its German web-page.
The printing quality got worse a couple of months ago – low-colour stripes, where I expected bright colour.
I called support yesterday.
He told me to take everything out (all 4 cartridges, the waster toner (box) (in Geman: Resttonerbehälter), and the other beast (I will tell you its name, once I remember)).
I should shake the cartridges a little.
I should clean “it” (that glass area, where the pictures are captured) with something fluff-free and a little wet.
I should let it dry for a couple of hours.
I should also open and close the cover a couple of times, as that would activate a cleaning mechanism.
I actually went for the dry variant, and I was rather successful. I am rather satisfied now.