Sequence Of Operations (Laser Exposure System) - Canon 1130 Service Manual

CHAPTER 5 LASER EXPOSURE SYSTEM
The major items of control and functions of the laser exposure system are as follows:
1. Laser Exposure System Control
Optimum intensity control to suit the surface potential of the drum
2. Laser Scanning Method
Beam spot scanning
3. Synchronization Control
By the BD signal in main scanning direction
By the ITOP signal in sub scanning direction
4. Laser Scanner Control
Constant rotation speed
B. Sequence of Operations (laser exposure system)
Start key
ON
Photosensitive drum
revolution
Transfer drum revolution
Side A sensor (PS2)
Side B sensor (PS3)
Laser
Laser scanner motor
Figure 5-102 A4/LTR, 2 Copies, Full Color, Direct, Cassette 1
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