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CHAPTER 3 LASER EXPOSURE SYSTEM
The laser exposure system consists of the following major components:
The machine uses a small-diameter, 12-facet polygon mirror, a lens construction
possesing a large angle of radiation, and a single-beam laser, all with considerations to high
speed, low power, and low noise operation.
Imaging lens 3
BD mirror
Laser mirror 2
Laser mirror 3
Laser mirror 1
Components
Laser semiconductor
Laser scanner motor (M15)
Polygon mirror
BD mirror/BD PCB
Laser driver PCB
DC controller PCB
3-2 P
Collimator lens
Cylindrical lens
Photosensitive drum
F03-101-01 External View
Visible laser light (aboxut 660 nm), 1 beam
DC motor, 2-speed control
12-faceted
Detects a laser beam.
Controls laser activation.
Controls laser scanner motor rotation.
T03-101-02 List of Components
COPYRIGHT © 2001 CANON INC.
12-facet
Laser unit
polygon mirror
Imaging lens 1
Imaging lens 2
Laser mirror 4
BD PCB
Description
2000 2000 2000 2000
CANON iR5000i/iR6000i REV.0 JUNE 2001
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