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2001 CANON INC. 2000 2000 2000 2000 CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001
CHAPTER 5 PICK-UP/FEEDING SYSTEM
5-34 P
7.3.2 Operation
1) Timing of Detecting Home Position
When the main power switch is turned on, During jam recovery, When the front cover is
closed
2) Start Position
The detection start position is set at a point about 10 mm from the edge of paper whose
movement is ideal with reference to the data on the paper width collected from the slide
guide on the manual feed tray and the cassette size when the registration sensor goes ON.
3) Detectiong operation
When paper fed to the duplex feeding assembly reaches the registration roller, the hori-
zontal registration motor (M3) goes ON, and the duplex horizontal registration sensor
(PS11) starts paper edge detection. The detection takes place for each time a double-sided
print is made.
The detection of paper position is done with reference to the start position, and the dis-
placement from the actual paper position is identified with reference to the drive pulses from
the motor (1 pulse = about 0.16 mm).
*1: the position of the edge of paper differs depending on the size of paper, hence different SP.
HP: start position of the duplex horizontal sensor.
SP: detection start position of the duplex horizontal registration sensor.
F05-703-02
INTR/STBY
PRINT
H.P
S.P
*1
Registration motor
(M9)
Registration sensor
(PS10)
Duplex horizontal
registration motor(M3)
Duplex horizontal
registration sensor(PS11)
Duplex horizontal
registration sensor
(PS11) position
Paper edge
Main power switch ON
Reverse Reverse
Forward
Forward
10 mm(approx.)