Oki ML420n Guide: User's, ML420/421 (English)

Oki ML420n Manual

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  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 1
    User's Guide 59348301
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 2
    ML 420/421 User's Guide P/N 59348301, Revision 1.2 February, 2006 Every effort has been made to ensure that the information in this document is complete, accurate, and up-to-date. Oki Data assumes no responsibility for the results of errors beyond its control. Oki Data also cannot guarantee that
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 3
    Safety Your Oki printer has been carefully designed to give you years of safe, reliable performance. As with all electrical equipment, there are a few basic precautions you should take to avoid hurting yourself or damaging the printer: • Carefully read all setup and operating instructions. Be sure
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 4
    in "Service and Support" for having your printer serviced. These are 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. 4 Microline 420/421 User's Guide
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    16 Resetting Top of Form to the Factory Default 16 Forms Tear-Off Feature 17 Potential Problems with Software Packages 17 Changing the Forms Tear-Off Setting 18 Manual Forms Tear Off 18 Paper Park 18 Changing Paper Paths 19 Printhead Gap 21 Print Quality 22 Character Pitch 23 Printer Reset
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    Menu Mode 26 Resetting the Menu to the Factory Defaults 26 Printing the Menu Settings 26 Changing the Menu Settings 27 Menu Settings Table 28 Explanations of Menu Items 35 Chapter 5: Maintenance 42 Replacing the Ribbon Cartridge 42 Loading Paper 44 Rear Feed 44 Top Feed (Single Sheets 53
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    meet the needs of harsh and demanding environments. Oki Data on the Internet The Oki Data Web Sites provide the most current information available on your printer. On-line documents are available for viewing and downloading via Oki Data's Web Sites. You may reach Oki Data via the Internet at: • www
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    printer receives more data. Then, the paper moves back down for printing. Note: This feature is normally turned off. Important! Forms Tear-Off and the Top of Form settings interact. For more information, see "Top of Form (TOF) and Forms TearOff" in Chapter 3. Saving Time Internet Support Oki Data
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    1" from the top. The Top of Form can be changed in increments of 1/180", either for a single print job or set to a new default. The overall amount of adjustment is limited to avoid paper jams. The first line prints at the red line of the plastic paper shield (1) on the printhead. Turning the Platen
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    Chapter 3: Using Your Printer Parts Identification: Rear Feed (Continuous Forms) Note: The serial number of your printer is on a label on the back, beside "S/N." Sheet Guide Paper Lever On-Off Switch Platen Knob Control Panel Acoustic Cover Access Cover Note: For rear feed, the paper lever must be
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    Parts Identification: Top Feed (Single Sheets) Paper Guides Sheet Guide Paper Lever On-Off Switch Platen Knob Control Panel Acoustic Cover (open) Note: For single-sheet printing, the paper lever must be in the middle position. Using Your Printer 11
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    to adjust the TOF to meet your software's requirements. The Top of Form and Forms Tear-Off settings of your printer interact. How you set the Top of Form depends on whether Forms Tear-Off is On (set to 500 ms, 1 sec, or 2 sec) or OFF (the factory default setting). 12 Microline 420/421 User's Guide
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    SEL (1) to enter the Menu Mode. 3 Press PARK (4) to print the menu. 4 Look for the Form Tear-Off setting in the paper feed group you are using (Rear Feed, Bottom Feed or Top Feed-Forms Tear-Off appears in the Top Feed group only if the optional Roll Paper Stand is installed). Using Your Printer 13
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    new setting. The printhead moves back to the left margin. 4 Press SEL/MENU (1) to save the setting and place the printer back on line. Note: To reset the Top of Form to the factory default, see "Resetting Top of Form to the Factory Default" later in this chapter. 14 Microline 420/421 User's Guide
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    you want it, press and hold SHIFT (2), then press QUIET/TOF (7) to engage the new setting. The printhead moves back to the left margin. 8 Press SEL/MENU (1) to save the setting and place the printer back on line. Note: To reset the Top of Form to the factory default, see the next page. Using Your
