Construction; Outline Of The Laser Exposure System - Canon iR7086 Series Service Manual

6.1 Construction

6.1.1 Outline of the Laser Exposure System

iR7105 / iR7095 / iR7086
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 4-laser mechanism (laser A, laser B, laserC, laserD).
Laser Light
Laser Scanner Motor
Polygon Mirror
Control Mechanism
Wave length 645 to 665 mm (visible light)
Output 20mW
Number of beams 4
Type of motor DC brushless
Revolution 29527 rpm (approx.)
Number of facets 12 (35-mm dia.)
Synchronization
Light intensity
Others
T-6-1
T-6-2
T-6-3
T-6-4
main scanning direction
sub scanning direction
APC
laser activation/deactivation*1 (exposes "light" areas)
laser scanner motor
laser shutter
Chapter 6
0010-8009
6-1