HP DeskJet 420 Series Printer

Users Guide

English
Acknowledgments Microsoft is a U.S. registered trademark of Microsoft Corporation.
Windows is a trademark of Microsoft Corporation.

Table of Contents

1 Getting Started
Packing List. 1 Printer Features. 1 STEP 1: Connecting the Power Adapter. 2 STEP 2: Connecting the Parallel Cable. 2 STEP 3: Loading Paper. 3 STEP 4: Installing an Inkjet Print Cartridge. 34 STEP 5: Installing the Printer Software. 45 Finding the HP Printer Setup Box. 5
Notice The information contained in this document is subject to change without notice.
Hewlett-Packard makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Hewlett-Packard Company.
2 Getting the Most Out of Your Printer
Loading Other Size Paper. 6 Loading Envelopes, Labels, and Thick Paper. 6 Changing Inkjet Print Cartridges. 7 Using the Inkjet Print Cartridge Storage Container. 7 Printing in Color and Grayscale. 8
Print History Edition 1 October 1998
Copyright 1998 by Hewlett-Packard Company

3 Solving Problems

Problem-Solving Guidelines. 8 Frequently Asked Questions. 8 When the Printer Does Not Print. 9 When the Lights Blink. 10 When Paper Is Jammed in the Printer. 11 When Paper Is Not Loading. 12 When the Print Quality Is Not Satisfactory. 1213 When the Ink Nozzles Are Clogged. 13

4 Appendices

HP Customer Care. 14 HP Supplies. 16 Printer Specifications. 1718 Printing from DOS. 19 Regulatory Notices. 20 HP Limited Warranty Statement. 21

Getting Started

Packing List 1. HP DeskJet 420 series printer 2. Packing tape 3. Color inkjet print cartridge 4. Users guide 5. Power adapter 6. Printer software diskette 7. Print cartridge storage container

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Printer Features 1. Power button ( ) 2. Paper Feed button ( ) 3. Change Cartridge button ( ) 4. Paper size selector (A4/LTR) 5. Paper width guide 6. Paper separator 7. Paper tray 8. Print cartridge holder 9. Envelope lever ( / ) 10. Printer door 11. Power socket 12. Manual feed slot 13. Cable track 14. Parallel port

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STEP 1: Connecting the Power Adapter
1. Plug the power adapter connector firmly into the printers power socket. 2. Plug the other end of the power adapter cable into a grounded electrical outlet.
STEP 2: Connecting the Parallel Cable
1. You must purchase separately a parallel cable to connect your printer to your computer. Use any high-quality parallel printer cable, or order HP part no. C2950A or C2951A from your local HP dealer. 2. Make sure the printer and the computer are turned off. 3. Remove the parallel port cover from the printer. 4. Connect the printer end of the parallel cable firmly to the parallel port on the printer. (Refer to the users guide for your computer to find the parallel port on your computer.)

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6. Move the paper width guide so that it presses lightly against the paper stack.

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5. Insert the inkjet print cartridge into the holder at an angle such that the green top is tilted toward you. The arrow on the top of the inkjet print cartridge should be pointing toward the inside of the printer.
STEP 5: Installing the Printer Software

In a Windows Environment

To install the printer software, first refer to page 17, Hardware Compatibility for hardware requirements.
Note: The HP DeskJet 420 series printer is not supported in network configuration.
Before you can use your printer, you must install the printer software.

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6. Push the green top in until the inkjet print cartridge snaps into place.

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7. Close the printer door. 8. Press the Change Cartridge button ( ).
Note: If you did not install a recommended inkjet print cartridge, the print cartridge holder will move back to the loading position, and the Change Cartridge light will continue to blink. CAUTION: The ink in the inkjet print cartridge has been carefully formulated by Hewlett-Packard to ensure superior print quality and compatibility with your printer. Damage to the printer or the inkjet print cartridge resulting from modifying or refilling the inkjet print cartridge is not the responsibility of Hewlett-Packard.
1. Perform all procedures given earlier in this section. 2. Turn on the printer, then turn on the computer. 3. Close any screen saver or other software programs that are open and running in the background on your computer. To close software programs, follow these steps: For Windows 95 or 98 Right-click the software programs name or icon on the taskbar. Select Close. Repeat these steps for each open software program, except Windows Explorer. For Windows 3.1x While holding down the Alt key, press the Tab key to locate an open software program. When you locate an open software program, release both keys. In the File menu, select Exit. Repeat these steps for each open software program, except Program Manager.

