Canon DADF-M1 Service Manual - page 39
Chapter 2
2-17
F-2-16
2.3 Document Detection
2.3.1 Overview
0002-7374
The machine possesses the following 2 modes of operation to suit different printing modes:
a. normal mode (other than mix of different configurations or extra-length)
T-2-3
Item
Description
Sensor used
(notation)
Presence/absence
of original
checks the presence/absence of an original in the original pickup tray. original placement
sensor
Original size identification
Feed direction
monitors the state of the post-separation sensor (on/off) after the read
sensor goes on to identify the original as being small or large.
post-separation sensor,
read sensor
checks the length of the original placed in the original pickup tray;
identification of LTR and LGL.
LGL sensor
Moving the 1st sheet.
Arching the 2nd sheet.
Turing over the 1st sheet.
Arching the 2nd sheet.
Moving the 1st sheet.
Idly moving the 1st sheet.
(while locking the platen
upstream roller locked in place)
Moving the 2nd sheet.
Delivering the 1st sheet.
Idly moving the 2nd sheet.