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    Form (where the printing should begin) is 1" down from the top of the page. To reset the Top of Form to the factory default: 1 Remove paper from the paper path. 2 Turn the printer off. 3 Press and hold PARK + QUIET/TOF while turning on the printer. 4 Reload paper. 16 Microline 420/421 User's Guide
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    pull tractor is engaged. Potential Problems with Software Packages If Forms Tear-Off is set to On and the software package you are using "pauses" for a long enough interval while sending data to the printer, Forms Tear-Off may be activated. No data is lost, but this causes uneven print registration
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    the Forms Tear-Off Setting Note: The default setting for Forms Tear-Off is OFF. To change the Forms Tear-Off setting: 1 Press SHIFT (2) + SEL (1). 2 Press GROUP (3) repeatedly until the Rear Feed or Bottom Feed group shows in the first column of the printed line, depending on which paper feed you
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 19
    Changing Paper Paths Continuous Forms to Single Sheets 1 Tear off any printed pages, then press PARK. 2 Raise the sheet guide (1) to the single-sheet feed position. 4 Move the paper lever (1) to the middle position marked "TOP." 5 Adjust the paper guides (1) for the size paper you are using, then
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    . 2 Lower the sheet guide into the continuous-forms position. 4 Move the paper lever to the appropriate position. • Rear feed: • Bottom feed: 3 Swing the wire feed guide over onto the pull-up roller. 5 If necessary, load continuous-form paper. 6 Press FF/LOAD. 20 Microline 420/421 User's Guide
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    Setting 1 2 3 4 5 Media Regular paper 2-part form (with carbon) 3-part form (with carbon) 4-part form (with carbon) Envelopes or extra thick paper Note: When the head gap is set to 2, 3, 4 or 5, the printer automatically slows down for better print quality with multipart forms. Using Your Printer
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    Important! Front panel settings for print quality and character pitch are normally overridden by software commands. Press PRINT QUALITY (1) to select: UTL: Utility-the default • Medium quality, medium • Highest quality, slowest speed (95 cps) • Courier or Gothic 22 Microline 420/421 User's Guide
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    provides a more polished, typeset appearance. Note: To reset the printer to the factory default character pitch, deselect the printer, then press and hold the SHIFT key while pressing the CHARACTER PITCH key. Epson and IBM Emulations Set the character pitch by pressing CHARACTER PITCH (1) until
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    "Resetting the Menu to the Factory Defaults" later in this chapter. Emulations • IBM® Proprinter III - factory setting • Epson® FX • Oki® MICROLINE® Changing Emulations 1 Make sure paper is loaded. 2 Press and hold SHIFT (2), then press SEL (1). 3 Press LF (3). The following line prints: Printer
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    Chapter 4: Menu Mode Note: Please print the current Menu Mode settings before you reset or change them. This is the only way to have a record of the settings. In Menu Mode, you use the front panel keys to change the defaults for the printer parameters. The changes you make in the Menu Mode are
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    before you reset or change them. This is the only way to have a record of the settings. To reset the Menu to the standard settings (factory defaults): 1 Turn the printer off. 2 Press SEL + LF while turning the printer on. Printing the Menu Settings Printing the Current Menu Settings 1 Make sure
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 27
    the Menu Settings Note: Please print the current Menu Mode settings before you reset or change them. This is the only way to have a record of the settings. 1 Press and hold SHIFT, then press SEL to enter the Menu Mode. 2 Use the GROUP, ITEM and SET keys to make your changes: a Press GROUP until
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 28
    as noted. Group Printer Control Font Item Emulation Mode Print Mode Symbol Sets DRAFT Mode Pitch Proportional Spacing Style Size Character Set Language Set Zero Character Code Page 28 Microline 420/421User's Guide Settings (Defaults are set in bold italic) IBM PPR, Epson FX, ML LQ Courier, LQ
