Drum Charge; Overview - Ricoh B264 Service Manual

DRUM CHARGE

6.8 DRUM CHARGE

6.8.1 OVERVIEW

[E]
[F]
[D]
[C]
[A]
[B]
B195D936.WMF
This copier uses a drum charge roller to charge the drum.
The drum charge roller [A] contacts the surface of the drum [B] to give it a negative
charge. The high voltage supply board [C] supplies a negative dc voltage to the
drum charge roller through the charge roller terminal [D], bias plate [E], and the
rear roller bushing [F] to give the drum surface a negative charge of –850V.
B264/B265 6-56 SM