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I was using generics successfully for quite a while. When I put a genuine one in the problem left, but I haven't printed much since so it isn't definitive. I believe this issue occurred through multiple generic brand cartridges. 

I changed the toner cartridge and the problem stopped. I don't have enough time on it to know if its gone for good. 

This is clearly a mechanical issue. There is some sort of slippage occurring during the printing. 

MF260MFDriverV6101WP, But this was happening before W11 as well. Its been going on for a long time. 

This is what happens when I print. it is stretched or compressed vertically.