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Posted on May 16, 2011
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Printer producing thick black vertical lines on copies. ink cartridge was changed. situation seem to get worst.

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Anonymous

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  • Master 325 Answers
  • Posted on May 16, 2011
Anonymous
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Joined: Mar 15, 2011
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If the black marks can smudge replace the fuser unit, otherwise replace the drum.

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HP Officejet Pro 8600 vertical lines on all copies

I had the same problem; it happened with the first copy I tried to make directly from the printer's console - but only with the Black ink function - with the same original on the flatbed glass I then tried the Color function and it worked fine. But when I tried the Black copy function, the strong vertical lines appeared again - about 7, evenly spaced across the page and running the entire length of the page.

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What cleared it up was shutting it down, removing and re-inserting the power cord the other way, i.e., turning it around (which might have nothing to do with the outcome) and Voila! - no vertical lines with the black ink copy function - Go figure...
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I have changed the printer cartridge three times. The first two cartridges produces totally black copies; the third one has black horizontal thick lines across the page??? H E L P !

It is may be Problem with printer Fuser.
1.Confirm there is no paper pieces in backside fuser unit.if yes remove the printer cover take out the fuser unit and remove the paper pieces.
2.if there is no paper pieces you must replace
fuser unit Teflon or entire fuser unit. ordinary teflon costs about Rs300.(6 dollars)

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Some machines are very expensive to run.

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Change the mode to black and white and it should save you some money!
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Not sure if this will help but there is a small glass panel to the left of your flatbed scanner- this must be clean or else I get a black vertical line in my printing.
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