Canon 1130 Service Manual page 172

6. Sequence of Operations (initial drum surface potential control timing)
130˚C
Photosensitive drum
Initial drum surface potential
revolution
Transfer drum revolution
Drum motor
Potential sensor
measurement
Laser exposure
Grid bias
Pre-exposure lamp
Transfer drum locking
motor
Post-cleaning
high-voltage output
COPY
Photosensitive drum
revolution
Transfer drum revolution
Drum motor
Potential sensor
Vd1
measurement
Laser exposure
Grid bias
Pre-exposure lamp
COPYRIGHT © 2002 CANON INC.
AINTR
3
3
VdI Vd1 VL2
VL1 Vd2
Vg2
Vg1
Figure 6-205 Sequence at Power-On
Drum surface potential
6
6
Vd1 V Vd2 V 2
L
L1
Vg1 Vg2
Figure 6-206 Sequence during Last Rotation
CANON CLC1100/1130/1150/1160/1180 REV.1 JAN. 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 6 IMAGE FORMATION SYSTEM
AINTR
Dark area potential attenuation
5
5
Vd1 VL2 Vd1 VL2
Vd3 VL4
Vg2
Vg1
LSTR
Measuring the dark area potential attenuation
9
8
9
8
Vd1 V 2 Vd1 V 2 Vd3 V 4 Vd3
L L
L
Vg2
Vg1
6 7
6 7
Vd3 VL4 Vd5
10
10
V 4 Vd5
L
8
8
VL5
11
11
V 5
L
6-13