Oki 720 manual

MICROLINE 720/721 Printer Handbook[...]

Every effort has been made to ensure that the information in this document is com- plete, accurate and up-to-date. OKI assumes no responsibility for the r esults of errors beyond its control. OKI also cannot guarantee that changes in software and equip- ment made by other manufacturers, and referr ed to in this handbook, will not affect the applica[...]

Important Safety Instructions Y our OKI printer has been carefully designed to give you years of safe, r eliable per- formance. As with all electrical equipment, however , there are a few basic precau- tions you should take to avoid hurting yourself or damaging the unit: • Read the setup and operation instructions in this manual carefully . Be su[...]

• If you’r e using an extension cord or power strip with the printer , make sure that the total of the amperes r equired 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 tha[...]

C ontents Introduction ............................................................................................................. 1 Chapter 1: Installation ........................................................................................... 3 Unpacking .......................................................................................[...]

Performing Basic T asks ............................................................................................ 39 Selecting Print Quality .................................................................................. 39 Selecting Character Pitch .............................................................................. 40 T esting Y o[...]

Appendix D: ASCII Character Codes ............................................................... 93 Lower ASCII Character Sets ................................................................................... 93 Upper ASCII Character Sets .................................................................................... 97 Epson International [...]

ML720/721 Printer Handbook 1 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 futur e refer ence. 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 [...]

2 Introduction[...]

ML720/721 Printer Handbook 3 C hapter 1: Installation This chapter explains how to unpack and install your new printer . Unpac king Unpack your printer and make sure you have the following items. If you ar e missing any of these items, contact your dealer immediately for a r eplacement. • Printer • Ribbon cartridge • AC cor d It is not includ[...]

4 Installation Removing Shipping Retainers 1. Open access cover by grasping tabs at either end and lifting. 2. Remove printhead shipping retainer (leave cover open for installation of rib- bon). Ta b Shipping retainer[...]

ML720/721 Printer Handbook 5 3. Hold the knob and remove the paper separator . 4. Remove the protective material. 5. Set and attach the post to the“ ∆ ”mark of the upper cover and the paper sepa- rator . 6. Remove the protective material from the pull-up roller assembly . Installing Ribbon Cartridge 1. W ith access cover open, grasp print- he[...]

6 Installation 3. Holding ribbon cartridge with knob fac- ing up and ribbon sheild facing platen, fit grooves on either side at back end of cartridge over pins on ribbon plate. 4. Lower front of cartridge over printhead until it snaps into place, then turn knob in direction of arr ow (clockwise) to take up ribbon slack. 5. The headgap lever by the [...]

ML720/721 Printer Handbook 7 Interf ace por t Wire loops Pin assignments for the parallel, USB and the serial interfaces are listed in appendix E. Y ou must supply the cable for connecting your printer to your computer . a. In the case of parallel interface cable 1. Make sur e both printer and computer are OFF . 2. Locate interface port on back of [...]

8 Installation 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. 3. T urn 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 tha[...]

ML720/721 Printer Handbook 9 C hapter 2: Loading Paper Y our printer has provision for single-sheet paper feed from the top and for continu- ous-form paper feed fr om the rear . Y ou can also install options: the Cut Sheet Feeder , which holds a stack of 100 sheets for feeding fr om the top and the Push and/or Pull T ractors for feeding continuous-[...]

10 Loading Paper 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 1 1 lb – Minimum 3” wide (* 2 ) • Interleaf, multi-part forms (with carbon paper) – Original, plus 4 copies [...]

ML720/721 Printer Handbook 11 SEL light Mov e to"T OP" Loading Single-Sheet Paper The single-sheet paper path is best for letter head stationery , memos, and envelopes. W e also recommend it for printing graphs and charts because it provides the most accurate contr ol of the paper . T o load in single sheets of paper: If you have any cont[...]

12 Loading Paper P aper separator Wire f eed guide P aper f eed guides Press Flashes 3. Grasp back of paper separator and un- snap 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[...]

ML720/721 Printer Handbook 13 M 1 2 3 Baseline Hold Press to feed paper down in micro increments Press to feed paper up in micro increments 5. Baseline for T op of Form (TOF) on pa- per is indicated by red line on clear plas- tic paper shield. 6. If desired, change TOF setting using control panel: ☛ to set TOF further down on page, hold SHIFT but[...]

