Canon DU7-1101-000 Service Manual page 63

3] The first original is moved by the feeding belt for a specific length after its leading edge has
moved past the post-registration roller paper sensor (S3), and is stopped (in wait position).
(At this time, measurement is started to find out the distance the first original moves after it has
passed the pre-registration roller paper sensor (S2).)
Pre-registration paper sensor (S2)
Post-registration
paper sensor (S3)
4] The feeding belt is rotated to move the original for a specific length.
When the first original has been moved for a specific length (as determined by the counts issued
after the trailing edge of the original has moved past the pre-registration paper sensor (S2)), the
machine sends the image leading edge signal to the copier.
In response, the copier starts reading the original. At this time, the second original is moved, and
is stopped (in wait position).
Pre-registration roller paper sensor (S2)
COPYRIGHT © 1999 CANON INC.
Wait position
Figure 2-248
2nd original
Figure 2-249
CANON ADF FOR iR600 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 2 OPERATIONS
2-47