HP OfficeJet J5780 Vertical Black Line Prints when copying or scaning only. Cleaned rollers and changed black ink cartrigde. Still problem.

Wipe the underside of the cartridge with a soft tissue and then try cleaning the cartridge again, several times if need be. Blocked jets seem to be the problem here

Yourprinter ink has spiltonto the main ICU and needs to cleaned thoroughly. This is a job for a technician. The ink is all over the roller. It will only get worse. It now needs a techy to cleanproperly.

i've fixed a simular issue recently, it could be your print head has developed a issue\blockage for the nossles for the black ink tank, it could be mixing colours from word but a black white copy will just use the black ink, try removing the head and using isopropol on a qtip to clean the head for the black only.......

try cleaning the rollers with water in the feeder at the top check the glass too too see if it's dirty

The fix is on this link:

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00704831&cc=za&lc=en&dlc=en&product=3301296

Click on this link or copy and paste the complete link into your browser.
If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe


I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

lift the feed area and look at the small glass plate where the auto feed paper is actually scanned. That needs a good cleaning. Since the paper runs across it even a tiny little obstruction such as paper left from a paper jam or a dot of ink from that pen you used to unstick that last paper jam (maybe its just me??). That one dot turns into a line when the paper rolls across it. Clean well and the line will dissappear.

Try to disconnect the power cable from the back of the unit and reconnect it after few secs. The alingment will start itself. Complete the alingment once.

Hi,

I am going to give you the technical document which you need to follow inorder to resolve your issue. Just click the link below

CLICK HERE==>> SOLUTION ON VERTICAL LINES

Also, i want you to give me feedback on how useful is the document to you.

Thank you so much.

adonscott
HP TECH

are u trying to fax from the feeder or from the scaning bed .... try to follow this link CLICK HERE

please clean the scan bed glass, rollers and then try to copy it