Question about HP OfficeJet Pro K8600 - - color - ink-jet - A3 Plus - 1200 dpi x 1200 dpi - up to 35 ppm

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First prints clearly. Second page on lines are not completely black. If I print one page at a time (beginning each job anew), then the page is fine. I cannot print multiple sheets without light lines appearing eery 5 or 6 lines. Print Quality Dikagnostics Page looks fine. Please advise.

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Hi,

Have you been using the Printheads for long time and not changed them ?
Seems like this could be problem with the Printheads and they need cleaning.

Follow the steps below to resolve the issue

First prints clearly. Second page on lines are not - hpweb_1-2_minus.gifMethod one: Clean printheads in Solution Center

  1. Make sure the printer is loaded with unused white paper.
  2. In HP Solution Center , click Settings , and then click Printer Toolbox .
  3. Select the Services tab, and then click Clean Printheads . Figure 9: Clean Printheadsc01955791.jpg A Clean Printheads window opens. .
  4. Click Clean First prints clearly. Second page on lines are not - c01955792.jpg: Clean Printheads windowc01955792.jpg The printhead cleaning process begins. This process takes a few minutes.
hpweb_1-2_minus.gifMethod two: Clean printheads from the control panel
  1. Press and hold First prints clearly. Second page on lines are not - c01955794.jpgwer button (c01955793.jpg Press the Cancel button ( ) two times.
  2. Press the Resume button (c01955795.jpg ) one time.
  3. Release the Power button (c01955793.jpg ). Cleaning the printheads takes a few minutes, and when it completes, a page prints.
    • If the page shows no streaking , continue to Step four: Examine Test Pattern 3.
    • If the page shows streaks , repeat steps 1 through 4 up to two times before continuing to Step four: Examine Test Pattern 3.
Also, Remove the Printheads and clean the Electrical contacts ( not the nozzle from where the ink is sprayed ) with lint free cloth ( little damped in water )

Method three: Replace one or both printheads If, after repeated printhead cleaning, the Print Quality Diagnostic page shows white lines across the color blocks in Test Pattern 2 (but no white lines in the gray blocks in Test Pattern 3), one or both of the First prints clearly. Second page on lines are not - c01955795.jpgll have to be replaced. The Print Quality Diagnostic page shows which printhead should be replaced.
  1. Open the cover.
  2. Make sure paper is loaded in Tray 1.
  3. If the carriage does not move to the left automatically, press and hold the Resume button (c01955795.jpg ) until the carriage moves to the left. Wait for the carriage to stop movinFirst prints clearly. Second page on lines are not - c01955717.gif
    CAUTION: Do not proceed until the carriage is on the left. If the carriage does not move to the left automatically, turn the printer off and back on and thFirst prints clearly. Second page on lines are not - c01955718.gifg down the Resume button (c01955795.jpg ) again.
  4. Lift the printhead latch. Figure 15: Lifting the printFirst prints clearly. Second page on lines are not - c01955719.gif>c01955717.gif
  5. Lift the handle of a printhead, and use it to pull the printhead out of its slot. Figure 16: Pull the printhead out of its slot
  6. Before installing a new printhead, shake the printhead up and down at least six times while the printhead is still in its packaging. Figure 17: Shake the printheadc01955719.gif
  7. Remove the new printhead from its package, and then remove its orange protective caps.
    CAUTION: Do not shake printheads after the caps are removed. Figure 18: Open the printhead and remove the orange capsc01955720.gif
  8. Insert the printhead into its color-coded slot (the label on the printhead must match the label on the printhead latch). Press down firmly on the printhead to ensure proper contact.
  9. Pull the printhead latch all the way forward, and then press down to ensure that the latch is properly engaged. You might have to apply some pressure to engage the latch.
  10. Close the cover, then wait while the device initializes the printheads and prints the alignment pages.

This should resolve the issue.

Thank you for contacting the FixYa team

* Please rate this solution with Thumbs up and comment to help us improve providing support

Posted on Nov 13, 2010

  • ONE-Touch-Solution
    ONE-Touch-Solution Nov 18, 2010

    Hi,



    I would like to know if the solution provided for your issue " First prints clearly. Second page on lines are not completely black " is resolved ?





    Regards

    FixYa Team



    *Please rate this solution with thumbs up

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