Canon NP6012F - Scanner Drive System

C. Scanner Drive System
1. Outline
The scanner drive system is driven by the scanner motor (M2), which changes its direction
of rotation so that the scanner moves forward or in reverse. The revolution at which the scanner
is moved forward changes continuously according to the selected reproduction ratio, and the
revolution at which the scanner is moved in reverse remains constant regardless of the select-
ed reproduction ratio (about 3.4 times as fast as in forward in DIRECT).
The distance over which the scanner travels varies according to the length
of copy paper
and the selected reproduction ratio.
The scanner motor drives the lens drive system in addition to the scanner system.
Scanner home
position sensor (PSI)
Figure 3-204
Motor driver circuit
DC controller PC6
3-14
COPYRIGHT 0 19% CANONINC.
CANON NP60121NP6012FINP6212 REV.1 SEPT.1995 PRlNTEDINJAPAN(IMPRIM~AUJAPON)