Windows 95 or 98:

To install the Windows 95 or 98 printer software, use the following procedure:
1. Start Microsoft Windows 95 or 98. 2. Windows should recognize the attached printer as a newly added piece of hardware and walk you through the installation instructions. If a screen with instructions does not appear, do the following: 3. Click on the Start button. 4. Choose Settings in the Start menu. 5. Click Printers in the Settings menu. 6. Double-click Add Printer in the Printers window.
7. Follow the Wizard instructions that appear on the screen. 8. Choose Local Printer. 9. Click Have Disk. 10. Insert the HP DeskJet Printer Software disk 1 into the disk drive of your computer. 11. Select the disk drive and click OK. 12. Click on the appropriate HP DeskJet 400 Series language and click Next. 13. Select the port to which the printer is attached and click Next. 14. Finish answering the install Wizard questions.
Note: You must restart Windows to initialize the printing software. Until Windows is restarted, the printer will not perform as expected.

DOS Printing

Note: You do not need to install the DJPMenu software if you are printing from your Windows applications.
Use the DJPMenu software to define or change the settings on the DeskJet 420 series printer if your DOS applications do not allow you to do so.
Note: The DJPMenu software requires that your printer is connected directly to the parallel port of your computer. Refer to page 17, Hardware Compatibility for hardware requirements.

Windows 3.1x:

To install the Windows 3.1x printer software, use the following procedure:
1. Start Microsoft Windows and ensure no Windows applications are running. 2. Double-click to open the Main program group in the Program Manager window. 3. Double-click the Control Panel icon. 4. Double-click the Printers icon. 5. In the Printers dialog box, click Add. 6. Make sure that Install Unlisted or Updated Printer is selected in the List of Printers area in the Printers dialog box. 7. Click Install. 8. Insert the HP DeskJet Printer Software disk 1 into the disk drive of your computer. 9. In the Install Driver dialog box, type A:\ and click OK. 10. In the Add Unlisted or Updated Printer dialog box, click the appropriate HP DeskJet 400 Series language. 11. Click OK.
Note: You must restart Windows to initialize the printing software. Until Windows 3.1x is restarted, the printer will not perform as expected.
1. Insert disk 1 the HP DeskJet Printer Software disk into drive A. 2. At the DOS prompt (C:\>), type A:\INSTALL and press ENTER. 3. Follow the instructions on the screen. 4. To run the DJPMenu software, type C:\DESKJET\DJPMENU at the DOS prompt. 5. For more updated information on the DJPMenu software, please refer to the file C:\DESKJET\DJPMENU.TXT that you have just installed. Selecting a printer software for the HP DeskJet 420 series printer in each DOS software program that you use ensures the best support for your printer. If the printer software for the HP DeskJet 420 series printer is not available within your program, select the printer software for the HP DeskJet 500C printer.

See page 19 for more information about printing from DOS.
Finding the HP Printer Setup Box
You can control the printer through your software program and the printer software you installed on your computer. To find the HP Print Setup box: From your software program, try this: 1. In the File menu, select Print.
2. Click Properties. (Clicking Options at this point wont get you there.) 3. If you still dont see the box, click Setup or Options. Or try this: 1. If you dont see a Print option in the File menu, click Printer Setup or Print Setup. 2. Then click whichever button you see: Setup or Options.
Getting the Most Out of Your Printer

Loading Other Size Paper

Legal, Executive, and B5 size paper must be fed into the printer manually, one by one, from the back of the printer. See page 18, Printable Paper Sizes for the paper sizes that you can print.
Note: If you are loading letterheads or HP transparencies from the back of the printer, insert them print side up, with the top of the page going into the printer first.
Loading Envelopes, Labels, and Thick Paper
Envelopes, labels, and thick paper must be fed into the printer manually, one by one and print side up, from the back of the printer. See page 18, Printable Paper Sizes for the envelope sizes that you can print. 1. Ensure that you have selected Manual Feed in the Printer Setup dialog box. (See page 5, Finding the HP Printer Setup Box.) 2. Open the paper tray. 3. Open the printer door and switch the envelope lever ( / ) to Envelope ( ). Then close the printer door.
1. Ensure that you have selected Manual Feed in the Printer Setup dialog box. 2. Open the paper tray.

