COPYRIGHT © 2002 CANON INC. CANON CLC1100/1130/1150/1160/1180 REV.1 FEB. 2002 PRINTED IN JAPAN (IMPRIME AU JAPON)
5-3
CHAPTER 5 LASER EXPOSURE SYSTEM
II.
GENERATING THE BD SIGNAL
The BD signal is used to enable synchronization in main scanning direction, and it is generated
by the BD PCB based on the laser beam reflected by the BD mirror found in the optical path.
The BD signal is used to send video signals from the image processor PCB to the laser
controller PCB. The laser controller PCB is designed to correct video signals, and the laser driver
PCB is used to send out video signals as laser intensity control signals in sequence.
Figure 5-201
E100
The BD signal is not detected within a specific period of time.
Laser
controller
PCB
Video signal
BD
RBD
Laser driver
PCB
Laser unit
8-facet mirror
BD PCB
BD mirror
ON
OFF
Guiding mirror
(front)
Laser
Photosensitive
drum
(rear)
Non-image
area
Image area
(301 mm)
BD signal
Video signal
Image processor PCB
Содержание CLC 1130
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