Drum Charge; Overview - Ricoh B291 Service Manual

DRUM CHARGE

6.8 DRUM CHARGE

6.8.1 OVERVIEW

[A]
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.
B291/B295/B296/B297
CÓPIA NÃO CONTROLADA
[F] [D]
[B]
6-56
CÓPIA NÃO CONTROLADA
[E]
B195D936.WMF
[C]
SM