Charge Corona Unit - Ricoh Neptune-P1 Service Manual

6. Details

Charge Corona Unit

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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.
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