Charging The Drum - Kyocera Mita FS-6750 Service Manual

Operation theory
Electrophotographics system
Figure 4.2 Photoconductive drum
The photoconductive layer is photoconductive. Carriers are generated in the por-
tion exposed to laser beam to pass electric charges.
Hereafter in this chapter, the surface of the drum is called photoconductor or photo-
conductor surface.

Charging the drum

Figure below is a simplified diagram of the electrophotographics components.
Charging the drum is done by the main charger wire (in the main charger unit)
marked "A" in the diagram.
As the drum ("B" above) rotates in a "clean (neutral)" state, its photoconductive
layer is given a uniform, positive (+) electrical charge dispersed by the main
charger wire ("A").
FS-6750
Photoconductive
A
layer
B
Aluminum layer
A
A
B
Drum unit
B
4-3