Canon MF8100 Series Service Manual page 49

a DC positive bias onto the ITB and a DC negative bias onto the drum, to return the residual toner to the drum.
Residual toner
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.
Drum cartridge
DC bias
(negative)
Photosensitive
drum
ITB
Drum cartridge
Cleaning blade
Photosensitive
drum
Screw
Waste toner
case
DC bias (positive)
F-2-25
Screw
ITB
Waste toner
case
DC bias (positive)
F-2-26
Waste toner
transport plate
Screw
Stirrer
Waste toner
transport plate
Screw
Residual toner
Stirrer
Chapter 2
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