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    Table (Continued) Group Rear Feed Bottom Feed Item Line Spacing Form Tear-Off Skip Over Perforation Page Width (wide model) Page Length Line Spacing Form Tear-Off Skip Over Perforation Page Width (wide model) Page Length Settings (Defaults are set in bold italic) 6 LPI, 8 LPI Off, 500 ms, 1 sec
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    Table (Continued) Group Top Feed Set-Up Item Line Spacing Form Tear-Off* Bottom Margin Page Width (wide model) Page Length Wait Time Page Length Control Graphics 7 or 8 Bit Graphics† Receive Buffer Size Paper Out Override Settings (Defaults are set in bold italic) 6 LPI, 8 LPI Off, 500 ms
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    Group Setup (cont..) Item Print Registration 1 Print Registration 2 7 or 8 Bits Data Word* Operator Panel Function Reset Inhibit Print Suppress Effective Auto LF Auto CR† CSF Bin Select** Print DEL Code* Settings (Defaults are set in bold italic) 0, range to 0.25 mmm to the right or left, set in
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    Parallel I/F Item SI Select Pitch (10 cpi)* SI Select Pitch (12 cpi)* Time Out Print Auto Select Centering Position CSF Type† Power Saving Power Save Time I-Prime Pin 18 Auto Feed XT** Bi-Direction Settings (Defaults are set in bold italic) 15 cpi, 17.1 cpi 12 cpi, 20 cpi Valid, Invalid No, Yes
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    Table (Continued) Group Serial IF* Item Parity Serial Data 7/8 Bits Protocol Diagnostic Test Busy Line Baud Rate DSR Signal DTR Signal Busy Time Settings (Defaults are set in bold italic) None, Odd, Even 8 Bits, 7 Bits Ready/Busy, X/On / X/Off No, Yes SSD-, SSD+, DTR, RTS 19200 bps, 9600 bps
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    (Defaults are set in bold italic) 6 LPI, 8 LPI Valid, Invalid 8", 13.6" 11", 11-2/3", 12", 14", 17", 5", 3.5", 4", 5.5", 6", 7", 8", 8.5" 6 LPI, 8 LPI Valid, Invalid 11", 11-2/3", 12", 14", 17", 5", 3.5", 4", 5.5", 6", 7", 8", 8.5" * Appears only when the optional Cut Sheet Feeder is installed
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    paper. With the factory default engaged, the printer will be deselected so that you can set the Top of Form. If you always use the same Top of Form position, change the setting to Yes. Baud Rate, Default = 9600 bps Appears only if optional Serial Interface is installed. Set this to match your system
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    Bottom Margin, Default = Valid Change to Invalid if you want the printer to ignore the bottom margin setting. CAUTION!! Setting the Bottom Margin to Invalid can cause loss of data and damage the printhead by allowing printing without paper. Busy Line, Default = SSD- Appears only when the optional
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    1 sec, or 2 sec to turn the Form Tear-Off feature on and to set the time interval for the printer to wait before advancing the paper. Graphics, Default = Bi-directional Change to uni-directional graphics for better registration, but slower printing. With this set for bi-directional, you can optimize
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 38
    position (TOF) on each page. Page Length Control, Default = by Actual Page Length If you are printing single sheets no longer than 17 inches and wish the printer to acknowledge the menu setting for Top Feed Page Length, change the setting to "by Menu Setting." 38 Microline 420/421User's Guide
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    rear and bottom paths, the default is 13.6". Change to 8" if you will be printing on narrow paper. This prevents printing on the platen which can damage the printhead and the platen, and can cause loss of data. For the top feed path the default is 8". Change to 13.6" to print on wide paper. Paper
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    data. Choosing 1 Line will tie up your computer while printing, but if you abort the print job, the printer will stop much sooner. Reset Inhibit, Default = No Select Yes if you wish the printer to ignore the reset command sent by software. This prevents your software from changing the settings
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    to italics if you want the printed characters to be slanted. Time Out Print, Default = Valid If your software spends a long time processing between portions of data it feeds to the printer, change the setting to Invalid to keep your printer from dumping the received data while it is waiting for more
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    the your printer. The wrong ribbon will not print when installed in your printer. Look for the printer model number on the ribbon package. Ribbon Cartridge Handling • Leave unused ribbon cartridges in their packages until needed. • Careful; the ribbon ink may cause permanent stains. • Ribbon ink on
