Details Of The Print System; Charging Process - Lexmark C500n Service Manual

Details of the print system

Charging process

In the charging process, the OPC belt is evenly charged by the charger. See "Printer theory of operation"
on page 1-14 for charger unit location.
The charger unit consists of a charging brush and a discharge roller.
1. The charge brush charges the OPC belt surface to
-Vo(V) potential. The charge on the surface of the OPC belt is then smoothed to an even -Vo(V) by the
discharge roller.
2. The charger unit controls the grid to a constant voltage of ZD(V) for even charging.
3. Before charging, the OPC belt surface is -CBV(V).
The charger unit evenly charges the OPC belt surface to -Vo(V) by generating a negative charge.
5023-110
1-23
General information