Canon imageRUNNER 330 Service Manual page 189

CHAPTER 7 PICK-UP/FEEDING SYSTEM
4. Detecting the Point of Horizontal Registration
a. Outline
• Paper is picked up from the lower feeding assembly without positioning it in the rear/front
direction, requiring detection of displacement while it is being moved. To this end, paper is
checked for horizontal registration when it is moved from the lower feeding assembly.
• The rear/front registration detection mechanism is located near the vertical path roller
assembly, and consists of a horizontal registration sensor (PS10) and a horizontal
registration shift motor (M9).
• The horizontal registration sensor shift motor (M9) is used to move the horizontal
resignation sensor (PS10), and it detects the edge of paper for synchronization with the
point of laser exposure.
M9
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COPYRIGHT © 1999 CANON INC. CANON imageRUNNER 400/330 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Copy paper
10 mm (approx..)
Detection start position
Home position
Figure 7-132
PS10