Ricoh SP 3710DN - Drum Charge; Mechanism

Print Cartridge (AIO)
M0C3/M0C4/M0C5/M0C6/M0C7 7-24 SM
7.7.2 MECHANISM
Drum Charge
The charge roller [B] gives the drum surface [A] a negative charge of approximately –550V.
High voltage is supplied from the power pack (HVP) flow bias plate [C].