Canon NP6251 Service Manual page 87

CHAPTER 3 EXPOSURE SYSTEM
b. Stream Reading with the RDF in Use
1
2
Scanner
Originals are placed.
The RDF sends the image leading edge
signal to the copier when the leading
edge of the 2nd original moves right
next to the scanner. In response, the
copier turns on the registration clutch so
that the original and the copy paper are
matched.
By this time, the 1st original has been
picked up and is following the 2nd
original.
1
The 1st original is illuminated while
moving over the scanner.
The 2nd original is delivered from the
left.
3-12
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Originals
RDF
Copier
2
Figure 3-305
CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
1
The Copy Start key is pressed. The 2nd
original is picked up from the right. The
scanner moves to the center of the
copyboard, and is locked in place by the
scanner locking solenoid.
2 1
The 2nd original is illuminated while it is
moved over the scanner.
Then, the RDF sends the image leading
edge signal for the 1st original.
1
2
The scanner returns to home position.
The 1st original is delivered from the
left.