sec. Form Tear-Off advances the paper to the perforation so that you can tear off a sheet of continuous-forms paper. You can turn this feature off, or you can select a time interval for the printer to wait before advancing the paper. Graphics. Bi-directional (factory default) or Uni-directional. Bi-directional graphics print faster than uni-directional graphics, but uni-directional graphics have better print registration. Bi-directional graphics printing can be optimized by adjusting the Print Registration setting in the Menu. I-Prime. Buffer Print (factory default), Buffer Clear, or Invalid. Determines how the printer will react to the I-Prime signal from your software. With the factory default engaged, when the printer receives the I-Prime signal, it will print out the contents of the buffer before resetting. Change the setting to Buffer Clear if you wish the printer to dump the contents of its buffer immediately upon receiving the I-Prime signal. Change to Invalid if you want the printer to ignore your software’s I-Prime signal. This will permit you to enter settings through the printer’s control panel which will not be automatically overridden by the software’s settings when the I-Prime signal is sent. Language Set. American (factory default), French, German, British, Danish I, Swedish, Italian, Spanish I, Japanese, Norwegian, Danish II, Spanish II, Latin American, French Canadian, Dutch, or Publisher. Replaces certain symbols with special characters used in the respective foreign languages. 76 Appendix B: Menu Selections Line Spacing. 6 lpi (factory default) or 8 lpi. Choose 8 lines per inch for tighter line spacing, to get more lines per page. Operator Panel Function. Full Operation (factory default) or Limited Operation. Change to Limited Operation to deactivate the PRINT QUARITY and CHARACTER PITCH buttons on the control panel. Then you can control these features only through your software. This can be useful when several people are using the printer and you don’t want its settings changed. Important! This feature also prevents access to the Menu. To access the Menu, turn the printer off, then hold down the SEL key while turning on the printer. Page Length. 11”, 11 2/3”, 12”, 14”, 17”, 5”, 3”, 3.5”, 4”, 5.5”, 6”, 7”, 8”, 8.5”. Selects the length of the paper you’ll be using in your printer. This enables the printer to keep track of the initial printing position on each page (Top of Form). Page Length Control. Choose page length control system for SASF mode. by Actual Page Length ..... Control page length by actual physical page length. by Menu Setting ................ Control page length by logical page length. Page Width. Appears in Menu for wide-carriage model only. Choose a page width of 13.6” or 8”. Paper out Override. No (factory default) or Yes. The paper out detector senses when less than an inch of paper remains in the printer and stops printing at that point. Changing this setting to Yes overrides the detector so you can print closer to the bottom of the page if you’re using single sheets. Be careful if you use this feature: it lets the printer continue printing when there’s no more paper, which can cause loss of data and may damage the printhead. Parity. Appears only if optional Serial Interface is installed. None (factory default), Odd, or Even. Selects the type of parity your system uses. Pin 18. +5V (factory default) or Open. Sets the signal on pin 18. Pitch. 10 cpi (factory default), 12 cpi, 15 cpi, 17.1 cpi, or 20 cpi. Selects the character width measured in characters per inch (cpi). Power Save Time. 5min (factory default), 10min, 15min, 30min, 60min. Sets the time until the printer enters the power save mode. This setting is effective when the power saving option is enabled. ML720/721 Printer Handbook 77 Power Saving. Enable (factory default) or Disable. Enables or disables the power save mode. When the power save mode is enabled, the printer enters the power save mode when the time set in the Power Save Time option elapses while the printer is idle. The SEL LED flashes and other LED turn off when the printer enters the power save mode. Print DEL Code. Microline mode only. Choose No (factory default) or Yes. Print Mode. Utility (factory default) NLQ Courier, NLQ Gothic, DRAFT. Choose one of the NLQ fonts for letter quality printing; choose utility for higher-speed draft printing. Choose DRAFT for HSD or SSD. It prints either of HSD or SSD which is selected at the DRAFT MODE. Print Registration. 