We have prints that have faint black lines (vertical) on the left edge of the paper. The lines go the full length of the paper and are approx. 1.5 inches wide. Is it the black photoconductor unit? Before I spend $$, I would like to be sure.
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Re: Faint Black Lines
Hi best way to check is to remove the black photoconductor and you should be able to see the little lines on it also check the the black dev/toner unit for the lines. most likely to be the black photoconductor unit though.
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Fuser hot belt has wear lines transfering to the page
Black pcu needs to be replaced
Transfer unit is not being cleaned properly and needs to be replaced.
Remove each of these assy and inspect them for wear or lines that corespond to the lines on your prints.
Are they lines from one edge to the other in a straight line. Or is it faint reprint across the page?
Thin lines would most likely be a bad drum or cleaning blade.
If it is faint reprint it is the heat roller in the fuser.
Do the black lines only show up when useing the adf???? Or do they show up on both the adf and the copyboard glass??? If it is only when using the adf...... The fix is easy.... you have to clean the smaller piece of glass that is to the left of the copyboard glass with windex or rubbing alchola. If it is with both you may need a new drum and blade or a new ufr... Good Luck
Are the lines always in the same places? If they are, then I would try using different photo paper. Humidity plays a big factor when printing with any kind of paper and buying new paper would be a good start. Make sure that the paper is made for your printer specifically. You might also try printing on plain paper to see if you get the same results.