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CIRCUIT DESCRIPTION
Samsung Electronics
Repair Manual
3-4-2-4. Developer Unit
On the surface where OPC drum and developer roller (rotate in opposite direction) meet, the toner that has negative elec-
tric characteristic moves to the exposed part (-50V) due to the electric potential difference, but it will not move to the unex-
posed part (-800V).
3-4-2-5. Transfer Unit
Toner on the OPC drum is transferred to paper by transfer unit. In other words, the toner on the OPC drum surface is induct-
ed by the transfer roller electrified to approxi1.3KV(600~2800V variable) to the paper.
At this point, the voltage (600~2800V variable) is determined by temperature and humidity.
The above process is called “transfer”.
OPC
T/R
GND
1.3 KV
Summary of Contents for SF-530 Series
Page 87: ...Electronics ...
