Laser Exposure System; Outline Of The Laser Exposure System - Canon iR105 Service Manual

CHAPTER 2 NEW FUNCTIONS

4 Laser Exposure System

4.1 Outline of the Laser Exposure System

The laser exposure system consists of a laser unit (source of laser beams) and a polygon
mirror. It scans the photosensitive drum (main scanning direction) to create a latent static
image. It is a twin-laser mechanism (laser A, laser B), and its basic construction is as shown
in F02-401-01 and T02-401-01.
Laser A
80µm
Laser driver PCB
Laser B
8-face mirror
Laser unit
Collimating lens
Laser scanner motor
Laser mirror
BD PCB
BD mirror
Photosensitive drum
Laser A
Laser B
18 pixels (760 µm)
F02-401-01
2-51
COPYRIGHT© 2001 CANON INC. 2000 2000 2000 2000 CANON iR105 REV.0 JULY 2001