0 (factory default), 0.05 mm Left, 0.15 mm Left, 0.20 mm Left, 0.25 mm Left, 0.25 mm Right, 0.20 mm Right, 0.15 mm Right, 0.10 mm Right, or 0.05 mm Right. Change the setting as required to obtain the best registration for bi-directional printing. Print Suppress Effective. Yes (factory default) or No. Enables/disables print suppress command. The factory default enables the print suppress command: the printer will ignore all data it receives after it accepts the print suppress command. Change to No to cause your printer to ignore the print suppress command. Proportional Spacing. No (factory default) or Yes. Change to Yes to engage proportional spacing of characters. Protocol. Appears only if optional Serial Interface is installed. Selects the type of protocol your system uses: Ready/Busy (factory default) or X-On/X-Off. Receive Buffer Size. 64K (factory default), 1 Line, 32K, or 128K. Selects the amount of memory devoted to holding received data. Choosing 1 Line will tie up your computer during printing, but if you about the print job the printer will stop printing much sooner. Reset Inhibit. No (factory default) or Yes. Change to Yes if you want your printer to ignore the reset command sent by software. This will prevent your software reset command from changing the settings you have made through the front panel controls or through printer commands. If you engage this feature, don’t forget that it will also prevent your software from clearing out existing settings when you finish printing one document and switch to another. 78 Appendix B: Menu Selections Serial Data 7/8 Bits. Appears only if optional Serial Interface is installed. 8 Bits (factory default) or 7 Bits. Change to 7 bits if your system uses a 7-bit data format. SI Select Pitch (10 CPI). IBM mode only. 17.1 CPI (factory default) or 15 CPI. Sets what pitch (17.1 or 15 characters per inch) will be engaged when the printer control panel is set for 10 cpi and the SI command is received. SI Select Pitch (12 CPI). IBM mode only. 20 CPI (factory default) or 12 CPI. Sets what pitch (20 or 12 characters per inch) will be engaged when the printer control panel is set for 12 cpi and the SI command is received. Size. Choose Single (factory default) or Double width and height printing. Skip Over Perforation. No (factory default) or Yes. Change to Yes if you want the printer to advance automatically to the next page when it comes within one inch of the bottom of the page. If your software has its own page formatting controls, keep this item set to No to avoid interface. Style. Choose Normal (factory default) or Italics. Time Out Print. Valid (factory default) or Invalid. When printing, if the printer doesn’t receive any data, a line feed, or a form feed signal for awhile, it will automatically dump out what’s in the print buffer. If your software spends a long time prossing between feeding portions of data to the printer, you should change the setting to Invalid to keep your printer from inadvertently dumping the received data while it’s waiting for more. Wait Time. 500 ms, 1 sec (factory default), or 2 sec. Sets the amount of the printer will wait for more data before jumping from the print position up to the form tear off position. Zero Character. Slashed (factory default) or Unslashed. The factory default will cause a slash to appear in zeros to distinguish them from the capital letter O. To disengage the slashed zero, change this to Unslashed. ML720/721 