Canon CP660 Service Manual page 101

The residual toner on the photosensitive drum is removed by the cleaning blade, and
is collected in the waste toner case inside the drum cartridge. Then, the potential of sur-
face of the photosensitive drum is made even by the pre-exposure assembly and the pri-
mary charging roller to prepare for a new latent static image.
The residual toner on the intermediate transfer drum is changed by the ITD cleaning
roller, transferred to the photosensitive drum, and collected in the waste toner case inside
the drum cartridge.
:
Caution
As shown in Figure 4-102, the black developing cylinder is found behind the roller
developing cylinders when we think in terms of the direction of rotation of the photo-
sensitive drum. If a color developing cylinder is in contact with the photosensitive drum
when black toner is being developed, the black toner image would be disrupted by the
color developing cylinder. This is why each color developing cylinder is moved away
from the photosensitive drum when developing black toner.
COPYRIGHT © 1999 CANON INC.
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CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 4 IMAGE FORMATION SYSTEM
4-3