Ricoh Aficio 2022, Service Manual

Page: 52 / 849

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