2-16
COPYRIGHT © 1999 CANON INC.
CANON ADF FOR iR600 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 2 OPERATIONS
Small size
A5, A4, B5, STMT, LTR
Large size
A4R, B5R, A3, B4, LTRR, LGL, 279.4×431.8mm (11"×17")
Table 2-204
3.
Original Size Detection 1
The function referred to as "original detection 1" relies on the original trailing edge sensor (S7).
The original trailing edge sensor serves to identify whether the original on the original tray is a
small- or large-size original. When the original covers the original trailing edge sensor, the light from
the LED of the original trailing edge sensor is reflected by the original to hit the photo transistor,
causing the machine to assume that the original is a large-size original.
The machine then sends original size information (large- or small-size) to the copier, which in
turn determines the stop position for the scanner in preparation for stream reading.
Figure 2-210
ADF controller PCB
ADF controller PCB
If the original is identified
as being large-size,
If the original is identified as being
small-size,
ADF controller PCB
Light is reflected.
Light is not reflected.
S7
S7
S7
Original
Original
T
AILS