Controlling The Registration Clutch - Canon NP6251 Service Manual

V. CONTROLLING THE REGISTRATION CLUTCH
The registration clutch controls copy paper so that it matches the image on the
photosensitive drum at a specific position.
In non-binding mode, the registration clutch exerts control so that the leading edge
of copy paper matches the leading edge of the image.
In binding mode, control will be as shown in Figure 5-501 so as to create a leading
edge width on copies.
Selected mode
One-sided original to One-sided copy
One-sided
Copying on 1st side
original to Two-
Copying on 2nd side
sided copy
Two-sided
Copying on 1st side
original to Two-
Copying on 2nd side
sided copy
Two-sided
Copying on 1st side
original to One-
Copying on 2nd side
sided copy
Copying on 1st side
Page separation
(one-sided
Coping on 2nd side
copying)
Copying on 1st side
Page separation
to Two-sided
Coping on 2nd side
copy
One-sided
Copying on 1st side
original to
Copying on 2nd side
Overlay copy
Two-sided
Copying on 1st side
original to
Copying on 2nd side
Overlay copy
Copying on 1st side
Page separation
to Overly
Coping on 2nd side
copying
Copy paper
Drum
A
Copy paper ahead of
image on drum
COPYRIGHT © 1997 CANON INC.
Copy paper
control timing
B
A
B
A
B
B
B
B
(left)
B
(right)
A
(left)
B
(right)
B
B
B
B
B
(left)
B
(right)
Image area
when copying
on 1st side
Image on drum
Copy paper
Figure 5-501
CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 5 PICK-UP/FEEDING SYSTEM
Shift (mm) Copy paper on copy tray
0 to 20 mm;
the diagrams
assume a
shift set to 5
mm.
Image area D Image area : Erase by blanking
when copying
on 2nd side
Drum
B
Copy paper behind image
on drum
D 5
5
D
5or
0
5
D
5
5
D
D 5or
0
D 5
D 5
5
D
5
D 5
D 5
D 5
exposure lamp
Image on drum
Copy paper
5-23