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    the printhead, lift it out, and discard it. 5 Turn the take-up knob (1) in the direction of the arrow to take up any ribbon slack. 4 Unpack the new ribbon cartridge and install it. Important! Do not remove the ribbon shield (1) from the ribbon! 6 Close the access cover and turn the printer back
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    Note: These instructions assume you have ready access to the back of the printer. If you do not, skip down to "Loading Rear Feed Paper from the Front of the Printer." 1 Make sure the paper lever is forward (position marked "REAR"). 2 Open the access cover (1). 44 Microline 420/421 User's Guide
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    . Lift it slightly, then slide it back. 4 Pivot the sheet guide forward and gently rest it against the roller assembly. Careful! If you push the sheet guide too hard against the roller assembly, it may dislodge it. If it does, be sure to reseat the roller assembly before continuing. Maintenance
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    printer) to the reference mark (2) matching the width of the paper you are loading. Then close the lock lever on the right tractor: ML421 ML420 Note: The movement of the right tractor is limited to ensure that the paper covers the paper sensor. 7 Open the tractor covers. 46 Microline 420/421 User
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    8 Place continuous forms paper on the first two pins of either tractor. Important! You must keep the number of paper holes engaged on either pin the same. If you don't the paper will skew and jam. 10 Adjust the left tractor until the holes in the paper are centered on the pins then lock
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    above) in the sheet guide on the pull-up roller assembly. 13 Press FF/LOAD. Note: The factory default setting for the Top of Form (where the printing should begin) is 1" down from the top of the page. To change the setting, see "Top of Form (TOF)" in Chapter 3. 48 Microline 420/421 User's Guide
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    : These instructions assume you do not have ready access to the back of the printer. If you do, go back to "Loading Rear Feed Paper from the Rear of the Printer" earlier in this chapter. Lock Lever Upper Tractor Cover Pins 2 Open the access cover (1). 3 Grasp the tabs and lift off the sheet guide
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    will find reference marks (1 in illustration below) on the printer for the two most common paper sizes: ML420: ML421: 7 Open the tractor covers and place continuous forms paper on the first two pins of either tractor, then close the left tractor cover. Important! You must keep the number of paper
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    8 Adjust the position of the right tractor to center the holes in the paper on the pins. Then, close its tractor cover and push back the lock lever. Do not stretch the paper. Note: If the paper is too loose or too tight it can cause jams. 9 Reinstall the sheet guide. Maintenance 51
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    guide (1) in the sheet guide on the pull-up roller assembly. 11 Press FF/LOAD. Note: The factory default setting for the Top of Form (where the printing should begin) is 1" down from the top of the page. To change the setting, see "Top of Form (TOF)" in Chapter 3. 52 Microline 420/421 User's Guide
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    remove it before loading single sheets. 1 Make sure the printer is on and deselected (SEL light off). 2 Place the paper lever in the center position (marked "TOP"). 3 Open the acoustic cover (1) and raise the sheet guide to the single-sheet position. Pivot the wire feed guide (2) up into the sheet
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    SHIFT key and press the CHARACTER PITCH/RESET key. Reload the sheet of paper. Note: The factory default setting for the Top of Form (where the printing should begin) is 1" down from the top of the page. To change the setting, see "Top of Form (TOF)" in Chapter 3. 54 Microline 420/421 User's Guide
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    pull-up roller assembly (2). Remove any torn pieces of paper. 5 Lift the sheet guide (1) and reload paper. Make sure you lock the tractor covers. 5 Lower the sheet guide, then install the pull-up roller assembly and close the access cover. 6 Turn on the printer and press FF/LOAD. Maintenance 55
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    paper all the way out of the printer. CAUTION! Make sure the printer is turned off before you open the access cover. 3 Open the access cover (1) and remove the pull up roller assembly (2). Then grasp the tabs (3) on the sheet guide (4) and lift it off the printer. 56 Microline 420/421 User's Guide
