Canon iR2318 series, Service Manual, Page: 120 / 308

Chapter 4
4-14
- Horizontal scan direction: Reflection type photo sensors (2 locations for AB; 2 locations for Inch)
F-4-16
4.3.4.2 Outline of Original Size Detection
0020-4238
- In the BOOK mode
One sheet of original (A4R) is set and the copyboard cover (or ADF ) is closed.
1) Standby state
Original sensor: Turns off.
F-4-17
2) The copyboard cover opens (at an angle of more than 30o).
Original sensor: Turns off.
F-4-18
3) The copyboard cover is closed (at an angle of 30 deg).
Original sensor: Turns on and original size identification process 1 is performed.
B5
A4R
A4
STMT-R
LTR-R
LTR 11" 17"
LGL
B5R
Index plate
Original sensor 3
B4
A3
AB-Configration
Inch-Configration
Original sensor 5
Upper left corner
of original
Upper left corner
of original
V
e
rtical scan direction
V
e
rtical scan direction
Horizontal scan direction
Horizontal scan direction
Original sensor 1
Original sensor 2
Original sensor 4
Original sensor 3
Original sensor 1
Reader unit
Copyboard cover
Original sensor 3
Copyboard glass
Original sensor 4
Original sensor 2
Original sensor 1
Original sensor 3
Original sensor 4
Original sensor 2
Original sensor 1