Black smudge marks along left side edge of paper.

Defective cartridge.

need to replace drum or cartridge

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

Can you tell how manny marks are there on the paper.Between 3 or 4 ?

Try running its Clean Cartridges command.

try cleaning the grid on the drum unit otherwise there could be some thing on the fuser preasure roller.

1. Do you use refilled or genuine Canon cartridges?
2. Anyway, try to clean the printheads, because they seam to leak.
3. Verify if the cartridges are correct alignet (in maintenance software you have soewhere an "align cartridges" function

Hi, try to pull out complete process unit(cartridge) with toner box .You have cleaner(blue or green color) move this cleaner from right to left side 4 or 5 times.Note that cleaner MUST be in home position-right side when you finish.Check print.
If problem still persists, you must do following:take away small grey plastic cap on left side of cartridge,then push complete charge corona(part with cleaner on top of it) to left side just enough to lift right side of corona from cartridge.Pull out that corona and you can see drum and developer roller. Turn the gear on drum,and look for smudges on black developer roller.Try to clean smudges with brush or with dry cloth.Toner will again attract to that area,but regular.

Pease check:
thet consumables is originals,
drum cartridge is not damaged
transfer belt is clean and not damaged.

you may have problem there, but if not you can try update firmware, maybe its a firmware problem.

first check consumables and if possible try changing them