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    paper over three times to make a page four sheets thick. Then, load it on the tractors and close and lock the covers. 8 Load regular paper, close and lock the tractor covers. 9 Install the sheet guide, then install the pull-up roller assembly and close the access cover. 6 Use the platen knob to
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    Single-Sheet Paper Jams 1 Turn off the printer. 2 Use the platen knob to back the paper out. 3 Open the access cover (1) and remove the pull-up roller assembly (2). 58 Microline 420/421 User's Guide 4 Remove any torn pieces from around the carriage. 5 Reinstall the pull-up roller assembly and
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    use strong solvents or strong detergents on the cabinet-they could damage the housing. 1 Turn off the printer. 2 Use the platen knob to back the paper out of the printer. CAUTION! Make sure the printer is turned off before you open the access cover. 3 Open the access cover (1) and remove the pull
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    the ribbon properly installed? • Is an Oki ribbon being used? • Is the printhead gap correctly set? • Are the correct printer drivers being used for the printer? Note: Settings in your software application will normally override any settings in your printer driver. Printer driver settings normally
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    Solutions Problem My word processor files do not print the way I have the menu and front panel set. Solution Remember: • Settings in your software application can override settings in your printer driver. • Your printer driver settings can override any settings from the printer menu or printer front
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    interface board installed, check to be sure that it is firmly seated in the printer. Problem I'm getting strange symbols, incorrect fonts, etc., when I try to print a document. Solutions 1 Check to be sure that the printer driver you have selected in your software matches the printer emulation
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    the wide-carriage printer, if MODE 1 doesn't work, try setting the Centering Position to MODE 2. Problem I've installed a new ribbon and the printing is smeared and streaked. Solution The ribbon shield (1) is either loose or missing. Remove the ribbon cartridge and check the ribbon shield. • If it
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    There are dots missing in my printouts. Solution The head gap may not be set correctly. Try moving the headgap lever to a lower setting. If that doesn't help, the printhead may be damaged; call for service. Problem The ALARM light is flashing. Solution Try turning the printer off and then back
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    these buttons (Limited Function). 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. Check with your system manager before changing any menu settings. Troubleshooting 65
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    and part numbers are provided in this section. • Consult the dealer where your purchased your printer. • Locate an Authorized Oki Data Reseller by visiting one of our web sites http://my.okidata.com (allows you to register your product and personalize your own support needs) http://www.okidata.com
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    Replacement Parts Item Part Number Both Models Ribbon Cartridge 42377801 Platen Knob 51902220 Power Cord 56631801 Printhead 41923901 Model ML420 Access Cover 42115401 Sheet Guide 51009509 Pull-Up Roller Assembly 42044701 Model ML421 Access Cover 42115301 Sheet Guide 51009410 Pull-
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    Accessories Option Part Number Model ML420 Pull Tractor, Top-Mount 70030501 Push Tractor, Bottom-Mount 70030701 Roll Paper Stand 70023301 Model ML421 Pull Tractor, Top-Mount 70030601 Push Tractor, Bottom-Mount 70030801 Both Models Cut Sheet Feeder 70030101 Serial Interface 70012801
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    your printer model, then click Continue. 3 Click Documentation and follow the on-screen prompts to view the file. IBM Proprinter III Commands IBM Command Backspace Carriage Return Character Pitch Select 10 cpi Select 12 cpi Select 15 cpi Select Condensed Print Character Sets IBM Set I IBM Set II
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    127) Set Spacing to n/216" (n = 0 to 255) ASCII LF ESC % 5 n ESC J n ESC ] ESC 5 1 ESC 5 0 ESC 0 ESC 1 ESC A n ESC 2 ESC % 9 n ESC 3 n Decimal 10 27 37 53 n 27 74 n 27 93 27 53 49 27 53 48 27 48 27 49 27 65 n 27 50 27 37 57 n 27 51 n 70 Microline 420/421 User's Guide
