Canon GP200 Service Manual page 168

3. OPERATIONS AND TIMING
3. Rear/Front Registration
a. Outline
• The sheets of copy paper in the lower feeding assembly are picked up without alignment for rear/front
direction, requiring detecting of a rear/front displacement while being fed. The rear/front registration
detection mechanism is used for sheets picked from the lower feeding assembly.
• The rear/front registration detecting assembly is located near the vertical path roller assembly and con-
sists of the horizontal registration sensor (PS14) and the horizontal registration motor (M9).
• The horizontal registration motor (M9) is used to drive the horizontal registration sensor (PS14); the
movement of the horizontal registration sensor is used to detect the edge of paper, and the result is
used to determine the position of laser exposure.
M9
3–114
COPYRIGHT © 1996 CANON INC.
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Copy paper
10mm(approx.)
Detection start position
Home position
Figure 3-634
CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
PS14