My printer keeps putting these annoying black lines on my docs. I have an important paper to print and I cant have black lines on it! UGH! I tried dusting and cleaning the drum and restarting the computer and printer but nothing works!

Ran into this problem myself on a few inkjet models. Check to ensure you've programmed the unit for the type of paper (matte, photo, glossy, etc.) and that your paper matches your machine (most inkjets won't print correctly on laser photo paper). If those are OK, try cleaning your rollers - many newer units have an auto-clean setting. If that doesn't work try this: Unplug your printer. Turning it off is NOT the same thing since many units have a form of stand-by to decrease warm-up time, much like TVs. Take an old, soft T-shirt or other lintless absorbent cloth & dampen it slightly. Hopefully the cartridge holders are off to the side so you can see where the paper feeds through. Gently rub the rollers, changing areas of cloth as they become ink-soaked until they're clean. To check if clean: turn unit back on & put a clean sheet of paper on the glass to copy. I use stick glue (for kids) to put 2 regular pieces of paper together (mimics thickness of photo paper) & use this for the machine to print out my (hopefully) blank page.

Oh, and I wear vinyl gloves to keep my hands from getting stained anytime I work with printer ink. (My doc always gives me a few pair free whenever I come in). Good luck!

you did not indicate machine or how you are printing.

1- printing from glass or doc feeder?
did you check the small scanning glass on left side?
usually if there is a dot (pen dot or similar) it will come out as a line on docs, this is because the paper is moving while scanning, so it now sees the dot a s a line. Line up the paper w the glass you should see where the problem is comong from.

call hp support...

I’m happy to assist further over the phone at https://www.6ya.com/expert/norman_d2fa496dce30c65d

try to make a copy ...if success
try to disconnect the power cable from the back of the printer and reconnect it after 20 seconds
try to print from the notepad ...............if success great
or else
uninstall the printer from the computer and reinstall the printer as a fresh
it should work and it has worked in most of the issues ................. thank you
HAMID

This happend to me also and I finally found out that the printer uses collor cartidges for GRAY printing. The back cartridge is used for BLACK printing ONLY. So if the printer was short of one collor in my case it was magenta (red) the gray parts of BW prints started to be green!!! When I put new magenta cartridge to the printer gray was gray again...

inside the printer on the paper pulling roller there will be some powder got collected on it due to this a black line appears on the paper.the power faLLS FROM THE TONER WHEN THE WASTE POWDER COLLECTING SECTION IN THE TONER GETS FULL SO IT FALLS on the roller while printing and this happens.take a air blower .bolw in to all the parts of the printer.keep the printer off .remove the toner cartridge.and keep the toner assessing door opened.and then blow the air in the printer.and then check out.

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...

change the paper size in the printer properties for example to a4, or to lettersize.ehat the actual sizeis.or the problem is with paper feeder gears. try cleaning them.

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?

u need to remove the fuser and remove the paper in it, put fuser back in the reverse