Construction - Canon iR4570 Series Service Manual

7.1 Construction

7.1.1 Specifications of the Image Formation System
iR2270 / iR2870 / iR3570 / iR4570 / iR3530
Drum Unit Specifications
Photosensitive drum
Drum type
Drum diameter
Cleaning mechanism
Process speed
Primary charging
Charging method
Charging roller diameter
Cleaning mechanism
Transfer charging
Charging method
Charging roller diameter
Pre-Exposure Unit Specifications
LED
Timing of light
emission
Developing Unit Specifications
Developing cylinder
diameter
T-7-1
OPC
30 mm
by cleaning blade
230 mm/sec (iR3570/4570/3530)
137 mm/sec (iR2270/2870/2230/2830)
by roller (AC + DC)
16 mm
by brush roller (reciprocating mechanism)
by roller (DC)
16 mm
T-7-2
12 pc.
in response to drum rotation
T-7-3
20 mm
Chapter 7
0006-6168
7-1