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    P 0 Reset: Clear Print Buffer CAN Decimal 27 95 49 27 95 48 27 56 27 57 27 35 48 27 81 3 27 81 22 17 27 80 49 27 80 48 24 IBM Command ASCII Software I-Prime ESC } NUL Stop Printing ESC j Subscript On ESC S 1 Superscript On ESC S 0 Subscript/Superscript Off ESC T Top of Form, Set at
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    Printing Off Form Feed ASCII ESC w 1 ESC w 0 ESC W 1 ESC W 0 ESC E ESC F ESC G ESC H ESC t 0 ESC t 1 ESC 4 ESC 5 FF Decimal 27 119 49 27 119 48 27 87 49 27 87 48 27 69 27 70 27 71 27 72 27 116 48 27 116 49 27 52 27 53 12 72 Microline 420/421 User's Guide
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    Command Form Length n Inches (n = 1 to 22) n Lines (n = 1 to 127) Horizontal Tab Justification Left Center Right Full Line Feed, Execute n 27 80 27 77 10 27 74 n 27 37 53 n ESC j n 27 106 n Epson Command Line Spacing, Set n/144" (n = 0 to 127) n/216" (n = 0 to 255) n/72" (n = 0-85 or 128-213
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    115 48 19 17 27 112 49 27 112 48 74 Microline 420/421 User's Guide Epson Command ASCII Reset Printer Clear Buffer & Initialize ESC @ Clear Print Buffer CAN Skip Over Perforation, Cancel ESC O Software I-Prime ESC } NUL Subscript On ESC S 1 Superscript On ESC S 0 Subscript/Superscript
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    51 27 33 48 27 33 49 27 33 50 27 33 90 Oki Command Slashed Zero Unslashed Zero Double Height On Double Height Off Double Width Printing Emphasized Printing On Emphasized Printing Off Enhanced Printing On Enhanced Printing Off Form Feed Horizontal Tab, Execute Italic On Italic Off ASCII ESC ! @ ESC
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    Off Proportional Printing On Off Reset: Clear Print Buffer ASCII ESC E 1 ESC E 0 ESC # 0 ESC 1 ESC 3 ESC 0 ESC > ESC < DC3 DC1 ESC Y ESC Z CAN Decimal 27 69 49 27 69 48 27 35 48 27 49 27 51 27 48 27 62 27 60 19 17 27 89 27 90 24 76 Microline 420/421 User's Guide
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    MICROLINE Standard Commands (continued) Oki Command Shift-In Shift-Out Software I-Prime Subscript Printing On Subscript Printing Off Superscript Printing On Superscript Printing Off Underline Printing On Underline Printing Off Uni-Directional Print On Uni-Directional Print Off Vertical Tab, Execute
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    Note: Specifications are subject to change without notice. Print Method Impact dot matrix Printhead 9 pins, 0.30 mm (0.0118") diameter, with thermal protection Interfaces Standard: Centronics parallel, IEEE-1284 compliant USB 1.1 Optional: RS-232C Serial Ethernet Print Servers: 6120i 10/100 Base
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    III • Epson FX • Oki MICROLINE Standard Print Speed Mode Super Speed Draft (SSD) High Speed Draft (HSD) Utility Near Letter Quality (NLQ) Speed (Characters per Second) 570 cps 507 cps 380 cps 95 cps Characters per Line (cpl) Setting 10 cpi 12 cpi 15 cpi 17.1 cpi 20 cpi ML420 80 cpl 96 cpl
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    , Gothic Gothic Gothic Gothic Bar Codes • Code 39 • UPC A, UPC E • EAN 8, EAN 13 • Interleaved 2 of 5 • Code 128 • Postnet Paper Thickness: Tractor Feed Rear Feed: 0.014" (0.36 mm) maximum Bottom Feed: 0.017" (0.44 mm) max. Requires optional push or pull tractor. 80 Microline 420/421 User's Guide
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    : ML420 Single (Cut) Sheets Feed: Top Only Weight: 14 to 24 lb. US Bond (52.6 to 90 g/m2) Width Range: 7.2" to 8.5" (183 to 216 mm) Single-part, continuous forms Feed: Rear, Bottom* Weight: 12 to 24 lb. US Bond (45 to 90 g/m2) Width Range: 3" to 10" (76 to 254 mm) Carbonless continuous forms
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 82
    , continuous feed, non-overlap Feed: Bottom* Only Weight: Max. 24 lb. Width Range: 6.5" to 9.5" (165.1 to 241.3 mm) Card stock Feed: Bottom* Only Weight: Max. 100 lb. Index (180 g/m2) Width Range: Not applicable * Bottom feed requires optional pull or push tractor 82 Microline 420/421 User's Guide
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 83
    ac, (+15%, -14 %) 50 or 60 Hz (±2%) 58 W Typical, 10 W idle Physical Specifications Note: Height dimensions do not include the acoustic cover. ML420 Size (WxDxH): 17.1" x 16.1" x 6" (434 x 409 x 153 mm) Weight: 16.7 lbs. (7.6 kg) ML421 Size (WxDxH): 23.1" x 16.1" x 6" (588 x 409 x 153 mm) Weight
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 84
    Installation Location • Place your printer on a firm, solid surface. • Allow enough space around the printer to easily access the platen knob and the various paper feed paths to ship or transport the printer. • Interface cable and paper are sold separately. Printer Ribbon Cartridge Power Cord 84
