Pickup Tray Elevation - Canon imageFORMULA DR-X10C Service Manual

2. Pickup Tray Elevation

The maximum loading capacity of this
machine is 500 sheets of ordinary copy paper.
If the standby position of the pickup tray is at
the lower position suitable for the maximum
loading capacity, waiting time until the pickup
tray rises to the pickup position increases
when a few documents are scanned.
A function that can set the standby posi-
tion to 3 levels (up, middle, down) according
to the number of documents to be scanned
Elevating guide
(left)
Pickup tray
Then, an oblique perspective figure of the
tray position detection section is shown below
and this section describes how to set the
standby position in 3 levels. One LED
3 light-receiving elements
on the tray detection PCB
5 that sends light from the LED to the
light-receiving element is assembled on the
pickup tray 4 . The LED is at the same height
as the lower light-receiving element. The
lower light-receiving element is designed for
detecting the tray position and documents,
and others are designed for detecting docu-
ments.
When the pickup tray is at the lower po-
sition, light from the LED is detected by the
COPYRIGHT © CANON ELECTRONICS INC. 2008
Tray elevation drive section
Drive shaft
Tray detection PCB
Figure 2-301
2 and
3 are mounted
1 . The light guide
CANON DR-X10C FIRST EDITION
CHAPTER 2 FUNCTION & OPERATION
has been added.
An oblique perspective figure of the tray
elevation drive section is shown below and
this section describes the elevation operation.
First, the drive shaft
motor 1 . When the drive shaft rotates, the
right and left elevating guides
down. Since the right and left elevating guides
are mounted on the pickup tray
tray goes up and down.
Tray motor
Retard roller drive section
lower light-receiving element through the light
guide. This position is the home position of the
pickup tray. The middle and upper positions
are controlled with the number of input pulses
of the tray motor based on the home position.
Light-
receiving
element
Light guide
2 is rotated by the tray
3 go up and
4 , the pickup
Elevating guide (right)
Tray position detection section
LED
Tray detection
PCB
Pickup tray
Figure 2-302
2-15