Printer Handbook 79 80 Appendix B: Menu Selections Appendix C: Printer Commands This appendix contains a listing of the printer commands for the IBM proprinter, Epson FX, and OKI MICROLINE emulations, grouped by function. IBM Proprinter Printer Commands IBM Function Bar Code Commands Select Bar Code Type and Size Print Bar Code Data Print Postnet Bar Code Data Select Bar Code Type Print Bar Code Character Sets Select IBM Character Set I Select IBM Character Set II Print from IBM Character Set III Print One Character from IBM Character Set III Select International Character Set * Select Code Page Character Size/Spacing Select 10 cpi Pitch Select 12 cpi Pitch Select 15 cpi Pitch * Select 20 cpi Pitch * Set Compressed Pitch Superscript Printing On Subscript Printing On Super script/Subscript ML720/721 Printer Handbook ASCII Code Decimal Code Hexadecimal Code ESC DLE A m n1 n8 27 16 65 m n1 n8 1B 10 41 m n1 n8 ESC DLE B m n [data] ESC DLE C n [data] 27 16 66 m n [data] 27 16 67 n [data] 1B 10 42 m n [data] 1B 10 43 n [data] ESC [ f Ln Hn Pk Pm Ps Lv Hv Pc ESC [ f Ln Hn DATA 27 91 102 Ln Hn Pk Pm Ps Lv Hv Pc 27 91 112 Ln Hn DATA 1B 5B 66 Ln Hn Pk Pm Ps Lv Hv Pc 1B 5B 70 Ln Hn DATA ESC 7 ESC 6 27 55 27 54 1B 37 1B 36 ESC \ Ln Hn 27 92 Ln Hn 1B 5C Ln Hn ESC n 27 94 n 1B 5E n ESC ! n 27 33 n 1B 21 n ESC [ TLn Hn 0 0 Hcp Lcp 27 91 84 Ln Hn 0 0 0 Hcp Lcp 0 1B 5B 54 Ln Hn 0 0 Hcp Lcp 0 DC2 ESC : ESC g ESC SI SI ESC S 1 ESC S 0 ESC T 12 1B 3A 1B 67 1B 0F 0F 1B 53 01 1B 53 00 1B 54 18 27 58 27 103 27 15 15 27 83 1 27 83 0 27 84 81 IBM Function Character Size/Spacing (cont.) Start Double Width Printing Line by Line End Double Width Printing Line by Line Double Width Printing On Double Width Printing Off Double Width and/or Height Printing On Proportional Spacing On Proportional Spacing Off Set Intercharacter Spacing * Character Style HSD Print Mode On Select Font Italics On Italics Off Emphasized Printing On Emphasized Printing Off Enhanced Printing On Enhanced Printing Off Underline On Underline Off Overscore On Overscore Off Select font by Pitch and Point ASCII Code Hexadecimal Code SO 14 0E DC4 20 14 ESC W 1 27 87 1 1B 57 1 ESC W 0 27 87 0 1B 57 00 ESC [ @ Ln Hn m1 mk 27 91 64 Ln Hn m1 mk 27 80 1 27 80 0 27 86 n 1B 5B 40 Ln Hn m1 mk 1B 50 01 1B 50 00 1B 56 n 27 35 48 27 73 n 27 37 71 27 37 72 27 69 27 70 27 71 27 72 27 45 1 27 45 0 27 95 1 27 95 0 27 16 70 Pn0 Pn Lp Hp 27 91 73 Ln Hn Hfid Lfid Hfwd Lfwd fa Nul Hc Lc 27 91 100 Ln Hn Pn 1B 23 30 1B 49 n 1B 25 47 1B 25 48 1B 45 1B 46 1B 47 1B 48 1B 2D 01 1B 2D 00 1B 5F 01 1B 5F 00 1B 10 46 Pn0 Pn Lp Hp 1B 5B 49 Ln Hn Hfid Lfid Hfwd Lfwd fa Nul Hc Lc 1B 5B 64 Ln Hn Pn 27 61c1 c2 m n a1 a2 d1 dk 27 36 1B 3D c1 c2 m n a1 a2 d1 dk 1B 24 27 25 n 1B 19 n ESC P1 ESC P0 ESC Vn ESC # 0 ESC I n ESC % G ESC % H ESC E ESC F ESC G ESC H ESC - 1 ESC - 0 ESC 1 ESC 0 ESC DEL F Pn0 Pn Lp Hp Select Font ESC [ I Ln Hn Hfid Lfid Hfwd Lfwd fa Nul Hc Lc Select Print Quality ESC [ d Ln Hn Pn Custom Characters ESC = c1 c2 m n a1 a2 d1 Down Line Load Characters dk Copy ROM Character Set ESC $ to RAM Character Set * Cut-Sheet Feeder Control ESC EM n Insert/Eject Paper * 82 Decimal Code Appendix C: Priner Commands IBM Function Graphics Single Density Graphics Double Density Graphics Double Speed/Double Density Graphics Quadruple Density Graphics Horizontal Control Backspace Carriage Return Margin Setting, Left & Right Horizontal Tab Set Horizontal Tab Clear Horizontal Tab Settings Set 4-column Tabulation * Set Print Position * ASCII Code Decimal Code ESC K Ln Hn [data] ESC L Ln Hn [data] ESC Y Ln Hn [data] 27 75 Ln Hn [data] 27 76 Ln Hn [data] 27 89 Ln Hn [data] 1B 4B Ln Hn [data] 1B 4C Ln Hn [data] 1B 59 Ln Hn [data] ESC Z Ln Hn [data] 27 90 Ln Hn [data] 1B 5A Ln Hn [data] BS CR ESC X n m 8 13 27 88 n m 08 0D 1B 58 n m HT ESC D n1 n2 nk 0 ESC D 0 0 9 27 68 n1 n2 nk 0 27 68 0 0 09 1B 44 n1 n2 nk 0 1B 44 0 0 27 37 66 n1 n2 n3 n4 27 16 64 Pn A1 A2 P1 P2 P3 P4 27 124 Ln Hn 27 85 1 27 85 0 27 100 Ln Hn 1B 