I tried a generic drum & generic toner – and it prints dirty.
I also tried cleaning everything per the instructions in the documentation.
Could it be a faulty drum unit? Or is it just a generic drum unit issue?
I am about to buy a new drum unit, and don't want to buy generic if it will always cause this issue.
Thoughts?
P.S. I tried new toner cartridges (generic, but I know these work with a 'genuine drum' properly).
Edit 1: This is a scanned image of a sample print-out (redacted for privacy purposes):
Best Answer
I can't really comment as to whether your generic drum is at fault, especially as you haven't listed the make - have you checked to see if others are having problems with this source of drums?
I also note that this unit has an exposed corona wire - I assume that you have cleaned it?
It did find some information about splotches on prints and possible drum issues. There doesn't seem to be a consensus as to whether the cause of the splotches is the toner or drum.
Do check visibly for signs of damage on both. Also check with a bright light in the printer to see if you can spot any leaked toner. Also use the link above to check for regularly repeating marks as this may indicate the issue.