Canon imageRUNNER 2525 Series Service Manual page 40

● Outline of Original Size Detection
• 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.
2. The copyboard cover opens (at an angle of more than 30 deg).
Original sensor: Turns off.
AB-Configration
Horizontal scan direction
Upper left corner
of original
Original sensor 0
Original sensor 1
Inch-Configration
Horizontal scan direction
Upper left corner
of original
Original sensor 0
Copyboard cover
Reader unit
Index plate
Original sensor 3
Original sensor 2A
B5R
A4R
B5 B4
A4
Index plate
Original sensor 3
Original sensor 2B
STMT-R
LTR-R LGL
LTR 11"×17"
Original sensor 3
Original sensor 2A
Copyboard glass
Original sensor 0
Original sensor 1
Original sensor 3
Original sensor 2A
Original sensor 0
Original sensor 1
30
2. Technical Explanation
A3