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3. Align the paper against the molded line on the manual feed slot (on the back of the printer). Insert the paper until the printer pulls the paper in.

LTR A4

4. Align the envelope, label, or thick paper against the respective molded lines on the manual feed slot. Insert the envelope, label, or thick paper until the printer pulls it in.

LTR A4 B5

Solving Problems

If you encounter a problem with your printer, you can seek help from the following sources:
Online Help If you see an error message on your screen, read the suggestions in the error message. Click the Help button in this window. Or you can also access online help in the following ways: Windows 95 and 98: 1. Click Start in the taskbar. 2. Select Programs, HP400 Series Utilities, and finally HP400 Series Help. Windows 3.1x: 1. Open the HP400 Series Utilities program group. 2. Double-click the HP400 Series Help icon.
Users Guide Read the following tips to solve the problem. HP Customer Care If the problem cannot be solved by the help suggestions in the Users Guide, refer to page 14, HP Customer Care for a listing of resources available to you.
Frequently Asked Questions
What is the difference between LTR and A4 paper?
LTR paper is commonly used in North America.
The size is 8.5 inches x 11 inches (216 mm x 279 mm).
A4 paper is commonly used in Europe, Australia,
New Zealand, Asia, and South America. The size is 210 mm x 297 mm.
How should paper be loaded into the printer?
First, switch the paper size lever on the left bottom corner to the correct paper setting, either LTR or A4. Then insert the paper into the paper tray until it can go no further. Finally, move the paper width guide, located on the tray, so that it presses lightly against the paper stack.
Is the sound the printer makes when it starts working normal?
Yes, when the printer functions properly, a sound occurs when you turn the printer on and also when it picks up paper.
What do I do if I get a paper jam?
To clear the paper jam: 1. Turn off the printer. 2. Remove the paper from the paper tray. 3. Remove the printer door by grasping it by its sides, then pulling the door toward you. 4. Carefully pull the paper out of the printer. See page 11, When Paper is Jammed in the Printer for step-by-step illustrations. To avoid paper jams, be sure to set the paper size lever to the correct setting and to move the paper width guide so that it presses lightly against the paper stack. Also, be sure to feed paper that is heavier or lighter than 16 to 24 lb from the back of the printer manually.
Which print cartridges can I use with the printer?
Use one of the following inkjet print cartridges: Tri-Color HP51625A (supplied with printer) Large Black HP51626A (optional) Black HP51626G (optional)

How do I print in color using Microsoft Windows software?
Use the HP color inkjet print cartridge (HP51625A) for color printing and the HP large black (HP51626A) or black (HP51626G) for black printing. If you print a color document in black, remember to check the Print in Grayscale setting in the Printer Setup menu. (See page 5, Finding the HP Printer Setup Box.)
When the Printer Does Not Print
The printer shows no response at all to the print command. s The printer is not properly connected to the power source. Make sure the printers power adapter is firmly plugged into the printer and into the wall power outlet. s The printer is off. Press the Power button ( ) until the Power LED lights up. s The printer is not properly connected to the computer. Make sure the interface cable is firmly connected to the parallel port of the printer and the computer. s You may be using a wrong parallel cable or the parallel cable may be defective. Use either of the following parallel cables: HP part no. C2950A or C2951A. s Your printer is not selected as the current or default printer. Select your printer using the Printer Setup menu in your software program. Alternatively, set your printer as the default from Printers in the Control Panel.
How can I get the best print quality?
To ensure the highest print quality from the HP DeskJet 420 series printer, use original HP inkjet print cartridges together with HPs Premium InkJet Paper or Bright White InkJet Paper. The HP printer software gives you optimal results when you select the Best printing setting in the Printer Setup menu. (See page 5, Finding the HP Printer Setup Box.)
How do I print envelopes, labels, or thick paper (heavier than 24 lb)?
You must feed envelopes, labels, and thick paper one sheet at a time from the back of the printer. Be sure that you have selected Manual Feed and the appropriate Paper Size in the Printer Setup menu. Then open the printer door and switch the envelope ). Close the printer door and lever to Envelope ( print one page.
The printer appears to be printing, but nothing prints on the paper. s The ink nozzles of the inkjet print cartridge are covered by a sealing tape. Remove the tape(s). See page 3, STEP 4: Installing an Inkjet Print Cartridge. s The ink nozzles of the inkjet print cartridge are clogged with dried ink. See page 13, When the Ink Nozzles Are Clogged. s The inkjet print cartridge is out of ink. Use a new inkjet print cartridge. The printed page looks incomplete or has oddlooking characters. s Your printer is not selected as the current or default printer. Select your printer using the Printer Setup menu in your software program. Alternatively, set your printer as the default from Printers in the Control Panel. s The printer is not properly connected to the computer. Make sure the interface cable is firmly connected to the parallel port of the printer and the computer. s You may be using a wrong parallel cable or the parallel cable may be defective. Use either of the following parallel cables: HP part no. C2950A or C2951A.

