Oki OKIPAGE 10i Maintenance Manual page 28

(2) Charging
Charging is actuated by the application of the DC voltage to the charge roller that is in contact with
the image drum surface.
Power
Charge roller
supply
Image drum
The charge roller is composed of two layers, a conductive layer and a surface protective layer, both
having elasticity to secure good contact with the image drum. When the DC voltage applied by the
power supply exceeds the threshold value, charging begins. The applied voltage is proportional
to the charge potential, with offset of approximately –550V.
charge potential
[V]
-750
-550 -1300 [V]
applied voltage
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