Fresa G024, Руководство по обслуживанию

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PCU (PHOTOCONDUCTOR UNIT) 31 March, 1999
2-12
2.2.5 CHARGE CORONA UNIT
The charge corona unit [A] supplies a negative charge to the OPC using a single
scorotron corona wire. The coil spring electrode [B] supplies the voltage as soon as
the PCU motor starts.
The charge inlet fan [C] removes ozone from the charge corona unit.
The charge corona unit has a sliding cleaner [D] so that the user can clean the wire
and grid.
The high voltage board applies a constant current (-700
µ
A) to the charge corona
wire. The grid (a stripe-pattern type grid) receives a constant voltage, which
depends on the results of process control (the default setting is -600 V).
G024D605.WMF
G024D607.WMF
[A]
[B]
[C]
[D]
Electrode for the grid
Electrode for the wire