Canon DADF-B1 Service Manual page 62

Reference:
At time of a jam, the copier remembers how may originals it has copied, and sends the
information to the ADF controller upon removal of the jam.
In response, the ADF controller circulates the originals that have been copied already, and
places the originals that have not been copied on the copyboard for copying. For this reason,
normal copying operation would not be possible if the number of originals after removal of
jams differs from the number of originals before the jam.
In the case of [1] in the following diagram, the ADF and the copier will stop to operate, treating
the condition as a "different numbers of originals." Keep in mind, however that, in the case of
[2], normal operation will continue.
10 originals are placed
on the original tray.
1. Resetting
To reset in response to wrong placement of originals, remove all originals from the original tray,
and place them back again. The copier will indicate a message; follow the instructions.
COPYRIGHT © 1999 CANON INC. CANON DADF-B1 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
The 8th
original jams.
(7 originals have been
copied)
10 (originals) - 7 (originals that have been copied) = 3 originals
The 3rd
original jams.
(2 originals have been 10 (originals) - 2 (originals that have been copied) = 8 originals
copied.)
Figure 2-280
CHAPTER 2 BASIC OPERATION
The originals are put
back into order, and
placed on the original
tray (10 originals).
3 originals are set
on the original tray.
8 originals are placed
on the original tray.
The first 7 originals (which
have been copied) are count-
ed, and copying starts with
the 8th original.
The number of operations
are counted, and the ADF
is stopped.
The originals are counted,
and then copying starts with
the 2nd original.
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