Copy Process - Ricoh R-C4 Service Manual

21 July 2006

6.3 COPY PROCESS

1. EXPOSURE
A xenon lamp exposes the original. Light reflected from the original passes to
the CCD, Were it is converted into an analog data signal. This data is
converted to a digital signal, processed and stored in the memory. At the time
of printing, the data is retrieved and sent to the laser diode. For multi-copy runs,
the original is scanned once only and stored to the memory.
2. DRUM CHARGE
In the dark, the charge roller gives a negative charge to the organic photo-
conductive (OPC) drum. The charge remains on the surface of the drum
because the OPC layer has a high electrical resistance in the dark.
8
9
2
3
1
B205D908.WMFF
7
5
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B205D907.WMFF
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COPY PROCESS
6