Canon Color iR C3480, Service Manual

Page: 236 / 774

Chapter 7
7-13
F-7-16
T-7-10
UN16: color displacement sensor A (also serves as patch image sensor)
UN15: color displacement sensor B
7.3.2 Timing of Image Stabilization Control
0013-8483
Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 / Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080 / iR C3080i / iR
C2550
The items that are executed as part of image stabilization control differ depending on the condition of the machine (environment or deterioration of parts associated
with the image formation system). The following table shows the items:
T-7-11
Item Description
[1]Drum film thickness detection computes the film thickness of the photosensitive drum
[2]ATR control determines the amount of toner to supply
[3]Color Dmax control determines the best level of laser power
[4]Black Dmax control determines the best level of developing bias
[5]PASCAL control determines the best gradation table
[6]Dhalf control determines the best gradation table
[7]Abridged Dhalf control determines the best gradation table (abridged)
[8]Color displacement correction control determines the correction value of color displacement
[9]ATVC control determines the best level of transfer bias
Condition
Items
Down-time
(Max) Drum film
thickness
detection ATR control Color D-max
control
Black D-max
control PASCAL
control D-half
control Abridged D-
half control Color
displacemen
t control ATVC
control
Power-on 22 sec
(approx.)
Yes Yes Yes Yes
Drum unit replacement
(w/ new) 215 sec
(approx.) *1
Yes Yes Yes Yes Yes Yes Yes
Y
M
C
BK
[3] [4] [8] [9] [1]
[5] [7] [6]
[2]
UN16
UN15
D-CON
Laser
Scanner
Unit
M-CON