14 Loading Paper P osition "Rear" P aper separator Loading Rear-Feed Paper The rear-feed paper path is recommended for single-thickness, continuous fan-fold paper when printing spreadsheets, long r eports, etc. For graphics or charts, it’s best to use the single-sheet paper path. T o load continuous-form paper from the r ear: 1. If you [...]

ML720/721 Printer Handbook 15 T ractors 6. Locate tractors. 4. Hold up the middle of the paper sepa- rator , and pull upwards. 5. Rotate the paper separator forward and stand against the pull-up r oller assem- bly . P aper separator Pull-up roller assembly[...]

16 Loading Paper Lock le ver T ractor cov er 9. Pull paper , and place first two holes on each side over tractor pins. Please note that an equal number of pa- per holes must be engaged on either tractor in or der to ensure proper paper feed. P aper holes on pins 7. Pull up on lock levers to release trac- tors. Position right-hand tractor for width [...]

ML720/721 Printer Handbook 17 10. Replace the paper separator , and insert until the paper separator and upper cover marks align. " "mark " "mark P aper separator Upper cov er[...]

18 Loading Paper 1 1. Close tractor covers and adjust left trac- tor to position edge of paper: reference marks on printer indicate left edge po- sition for the two most common paper sizes. When paper is properly aligned, lock left tractor in place by pushing back on lock lever . 12. Adjust right tractor so that paper holes are centered on pins(car[...]

ML720/721 Printer Handbook 19 15. Baseline for top of Form(TOF) on pa- per is indicated by red line on clear plas- tic paper shield. 16.If desired, change TOF setting using control panel: If form tear off is being selected in the printer menu, pr ess the TEAR button to bring the paper down to the print position. Hold down the SHIFT button and relea[...]

20 Loading Paper 17. Press SEL button (SEL light will come on). T o temporarily change the T op 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 r etain this setting un- til you turn it of f.[...]

ML720/721 Printer Handbook 21 Paper Handling Y our printer has several handy paper handling features: • T ear • Form T ear-of f • Paper Park T ear 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 posit[...]

22 Loading Paper Forms T ear-off Feature Caution! Do not engage Forms T ear-of f when printing on labels! The Forms T ear-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-of f position until the printer receiv[...]

ML720/721 Printer Handbook 23 Switching Paper Paths T o switch from continuous-form feed from the r ear or bottom (optional push or pull tractor installed) of the printer to single-sheet feed from the top: 1. T ear off printed pages. 2. Press P ARK button. 3. Swing wire guide up into paper separator , then pivot separator to upright posi- tion. 4. [...]

24 Loading Paper[...]

ML720/721 Printer Handbook 25 C hapter 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 select- ing typeface/print quality , selecting character pitch, testing your printer , and reset- ting T op of Form to the factory defau[...]

26 Operation The seven buttons to the left on your control panel are multi-function buttons. In r outine 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 th[...]

ML720/721 Printer Handbook 27 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: 1. POWER light: Glows whenever printer is on. 2. SEL light: Glows when printer is selected, ready to receive data. Flashes when [...]

28 Operation 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, P ARK, 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, T OF) can be accessed by means of the SHIFT[...]

ML720/721 Printer Handbook 29 Summary of Front Panel Button Functions SEL SEL + SHIFT SHIFT LF LF+ SHIFT FF/LOAD FF/LOAD +SHIFT TEAR Selects/deselects printer. Resets Paper Out of Paper Jam Alarm. Also ends Font Test or Rolling ASCII test . Activates Menu Mode. With printer deselected: used with other keys to set and store Top of Form. Advances pap[...]

30 Operation TEAR+ SHIFT PARK PARK+ SHIFT QUIET QUIET+ SHIFT PRINT QUALITY PRINT QUALITY +SHIFT CHARAC- TER PITCH CHARAC- TER PITCH+ SHIFT FF/LOAD +TEAR N/A : Not applicable. Move the print head to Re- verse. Parks continuous-form pa- per. Move the print head to Forward. Activates/deactivates QUIET mode. Sets Top of Form. Selects next Print Quality[...]

