Canon imagePRESS C1 Service Manual - page 388
Chapter 7
7-39
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.
[1]
[2]
[3]
[4]
[5]
[2]
[1]
[3]
[6]
M4
DC-CON
M3
CL1
M
Y
L
C
Bk