Printing is slanted on the A4 size paper. s You are printing on an A4 size paper, but the paper size selector (A4/LTR) is set to LTR (US Letter). Switch the paper size selector (A4/LTR) to A4. s Paper is not fed into the printer properly. Reload the paper. See page 3, STEP 3: Loading Paper. Printing is slanted on the Legal size paper, envelope, label, or thick paper. The Legal size paper, envelope, label, or thick paper is not fed into the printer properly. Push evenly the Legal size paper, the envelope, or the thick paper into the back of the printer until the printer pulls in the paper. See page 6, Loading Other Size Paper. Legal size paper, envelope, label, or thick paper does not advance into the printer. Legal size paper, envelope, label, or thick paper should be loaded from the back of the printer, one at a time. Push evenly the Legal size paper, envelope, label, or thick paper into the back of the printer until the printer pulls in the paper. See page 6, Loading Other Size Paper.
When the Print Quality Is Not Satisfactory
Ink is smearing or paper is wrinkling. s You are printing on an envelope, label, or thick paper, but the envelope lever ( / ) behind the printer door is set to paper ( ). Adjust the lever to envelope ( ). s You may have touched the printed page before the ink dried. Wait until the ink dries before you pick up the printed page.
The printed page looks faded. s You are printing on paper, but the envelope lever ( / ) behind the printer door is set to envelope ( ). Adjust the lever to paper ( ). s The ink nozzles are clogged. See When the Ink Nozzles Are Clogged on this page. s The inkjet print cartridge is running out of ink. Use a new inkjet print cartridge. Characters, dots, or lines are missing or are incomplete. s The inkjet print cartridge is running out of ink. Use a new inkjet print cartridge. s The ink nozzles of the inkjet print cartridge may be clogged. Clean the inkjet print cartridge. (See When the Ink Nozzles Are Clogged on this page.) Ink coverage is inconsistent. s The ink nozzles of the inkjet print cartridge may be clogged. Clean the inkjet print cartridge. (See When the Ink Nozzles Are Clogged on this page.) s The paper may not be suitable for the printer. Try another paper type. Too much ink on the printed page. s The paper may not be suitable for the printer. Try another paper type.
Some colors are missing. s The ink nozzles are clogged. Clean the inkjet print cartridge. (See When the Ink Nozzles Are Clogged below.) s The color inkjet print cartridge has run out of one or more color ink. Use a new color inkjet print cartridge.

When the Ink Nozzles Are Clogged
Prolonged exposure to air may cause ink crust to form on the ink nozzles of the inkjet print cartridge. You can try to clear the crusted ink from the inkjet print cartridge, as follows:
Note: Ink may stain your hands or clothing.
1. Hold the inkjet print cartridge by its green top. Dip a clean cotton swab into distilled water and squeeze any excess water from the swab. Clean the face and edges of the inkjet print cartridge as shown. DO NOT wipe the nozzle plate. Hold the inkjet print cartridge up to the light to inspect for fibers on the face and edges. If fibers are still present, repeat this step.
Do not clean nozzle plate

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2. Install the inkjet print cartridge in the printer and load paper in the paper tray. 3. Turn off the printer. 4. While pressing the Change Cartridge button ( ), press the Power button ( ) to activate the cleaning process. A page will then be printed. If the print quality is unsatisfactory, the inkjet print cartridge may be out of ink. In this case, use a new inkjet print cartridge.

Appendices

HP Customer Care
HP DeskJet printers set the standard for quality and reliability, so youve made an excellent choice. Should you need help, however, HP Customer Cares award-winning service and support is nearby to provide expert advice on using your HP printer or to answer specific questions about a problem you are having. Whether online, by fax, or by phone, youll find the support you needand youll find it fast.