ML720/721 Printer Handbook 31 SEL+LF QUIET+ PARK SEL+ FF/LOAD N/A : Not applicable. N/A N/A N/A Resets Menu to factory default. Resets Top of Form to factory default. Activates hex dump mode. Button Print Mode Help on Power Up N/A N/A N/A With CSF Installed N/A N/A N/A Menu Mode[...]

32 Operation 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 spac- ing, 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 [...]

ML720/721 Printer Handbook 33 Sample Menu The menu is made up of gr oups of parameters. W ithin 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 thir d, settings:[...]

34 Operation Summary of Menu Settings The table below details the entries in the printer Menu as it comes fr om the factory . The defaults ar e 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[...]

ML720/721 Printer Handbook 35 Bottom Feed Top Feed Set-Up 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" 6 LPI , 8 LPI Valid , Invalid 13.6", 8" 11", 11 2 / 3 " ,[...]

36 Operation Parallel I/F Buffer Print , Buffer Clear, Invalid +5V , Open Invalid , Valid Enable , Disable I-Prime Pin 18 Auto Feed XT * 3 Bi-Direction Group Item Setting * 3 EPSON mode Only[...]

ML720/721 Printer Handbook 37 Menu Mode Indicator Lights In the Menu Mode, the following lights indicate your printer ’s status: 1. POWER light: Glows when printer is on. 2. MENU light: Glows when printer is in Menu Mode. Menu Mode Buttons 12 1234[...]

38 Operation Her e is a summary of the buttons active in the Menu Mode: 1. GROUP button: Pr ess to scan thr ough groups of listings. Each time you press the GROUP button, a line will print, showing the next gr oup in the Menu. T o go back one group, hold the SHIFT button while pr essing the GROUP button. 2. ITEM button: Press to scan thr ough items[...]

ML720/721 Printer Handbook 39 Performing Basic T asks Selecting Print Quality Y our 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 r ough drafts or internal correspondence. NLQ printin[...]

40 Operation Selecting Character Pitch The character pitch determines the width of the individual characters and is mea- sured in characters per i nch (cpi). T o select the character pitch, press the CHARAC- TER PITCH button successively until the light underneath the pitch you wish to en- gage is lit. In the Epson and IBM emulations, the choices a[...]

ML720/721 Printer Handbook 41 The table below summarizes the fonts available from your printer: T esting Y our printer Y our printer has three your can run: the Font T est, the Rolling ASCII T est, and the Hexadecimal Dump T est. NLQ Courier NLQ Letter Gothic Utility (Gothic) High Speed Draft (Gothic) Bar Code Super Speed Draft (Gothic) 10 cpi, 12 [...]

42 Operation Font T est The Font T est pr ovides a printout c ontaining samples of available typefaces. Here’s a portion of a Font T est printout:[...]

ML720/721 Printer Handbook 43 T o run the Font T est: 1. Be sure paper is loaded. 2. T urn 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 T est The Rolling ASCII T est produces a continuous printout of a[...]

44 Operation T o activate the Rolling ASCII T est: 1. Be sur e paper is loaded. Caution! For wide carriage Model 721, be sure you have wide paper loaded! 2. T urn off printer . 3. Hold QUIET button for several seconds while turning printer on. (If printer sim- ply turns on without starting to print, you didn’t hold down QUIET button long enough.)[...]

ML720/721 Printer Handbook 45 T o engage the Hexadecimal Dump Mode: 1. Be sure paper is loaded. 2. T urn 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 r eceive data in the Hexadecimal Dump Mode. T o run the test, simply send data to [...]

46 Operation Y ou will find a list of the bar code printer commands for each emulation in appendix C. Her e 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 fiv[...]

ML720/721 Printer Handbook 47 EAN 8 EAN (Eur opean 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 thir- teenth digit combined with the twelfth digit pr ovides a code representing a country . Code 39 Also known as 3 of 9 Code, [...]

48 Operation Code 128 Code 128 has 106 dif ferent characters, each of which can have any one of three differ- ent 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 ar e also available for use within the bar code to indicate a change in the code set engaged[...]

