Canon Shift Tray-D1, Service Manual

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Chapter 2
2-2
2.2 Basic Operation
2.2.1 Shift Movement
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The machine moves the tray to the front and the rear to sort stacks (offset). The tray is driven by a DC motor, and
the rotation of the motor is converted into liner movement by means of a rack and pinion gear mechanism. The
location of the tray (front, rear) is monitored by the HP sensor mounted to the front and the rear.
F-2-3
2.2.2
Placement of Paper
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The machine's tray is held up by the work of a coil spring. When paper is placed, the tray moves down under the
weight of the paper. The height of the stack in the tray is monitored by the tray full sensor (reflection type photo
sensor), and the shift tray driver PCB sends the tray full signal to the host machine when the top of the stack reaches
a specific height.
F-2-4
2.2.3 Detecting the Presence/Absence of Paper
0009-3519
The presence/absence of paper in the tray is detected by the paper sensor mounted to the tray.
Light-blocking plate
HP sensor (rear)
PS102
HP sensor (front)
PS101
Tray drive unit
Room for
more paper
Tray full sensor (rear)
PS104
Tray full sensor (front)
PS105
Shift
Shift
Tray
Room for
more paper
No room
for paper