Printer Software

Printer software (also referred to as a printer driver) allows your printer to talk with your computer. HP provides printer software and software upgrades for Windows 3.1x, 95, and NT 4.0. For MS-DOS printer software, contact the manufacturer of your software program. You have several options for getting printer software:
Download the printer software by accessing HPs Web site (http://www.hp.com/go/support). If you are in the U.S., setting up your printer for the first time, and do not have a CD-ROM drive, you can order the printer software on 3.5-inch disks by calling the toll-free phone number listed on the printer software CD case. Disks are delivered to you the next day for no charge. Bonus software that may be provided on the CD will not be provided on disks. If you are in the U. S. and need a software upgrade, you can order by calling one of the following numbers: 6/1/98-2/12/99: (805) 257-5565 After 2/12/99: (661) 257-5565 Software upgrades are available for the cost of the disks plus shipping. If you are outside the U.S. and cannot download the driver from HPs Web site, call the HP Customer Care number nearest you. See page 15.

Electronic Support Information
If you have a modem connected to your computer and subscribe to an online service or have direct access to the Internet, you can obtain a wide variety of information about your printer.
HP Customer Care Online Click your way to a quick solution! A great place to go for answers to questions about HP products is HP Customer Care online at http://www.hp.com/go/support. Youll get instant access to everything from helpful printing tips to the latest product and software updates24 hours a day, seven days a week. HP Customer Care User Forums Theyre friendly. Theyre informative. Check out our online user forums. Simply review existing messages left by other HP users to find the answers youre looking for. You can also post your questions, then check back later for ideas and suggestions from knowledgeable users and system operators. You can access the user forums directly from the http://www.hp.com/go/support. HP Customer Care by Fax When you want the factsand you want them fast call HP FIRST, our automated faxback service. Dial (800) 333-1917 (U.S. only) from any touch-tone phone, listen to your choices, then select the support document that matches your specific need. You may request up to three documents per call, and well fax them to you right away. HP FIRST is a free service, so call anytime24 hours a day, seven days a week.

HP Customer Care Repair

If your HP printer is ever in need of repair, simply call the HP Customer Care Center. A trained service technician will diagnose the problem and coordinate the repair process for you. This service is free during your printers standard warranty. Beyond the warranty period, repairs are charged on a time and materials basis.
HP Customer Care by Phone
When you want to talk to HP directly, highly trained service technicians at our HP Customer Care Center are ready to take your call. You pay for the call, but you wont be kept on hold long. Thats because 95% of our calls are connected in under three minutes. In an industry thats known to keep customers waiting, were proud of our quick response time. And because we connect you with a service technician who specializes in your product, 80% of all problems are resolved with a single phone call.

A Note About Letters

If you need help from a technical support person, we recommend that you call us while youre in front of your computer and printer, rather than writing a letter to us. That way we can help you with your questions immediately! Africa/Middle East Argentina Australia Austria Belgium (Dutch) Belgium (French) Brazil Canada China Czech Republic Denmark Finland France Germany Greece Hong Kong Hungary India Indonesia Ireland Israel Italy Japan, Tokyo Japan, Osaka Korea Malaysia Mexico D.F. Mexico, Guadalajara Mexico, Monterrey Middle East/Africa Netherlands New Zealand Norway Philippines Poland Portugal Russia Singapore Spain Sweden Switzerland Taiwan Thailand Turkey United Kingdom U. S. Venezuela 41 22/11 541781-4061/43 (0)32 (0)(0)709-1444 (905) 206-3888-(2) 45 (0)385 (0)33 (0) (0) (800) 36 (1) 353 (0) 972-9-(0)3 3335-41 22/(0)8751 (09) 356-(0)351 (0) 34 (9) 46 (0)41 (0)886 2-2717-0055 (66-2) (0) 5202 (208) 344-5664

Ninety Days Free Phone Support
Within 90 days from the time of your purchase, telephone support is provided to you free of charge. However, if you are calling long distance, the long-distance charges apply. Before placing a call for help, please make sure that:
You have checked your Users Guide and online troubleshooting for installation troubleshooting tips. You are seated in front of your computer with your printer nearby. You have the following information available: - Your printers serial number (the label is on the printers bottom). - Your printers model number (the label is on the front of the printer). - The model of the computer. - The version of the printer driver and software program (if applicable).

