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2DC
(2-2) Charging the drum
The following shows a simplified diagram of the electrophotographic components in relation to the engine system.
Charging the drum is done by the main charger unit A.
Zener
board
KP-788
As the drum C rotates in a "clean (neutral)" state, its photoconductive layer is given a uniform, positive (+) corona
charge dispersed by the main charger wire B.
Due to high-voltage scorotron charging, the charging wire can get contaminated by oxidization after a long run.
Therefore, it must be cleaned periodically from time to time. Cleaning the charging wire prevents print quality problems
such as black streaks.
2-1-10
High voltage board
CN2-A4
YC-M
Main charging output
A
B
Figure 2-1-10 Charging the drum
Engine board
Bias
board
MHVDR
YC8-5
C
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