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ADF Reader, Black lines

I try to scan something and it prints out with a black line on it. it doesn't do it when i make a copy. only when i scan it. how do i clean it. i tried to figure it out from the manual. but i couldn't. thank you

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Open ADF (automatic document feeder) cover and clean scan glass underneath. White out or post-it notes are notorious for leaving behind residue on glass when scanned. Any dot, spot or dirt will show up as a black line due to shadow effect.

Posted on Jun 03, 2009

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Posted on Jan 02, 2017

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SOURCE: ADF

There is something on the small slit glass. There should be 2 pieces of glass on the copier. One where you place your original, and the other is a small slit glass about a 1/2" width by 9" long. Check the small glass to see if there is anything like a spot of black INK or a dot of white out on there. There is something on the small piece of glass that is causing your line problem.
Hope this helps.
Good luck.
Mac

Posted on Feb 08, 2008

checkitright
  • 1362 Answers

SOURCE: Black line on document when I scan from platen or ADF or scan to save as PDF.

As a tech I've never seen that happen. from the doc feeder only Yes, not both the feeder and the glass but not show up when you print from the computer ?????????

For sure there is a dot or something on the small strip of glass, only when you do it from the feeder.
the reason is that the document is moving and the dot on the "small" strip of glass now looks like a line to the copier.

You said it also does it when you lay it down on the glass !!??(platen) that should of indicated the drum has a ring around it, but since it doesn't come out on the PC copy then the glass must have a line on it.

Posted on Oct 07, 2008

FixinFax
  • 3085 Answers

SOURCE: vertical line appears in scans using the ADF, but not with copies

The scanner element consists of many small LED's, I suspect one of them is not lighting up.

Posted on Aug 18, 2009

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1 Answer

Black vertical lines when scanning on canon mx420


the ocr sensor in the ADF needs to be replaced, I would recommend replacing the whole ADF as a whole.

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If printing is ok there're two things that could cause that defect when scanning/ copying:

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-. If the printer only has cam for scanning then the problem is on the sensor itself (the "bar" that moves when you scan something inside the scanner). It's not usual that dirt enters the sensor as It's pretty hermetic so I would think that the sensor is damaged and will need to be replaced.

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Happened with me too. Turned out to be a small sticky smudge on the ADF glass. That is the smaller glass scan area to the left of the large glass scanning area.
When using the ADF to scan or copy, make sure the smaller glass area is clean along with the rollers.

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Black line in paper


On what operation are you receiving the black line in your paper?

This problem usually appears when you try to scan or copy using your ADF (automatic document feeder).
To remove this black line in your paper, clean the ADF platen glass in your printer and do as well in the flatbed scanner glass. This ADF platen glass can be found right below where the documents in the ADF goes through. Its a glass about 1 inch in with and beside the flatbed scanner glass (the one where your documents is lay down for copying and scanning. Dried ink or paper residue sticked in the glass can cause this line in the paper. Clean it with a a clothe and spray some windex on it.

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Try to print from the machine, such as function list or counter list. If no lines, then confirm the ADF scanning mirror dirty. If got lines, the probably came from fuser unit or drum unit.

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All you need to do is to clean the small wide glass (that at the LEFT of the main flat big class). The Auto Document Feeder (ADF) specifically uses this glass to scan for copy (and fax). When it is dirty (such as small dirt or particles on the surface which is easy to gain in long run), it will create thin vertical line(s) as the result.

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Black line down the paper on copy mode. Ok in print mode.


There is most likely something on your scan glass that is blocking the scanner. Clean of both pieces of glass that are there when you flip open the ADF, or top cover. Try to copy again. If it is still there then there is either something on the scanner piece that moves back and forth to scan or one of your scan LEDs is burnt out and the scanner will have to be replaced.

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Black line on document when I scan from platen or ADF or scan to save as PDF.


As a tech I've never seen that happen. from the doc feeder only Yes, not both the feeder and the glass but not show up when you print from the computer ?????????

For sure there is a dot or something on the small strip of glass, only when you do it from the feeder.
the reason is that the document is moving and the dot on the "small" strip of glass now looks like a line to the copier.

You said it also does it when you lay it down on the glass !!??(platen) that should of indicated the drum has a ring around it, but since it doesn't come out on the PC copy then the glass must have a line on it.

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Not sure what you have tried but if there are no lines when printing but there when scanning there is something on the scanner. Could be something as small a single dot of dirt and it will put a line down the whole page. Try cleaning the glass.

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