After the Warranty

You can still get help from HP for a fee. Prices are subject to change without notice. (Online help is still available for free!)
Extended Warranty Options
If you would like to extend your printer coverage beyond the one year factory warranty, you have the following options:
For quick questions in the United States only, call (900) 555-1500. The charges are $2.50 per minute and begin when you connect with a support technician. For calls from Canada, or for calls in the U.S. that you anticipate might be longer than ten minutes in length, call (800) 999-1148. The fee is US $25 per call, charged to your Visa or MasterCard. If during your phone call, it is determined that your printer requires repair, and you are within your printers hardware warranty period, your phone charges will be reversed.
Consult your reseller to get extended coverage. If your reseller does not offer service contracts, please call Hewlett-Packard directly and ask about our service agreement offering. In the U.S. call (800) 446-0522; in Canada call (800) 268-1221. For service agreements outside the U.S. and Canada, contact your local HP Sales Office.

HP Supplies

Description
HP Premium InkJet Paper (US Letter, 200 sheets): 8.5 x 11 in. (216 x 279 mm) HP Premium InkJet Paper (A4, 200 sheets): 210 x 297 mm HP Premium Transparency (US Letter, 20 sheets): 8.5 x 11 in. (216 x 279 mm) HP Premium Transparency (A4, 20 sheets): 210 x 297 mm HP Premium Transparency (US Letter, 50 sheets): 8.5 x 11 in. (216 x 279 mm) HP Premium Transparency (A4, 50 sheets): 210 x 297 mm HP Premium InkJet Rapid-Dry Transparency (US Letter, 50 sheets): 8.5 x 11 in. (216 x 279 mm)) HP Premium InkJet Rapid-Dry Transparency (A4, 50 sheets): 210 x 297 mm HP Premium InkJet Rapid-Dry Transparency Asia (A4, 50 sheets): 210 x 297 mm HP Greeting Card Paper (US Letter, 20 sheets, 20 envelopes): 8.5 x 11 in. (216 x 279 mm) HP Greeting Card Paper (A4, 20 sheets, 20 envelopes): 210 x 297 mm HP Glossy Greeting Card Paper (US Letter, 10 sheets, 10 envelopes): 8.5 x 11 in. (216 x 279 mm) HP Glossy Greeting Card Paper (A4, 10 sheets, 10 envelopes): 210 x 297 mm HP Glossy Greeting Card PaperAsia (A4, 10 sheets, 10 envelopes): 210 x 297 mm HP Bright White InkJet Paper (US Letter, 500 sheets): 8.5 x 11 in. (216 x 279 mm) HP Bright White InkJet Paper (A4, 500 sheets): 210 x 297 mm HP Bright White InkJet Paper (US Letter, 200 sheets): 8.5 x 11 in. (216 x 279 mm) HP Bright White InkJet Paper (A4, 200 sheets): 210 x 297 mm HP Premium Photo Paper (US Letter, 15 sheets): 8.5 x 11 in. (216 x 279 mm)) HP Premium Photo Paper (A4, 15 sheets): 210 x 297 mm HP Premium Photo PaperAsia (US Letter, 15 sheets): 8.5 x 11 in. (216 x 279 mm) 16

HP Part No.

51634Y 51634Z C3828A C3832A C3834A C3835A C6051A C6053A C6053A C1812A C6042A C6044A C6045A C6768A C1824A C1825A C5976A C5977A C6039A C6040A C6043A

