Step 9: ITB cleaning
The cleaning blade scrapes the residual toner off the surface of the ITB. The residual toner feed screw
deposits residual toner in the toner collection box.
Figure 1-21 ITB cleaning
ITB
Cleaning blade
Residual toner feed screw
Step 10: Drum cleaning
The cleaning blade scrapes the residual toner off the surface of the photosensitive drum, and toner is
deposited in the toner collection box in the cartridge.
Figure 1-22 Drum cleaning
Cleaning blade
Photosensitive
drum
CRG toner collection box
Print cartridge
Each print cartridge is filled with toner and consists of the following components:
●
Photosensitive drum
●
Developing unit
●
Developing roller
●
Primary-charging roller
28 Chapter 1 Theory of operation ENWW
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