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HP Inkjet Supplies - Missing Lines In the Patterns Or Streaks In the Bars On the Self-Test Page


You printed a self-test page and found missing lines in one or more of the test patterns or streaks in one or more of the color bars.


Follow these steps to resolve the issue.

Step one: Did you just install a new tri-color or photo cartridge?

If all three of the following statements are true, the problem can probably be solved just by letting the printer sit for 30 minutes:
  • You just installed a photo or tri-color print cartridge (the cartridge can be either new or previously-used)
  • The problem appeared right after you installed the cartridge
  • The recently-installed cartridge is the one that is printing the defective patterns on the self-test page
Sometimes when a tri-color or photo print cartridge is snapped into the print carriage, it ingests a small amount of air, which can prevent some nozzles from working properly. The air soon works its way out of the cartridge.

Step two: Run the clean print cartridges utility

If the step above did not solve the problem, clean the print cartridges.
  1. Make sure that there is plain white paper in the input tray.
  2. Open the Printer Toolbox.
    1. Open HP Solution Center.
    2. Click Settings.
    3. Click Print Settings.
    4. Click Printer Toolbox. The Printer Toolbox dialog box displays.
    You can also open the Printer Toolbox from the Print Properties dialog box. In the Print Properties dialog box, click the Services tab and then click Service this device.
  3. Click the Device Services tab.
  4. Click Clean the Print Cartridges.
  5. Follow the instructions that display on the screen.
  6. Examine the test page that prints. If the print quality of the page is good, click Done and stop here. If the print quality is bad, proceed to the next step.

Step three: Clean the contacts

  1. Gather the following items to clean the print cartridges:
    • Dry foam rubber swabs, lint-free cloth, or any soft material that will not come apart or leave fibers.
      Coffee filters are lint-free and work well for cleaning print cartridges.
    • Clean distilled, filtered, or bottled water. Tap water might contain contaminants that could damage the print cartridge.
      Do not use platen cleaners or alcohol to clean the print cartridge contacts. These can damage the print cartridge or the unit.
    • Sheets of paper or paper towel to rest the cartridges on during cleaning.
  2. Turn on the unit and open the print cartridge door. The print carriage moves to the center of the unit.
  3. Wait until the print carriage is idle and silent, and then unplug the power cord from the back of the unit.
  4. Lightly press down on the print cartridge to release it, and then pull it toward you out of the slot.
    Do not remove both print cartridges at the same time. Remove and clean each print cartridge one at a time. Do not leave a print cartridge outside the unit for more than 30 minutes because the ink can dry and clog the nozzles.
  5. Inspect the print cartridge contacts for ink and debris buildup.
  6. Dip a clean foam rubber swab or lint-free cloth into the distilled water. Squeeze it to remove any excess water. The swab should be only slightly damp.
  7. Hold the print cartridge by its sides.
  8. Clean the copper-colored print cartridge contacts.
      Figure : Clean the print cartridge contacts
    1. Copper-colored contacts
    2. Ink nozzles (do not clean)
  9. Allow the print cartridges to dry for approximately ten minutes.
  10. Slide the print cartridge back into the correct slot. Push the print cartridge forward until it clicks into place.
    • If you are inserting the tri-color print cartridge, insert the print cartridge in the slot on the left.
    • If you are inserting the black print cartridge, insert the print cartridge in the slot on the right.
    Figure : Inserting the print cartridge
  11. Repeat steps 4 through 10 for the other print cartridge, if necessary.
  12. Close the print cartridge door.
  13. Plug the power cord into the back of the unit.

Step four: Remove and rest the black cartridge for two hours

The procedure below will not fix missing lines or streaked bars printed by the tri-color, photo, or gray photo cartridges, or other color printing problems. Only perform the steps below if the black print cartridge has printed defective patterns, or if you notice non-uniform black text darkness.
In the black print cartridge, this problem may be caused by sediments collecting in the nozzle area. Follow the steps below to solve this problem:
  1. Remove the black print cartridge.
  2. If the carriage has a latch, latch the carriage and then close the printer - this is important. If the printer is not closed, it cannot adequately protect the remaining tri-color cartridge.
  3. Place the cartridge on a level surface with the nozzles up (label down).
    Figure : Cartridge with the nozzles up
  4. Allow the cartridge to sit undisturbed for two hours.
  5. Reinstall the cartridge.
  6. Print a self-test report.
    1. Load the input tray with unused plain white paper.
    2. Press and hold the Cancel () button and then press the Start Copy Color () button.
    3. Release both buttons. The self-test report prints.
  7. Look for defects on the page. If the page still shows defects, proceed to the next step.

Step five: Replace the problem cartridge

If the previous steps did not resolve the issue, either the problem cartridge or the product is defective.
  • If you have not tried cartridge replacement previously to resolve the issue, replace the problem cartridge now. To see if your cartridge is covered under warranty, see information about warranty for cartridges and replaceable printheads. .
  • If you have replaced the cartridge and it did not resolve the issue, the product might need to be serviced.
Click Contact Support on this page for more support options.

Preventing missing lines

Missing lines occur when the cartridge nozzles dry out, or when a cartridge is running low on ink.
  • Do not remove the protective tape from a new print cartridge until just before you install it. Once you remove the tape, do not reapply it.
  • After you have removed the protective tape, do not allow anything to touch the nozzles.
  • Print at least once a month to keep the print cartridges in good working order.
  • Always turn the printer off by pressing the button on the printer control panel, rather than by unplugging the printer. Turning the printer off properly allows it to protect the cartridges.
  • If you are removing a cartridge from the printer temporarily (for instance, removing the black cartridge in order to install the photo cartridge), put it in a cartridge protector.
  • If you do not have a cartridge protector and need to remove a cartridge temporarily, put it in an airtight plastic tub. Make sure nothing touches the nozzles. Do not use a plastic bag. If you intend to store print cartridges in a tub for a long period of time, place color cartridges with the nozzles down, and black cartridges with the nozzles up.






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