Detecting Originals; Outline - Canon DADF-J1 Service Manual

CHAPTER 2 OPERATIONS AND TIMING

2.3 Detecting Originals

2.3.1 Outline

The DADF is equipped with the following five types of mechanisms of detection:
Item
Presence/absence of an
original
Original size 1
Original size 2
Pre-last original
Original in manual
feeder
2-16
Description
Identifies the presence/absence of an
original on the original tray.
Identifies the size of the original
placed in the original tray (as to be-
ing large-size or small-size).
Identifies the size of an original on
the move (default size).
Identifies the original in the original
tray as being the last original or not.
Detects the presence/absence of an
original in the manual feeder.
S6
(light-emitting side)
S6
(light-receiving side)
COPYRIGHT © 2001 CANON INC.
Original sensor (S6)
Original trailing edge sensor (S7)
Registration roller clock sensor (PI5)
Pre-last original sensor (S8)
Manual feeder set sensor (PI12)
T02-203-01
PI12
S7
SW301
S8
PI5
F02-203-01
2000 2000 2000 2000
Sensor used (notation)
CANON DADF-J1 REV.0 MAR.2001