Oki OKIFAX 5950 Series Maintenance Manual page 460

R76-
Note: The bias voltage required during the developing process is supplied to the toner
supply roller and the developing roller, as shown below. -500 VDC is supplied to
the toner supply roller, -265 VDC to the developing roller.
OF5750/5950 Series January 2001
Developing roller
Base
Image drum
A3 - 32
Connected and bias supplied
when the cover is closed.
Toner supply roller