25 42 n1 n2 n3 n4 1B 10 40 Pn A1 A2 P1 P2 P3 P4 1B 7C Ln Hn 1B 55 1 1B 55 00 1B 64 Ln Hn ESC C 0 n 27 67 0 n 1B 43 00 n ESC C n ESC N n ESC O ESC 4 27 67 n 27 78 n 27 79 27 52 1B 43 n 1B 4E n 1B 4F 1B 34 FF LF ESC J n ESC % 5 n ESC 5 1 ESC 5 0 ESC ] ESC 1 ESC 0 12 10 27 74 n 27 37 53 n 27 53 1 27 53 0 27 93 27 49 27 48 0C 0A 1B 4A n 1B 25 35 n 1B 35 01 1B 35 00 1B 5D 1B 31 1B 30 ESC % B n1 n2 n3 n4 ESC DLE @ Pn A1 A2 P1 P2 P3 P4 Set Relative Dot Position * ESC | Ln Hn Uni-directional Print On ESC U 1 Uni-directional Print Off ESC U 0 Set Relative Print Position ESC d Ln Hn Vertical Control Page Length, Set in n Inches Page Length, Set in Lines Skip Over Perforation On Skip Over Perforation Off Set Top of Form at Current Position Form Feed Line Feed Perform n/216" Line Feed Perform n/144" Line Feed Auto Line Feed On Auto Line Feed Off Reverse Line Feed Set Line Spacing to 7/72" Set Line Spacing to 1/8" ML720/721 Printer Handbook Hexadecimal Code 83 IBM Function Vertical Control (cont.) Set Line Spacing to n/216" Set Line Spacing to 7/144" * Set Line Spacing to n/72" Line feed compound command Perform Line Feed Set by ASCII Code Decimal Code Hexadecimal Code 27 51 n 27 35 57 n 27 65 n 27 16 72 Pno A1 A2 P1 P2 P3 27 50 1B 33 n 1B 25 39 n 1B 41 n 1B 10 48 Pno A1 A2 P1 P2 P3 1B 32 11 27 66 n1 n2 nk 0 27 82 0B 1B 42 n1 n2 nk 0 1B 52 CAN ESC { n ESC 8 ESC 9 ESC Q STX 24 27 123 n 27 56 27 57 27 81 2 18 1B 7B n 1B 38 1B 39 1B 51 02 ESC Q STX 27 81 22 1B 51 16 DC1 17 11 ESC 3 n ESC % 9 n ESC A n ESC DLE H Pno A1 A2 P1 P2 P3 ESC 2 ESC A n Command VT Vertical Tab ESC B n1 n2 nk 0 Set Vertical Tab Reset Vertical Tab to ESC R Defaults Miscellaneous Cancel Change Emulation * Paper-Out Sensor On Paper-Out Sensor Off Print Suppress Mode On, ML 320 Turbo Print Suppress Mode On, ML 321 Turbo Print Suppress Mode Off (either Model) Set Initial Conditions ESC [ K Ln Hn Init Id a1 a2 27 91 75 Ln Hn Init Id a1 a2 ESC i n 27 105 n Incremental print mode On, Off Software I-Prime * ESC } 0 Stop Printing ESC j 27 125 0 27 106 1B 5B 4BLn Hn Init Id a1 a2 1B 69 n 1B 7D 00 * OKI-Unique command 84 Appendix C: Priner Commands Epson FX Printer Commands Epson Function Bar Code Commands Select Bar Code Type and Size * Print Bar Code Data * Print Postnet Bar Code Data * Print Bar Code Character Sets Select International Character Set Select Epson Character Set Permit Printing of Upper Range Control Codes Cancel Printing of Upper Range Control Codes Character table selection Character Size/Spacing Select 10 cpi Pitch Select 12 cpi Pitch Select 15 cpi Pitch Select 20 cpi Pitch Cancel 20 cpi Pitch Set Compressed Pitch Superscript Printing On Subscript Printing On Superscript/Subscript Printing Off Begin Double Width Printing Line by Line End Double Width Printing Line by Line Double Width Printing On Double Width Printing Off ML720/721 Printer Handbook ASCII Code Decimal Code Hexadecimal Code ESC DLE A m n1 n8 27 16 65 m n1 n8 1B 10 41 m n1 n8 ESC DLE B m n [data] ESC DLE C n [data] 27 16 66 m n [data] 27 16 67 n [data] 1B 10 42 m n [data] 1B 10 43 n [data] ESC ( B Ln Hn Pk Pm Ps 27 40 66 Ln Hn Pk Lv Hv Pc DATA Pm Ps Lv Hv Pc DATA 1B 28 42 Ln Hn Pk Pm Ps Lv Hv Pc DATA ESC R n 27 82 n 1B 52 n ESC t n 27 116 n 1B 74 n ESC 6 or ESC I 1 27 54 or 27 73 1 1B 36 or 1B 49 01 ESC 7 or ESC I 0 27 55 or 27 73 0 1B 37 or 1B 49 00 ESC ( t Ln Hn Pn1 Pn2 Pn3 27 40 116 Ln Hn Pn1 1B 28 74 Ln Hn Pn1 Pn2 Pn3 Pn2 Pn3 ESC P ESC M ESC g ESC SI DC2 SI ESC S 1 ESC S 0 ESC T 27 80 27 77 27 103 27 15 18 15 27 83 1 27 83 0 27 84 1B 50 1B 4D 1B 67 1B 0F 12 0F 1B 53 01 1B 53 00 1B 54 ESC SO 27 14 1B 0E DC 4 20 14 ESC W 1 27 87 1 1B 57 01 ESC W 0 27 87 0 1B 57 00 85 Epson Function Character Size/Spacing (cont.) Double Height Printing On Proportional Spacing On Proportional Spacing Off Set Intercharacter Spacing Character Style Select HSD Print Mode * Select Utility or NLQ Print Mode Select Draft Font Select font by Pitch and Point Select NLQ Type Composite Command Italics On Italics