Laser Exposure System; Overview - Canon imageRUNNER ADVANCE 4551i Service Manual

Laser Exposure System

Overview

■ Specifications
Item
Wave length
Laser type
Laser output
Number of laser beams
Resolution
Motor type
Motor revolutions
Number of Scanner Mirror facets
■ Main Configuration Parts
Laser Unit
Laser Unit
Polygon mirror
BD mirror
BD PCB
■ Control System Configuration
Controls for the laser exposure system are mainly performed by the DC controller PCB.
51 ppm machine : 787 to 800nm
45/35 ppm machine : 787 to 800nm
25 ppm machine : 785nm to 800nm
Infrared laser (invisible)
51 ppm machine : 10mW
45/35 ppm machine : 10mW
25 ppm machine : 5mW
51 ppm machine : 4 beams/lines
45/35 ppm machine : 4 beams/lines
25 ppm machine : 2 beams/lines
1200dpi
Brushless motor
51 ppm machine : approx 27000 rpm
45/35 ppm machine : approx 16000 rpm
25 ppm machine : approx 32000 rpm
6 facets (40 mm dia.)
BD mirror
Polygon mirror
Name
Description
BD PCB
Emits laser
Scans the laser light in the main scanning direction
Reflects the laser light in the BD PCB direction
Generates the BD signa
83
2. Technology
Function