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COPYRIGHT
©
1999 CANON INC. CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
7-33
CHAPTER 7 PICK-UP/FEEDING SYSTEM
2. Operations
The horizontal registration sensor moves to the start position (A4 detection position) when the
main power switch is turned on or the front cover is closed, and moves to a detection position to suit
the size of paper expected in the lower feeding assembly. Its position of detection is "paper width +
2 mm."
The paper detection mechanism starts when paper moved to the lower feeding assembly has
moved past the confluence sensor (PI 15) and has been moved over a specific distance (about 10
mm past the horizontal registration sensor).
The position of paper is detected with reference to the start position and by finding out the
difference between the start position and the actual paper position from the number of drive pulses
(1 pulse = about 0.16 mm) of the motor.
Figure 7-408 Horizontal Registration Detection
Main power switch ON
Duplexing reversal
motor (M11)
Horizontal registration
motor (M15)
Horizontal registration
sensor (PS18)
Post-confluence
sensor (PS15)
Lower feeding middle
clutch (CL16)
Lower feeding rear
clutch (CL17)
: moves to the rear.
: moves to the front.
Home position
Start position
Start position + 2 mm
Paper about 10 mm from the
registration sensor.
Start position
detection
Paper position detection
Paper position detection