Detecting The Size Of Originals - Canon imageRUNNER 2530 Service Manual

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Technology > Original Exposure System > Controls > Detecting the Size of Originals

Detecting the Size of Originals

Overview
The original size is identified by the combination of presence and absence of output levels of
the reflection type sensors as summarized in the tables below.
- Absence of paper: The light reflected from the reflection type sensor changes when the
copyboard cover is open/close.
- Presence of paper: The light reflected from the reflection type sensor does not change when
the copyboard cover is open/close.
This machine is provided with the following sensors. Locations of the sensors are shown
below.
- Vertical scan direction: Reflection type photo sensors (2 locations for AB; 1 location for Inch)
- Horizontal scan direction: Reflection type photo sensors (2 locations for AB; 2 locations for
Inch)
2 Technology > Original Exposure System > Controls > Detecting the Size of Originals
AB-Configration
Horizontal scan direction
Upper left corner
Index plate
of original
Original sensor 3
B5R
Original sensor 0
B5
Original sensor 1
A4
Inch-Configration
Horizontal scan direction
Upper left corner
指標板
of original
Original sensor 3
STMT-R
LTR-R
Original sensor 0
LTR
2-10
Original sensor 2A
A4R
B4
A3
Original sensor 2B
LGL
11"×17"
F-2-17 F-2-17
2-10