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OPERATIONS AND TIMING
COPYRIGHT
©
1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
C. Scanner Drive System
1. Outline
The scanner drive system is driven by the scanner
motor (M2). The scanner motor changes the direction
of its rotation, and its speed changes when moving
the scanner forward to suit the selected reproduction
ratio. However, its speed when moving the scanner
in reverse remains constant (2.5 times as fast as
when moving the scanner forward) regardless of
the selected reproduction ratio.
The distance traveled by the scanner varies
depending on the length of the copy paper and the
selected reproduction ratio.
Figure 3-205
SCA
SCA*
SCB
SCB*
DC controller PCB
No. 2 mirror mount
No. 1 mirror mount
Forward
Light-blocking plate
Scanner home position detection signal (SCHP)
Scanner home position sensor (PS1)