Canon Image Reader-A1 iR5000i Service Manual page 561

4. Outline of Operations
4.1 Shifting
The machine shifts the tray to the front and the rear (over a distance of 55 mm) to sort
(offset) sheets into groups. The tray is driven by a DC motor, and the rotation of the motor is
converted into shifting motions by means of a rack and pinion gears.
The stop position of the tray at the front and the rear is controlled by the HP sensors
mounted to the front and the rear.
Tray drive unit
4.2 Stacking
The machine's tray is supported by coil springs, and the tray moves down under the
weight of the paper deposited on it. The stack is monitored by limit sensors (reflecting type
photosensors); when the stack reaches a specific height, the shift tray driver PCB sends the
FULL signal to the host machine.
Tray
Shaft
COPYRIGHT © 2001 CANON INC.
HP sensor (PS102; rear)
Limit sensor (PS104; rear)
Limit sensor (PS105; front)
Shaft
2000 2000 2000 2000
Light-blocking plate
HP sensor (PS101; front)
F09-401-01
F09-402-01
CANON iR5000i/iR6000i REV.0 JUNE 2001
CHAPTER 9 SHIFT TRAY
Stacking enabled
Stacking enabled
Stacking disabled
9-5 P