Drum Charge - Ricoh D009 Service Manual

Drum Charge

6.8 DRUM CHARGE
6.8.1 OVERVIEW
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 spring terminal [E], and the rear roller bushing to
give the drum surface a negative charge of –820V.
D009/D011/D012/D013 6-28 SM