Canon CLC 1120 Service Manual page 165

6. Sequence of Operations (initial drum surface potential control timing)
Photosensitive drum
revolution
Transfer drum revolution
Drum motor
Potential sensor
measurement
Laser exposure
Grid bias
Pre-exposure lamp
Transfer drum locking
motor
Photosensitive drum
revolution
Transfer drum revolution
Drum motor
Potential sensor
measurement
Laser exposure
Grid bias
Pre-exposure lamp
Transfer drum locking
motor
COPYRIGHT © 1999 CANON INC.
o
130 C
AINTR
Initial drum surface potential
1
1
Vd1 VL1 Vd2 VL2
Vg1 Vg2
Figure 6-205 Sequence at Power-On
COPY
Drum surface potential
6
6
Vd1 VL2
VL1 Vd2
Vg1 Vg2
Figure 6-206 Sequence during Last Rotation
CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 6 IMAGE FORMATION SYSTEM
AINTR
Dark area potential attenuation
Measure- ment
5
5
Vd3 VL3
Vd4VL4
Vg1 Vg2
LSTR
Measuring the dark area potential attenuation
8
8
Vd3 VL3
Vd4VL4
Vg1 Vg2
6
6
Vd6
Vd5 VL5 VL6
9
9
Vd5 VL5 Vd6 VL6
6-13