I have a Canon imageCLASS MF726CDW color laser printer. It recently began wrinkling the paper and smearing the ink in a certain spot on every page. See the attached image. The smear extends the full length of the page where there is nearby ink. The document is also wrinkled slightly along the smear, though that is hard to see from the attached image.
This issue happens on every page regardless of whether it is color or just black & white. I've also tried swapping out the toner cartridges for new ones and they issue persists.
I am, admittedly, not using genuine Canon ink cartridges, though I have been using the same brand of generics for several toner cartridges and have not had this issue before.
I've confirmed the paper tray guides are in the appropriate position and not pushing the paper in too tight.
The printer is approximately 1 year old and the page count is at 15,400 (50% of which is color and 50% is B&W). I have not done any maintenance on it other than replacing toner cartridges.