Black stripes down paper

If computer printing is fine (source) but scanner printing has problems, then of course, your problem is in the scanner. The only solution based on your info (which is good), are the lines in the same areas on other bad scanning prints? If so, your problem means that the scan-head has a connection problem leaving a 'black' send to the print buffer. This will require some technical repair replace or clean connection. Remember that this is a mechanical movement that not only records what it 'sees'e but at what X-Y location the read was 'seen'. It would be worth it to get an estimate from your local computer repair center give you an estimate.

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.

On back side of printed paper?

It means that you have an ink in paper path, i would ques on registration roller (long black roller which you can see when you open the printer cover).


Try to print 20-30 white sheets or similar to get rid of stripes

try copying the document to your computer and then from computer take a print out.

try to clean the class of the machine, if its still there, this means the black drum is scratched since its fine with other colors, to test it very good open the document feeder(put it up) and hit start buttom(without putting anypaper on class), black paper will come out, check if the line there, if yeah, change the black drum.
let me know wat happen Regards

I’m happy to help further over the phone at https://www.6ya.com/expert/mustafa_06f84c65ab5cc745

It sounds like the black drum unit needs to be replaced.

the waste ink pads are full ..when the black line appears it is an indicator that the waste ink pads are full it is usualy because the printer has reached its life expectancy the solution is either buy a new printer or pay a tech about 170 dollars to repair it

Remove the black drum and see if see the line on the drum that you see on the paper---if it is replace the drum unit.. Good Luck

When coping I have a black line down the left side of the page. This only happens when I'm copying NOT when I'm printing off a document from Word or the Internet on my computer. How can I get rid of this black line?

There is a small strip of glass on the left side directly under the edge of the scanner, About a half an inch wide. It has something on it.
May be very hard to see, use a strong glass cleaner or some alcohol and a regular piece of paper to clean it with.