Charge Corona Unit - Ricoh B286 Service Manual

6.4.3 CHARGE CORONA UNIT

The charge corona unit [A], above the OPC drum, uses the Scorotron (Negative) Charge
Method (! Photocopying Processes – Charge – Corona Charge)
There is one gold-plated charge wire behind some grid wires. The grid wires make sure
that the charge on the OPC drum is constant.
Charges used for this machine:
! Grid: -825 V
! Drum surface: -850 V
Corona wire: About 1200 μA
!
SM 6-25
Around the Drum
B286/B289