Question about HP Officejet 5780 Printer

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Black vertical line in scans and copies when fed through top document feeder.

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  • Contributor
  • 19 Answers

Clean your scan glass (thin strip of glass running from front to back, underneath document feeder) with a soft cloth and alcohol.

Posted on Jul 16, 2009

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Posted on Jan 02, 2017

antiochpc
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SOURCE: vertical black line in scan document not in copies through document feeder

Lift the lid and to the left of the main glass is a smaller glass; that is what scans during the feeding process. Make sure that it is completely clean; even a speck of dust can cause a line to appear. I took a lens wipe and cleaned mine and my line was gone.

Posted on Jun 01, 2009

  • 1 Answer

SOURCE: My canon MP830 produces a

The expert told me to run a porous piece of paper through the adf 10 to 15 times. I used a piece of Avery textured paper for notecards that I had. The problem was solved after about 5 runs through.

Posted on Mar 20, 2009

  • 142 Answers

SOURCE: black lines on scans & copies

Please perform Solution two: Clean the ADF rollers and separator pad, provided in the follwing HP web link:

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00228023&cc=uk&lc=en&dlc=en&product=421991

:) Dr Tony

Posted on May 14, 2010

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1 Answer

Copier leaves a black line when printing through the top paper feeder. Ok coping from the flatbed


When copying from the feeder the page is fed across a fixed point at the head of the flatbed. Any dirt etc on the glass at this point can present as a dark line running vertically down the printed page. When copying from the flatbed, the scan head is moved down the page so any dirt on the glass will only appear as specs. Try cleaning the glass, especially at the head of the flatbed where the feeder is loading the page to be copied.

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Probably there is nothing wrong with that scanner, just open and clean document feder with alcohol or glass cleaner.

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Check your flat bed and Document feeder scanning glass need to be clean, if any dot or dust in scanning glass of document feeder it will appear a line, check this points first
1- Check printouts from computer or FAX if it is clean problem in scanning section
2- Check using Copying a blank paper using only Flatbed if it prints without any line its problem from document feeder Scanning glass
So solution is clean the Document feeder scanning glass using wet cloth, note careful about wet cloth switch off the machine and clean it

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How do I get rid of a vertical black line on my feeder-fed copies and scans?


when using a document feeder to feed originals thru your machine the originals are "scanned" by a thin glass. this glass can get dirty with whiteout or other things. Open up the document feeder and clean the glass with a cloth with a small bit of rubbing alcohol on it. Use a flashlight to look at this glass because tiny spots can cause lines on your copies. Good luck.

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If you open to document feeder and look at the glass when scanning via flatbed, just to the left will be a smaller piece of glass. That is the glass used when scanning through the feeder. Clean that glass as there is probably a couple of spots on it.

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Open up the document feeder. You will probably find wite-out on the scanner glass.

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There must be a strip of glass about one inch wide, next to
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Clean that strip thourougly. When you use the feeder the pages
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If the problem only occurs when using the document feeder, the problem is not usually caused by the drum. When using the document feeder, try to notice where the scanner (the light assembly under your scan glass)stops just before the paper is being fed. Some multifunction machines have a small piece of glass that is separate from the large scan glass and the scanner assembly stays parked underneith it as the original is being fed over it. Most likely there is something on the glass where the scanner parks as originals are being fed thru the feeder. When putting your original on the large scan glass to copy, the mark on the glass will only show as a spot, but will show as a vertical line thru the whole copy when using the feeder.

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