Vertical lines in prints

[ksl86]

HI,

got some vertical lines in print. Can you help determine which item makes this fault?

Thanks in advance.

[tonerspills · Accepted solution]

This appears to be the Black Imaging drum of the toner cartridge, the transfer belt, or the fusing unit. Possibly a combination of multiple parts.

1.) to check the black drum, you should be able to remove it from the printer. Flip it over. look at the edges of the blue/green colored cylinder. If you see smudges or loose toner on that drum at either end. This is most likely the fault. Are you using genuine OEM HP toner? sometimes off brand toners can leak at the drum seals causing excess toner to leak out into your printer. Try to not touch the drum, as oil or contaminates can effect print quality.

2.) The image transfer belt can be removed via the right door on the printer. When that part gets close to needing to be replaced, the cleaning blade can begin to fail, causing waste toner to appear on your print outs. With marks like that, you should be able to tell right away if the waste toner is not being cleaned off the large mylar like film that transfers the image. Again, be very careful with this film and try to not get fingerprints or contaminates on it as it can effect print quality.

3.) The Fusing unit of the printer, also located in side the right door- can also begin to wear when close to time for replacement. You can check the life counter off all 3 component listed above by printing a supply status report. Administration/Reports/Supply status page. This part will be hot, but you can remove it and open the jam doors to look at the heater and pressure rollers. You should be able to see black marks on either end that match your image defect if this is the faulty part.

I can also see a repeating image defect on the right side of the picture that you posted. This almost looks like a cut or gash on either the Black imaging Drum (black toner cartridge my first suspect) or the fuser film. This makes me lean towars the fusing unit as my second suspect, because you can see where the black scratch or defect left a void where the toner did not fuse and then as the fuser roller rotated it left the mark further down the page.

You can also reference this post

http://h30434.www3.hp.com/t5/LaserJet-Printing/Ink-Streaks-When-Printing/m-p/5948944#M305275

best of luck!

[ksl86]

Thanks for the very thorough reply.

1) I do use OEM HP toner. I don't see loose toner, though some lines on the drum, see this picture:

2) The transfer belt shows a waste of toner along the belt, and when i flip the belt, alot of excessive toner comes out. So this might be the root issue? (i read the link you referenced, and the also seemed to be the problem)

3) The status page says 50% for transfer and fuser kit.

Thanks!

[ksl86]

Replacing the transfer kit dit the job, thanks for helping me out 

[072547]

vertical lines in the scanned and copied documents. But printed docs from computer come out fine? What to do about photocopy and scan? HP Office Jet Pro 8600