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 85
    1 Remove any packing tape, then grasp the tabs (1) at either end of the access cover and pivot it toward the front of the printer as far as it will go. 3 Remove the shipping restraint from the pull-up roller assembly (1). 2 Remove the printhead shipping restraint. Installation 85
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 86
    4 Use the tabs (1) to lift and remove the sheet guide, then remove the shipping restraint. 5 Reinstall the sheet guide: insert the clips on either side of the separator into the notches marked with a triangle, then press down to secure the separator in place. 86 Microline 420/421 User's Guide
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 87
    you have the correct replacement ribbon for your printer. The wrong ribbon will not print when installed in your printer. Ribbon Cartridge Handling • Leave unused ribbon cartridges in their packages until needed. • Careful; the ribbon ink may cause permanent stains. • Ribbon ink on skin or clothing
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 88
    1 Make sure the printer and computer are both turned off. 2 Attach a suitable bidirectional cable to the parallel connector on the back of the printer. Then attach and secure the cable to your computer. 3 Turn on the printer. 88 Microline 420/421 User's Guide 3 Turn the printer and computer back
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 89
    receptacle. 1 Make sure the printer and computer are both turned off. 2 Attach a suitable USB cable to the printer. Then attach the cable to your computer. Loading Paper For instructions on loading paper, see "Loading Paper" in Chapter 5. 3 Turn the computer and printer back on. Installation 89
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 90
    Sample Test prints a sample of the fonts standard to the printer. The top of the printout shows the Printer Model, Emulation printer menu is set to 8.5 inches. Otherwise, printing on the platen may damage the printer. See Chapter 4: Menu Mode for more information. 90 Microline 420/421 User's Guide
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 91
    is set to 8.5 inches. Otherwise, printing on the platen may damage the printer. See Chapter 4: Menu Mode for more information. The Rolling ASCII Print Test produces a continuous printout of all 96 ASCII characters in a rolling pattern in whatever typeface is selected (default = LQ Courier). The top
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 92
    : • Press the SEL key. or • Turn the printer off, then on again. The Oki driver for your printer is provided on the CD included with the printer. You can either load the Oki driver or select one of the compatible drivers listed below in your software application. 92 Microline 420/421 User's Guide
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 93
    on-screen instructions to install the software for your printer model. Using a Compatible Driver Note: See your software documentation for information on how to select a printer driver. The drivers below are listed by decreasing compatibility with your printer. Use one as close to the top of the
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 94
    forms .......... 81, 82 Card Stock 81, 82 Centering printhead position 63 Character Pitch 39 Selecting 23 Character Set 28, 36 Character Width 39 Characters Per Second (CPS 7 Code Page Character Set 36 Codes, Printer Control 69 Commands Epson FX 72-74 IBM Proprinter III 69-71 Oki
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 95
    29 Top Feed 30 M Margin, Bottom 30, 36 Mean Time Between Failures (MTBF) .. 78 Mean Time to Repair (MTTR 78 Memory, Receive Buffer Size 78 MENU light 25 Menu Mode 25 Changing Settings 27 Entering 26 Exiting 26 Front Panel keys 25 Printing the Menu Settings 26 Reset to factory defaults 26
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 96
    Server Option 68 Print Size 79 Print Speed 7, 79 Print Suppress 31, 40 Printer Control Codes 69-77 Printer Drivers, Selecting 92-93 Printer Parameters 25 Printhead 78 Gap 21 Proportional Spacing 28, 40 Pull Tractor 68 Push Tractor 68 R Rear Feed Continuous Forms 10 Form Tear-Off 29
  • Oki ML420n | Guide: User's, ML420/421 (English) - Page 97
    32, 41 Top Feed 81-84 Bottom Margin 30 Line Spacing 30 Pull Tractor 68 Single Sheet 11 Top of Form 35 Forms Tear-Off 8, 12, 17 Paper Shield 9, 12 Reset to factory default 16 Setting 12 Standard Setting 12, 16 Typefaces 28 Selecting 40 U Uni-directional printing, graphics .......... 30
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User’s
Guide
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