Printer Specifications

Print Method Plain paper drop-on-demand thermal inkjet printing Color Print Speed These are approximate figures. Exact speed will vary depending on the system configuration and software used. Full color graphics: 4-7 minutes per page Black Print Speed These are approximate figures. Exact speed will vary depending on the system configuration and software used. Letter quality mode: 2 pages per minute Draft quality mode: Up to 3 pages per minute Mechanism Speed Letter quality mode: 167 cps at 10 cpi Draft quality mode: 330 cps at 10 cpi Resolution Letter quality mode: 600 x 300 dpi (black), 300 x 300 dpi (color) Draft quality mode: 150 x 300 dpi Graphics Resolution Full-page 75, 100, 150, and 300 dpi, and 600 dpi in horizontal axis for black only Printer Command Language HP PCL Level 3 Character Set Support HP Roman8, PC-8, PC-8 (D/N), ISO 7-bit languages (German, French, Italian, Norwegian, Portuguese, Swedish, Spanish, U.K.), PC-850, ASCII, ECMA-94 Latin 1, and HP Legal Built-in (internal) Fonts Courier (Portrait) Pitch: 5, 10, 16.67, 20 cpi Point size: 6 and 12 pt. Style: Upright (italic: 5, 10, 20 cpi only) Stroke weight: Normal, Bold
Courier (Landscape) Pitch: 10, 16.67, 20 cpi Point size: 6, 12, and 24 pt. Style: Upright Stroke weight: Normal, Bold
CG Times (Portrait) Pitch: Proportional Point size: 6 and 12 pt. Style: Upright, Italic Stroke weight: Normal, Bold Letter Gothic (Portrait) Pitch: 6 and 12, and 24 cpi Point size: 6 and 12 pt. Style: Upright, Italic Stroke weight: Normal, Bold
Hardware Compatibility Windows Environment 80386 processor and above Windows 95, 98, or 3.1x 2 MB RAM minimum for monochrome imaging 4 MB RAM minimum for color imaging 10 MB of free hard disk space
DOS Environment 8088 processor and above DOS 3.3 and above

DOS software manufacturers provide and update printer drivers for their DOS software programs. In DOS, each program is developed independently under different development standards. Therefore, the software manufacturer is able to tailor the printer driver to work specifically with their software program. The software manufacturer uses HPs printer language, called PCL, to develop printer drivers for HP DeskJet printers. Therefore, you can sometimes use a different HP DeskJet printer driver to print. However, the best driver to use is the one designed specifically for the HP DeskJet 420 series printer. Some drivers are simply renamed from previous drivers.
Why isnt there a printer driver for my brand new printer?
The software industry is moving toward development of individual software programs under a common set of development standards. The most common standard is Microsoft Windows. HP uses this common development standard to supply a printer driver for use with all Microsoft Windows compatible software programs. This is the reason that fewer DOS printer drivers are being developed over time.
If there is not a DOS printer driver for my new printer, is there another printer driver I can use instead?
Selecting a printer driver for the HP DeskJet 420 series printer in each DOS software program that you use ensures the best support for your printer. If there is not a printer driver available within your program for the HP DeskJet 420 series printer, select one of the following drivers. Printer Driver
HP DeskJet 500C/540 HP DeskJet 340/320/310 HP DeskJet 400 HP DeskJet Portable HP DeskJet 520/510 HP DeskJet 560C/550C HP DeskJet 500/PLUS/HP DeskJet

Level of Support

Most black or color printing features Most black or color printing features Most black or color printing features Most black printing features Most black printing features Most black printing features Some black printing features
How do I install DOS printer drivers?
To install the DOS drivers listed in this document, follow the instructions supplied by the software manufacturer. If you have questions or concerns about the performance of your printer when using one of these drivers, contact the software manufacturer.

Regulatory Notices

Potential for Radio/Television Interference (U.S.A. only)
The HP DeskJet 420 printer generates and uses radio frequency energy and may cause interference to radio and television reception. Your printer complies with the specifications in Subpart B of Part 15 of the Federal Communications Commission rules for a Class B computing device. These specifications provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. If the printer does cause interference to radio or television reception, which can be determined by turning the printer off and on, you can try to eliminate the interference problem by doing one or more of the following:

s s s s

Re-orient the receiving antenna. Re-orient the position of the printer with respect to the receiver. Move the printer away from the receiver. Plug the printer into a different outlet so that the printer and receiver are on different branch circuits.
To comply with FCC rules Part 15B Class B computing device, use only shielded interface cables.
Compliance Statement (Canada)
This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations. Cet appareil numrique de la class B respecte toutes les exigences du Rglement sur le matriel brouilleur du Canada.

