I have had a Dell 1235cn all in 1 printer for about 10 years now, and during that time it has put in a sterling service. Unforutnately over the last few months I have had problems with smudges of yellow and black toner appearing on my printouts. This happens if it is colour, or black and white. After a certain number of prints I get a clean page, then it starts happening again. I have attached a picture of an example printout.
Can someone please advise me on what to do to resolve this problem. I would rather fix this issue and not dispose of an otherwise good printer, especially as the toner cartridges are nearly full.
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It looks like I have a similar issue with my 1235cn printer. I have a photo at the link below in case helpful, and it looks very similar to Andrew's case.
Is this something you can kindly advise on?