Canon CLBR 460ps Service Manual page 128

CHAPTER 2
Step 8 ITB cleaning
In this block, the residual toner charged uniformly by ITB cleaning roller in step 7 is moved from
the intermediate transfer belt to the photosensitive drum.
Different levels of biases are applied to the photosensitive drum and the intermediate trans-
fer belt to produce a difference between the potentials of the photosensitive drum and interme-
diate transfer belt and move the residual toner from the intermediate transfer belt to the photo-
sensitive drum.
Photosensitive drum
ITB cleaning roller
contact cam
ITB cleaning roller
Photosensitive drum potential < Intermediate transfer belt potential
2 - 70
Primary charging roller
Drum cartridge
Intermediate transfer belt
DC
Figure 2-4-27