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.
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.
• 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.
Contents Introduction ............................................................................................................. 1 Chapter 1: Installation ........................................................................................... 3 Unpacking ................................................................................................................... 3 Removing Shipping Retainers ........................................................................ 4 Installing Ribbon Cartridge .
Performing Basic Tasks ............................................................................................ 39 Selecting Print Quality .................................................................................. 39 Selecting Character Pitch .............................................................................. 40 Testing Your printer ....................................................................................... 41 Resetting Top of Form .........................................
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 ......................................
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.
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.
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).
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.
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.
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.
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.
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.
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.
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.
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.
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.
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”.
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.
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.
Paper separator 10.Replace the paper separator, and insert until the paper separator and upper cover marks align.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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).
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.
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 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.
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.
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.
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.
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.
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 You
Font Test The Font Test provides a printout containing samples of available typefaces.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
…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.
… 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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
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.
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.
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 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.
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.
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.
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.
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.
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.
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.
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.
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 Function Character Size/Spacing (cont.
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
IBM Function Vertical Control (cont.
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 Prin
Epson Function Character Size/Spacing (cont.
Epson Function ASCII Code Graphics (cont.
Epson Function Vertical Control (cont.
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.
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 H
Microline Function ASCII Code Graphics (cont.
Microline Function Vertical Control (cont.
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.
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.
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:.
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.
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.
Oki Data Corporation 4-11-22, Shibaura, Minato-ku Tokyo 108-8551 Japan Tel: (81) 3 5445 6158 Fax: (81) 3 5445 6189 42113904EE