Off Emphasized Printing On Emphasized Printing Off Enhanced Printing On Enhanced Printing Off Underline On Underline Off Custom Characters Down Line Load Custom Characters Copy ROM Character Set to RAM Character Set Custom Character Set On Custom Character Set Off ASCII Code 86 Hexadecimal Code ESC w n ESC p 1 ESC p 0 ESC SP n 27 119 n 27 112 1 27 112 0 27 32 n 1B 77 n 1B 70 01 1B 70 00 1B 20 n ESC ( n ESC x n 27 40 n 27 120 n 1B 28 n 1B 78 n ESC y Pn ESC X Pn Lp Hp 27 40 85 Pn 27 88 Pn Lp Hp 1B 28 55 Pn 1B 58 Pn Lp Hp ESC k n ESC ! n ESC 4 ESC 5 ESC E ESC F ESC G ESC H ESC - 1 ESC - 0 27 107 n 27 33 n 27 52 27 53 27 69 27 70 27 71 27 72 27 45 1 27 45 0 1B 6B n 1B 21 n 1B 34 1B 35 1B 45 1B 46 1B 47 1B 48 1B 2D 01 1B 2D 00 ESC & 0 n1 n2 a [data] 27 38 0 n1 n2 a [data] 1B 26 00 n1 n2 a [data] ESC : 0 n 0 27 58 0 n 0 1B 3A 0 n 0 ESC % 0 ESC % 1 27 37 0 27 37 1 1B 25 00 1B 25 01 27 25 n 1B 19 n ESC K L n Hn [data] ESC L L n Hn [data] ESC Y L n Hn [data] 27 75 L n Hn [data] 27 76 L n Hn [data] 27 89 L n Hn [data] 1B 4B L n Hn [data] 1B 4C L n Hn [data] 1B 59 L n Hn [data] ESC Z L n Hn [data] 27 90 L n Hn [data] 1B 5A L n Hn [data] Cut Sheet Feeder Control ESC EM n Insert/Eject Paper Graphics Single Density Graphics Double Density Graphics Double Speed/Double Density Graphics Quadruple Density Graphics Decimal Code Appendix C: Priner Commands Epson Function ASCII Code Graphics (cont.) ESC * m Ln Hn [data] Graphics Select/Print Reassign Graphics ESC ? m n Select 9-pin Graphics ESC m Ln Hn [data] Printing Horizontal Control Backspace Carriage Return Margin Setting, Left Margin Setting, Right Horizontal Tab Set Horizontal Tab Clear Horizontal Tab Settings Set Print Position BS CR ESC l n ESC Q n HT ESC D n1 n2 nk 0 ESC D 0 0 ML720/721 Printer Handbook Hexadecimal Code 27 42 m Ln Hn [data] 1B 2A m Ln Hn [data] 27 63 m n 1B 3F m n 27 94 m Ln Hn [data] 1B 5E m Ln Hn [data] 8 13 27 108 n 27 81 n 9 27 68 n1 n2 nk 0 27 68 0 0 08 0D 1B 6C n 1B 51 n 09 1B 44 n1 n2 nk 00 1B 44 00 00 27 16 64 Pn A1 A2 P1 P2 P3 P4 27 36 Ln Hn 27 92 Ln Hn 27 85 1 27 85 0 27 60 1B 10 40 Pn A1 A2 P1 P2 P3 P4 1B 24 Ln Hn 1B 5C Ln Hn 1B 55 01 1B 55 00 1B 3C ESC C 0 n 27 67 0 n 1B 43 00 n ESC C n ESC N n ESC O 27 67 n 27 78 n 27 79 1B 43 n 1B 4E n 1B 4F FF LF ESC J n ESC % 5 n ESC j n ESC 2 ESC 0 ESC 1 ESC A n ESC % 9 n 12 10 27 74 n 27 37 53 n 27 106 n 27 50 27 48 27 49 27 65 n 27 37 57 n 0C 0A 1B 4A n 1B 25 35 n 1B 6A n 1B 32 1B 30 1B 31 1B 41 n 1B 25 39 n ESC DLE @ Pn A1 A2 P1 P2 P3 P4 Set Absolute Dot Position ESC $ Ln Hn Set Relative Dot Position ESC \ Ln Hn Uni-directional Print On ESC U 1 Uni-directional Print Off ESC U 0 Print Uni-directional for ESC < One Line Vertical Control Page Length, Set in n Inches Page Length, Set in Lines Skip Over Perforation Set Skip Over Perforation Reset to Default Form Feed Line Feed Perform n/216" Line Feed Perform n/144" Line Feed * n/216" Reverse Line Feed Set Line Spacing to 1/6" Set Line Spacing to 1/8" Set Line Spacing to 7/72" Set Line Spacing to n/72" Set Line Spacing to n/144" * Decimal Code 87 Epson Function Vertical Control (cont.) Set Line Spacing to n/216" Vertical Tab Set Vertical Tab Stops Line feed compound command Reset Vertical Tab to Defaults Set Vertical Format Unit (VFU) Set Vertical Tab Channel Set Basic Unit Set Page Length in Defined Unit Set Page Format Miscellaneous Cancel Change Emulation * Delete One Character Initialize Printer Half-Speed Printing On Half-Speed Printing Off Paper-Out Sensor On * Paper-Out Sensor Off * Print Suppress Mode On Print Suppress Mode Off Set Most Significant Bit to Zero Set Most Significant Bit to One Incremental print mode On, Off Cancel Most Significant Bit Control Software I-Prime * Justification Left Justification Center Justification Right Justification Within Line Justification ASCII Code Decimal Code Hexadecimal Code ESC 3 n VT ESC B n1 n2 nk 0 ESC DLE H Pno A1 A2 P1 P2 P3 ESC B 0 27 51 n 11 27 66 n1 n2 nk 0 27 16 72 Pno A1 A2 P1 P2 P3 27 66 0 1B 33 