Canon Color imageRUNNER C4580 Service Manual - page 215
of
851
Chapter 8
8-2
8.1.2 Major Components
T-8-5
F-8-1
Name
Description
Laser driver
generates laser light.
Polygon mirror
scans the laser beam in main scanning direction.
guide mirror
directs laser light in the direction of the drum.
Corrective lens
corrects displacement of laser light coming from the guide mirror in
main scanning direction.
displacement correction
motor
moves the corrective lens to correct displacement in main scanning
direction.
BD detection PCB
detects laser light as a BD signal.
BD mirror
reflects the laser light in the direction of the BD detection PCB.
Displacement
correction motor
Photosensitive drum
Polygon mirror
Guide mirror
Corrective lens
Laser driver
(front)
(rear)