Question about Brother MFC-970MC Plain Paper Thermal Fax

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Vertical dark line on copies

No matter how I clean it according to the manual I cannot get the dark line to disappear on copies

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  • beatricemary Mar 21, 2008

    I have a similar problem with my Brother MFC-440CN. When I print to the printer from the pc, the printed copy comes out clear, as it should. When I use Paperport and scan (using the MFC), the vertical line appears in the scanned copy and subsequently the viewed copy of the printed copy appear with vertical line. I tried reinstalling Paperport and of course, I cleaned the screen - don't know what steps to take.

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That is comming from the scanner. If cleaning it well does not help, then it is one of the segments in the CCD assembly within the scanner that is the problem. That would requiring replacing tha scanner .
it could be a small scratch on that screen also.
Only thing you can try would be use some rubbing alcohol and a regular piece of 20 pound copy paper to clean the scanner glass/screen vigorously.

Posted on Mar 21, 2008

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I would look at the scanner. It is not involved in the printer process but is in the copy process. Clean the glass with a glass cleaner and soft cloth. Remove the glass and also clean the lamp assembly. If either part has a dark mark on it it would leave a line on the copy. If this does not solve your problem and the unit is several years old I would replace the lamp. Let me know if you need more assistance.

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You have to clean the scanner.Open the dock feeder area,and make sure the scanner glass is clean sometimes the glass look clean but just a smaal dot on the glass can cause a line.Clean also the white area above the scanner.The white area above the scanner help for shading operation of the mchine.Make sure you clean with a sullotion that can remove ink but not damage plastic.

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The MFC-7420 Manual recommends cleaning the scanner glass and white plastic bar above it with isopropyl alcohol. Page 11-22 has a diagram.

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No matter how I clean it according to the manual I cannot get the dark line to disappear on our fax machine copies


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Copies here and recipients faxes: dark, lined


How long has the drum been in there?
try this:
1-take out toner, look and see if it is ok. do you see stripes on it?
2- look at the drum are there any black rings on it? ( you did not specify white or black lines)
3- where the glass is on the opposite side ( the part you lifted to clean the glass, look at it standing from the back. you will see a white metal plate with some springs in it if you touch it. this is the reference that the fax has if there is/are a black dot on it it will give you a black line clean carefully. if it is scratched use white out to cover and make white again.

For the darkness try making a copy in photo mode if it is still too dark change drum.

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