Konica Minolta 7222 - Manual (Page 258)

Cleaning Image Scanning Section (continued)
12-4
Cleaning the RADF Roller
Raise the document feeder, and clean the RADF roller with a clean soft cloth.
You may also clean with a soft cloth dampened slightly with water, if it is difficult to clean.
Never use paint solvents, such as benzene or thinners, to clean the RADF
roller.