Power adapter statement

The power adapter cannot be repaired. If it is defective it should be discarded or returned to the supplier. Das Netzteil (einschlielich Kabel und Adapter) knnen nicht repariert werden. Falls ein Teil des Netzteiles defekt ist, die ganze Einheit wegwerfen und durch eine neue Einheit ersetzen.
Hewlett-Packard Limited Warranty Statement
HP Product Duration of Limited Warranty Software 90 Days Ink cartridges 90 Days Printer 1 Year A. Extent of Limited Warranty 1. Hewlett-Packard (HP) warrants to the end-user customer that the HP products specified above will be free from defects in materials and workmanship for the duration specified above, which duration begins on the date of purchase by the customer. Customer is responsible for maintaining proof of date of purchase. 2. For software products, HPs limited warranty applies only to a failure to execute programming instructions. HP does not warrant that the operation of any product will be uninterrupted or error free. 3. HPs limited warranty covers only those defects which arise as a result of normal use of the product, and do not apply to any: a. Improper or inadequate maintenance or modification; b. Software, interfacing, media, parts, or supplies not provided or supported by HP; or c. Operation outside the products specifications. 4. For HP printer products, the use of a non-HP ink cartridge or a refilled ink cartridge does not affect either the warranty to the customer or any HP support contract with the customer. However, if printer failure or damage is attributable to the use of a non-HP or refilled ink cartridge, HP will charge its standard time and materials charges to service the printer for the particular failure or damage. 5. If HP receives, during the applicable warranty period, notice of a defect in any software, media, or ink cartridge product which is covered by HPs warranty, HP shall replace the defective product. If HP receives, during the applicable warranty period, notice of a defect in any hardware product which is covered by HPs warranty, HP shall either repair or replace the defective product, at HPs option. 6. If HP is unable to repair or replace, as applicable, a defective product which is covered by HPs warranty, HP shall, within a reasonable time after being notified of the defect, refund the purchase price for the product. 7. HP shall have no obligation to repair, replace, or refund until the customer returns the defective product to HP. 8. Any replacement product may be either new or like-new, provided that it has functionality at least equal to that of the product being replaced. 9. HPs limited warranty is valid in any country where the covered HP product is distributed by HP except for the Middle-East, Africa, Argentina, Brazil, Mexico, Venezuela, and Frances Departements DOutre-Mer; for those excepted areas, the warranty is valid only in the country of purchase. Contracts for additional warranty services, such as on-site service, may be available from any authorized HP service facility where the product is distributed by HP or by an authorized importer. B. Limitations of Warranty 1. TO THE EXTENT ALLOWED BY LOCAL LAW, NEITHER HP NOR ITS THIRD PARTY SUPPLIERS MAKE ANY OTHER WARRANTY OR CONDITION OF ANY KIND, WHETHER EXPRESS OR IMPLIED, WITH RESPECT TO THE HP PRODUCTS, AND SPECIFICALLY DISCLAIM THE IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, AND FITNESS FOR A PARTICULAR PURPOSE. C. Limitations of Liability 1. To the extent allowed by local law, the remedies provided in this Warranty Statement are the customers sole and exclusive remedies. 2. TO THE EXTENT ALLOWED BY LOCAL LAW, EXCEPT FOR THE OBLIGATIONS SPECIFICALLY SET FORTH IN THIS WARRANTY STATEMENT, IN NO EVENT SHALL HP OR ITS THIRD PARTY SUPPLIERS BE LIABLE FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY AND WHETHER ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. D. Local Law 1. This Warranty Statement gives the customer specific legal rights. The customer may also have other rights which vary from state to state in the United States, from province to province in Canada, and from country to country elsewhere in the world. 2. To the extent that this Warranty Statement is inconsistent with local law, this Warranty Statement shall be deemed modified to be consistent with such local law. Under such local law, certain disclaimers and limitations of this Warranty Statement may not apply to the customer. For example, some states in the United States, as well as some governments outside the United States (including provinces in Canada), may: a. Preclude the disclaimers and limitations in this Warranty Statement from limiting the statutory rights of a consumer (e.g., the United Kingdom); b. Otherwise restrict the ability of a manufacturer to enforce such disclaimers or limitations; or c. Grant the customer additional warranty rights, specify the duration of implied warranties which the manufacturer cannot disclaim, or not allow limitations on the duration of implied warranties. 3. FOR CONSUMER TRANSACTIONS IN AUSTRALIA AND NEW ZEALAND, THE TERMS IN THIS WARRANTY STATEMENT, EXCEPT TO THE EXTENT LAWFULLY PERMITTED, DO NOT EXCLUDE, RESTRICT, OR MODIFY, AND ARE IN ADDITION TO, THE MANDATORY STATUTORY RIGHTS APPLICABLE TO THE SALE OF HP PRODUCTS TO SUCH CUSTOMERS.