Service manual

Chapter 2
2-13
a DC positive bias onto the ITB and a DC negative bias onto the drum, to return the residual toner to the drum.
F-2-25
Step 12: Drum cleaning
In this step, the residual toner is cleaned from the drum to prepare for the next print operation.
The residual toner on the drum is scraped away with the cleaning blade. The removed toner is collected with the waste toner screws into the waste toner case. This
allows the drum surface to be cleaned.
F-2-26
Photosensitive
drum
DC bias (positive)
Residual toner
ITB
Screw
Screw
DC bias
(negative)
Waste toner
case
Drum cartridge
Waste toner
transport plate
Stirrer
Photosensitive
drum
DC bias (positive)
Residual toner
ITB
Screw
Screw
Waste toner
case
Drum cartridge
Waste toner
transport plate
Cleaning blade
Stirrer