n 0B 1B 42 n1 n2 nk 00 1B 10 48 Pno A1 A2 P1 P2 P3 1B 42 00 ESC b m n1 n2 nk 0 1B 62 m n1 n2 nk 0 ESC ( c Ln Hn Lt Ht Lb Hb 27 98 m n1 n2 nk 0 27 47 n 27 40 85 Ln Hn Pn 27 40 67 C Ln Hn Lp Hp 27 40 99 Ln Hn Lt Ht Lb Hb 1B 2Fn 1B 28 55 Ln Hn Pn 1B 28 43 C Ln Hn Lp Hp 1B 28 63 Ln Hn Lt Ht Lb Hb CAN ESC { n DEL ESC @ ESC s 1 ESC s 0 ESC 9 ESC 8 DC3 DC1 ESC = 24 27 123 n 127 27 64 27 115 1 27 115 0 27 57 27 56 19 17 27 61 18 1B 7B n 7F 1B 40 1B 73 0 1B 73 00 1B 39 1B 38 13 11 1B 3D ESC > 27 62 1B 3E ESC i n 27 105 n 1B 69 n ESC # 27 35 1B 23 ESC } 0 27 125 0 1B 7D 00 ESC a 0 ESC a 1 ESC a 2 ESC a 3 27 97 0 27 97 1 27 97 2 27 97 3 1B 61 00 1B 61 01 1B 61 02 1B 61 03 ESC/n ESC ( U Ln Hn Pn ESC ( C Ln Hn Lp Hp * OKI-Unique Command 88 Appendix C: Priner Commands OKI Microline (ML) Printer Commands Microline Function ASCII Code Bar Code Commands Select Bar Code Type ESC DLE A m n1 n8 and Size Print Bar Code Data ESC DLE B n [data] Print Postnet Bar Code ESC DLE C n [data] Data Character Sets Select Standard Character Set Select Line Character Set (comparable to IBM Set 2) Block character set Select International Character Set Select Code Page Character Size/Spacing Select 10 cpi Pitch Select 12 cpi Pitch Select 15 cpi Pitch Select 17.1 cpi Pitch Select 20 cpi Pitch Superscript Printing On Superscript Printing Off Subscript Printing On Subscript Printing Off Double Width Printing Double Height Printing On Double Height Printing Off Select Print Mode Proportional Spacing On Proportional Spacing Off Set Intercharacter Spacing ML720/721 Printer Handbook Decimal Code Hexadecimal Code 27 16 65 m n1 n8 1B 10 41 m n1 n8 27 16 66 n [data] 27 16 67 n [data] 1B 10 42 n [data] 1B 10 43 n [data] ESC ! 0 27 33 48 1B 21 30 ESC ! 2 27 33 50 1B 21 32 ESC ! 1 ESC ! n 27 33 49 27 33 n 1B 21 31 1B 21 n ESC [ T Ln Hn 0 0 Hcp Lcp 0 27 91 84 Ln Hn 0 0 Hcp Lcp 0 1B 5B 54 Ln Hn 0 0 Hcp Lcp 0 RS FS ESC g GS ESC # 3 ESC J ESC K ESC L ESC M US ESC US 1 30 28 27 103 29 27 35 51 27 74 27 75 27 76 27 77 31 27 31 49 1E 1C 1B 67 1D 1B 23 33 1B 4A 1B 4B 1B 4C 1B 4D 1F 1B 1F 31 ESC US 0 27 31 48 1B 1F 30 ESC & n1 n2 n3 n4 : ESC Y ESC Z ESC N n 27 38 n1 n2 n3 n4 58 27 89 27 90 27 78 n 1B 26 n1 n2 n3 n4 3A 1B 59 1B 5A 1B 4E n 89 Microline Function Character Style HSD Print Mode On Select Utility Print Mode Select NLQ Courier Font Select NLQ Gothic Font Select Font by Pitch and Point Italics On Italics Off Emphasized Printing On Enhanced Printing On Emphasized and Enhanced Printing Off Underline On Underline Off Custom Characters Copy ROM Character Set to RAM Character Set Download Custom Ascender Characters Download Custom Descender Characters Select DLL Utility Character Font Select Down Line Load NLQ Character Font ASCII Code Hexadecimal Code ESC # 0 ESC 0 ESC 1 ESC 3 ESC DLE F Pn0 Pn Lp Hp ESC ! / ESC ! * ESC T ESC H ESC I 27 35 48 27 48 27 49 27 51 27 16 70 Pn0 Pn Lp Hp 27 33 47 27 33 42 27 84 27 72 27 73 1B 23 30 1B 30 1B 31 1B 33 1B 10 46 Pn0 Pn Lp Hp 1B 21 2F 1B 21 2A 1B 54 1B 48 1B 49 ESC C ESC D 27 67 27 68 1B 43 1B 44 ESC $ 27 36 1B 24 ESC % A m n1 n11 27 37 65 m n1 n11 1B 25 41 m n1 n11 ESC % D m n1 n11 27 37 68 m n1 n11 1B 25 44 m n1 n11 ESC 2 27 50 1B 32 ESC 7 27 55 1B 37 27 83 1B 53 27 86 1B 56 27 25 n 1B 19 n 27 80 or 27 81 27 82 27 35 81 1B 50 or 1B 51 1B 52 1B 23 51 Cut Sheet Feeder Control Cut Sheet Feeder Insert ESC S Sheet ESC V Cut Sheet Feeder Sheet Eject Cut Sheet Feeder Bin 1 or ESC EM n Bin 2 Selection Graphics Single Density Graphics ESC P or ESC Q Double Density Graphics ESC R Double Speed/Quadruple ESC # Q Density Graphics 90 Decimal Code Appendix C: Priner Commands Microline Function ASCII Code Graphics (cont.) Graphics Mode Selection ESC * n1 n2 : Graphics Print Mode ETX Selection Horizontal Control Backspace Carriage Return Horizontal Tab Margin Setting, Left Margin Setting, Right Move to the Left Move to the Right Set Print Position Set Multiple Print Positions Set Horizontal Tab by Characters Set Horizontal Tab by Dot Columns