Details of the print system, Charging process – Lexmark 5021-0XX User Manual

Page 55

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General information

1-29

5021-0XX

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 1-19 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.

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