Question about Canon PIXMA MP780 All-In-One InkJet Printer

2 Answers

Black Line printing on copies

Every time I copy something, it prints a black line down the side, about 3 inch from the left side... Both the printers we have of this brand does this. Please help. Thanks

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  • Anonymous Mar 26, 2014

    When printing sometimes it has black lines across the page they run side to side about 7 inches across the page and about 1/4 inch widestarts out just a few on the page but gets worse and sometimes all the way down the page. But if you stop the print job and make copies they are fine.The customer has changed the print cartridge and made no differenceCould someone please help.Thanks

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  • Contributor
  • 26 Answers

Just clean the glass top of the scanner and the slit of glass on the left hand side of the scanner.

Posted on May 20, 2007

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Posted on May 27, 2007

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Do your incoming faxes have the same marks?
If not you might find that the scanning part of your machine has a dirty mark on the glass or that the unit has become faulty.
Try and take a copy from the machine and print from a report or any print from memory.
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