Construction; Specifications, Control Mechanism, And Functions; Major Components; Construction Of The Control System - Canon iR3570 Service Manual

6.1 Construction

6.1.1 Specifications, Control Mechanism, and Functions

iR2270 / iR2870 / iR3570 / iR4570 / iR2230 / / / iR3530 /
Laser Light
Scanner Motor
Type of motor
Number of revolutions
Type of bearing
Polygon Mirror
Control Mechanism
Synchronous control
Light intensity control
Others

6.1.2 Major Components

iR2270 / iR2870 / iR3570 / iR4570 / iR2230 / / / iR3530 /
Name
[1] Laser unit
[2] Polygon mirror
[3] BD mirror
[4] BD PCB

6.1.3 Construction of the Control System

iR2270 / iR2870 / iR3570 / iR4570 / iR2230 / / / iR3530 /
The laser exposure system is primarily controlled by the DC controller PCB.
iR2270/2270F/2870/2870F/2230/2230F/2830
Number of laser beams
Output
Wave length
DC brushless motor
16000 rpm (approx.; single control)
(iR2270/2870/2230/2830)
27000 rpm/16000 rpm (approx.; double control)
(iR3570/4570/3530)
Oil
Number of facets
[1] [3]
[2]
Description
Generates laser light
Scans laser light in main scanning direction.
Reflects laser light in the direction of the BD PCB.
Generates the BD signal.
T-6-1
2
5mW (iR2270/2870/2230/2830)
10mW (iR3570/4570/3530)
785 nm - 800 nm (infrared light)
T-6-2
T-6-3
6 (40-mm dia.)
T-6-4
Main scanning direction
APC
Laser activation/deactivation
Laser scanner motor control
Laser shutter control
[4]
F-6-1
T-6-5
Chapter 6
0006-9404
0006-5970
0006-5971
6-1