Clear Horizontal Tab Settings Uni-directional Print On Uni-directional Print Off Vertical Control Page Length, Set in 1/2" Increments Page Length, Set in Lines Skip Over Perforation On Skip Over Perforation Off Set Top of Form Form Feed Skip Down Selected Number of Lines Line Feed (with Carriage Return) Line Feed (without Carriage Return) Carriage Return/Line Feed Selection Command ML720/721 Printer Handbook Decimal Code Hexadecimal Code 27 42 n1 n2 58 3 1B 2A n1 n2 3A 03 BS CR HT ESC % C n1 n2 n3 ESC % R n1 n2 n3 n4 ESC % F n1 n2 n3 n4 ESC % E n1 n2 n3 n4 ESC % B n1 n2 n3 n4 ESC DEL @ Pn a1 a2 P1 P2 P3 P4 ESC HT x y z CR 8 13 9 27 37 67 n1 n2 n3 27 37 82 n1 n2 n3 n4 27 37 70 n1 n2 n3 n4 27 37 69 n1 n2 n3 n4 27 37 66 n1 n2 n3 n4 27 16 64 Pn a1 a2 P1 P2 P3 P4 27 9 x y z 13 08 0D 09 1B 25 43 n1 n2 n3 1B 25 52 n1 n2 n3 n4 1B 25 46 n1 n2 n3 n4 1B 25 45 n1 n2 n3 n4 1B 25 42 n1 n2 n3 n4 1B 10 40 Pn a1 a2 P1 P2 P3 P4 1B 09 x y z 0D ESC HTX x y z w CR 27 3 x y z w 13 1B 03 x y z w 0D ESC HT CR 27 9 13 1B 09 0D ESC ESC = 27 45 27 61 1B 2D 1B 3D ESC G Hn Ln 27 71 Hn Ln 1B 47 Hn Ln ESC F Hn Ln ESC % S n ESC % S 0 ESC 5 FF ESC VT Hn Ln 27 70 Hn Ln 27 37 83 n 27 37 83 0 27 53 12 27 11 Hn Ln 1B 46 Hn Ln 1B 25 53 n 1B 25 53 00 1B 35 0C 1B 0B Hn Ln LF 10 0A ESC DC2 27 18 1B 12 ESC ? n : 25 63 n 58 1B 3F n 3A 91 Microline Function Vertical Control (cont.) Perform n/144" Line Feed Reverse Line Feed Set Line Spacing to 1/8" Set Line Spacing to 1/6" Set Line Spacing to n/144" Vertical Tab Execute VFU Vertical Tab Set Vertical Tab Channels Line feed compound command Miscellaneous Cancel Initialize Printer Half-Speed Printing On Half-Speed Printing Off Change Emulation Paper-Out Sensor On Paper-Out Sensor Off Print Suppress Mode On Print Suppress Mode Off Software I-Prime Incremental print mode On, Off 92 ASCII Code Decimal Code Hexadecimal Code ESC % 5 n ESC LF ESC 8 ESC 6 ESC % 9 n VT VT n DC4 SP SP n SP SP? ESC DLE H Pno A1 A2 P1 P2 P3 27 37 53 n 27 10 27 56 27 54 27 37 57 n 11 11 n 20 32 32 n 32 32 63 27 16 72 Pno A1 A2 P1 P2 P3 1B 25 35 n 1B 0A 1B 38 1B 36 1B 25 39 n 0B 0B n 14 20 20 n 20 20 3F 1B 10 48 Pno A1 A2 P1 P2 P3 CAN ESC CAN ESC < ESC > ESC { n ESC E 0 ESC E 1 DC3 DC1 ESC } 0 ESC i n 24 27 24 27 60 27 62 27 123 n 27 69 0 27 69 1 19 17 27 125 0 27 105 n 18 1B 18 1B 3C 1B 3E 1B 7B n 1B 45 00 1B 45 01 13 11 1B 7D 00 1B 69 n Appendix C: Priner Commands Appendix D: ASCII Character Codes Lower ASCII Character Sets Lower ASCII Character Sets (1/4) ML720/721 Printer Handbook 93 Lower ASCII Character Sets (2/4) 94 Appendix D: ASCII Character Codes Lower ASCII Character Sets (3/4) ML720/721 Printer Handbook 95 Lower ASCII Character Sets (4/4) 96 Appendix D: ASCII Character Codes Upper ASCII Character Sets Upper ASCII Character Sets (1/4) ML720/721 Printer Handbook 97 Upper ASCII Character Sets (2/4) 98 Appendix D: ASCII Character Codes Upper ASCII Character Sets (3/4) ML720/721 Printer Handbook 99 Upper ASCII Character Sets (4/4) 100 Appendix D: ASCII Character Codes Epson International Character Substitutions ML720/721 Printer Handbook 101 IBM International Character Substitutions 102 Appendix D: ASCII Character Codes MICROLINE International Character Substitutions ML720/721 Printer Handbook 103 Code Page Character Sets Code Page Character Sets (1/3) 104 Appendix D: ASCII Character Codes Code Page Character Sets (2/3) ML720/721 Printer Handbook 105 Code Page Character Sets (3/3) 106 Appendix D: ASCII Character Codes Appendix E: Interfacing This appendix gives the pin assignments for the parallel interface and Universal Serial Bus (USB). It also explains how to install the optional Serial Interface Board and gives the pin assignments for the serial interface. Pin Assignments for Parallel Interface Signals Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19-30 31 32 33 3435 36 Signal Strobe Data 1 Data 2 Data 3 Data 4 Data 5 Data 6 Data 7 Data 8 Acknowledge Busy Paper End Select Auto Feed Not used 0V Chassis Ground +5V * 0V Input Prime Fault 0V Not used Not used Select In Return Pin Direction 19 20 21 22 23 24 25 26 27 28 29 30 No Return To Printer To Printer To Printer To Printer To Printer To Printer To Printer To Printer To Printer From Printer From Printer From Printer From Printer To Printer No Return No Return Signal Ground Frame Ground From Printer Ground To Printer From Printer Signal Ground High Level To Printer * 1.2 mA maximum ML720/721 Printer Handbook 107 Universal Serial Bus (USB) Universal Serial Bus Specification Revision 1.1 compliance. 