|Hi Wizard - could it be the smudges on the right?|
Wizard's advice is good. If this is not the cause, I would suspect the problem could be you have used a compatible cartridge.
These can work OK and you save money, whereas others will fail. Authentic cartridges etc. are the best.
I know this is a laser, but as an example, I sometimes refill Inkjet cartidges.This worked ok, until one printer produced labels that easily smeared. Transpired the labels were being used in a damp environment, coupled with the refill ink being water based, whereas ink in original cartridges from the printer manufacturer was oil based.
Good Luck - Keep us posted.