Lens Drive Mechanism; Moving The Lens; Outline - Canon NP6045 Service Manual

CHAPTER 3 EXPOSURE SYSTEM
II. LENS DRIVE MECHANISM
A. Moving the Lens
1.

Outline

The copier picks up and feeds copy paper using center reference; originals, on the
other hand, are placed using rear reference when the copyboard cover is used.
As such, the lens is moved in Y direction (vertical) to suit the width of copy paper
even in Direct mode.
Using the Copyboard
The RDF installed to the copier uses center reference; for this reason, the lens is not
moved in Y direction (vertical) as long as the original and the copy paper are of the same
size and copies are made in Direct (Figure 3-202). However, if the size of the original
and the size of the copy paper are different, the lens is moved in Y direction (vertical) so
that the images on the copies will be processed in the same way as when using the
copyboard cover.
With RDF in Use
3-2
COPYRIGHT © 1997 CANON INC.
Lens position (Direct) for
copy paper (small)
Original
(small)
Original
(large)
Lens position (Direct) for
copy paper (large)
Figure 3-201 (top view)
Lens
Original
(large)
Original
(small)
Figure 3-202 (top view)
CANON NP6045 REV. 1 MAR. 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
Copy paper
(large)
Copy
paper
(small)
Copy paper
(large)
Copy
paper
(small)