Canon imageRUNNER ADVANCE C5255 Series Service Manual page 79

2
Technology > Laser Exposure System > Various Controls > Image tilt correction control
Laser shutter position
Relation of shutter lever and cam
For Bk For color For Bk
Close Close
Shutter
Lever
Shutter Cam
Laser
Shutter
Open
Close
Open Open
Related error code
E0112-0000: Laser shutter motor error (not in home position)
If the Laser Shutter Sensor (PS29) is not in the home position at initial operation.
E0112-0001: Laser shutter motor error (operation failure at shutter close)
If the Laser Shutter Sensor (PS29) is not in the home position after approx. 10 sec from the
shutter close operation.
E0112-0002: Laser shutter motor error (operation failure at shutter open)
If the Laser Shutter Sensor (PS29) is still in the home position after approx. 10 sec from the
shutter open operation.
2 Technology > Laser Exposure System > Various Controls > Image tilt correction control
Sensor lever position
For color
(PS29)
Sensor
Lever
F-2-58
■ Image tilt correction control
● Purpose
This is to prevent the gap of laser emission.
● Execution timing
At power-ON, per total 360 sheets printing
● Execution time
Approx. 3 sec
● Control detail
1) DC Controller creates the patch pattern of each color on the ITB.
2) DC Controller compares the patch pattern with the standard value backed up in the
DC Controller by reading this patch pattern at the Patch Sensor and detects the color
displacement amount.
3) Based on the foregoing detection result, the laser emission position (tilt degree) of Laser
Scanner Unit is changed.
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