I've read other posts on this problem but didn't see a solution? There are black lines on the roller in same location of the black line and there is build-up of toner on the foam roller? What is the solution?
On my Brother fax machine, there is a blue plastic cleaning thingy on the toner cartridge used to clean the metalic wire. If you leave it on the wrong side after cleaning, you get a thin black strip down the edge of every page. Slide it over to the other side and problem goes away.
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Open the top of the fax where your documents go in. There will be a thin **** of glass where the document is read. On the end that reads "dirty" is a smudge or some white-out that needs to be cleaned. You may have to clean it with some cloth wrapped on a flat tool. Do not scrap or scratch anything, just clean enough to get the dirt off. Then make a test copy.
Open the front of the fax machine. Then pull down the the tray that has the down arrow imprinted on it. Locate the glass strip towards the back, just behind the center roller. Use a cloth and rubbing alcohol to clean the glass and that should remove the black line.
i'm not sure if you're talking about a solid black band or a bunch of little stripes running down page. does it happen when you run an internal report or only on copies? if its a black solid band, check and make sure the bluish colored tab on top of the drum is all the way to the left side. if its a group of fine lines, depending on whether it happens on internal reports or not, it could be the drum is going bad or you may have a bad scanner. write back with a little more info if this suggestion doesn't work.
If you open up the feeder door (Where your originals feed into) you will see a slit of glass going from side to side by the feed rollers. (you might need a flashlight to see it better)
On the slit glass there is probably some white out or something on the glass. All you have to do is clean the glass and this should take care of your problem.
To help you zero in on where the marks might be located, make a copy of a white piece of paper through the fax machine.
And then line up the copy that comes out with your black marks to the feeder.
This should get you in the general location.
If you have any other questions, feel free to post another question.
If I have helped you, please post a feedback and a rating.
Have a good day.
If the print can be rubbed off then this suggests the fuser unit is not working correctly. It could be that the thermistor is covered with toner and making the machine think the fuser is hot enough when it's not.
The black line could also be caused by the fuser if one of the pick off fingers is coated with toner or has worn into the Teflon of the roller.
Does the machine show the lines when you print a page from memory - such as a counter or config page? If not, this would suggest the optical path is dirty. Try cleaning the glass and look at the mirrors inside the scanner to see if they are dirty/dusty.