Laser On/Off Control - Canon imageRUNNER ADVANCE C255 Series Service Manual

■ 1-Polygon, 4-Laser Method
This method uses one Scanner Motor and four laser diodes to perform laser scanning. Four lasers can be scanned on the
multifaceted mirror on one Scanner Motor, thereby realizing space-saving.
The following shows an outline drawing of the Laser Scanner Unit.
[4]
[1]
[3]
No.
[1] Reflection Mirror
[2] Polygon Mirror

Laser ON/OFF Control

Purpose
Turns the laser beam ON and OFF according to the combination of laser control signals.
Execution timing
After turning ON the power
Control description
The DC Controller PCB switches between four modes (Forced OFF mode, APC mode, Print mode, and Standby mode) based
on the laser control signals.
Name
[2]
No.
[3] Imaging Lens
[4] Y/M/C/Bk Laser Driver PCB
45
2. Technology
[1]
[3]
Name