How to eleminate the line on the edge of the paper

The smudges on the side of the paper is most likely a piece of something rubbing against the paper just after the printer puts the ink on the paper. Inspect as much as possible the path that paper takes. Look at rollers. Anything that grab the paper. Look for ink and dust build up. As for the vertical lines. Could be several things. I you haven't used you printer for awhile the ink in the nozzle could of dried up. Most new printers have a nozzle cleaning function. Try that it a couple of times. See if that helps. If it shows any sign of change after that, it dried up ink. It's a hassle to try to get the ink flowing again. I normally just to replace the cartridges. Let me know if this helps or not.

Smudges are most likely from the toner cartridge. If you can take your finger and run over the print and it smudges, then it is the fuser.

Hi,
If you are ask printer paper Quality then first you check it ink label and then you check paper quality because both are depend which types of quality you are used. If one in dull then printer quality also dull. I share a print quality related link please read and follow instruction.

http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&docname=c01691481

Thanks,
HP Printer Support

this is possibly a problem in the fuseing part of your machine, where the paper heats up at the back, the fuser roller could be worn out. and your toner could be sticking to it.

Hi:

This is a common problem with some HP printers. The fuser sleeve inside the fuser assembly gets torn along the edge and print can no longer be fused in that area and the paper will crinkle there. The only solution would be to replace the fuser, which for that printer it would not be worth repairing.

Andrew

Try:

• Smeared, smudged or scratched prints (on the printed side)
• Streaks or uneven printing on the trailing edge of the paper

Try running its Clean Cartridges command.

Bad fuser. Replace it.

MACHINE NEEDS A MAINTANCE CLEAING AND THE OVERFLOW TANK NEEDS TO BE EMPTIED

GO ON LINE AND TYPE

CANON 850i NEEDS SERVICE AND INSTRUCTIONS ON HOW TO

ROD

1 of 3 things I can think of off top of my head.
Since they are straight, I would suspect the transfer unit.
If it were just one color it would be that imaging unit.
Unlikely the fuser.
It doesn't sound line an issue called bar coding ,where the machine prints random lines. That would be a software issue.
Take the transfer unit out and inspect it for the marks.
I am assuming the streaks are on all colors correct?
If it isn't on the transfer belt, and on all colors check the fuser and see if its latched.