Color Displacement Correction Control - Canon imageRUNNER ADVANCE C5045 Series Service Manual

2
Measurement data (SIN) transmission
Comparison of measurement data (SIN)
INT
40
α
20
SIN
10 40
Offset value (alpha) determination
Data output(D-CON)
(i.e., difference between SIN and INT)
Current gradation
100
characteristics
60 Gradation characteristics
after correction
40
α
20
40
Data output(V-CON)
2
Start
DC controller(UN1)
Patch pattern formation
Patch sensor(center)(UN49)
Patch scanning
DC controller(UN1)
Main controller2
and reference data (INT)
Main controller2
Main controller2
Inclusion of result in
D-half correction table
F-2-107 F-2-107

Color displacement correction control

This control corrects uneven exposure of the laser scanner unit or color displacement caused
by uneven rotation of the drum or ITB
Patch sensor
(front)
(UN47)
2-66
ITB belt
Registration sensor
(rear)
(UN48)
Patch sensor
(Center)
(UN49)
DC controller(UN1)
F-2-108 F-2-108
2-66