ML720/721 Printer Handbook 49 C hapter 4: W orking with Software This chapter covers the fundamentals of setting up commercial software packages for use with your printer . Be sure to r ead your software documentation carefully for more details. Basic T erminology Before we start, let’s examine a few terms with which you may not be familiar . Pri[...]

50 W orking with Software Emulations In order to eliminate hundreds of differ ent 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 . Y our printer has three emulations: • IBM Proprinter III (factory [...]

ML720/721 Printer Handbook 51 Oki ML 520/1 IBM IBM Proprinter III IBM Proprinter II IBM Proprinter Oki ML 520/1 Epson Epson FX 850/1050 Epson FX 86/286 Epson FX Epson EX800/1000 Oki Microline 520/521 Oki Microline 320/321 Oki Microline 292/293 Oki Microline 192/193 Oki Microline 182/183 IBM Proprinter Emulation Epson FX Emulation OKI ML Emulation B[...]

52 W orking with Software[...]

ML720/721 Printer Handbook 53 C hapter 5: Problem Solving, Maintenance, & Service This chapter provides solutions to some common printer problems and explains the r outine maintenance procedures that will help keep your printer in tip-top operating condition. It also tells you how to or der parts, consumables and accessories, and pro- vides inf[...]

54 Ploblem Solving, Maintenance, & Service …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 . T o check the emulation selected, first make sure paper is loaded, then press the SEL and SHIFT buttons simultaneous[...]

ML720/721 Printer Handbook 55 … the Alarm light is on and the Character Pitch 15 light is flashing? This indicates a paper loading error . T o stop the flashing light, press the SEL button. Before trying to load paper in again, check to be sur e that you have the paper lever in the corr ect position (BOT , TOP , REAR) for the path you’r e using[...]

56 Ploblem Solving, Maintenance, & Service The I-Prime signal is sent over the parallel interface (pin 31) and will automatically override any settings you have made using the fr ont panel buttons. T o eliminate this pr oblem, enter the program MENU (hold SHIFT button while pr essing SEL/MENU button) and change the I-Prime item (in the Parallel[...]

ML720/721 Printer Handbook 57 3. Slide ribbon cartridge along until it is centered on platen, being careful not to touch printhead. Center printhead Swing front end up to remov e 4 . Swing fr ont-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 plast[...]

58 Ploblem Solving, Maintenance, & Service 7 . Lower front end of cartridge over printhead until it snaps into place. T urn knob in dir ection of arrow (clock-wise) to take up any slack in ribbon. M 1 2 3 Knob[...]

ML720/721 Printer Handbook 59 Clearing Paper Jams Caution! Always turn the printer off befor e you turn the platen knob! Rear Feed Jams T o clear a rear-feed paper jam: 1. T urn off printer 2. T urn 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[...]

60 Ploblem Solving, Maintenance, & Service 4. Open tractor covers and r emove 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, continuous- feed paper over three times to produce [...]

ML720/721 Printer Handbook 61 10. Replace pull-up roller assembly . Note: When installing a pull-up roller assem- bly , Shift the paper lever in agreement with the “Rear” mark before the installation. 1 1. Reload regular paper (open tractor cov- ers, place paper on pins, close tractor covers). 12. Swing access cover and paper separa- tor back i[...]

62 Ploblem Solving, Maintenance, & Service Single Sheet Feed Jams T o remove jammed single sheets of paper (top feed): 1. T urn printer OFF . 2. Rotate platen knob to back paper out of carriage. 3. If necessary , open access cover and lift off pull-up roller assembly to provide access to remove any ripped pieces from ar ound carriage. Button Fe[...]

ML720/721 Printer Handbook 63 Cleaning the Housing Y ou should clean the printer every six months (or after about 300 hours of operation). T o do this: 1. T urn printer OFF and remove paper from path. 2. Open access cover and remove pull-up roller assembly . 3. Use clean, dry cloth to dust area ar ound carriage shaft and platen. Be sure to r e- mov[...]

64 Ploblem Solving, Maintenance, & Service Accessories Y ou can add even mor e 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 continu- ous single-sheet paper feed. The bin will hold up to 100 sheets of standard, 20-lb paper . W ith cable for [...]

ML720/721 Printer Handbook 65 Pull T ractor , T op-Mount Used for bottom-feed of labels or heavy card stock, or in conjunction with the rear- feed tractor to provide more precise pa- per 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 roll- [...]

