G. Controlling Blank Exposure
1. Outline
The copier executes blank exposure by shining the light of the pre-exposure lamp
against the size blanking reflecting plate and the full blanking reflecting plate. The area
of blanking exposure is controlled by one opening/closing shutter and slide shutter.
Figure 4-111
4-14
CHAPTER 4 IMAGE FORMATION SYSTEM
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
DC controller PCB
Pre-exposure lamp
Open / Close shutter
Blank
shutter
solenoid
(SL5)
Blank shutter
motor
M8
Slide shutter (rear)
Size blanking reflecting plate
Total blanking reflecting plate
Slide shutter (front)
Blank shutter
home position
sensor(PS20)
Blank shutter
solenoid drive command (BLSD
*
)
Blank shutter
home position
signal (BLHP)
Содержание NP6330
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