Canon FY8-13FW-000DADF-A1 Service Manual page 30

CHAPTER 2 BASIC OPERATION
c. Original Count Detection
The machine need not count originals
when making single-sided copies of single-
sided originals, signal-sided originals of
double-sided originals, or double-sided copies
of double-sided originals; as such, it merely
feeds the originals on the original tray in
sequence.
When making double-sided copies of
signal-sided originals, however, the machine
must find out whether there is an odd or even
number of originals.
Holding the copier from making copies,
the DADF picks up and delivers the originals to
find out how many there are.
Reference:
The machine can pick up the last page of
originals first. When making double-
sided copies of single-sided originals, it
must decide whether the last page must be
on the face or back of a sheet (odd or even
page).
Figure 2-212 shows what would happen
if an odd number originals were fed
without control. (The first page would be
copied on the back of a sheet.)
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Figure 2-212
On some copiers, you can disable original
count operation in user mode.
2-16
COPYRIGHT © 1998 CANON INC.
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Copier
CANON DADF-A1 REV.0 DEC. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)