Charging Meachanism - Canon imagePRESS C1 P Service Manual

Chapter 7
DC-CON
M3 CL1
M4
[2]
[3] [1]
[6]
[1]
[2]
[5]
[3]
[4]
F-7-47
[1] developing cylinder
[2] developer stirring screw A
[3] developer stirring screw B
[4] toner supply mouth
[5] toner discharge mouth
[6] waste toner feeding screw
M3: developing motor
M4: developing rotary motor
CL1: developing clutch

7.5 Charging Meachanism

7.5.1 Primary Charging Bias Control
0012-8166
imagePRESS C1 P / imagePRESS C1 / imagePRESS C1+ (Printer) / imagePRESS C1+
The primary charging bias is created to charge the photosensitive drum surface with even minus electric potential as a preparation for image formation.
The primary charging bias provides two types of biases; primary charging DC bias and grid DC bias.
These biases are created in the high voltage PCB 1 based on an instruction by the DC controller, and applied to the primary charging wire and grid line at a specified
timing.
The grid bias value is determined based on the result of electric potential control.
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