66 Ploblem Solving, Maintenance, & Service Replacement P arts 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[...]

ML720/721 Printer Handbook 67 A ppendix A: Specifications Print Method Impact dot matrix Printhead 9 pins, 0.30 mm diameter with thermal protection Print Speed Mode Characters per Second (CPS) High Speed Draft (HSD) 507 cps at 10 cpi Utility 380 cps at 10 cpi Near Letter Quality (NLQ) 95 cps at 10 cpi Super Speed Draft (SSD) 570 cps at 12 cpi Chara[...]

68 Appendix A: Specifications Resident Font Near Letter Quality Courier , Gothic Utility Gothic High Speed Draft Gothic Super Speed Draft Gothic Bar Code: Code 39, UPC A, UPC E, EAN 8, EAN 13, Inter- leaved 2 of 5, Code 128, Postnet Receive Buffer Size MAX 128K Reliability Mean T ime Between 20,000 hours at 25% duty cycle and 35% Failures (MTBR) Pa[...]

ML720/721 Printer Handbook 69 Cut sheets Single-part continuous forms Carbonless, multipart contin- uous form (orig. + 4 copies) Interleaf, multipart continu- ous form (orig. + 4 copies) Labels Envelopes, single feed Envelopes, continuous feed, non-overlap type Card stock Transparencies ML720: 7.2" to 8.5" ML721: 7.2" to 14.3" M[...]

70 Appendix A: Specifications Dimensions (W x D x H) ML 720: 15.7 x 13.6 x 6 inch (398 x 345 x 153 mm) ML 721: 21.7 x 13.6 x 6 inch (552 x 345 x 153 mm) W eight ML 720: 16.4 lb (7.5Kg) ML 721: 20.8 lb (9.5Kg) Environmental Requirements Operating T emperature: 41 to 95˚F (5 to 35˚C) Storage T emperature: 14 to 122˚F (-10 to +50˚C) Operating Humi[...]

ML720/721 Printer Handbook 71 The menu selections for your printer ar e summarized below . Factory defaults are in- dicated 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 depen[...]

72 Appendix B: Menu Selections Bottom Feed Top Feed Set-Up 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" 6 LPI , 8 LPI Off , 500ms, 1 sec, 2 sec Valid , Invalid 13.6", 8" [...]

ML720/721 Printer Handbook 73 Parallel I/F Serial I/F * 5 CSF Bin 1 * 4 CSF Bin 2 * 4 Buffer Print , Buffer Clear, Invalid +5V , Open Invalid , Valid Enable , Disable 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 Po[...]

74 Appendix B: Menu Selections 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 be- low . Y ou will find the items Line Spacing, Form T ear-Of f, Skip Over Perforation and Page Length appearing several times in [...]

ML720/721 Printer Handbook 75 Bottom Margin. V alid (factory default) or Invalid. Sets whether or not the printer will ignor e the bottom margin setting. Change the setting to Invalid if you want printer to ignor e the bottom margin setting. Be careful if you use this featur e: it lets the printer continue printing when there’s no more paper , wh[...]

76 Appendix B: Menu Selections DSR Signal. Applies only when optional Interface is installed. V alid (factory default) or In- valid. 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. Chang[...]

ML720/721 Printer Handbook 77 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[...]

78 Appendix B: Menu Selections 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 T ime option elapses while the printer is idle. The SEL LED flashes and other LED turn of f when the printer enters[...]

ML720/721 Printer Handbook 79 Serial Data 7/8 Bits. Appears only if optional Serial Interface is installed. 8 Bits (fac- tory 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 w[...]

80 Appendix B: Menu Selections[...]

ML720/721 Printer Handbook 81 A ppendix C: Printer Commands 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 I[...]

82 Appendix C: Priner Commands 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[...]

ML720/721 Printer Handbook 83 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 * Set Relati[...]

84 Appendix C: Priner Commands * OKI-Unique command 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 ESC A n Command Vertical Tab Set Vertical Tab Reset Vertical Tab to Defaults Miscellaneous Cancel Change Emulation [...]

ML720/721 Printer Handbook 85 Epson FX Printer Commands 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 [...]

