III. SCANNER DRIVE MECHANISM
A. Driving the Scanner
1. Outline
The scanner is driven by the scanning motor (M2). The scanning motor changes its
direction of rotation to move the scanner forward and in reverse. The speed of rotation
when moving the scanner forward varies continuously according to the selected
reproduction ratio; however, the speed of rotation when moving the scanner in reverse
remains a specific value (about 2.7 times when moving the scanner forward) regardless
of the selected reproduction ratio.
The distance over which the scanner travels varies according to the length of copy
paper and the reproduction ratio.
Figure 3-301
3-6
CHAPTER 3 EXPOSURE SYSTEM
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
Scanning motor (M2)
Forward
No. 1 mirror mount
Signal plate
Reverse
No. 2 mirror mount
Scanner home position
sensor (PS1)
Scanner home position
signal (SCHP)
Scanning motor drive command
DC controller PCB
Motor driver 1 PCB
Содержание NP6330
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