Canon DADF-P1, Руководство по обслуживанию

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Chapter 2
2-5
F-2-7
2.3.4 Initial Document Size Detection
0010-3901
The document length sensor 1 (PI4) and document length detection sensor 2 (PI5) detect the longitudinal size of the document placed on the document tray, and
the document width sensor 1 (PI2) and document width sensor 2 (PI1) detect the lateral size of the document.
When an document is placed on the document tray, detection levers of the two document length sensors move the light shielding plate to allow light pass through
the photo interrupter.
If the slide guide is adjusted to the document size, the two document width sensors mounted inside the document tray are shielded by the light shielding plate mount-
ed at the bottom of the slide guide.
Document sizes are determined by the combination of the ON/OFF states of document length sensors and the combination of ON/OFF states of document width
sensors.
F-2-8
The following tables show the relationships among document width sensors, document length sensors, and document sizes.
1. AB type
T-2-5
2. Inch type
Sensor name
Document width
sensor 1
Document width
sensor 2
Document length
sensor 1
Document length
sensor 2
Size
A3 ON ON ON ON
B4 OFF ON ON ON
A4R OFF OFF ON OFF
B5R ON OFF ON OFF
A4 ON ON OFF OFF
A5R ON OFF OFF OFF
B5 OFF ON OFF OFF
A5 OFF OFF OFF OFF
B6 ON OFF OFF OFF
ADF driver PCB
Document
Detection
lever
LAST EMPTY
PI11
PI3
PI5
PI4
PI1
PI2