Question about Brother DCP-7020 All-In-One Laser Printer

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How to get rid of dark black lines on the printed copy?

Posted by Anonymous on

4 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 37 Answers

SOURCE: 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.

Posted on Dec 17, 2008

leroyal
  • 2120 Answers

SOURCE: Black line while scanning and copying

Open up the document feeder and clean the scanner glass

Posted on Jan 25, 2009

qwertyisone
  • 6 Answers

SOURCE: Bold black lines across the paper when printing,scan or copy not on faxing

I realise this is probably too late for you Janet and you will have bought a new drum unit by now or replaced the printer! The three lines appeared on my print-out from a new drum I installed and after investigation it transpired that there was some toner residue that had dried on the drum (from testing at manufacture stage probably) and reprinted three bold lines on a sheet of A4. The solution is to use a soft piece of cloth and rub the lines off the drum through the gap at the front of the drum unit. The drum can be rotated by turning the gear cog on the side, then once the reside has been removed from the drum and it is clean, the lines will have disappeared. I wouldn't use any solution on the drum, just gentle rubbing should suffice.

Posted on Aug 19, 2010

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A line appears down the length of the page on all copies, printing and scanning. How do I get rid of the line?


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It depends... never use a Reman cart in these machines... only use sharp...especially if the machine is under warranty.

Does this happen when,
Using the Doc Feeder
When making copies from the Glass
Or when you print from a computer (assuming you print from a PC)

If you print something and this happens then it is inside the machine
Probably toner or developer dumping...

Take a few pieces of large white paper and cover the entire glass surface... make a copy is the line there? If so see the answer above... if not then close the top and make a copy with no paper on the glass... is that black line there.. If so then your top needs adjustment...

One more test
If you make a copy using the doc feeder, this black line only occurs when making copies with the doc feed, clean the **** glass, and try again...

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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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