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HP Officejet J4500/J4600 All-in-One Printer Series - Poor Quality Black Text

Issue
The quality of printed black text or solid black figures in the printed output is unacceptable.
Figure : An example of an uneven darkness pattern
Solution
Step one: Wait 30 minutes
If possible, let the printer sit for 30 minutes, then try printing again. In some cases a rest period allows the product to recover from temporary printing problems.
  note:
If a refilled or remanufactured print cartridge has been installed, or a cartridge that has been used in another printer, the ink level indicator will be inaccurate or unavailable.
  1. Open the Printer Toolbox.
    1. Open HP Solution Center.
    2. Click Settings.
    3. Click Printer Toolbox.
      note:
    The Printer Toolbox can also be opened from the Print Properties dialog box. In the Print Properties dialog box, click the Services tab and then click Service this device.
  2. Click the Estimated Ink Levels tab.
    Figure : Officejet J4500 Series-Estimated Ink Levels
      note:
    A cartridge might be running out of ink even if the graphic shows that there is ink remaining in the cartridge. Lines or streaks always appear in printouts when the cartridges begin to run out of ink. Replace print cartridges that are out of ink or low on ink.
Step three: Run the clean cartridges utility
To clean the cartridges from the device control panel, use the following steps.
  1. Make sure letter, A4, or legal sized, unused white paper is loaded in the main tray.
  2. Press the Setup button () on the control panel of the product.
  3. Press the right arrow button () to select Tools, and then press OK.
  4. Press the right arrow button () to select Clean Cartridge, and then press OK.
  5. The product prints a page that can be recycled or discarded.
Step four: Clean the contacts
  1. Gather the following items to clean the ink cartridge and carriage:
    • Clean distilled water. Use bottled or filtered water if distilled water is not available. Tap water can contain contaminants that damage the ink cartridge.
    • Clean cotton swabs or any soft, lint-free material that will not stick to the ink cartridges (coffee filters work well).
    • Sheets of paper or a paper towel to rest the ink cartridge on during cleaning.
  2. Open the ink cartridge access door and wait until the carriage is idle and silent.
  3. Disconnect the power cord from the back of the printer.
  4. Remove the ink cartridge and place it on a piece of paper with the nozzle plate facing up.
      note:
    Do not leave the ink cartridges outside of the printer for more than 30 minutes. If the ink cartridge is outside of the printer for too long, the ink can dry and clog the nozzles.
  5. Dip a clean foam-rubber swab or lint-free cloth into distilled water, and then squeeze any excess water from it.
  6. Clean only the copper-colored contacts
      Figure : Cleaning the contacts
    1. Copper-colored contacts
    2. Ink nozzles (do not clean)
  7. Repeat these steps for the other ink cartridge.
  8. Lightly moisten another cotton swab with distilled water, and then squeeze any excess water from the swab.
  9. Use the swab to clean the electrical contacts in the carriage, located inside the printer on the carriage slots.
    Figure : The electrical contacts in the ink cartridge slots
    Image: The electrical contacts in the cartridge slots
  10. Wait 10 minutes to allow the ink cartridge and carriage electrical contacts to dry.
  11. Reinstall the ink cartridges.
  12. Close the ink cartridge access door.
  13. Reconnect the power cord to the back of the printer.
  14. Press the Power button to turn on the printer.
  15. Try to print a page.
  16. If you are still unable to print, repeat these steps to clean and reseat the ink cartridges. Multiple cleanings might be necessary to restore printing.
Step five: Remove the black cartridge for two hours
  note:
This procedure will not fix missing lines or streaked bars printed by the tri-color cartridges, or other color printing issues. Perform these steps only if the black cartridge has printed defective patterns, or if there is a problem with the quality of black text or solid black figures.
Follow these steps to solve this issue.
  1. Remove the black cartridge.
  2. Close the printer.
    • If the printer is not closed, it cannot adequately protect the remaining tri-color cartridge.
    • If the carriage has a latch, close the latch and then close the printer.
  3. Place the cartridge on a level surface with the nozzles up (label down).
  4. Allow the cartridge to sit undisturbed for two hours.
  5. Reinstall the cartridge and print a diagnostic test page.
Step six: Replace the cartridge
If a cartridge replacement was not tried previously to solve this problem, replace the problem cartridge now. Go to Ink Cartridge and Printhead Limited Warrantyto see if the cartridge is covered under warranty.

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