86 Appendix C: Priner Commands 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 Emphasi[...]

ML720/721 Printer Handbook 87 Graphics (cont.) Graphics Select/Print Reassign Graphics Select 9-pin Graphics Printing Horizontal Control Backspace Carriage Return Margin Setting, Left Margin Setting, Right Horizontal Tab Set Horizontal Tab Clear Horizontal Tab Settings Set Print Position Set Absolute Dot Position Set Relative Dot Position Uni-direc[...]

88 Appendix C: Priner Commands 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[...]

ML720/721 Printer Handbook 89 OKI Micr oline (ML) Printer Commands Bar Code Commands Select Bar Code Type and Size Print Bar Code Data Print Postnet Bar Code 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/Spa[...]

90 Appendix C: Priner Commands 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 Ch[...]

ML720/721 Printer Handbook 91 Graphics (cont.) Graphics Mode Selection Graphics Print Mode 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 Colu[...]

92 Appendix C: Priner Commands 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 [...]

ML720/721 Printer Handbook 93 Lower ASCII Character Sets Lower ASCII Character Sets (1/4) A ppendix D: ASCII Character Codes[...]

94 Appendix D: ASCII Character Codes Lower ASCII Character Sets (2/4)[...]

ML720/721 Printer Handbook 95 Lower ASCII Character Sets (3/4)[...]

96 Appendix D: ASCII Character Codes Lower ASCII Character Sets (4/4)[...]

ML720/721 Printer Handbook 97 Upper ASCII Character Sets Upper ASCII Character Sets (1/4)[...]

98 Appendix D: ASCII Character Codes Upper ASCII Character Sets (2/4)[...]

ML720/721 Printer Handbook 99 Upper ASCII Character Sets (3/4)[...]

100 Appendix D: ASCII Character Codes Upper ASCII Character Sets (4/4)[...]

ML720/721 Printer Handbook 101 Epson International Character Substitutions[...]

102 Appendix D: ASCII Character Codes IBM International Character Substitutions[...]

ML720/721 Printer Handbook 103 MICROLINE International Character Substitutions[...]

104 Appendix D: ASCII Character Codes Code Page Character Sets Code Page Character Sets (1/3)[...]

ML720/721 Printer Handbook 105 Code Page Character Sets (2/3)[...]

106 Appendix D: ASCII Character Codes Code Page Character Sets (3/3)[...]

ML720/721 Printer Handbook 107 A ppendix E: Interfacing * 1.2 mA maximum 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19-30 31 32 33 34- 35 36 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 Signal Ground Frame Ground From Printer Groun[...]

108 Appendix E: Interfacing 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 opera- tion Note: Cable is not[...]

ML720/721 Printer Handbook 109 Installing the Serial Interface Caution! Handle the interface boar d with care to avoid damaging its components. The components can also be damaged by static discharges. W e recommend that you leave the board in its pr otective packaging until you’ve read these instructions and are ready to install it. Make sure the[...]

110 Appendix E: Interfacing 3. By inserting board to the far end, it is locked by the lock piece inside. Board Lock piece 4. Connect suitable interface cable (must be purchased separately) to printer con- nector and to serial port of your com- puter . Be sure to tighten screws on both ends of cable to keep it in place. Important! Make sure that you[...]

ML720/721 Printer Handbook 111 1 2 3 4 5 6 7 8-10 11 12-19 20 21-25 From Printer To Printer From Printer To Printer From Printer From Printer 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 Pin Signal Direction PG TD RD RTS DS[...]

Oki Data Corporation 4-1 1-22 Shibaura, T el : (81) 3 5445 6158 Minato-ku, T okyo, Fax : (81) 3 5445 6189 108-8551, Japan www .okidata.co.jp Oki Data (Singapore) 78 Shenton W ay , #09-01, T el : (65) 6221 3722 Pte Ltd. Singapore 079120 Fax : (65) 6421 1688 www .okidata.com.sg Oki Systems (Thailand) 956 Udomvidhya Building, T e l : (662) 636 2535 Lt[...]

Oki Data Corporation 4-11-22, Shibaura, Minato-ku T okyo 108-8551 Japan T el: (81) 3 5445 6158 F ax: (81) 3 5445 6189 42113904EE[...]