1. Connector • Printer Side: “B” Receptacle (Upstream Input to the USB Device) • Cable Side: Series “B” Plug 2. Cable • Cable Length: Max 5 m (A cable must be met USB Spec Rev 1.1 for normal operation Note: Cable is not provided. 3. Table of USB I/F signals Contact Number 1 2 3 4 Sell Signal Name Vbus (Not Used) DD+ GND Shield 4. Connector pin arrangement 108 2 1 3 4 Appendix E: Interfacing Installing the Serial Interface Caution! Handle the interface board with care to avoid damaging its components. The components can also be damaged by static discharges. We recommend that you leave the board in its protective packaging until you’ve read these instructions and are ready to install it. Make sure the printer is unplugged before you install the board. Parallel port Component side of board ML720/721 Printer Handbook 1. Remove plastic covering over opening for serial board in back panel:. – insert tip of flat-blade screwdriver at top and twist it to snap plastic molding holding cover in place. – repeat procedure for molding at bottom of cover – press inward on cover with your fingers and bend it back and forth until it snaps off. 2. Holding board by cable connector, with components facing away from parallel interface, gently slide it into opening against guides at top and bottom. Press firmly into place. 109 Board 3. By inserting board to the far end, it is locked by the lock piece inside. Lock piece 4. Connect suitable interface cable (must be purchased separately) to printer connector and to serial port of your computer. Be sure to tighten screws on both ends of cable to keep it in place. Important! Make sure that you do not have a parallel cable connected to the printer when you’re using the serial interface. You can switch to the parallel interface without removing the serial board, but only one cable can be attached at a time. When the serial interface is installed, the “Serial I/F” portion of the Menu will become active (see page 73). 110 Appendix E: Interfacing Pin Assignments for Serial Interface Signals Pin Signal Symbol Direction 1 2 3 4 5 6 7 8-10 11 12-19 20 21-25 Protective Ground Transmitted Data Received Data Request to Send Not used Data Set Ready Signal Ground Not Used Supervisory Send Data Not Used Data Terminal Ready Not Used PG TD RD RTS From Printer To Printer From Printer ML720/721 Printer Handbook DSR SG To Printer SSD From Printer DTR From Printer 111 Oki Data Corporation 4-11-22 Shibaura, Minato-ku, Tokyo, 108-8551, Japan Tel : (81) 3 5445 6158 Fax : (81) 3 5445 6189 www.okidata.co.jp Oki Data (Singapore) Pte Ltd. 78 Shenton Way, #09-01, Singapore 079120 Tel : (65) 6221 3722 Fax : (65) 6421 1688 www.okidata.com.sg Oki Systems (Thailand) Ltd. 956 Udomvidhya Building, Tel : (662) 636 2535 6th Floor, Rama IV Rd., Fax : (662) 636 2536 Bangkok 10500, Thailand www.okisysthai.com Oki Hong Kong Limited Suite 1909, Tower 3, China Hong Kong City, 33 Canton Rd., Tsimshatsui, Kowloon, Hong Kong Tel : (852) 2736 0130 Fax : (852) 2376 3725 The IPL Group Tel : (02) 9690 8200 Fax : (02) 9690 8300 www.oki.com.au 63-85 Victoria Street Beaconsfield NSW 2015, Australia Comworth Systems Ltd. 10 Constellation Drive Mairangi Bay, Auckland, New Zealand Tel : (09) 477 0500 Fax : (09) 477 0549 www.comworth.co.nz Oki Data Corporation 4-11-22, Shibaura, Minato-ku Tokyo 108-8551 Japan Tel: (81) 3 5445 6158 Fax: (81) 3 5445 6189 42113904EE
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