Various Controls - Canon imageRUNNER ADVANCE C5255 Series Service Manual

2
Technology > Laser Exposure System > Various Controls > Overview

Various Controls

■ Overview
Item
Laser ON / OFF control Laser light is turned ON / OFF according to the combination of
laser control signal
Horizontal scanning To align the writing start position in horizontal scanning direction.
synchronous control
Vertical scanning synchronous To align the writing start position in vertical scanning direction.
control
APC control To make the laser light per 1 line consistent amount.
Laser Scanner Motor Control To rotate the scanner mirror by the specified speed.
BD correction control To correct the gap BD timing gap due to the angle variation of
Scanner Mirror.
Laser shutter control To prevent the laser light from being emitted to the machine inside.
Image tilt correction control To correct the image tilt in vertical scanning direction (this control
is operated based on the result of color displacement correction
control).
2 Technology > Laser Exposure System > Various Controls > Overview
Operation description
T-2-23
DC Controller (UN1)
Laser ON/OFF control
Horizontal scanning
synchronous control
Vertical scanning
synchronous control
APC control
Main
Controller
Laser scanner motor control
Laser shutter control
BD correction control
Image tilt correction control
2-33
Laser Driver PCB
Laser Driver PCB
Scanner Motor
Laser Scanner Unit 1
Laser Driver PCB
Laser Driver PCB
Scanner Motor
Laser Scanner Unit 2
F-2-47
2-33