Copy Process; Overview - Ricoh B089 Service Manual

COPY PROCESS

1.7 COPY PROCESS

1.7.1 OVERVIEW

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.
BB089/B093
8
9
2
3
1
7
5
4
B089V101.WMF
1-14
B089V401.WMF
6
SM