Canon CLC 1120, Service Manual

Page: 243 / 901

COPYRIGHT © 1999 CANON INC. CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
7-1
CHAPTER 7 PICK-UP / FEEDING SYSTEM
I. OPERATIONS
A. Outline
The copier’s pickup system is equipped with the sources of copy paper shown in Table 7-101,
and it uses a center reference method, in which copy paper is moved in the center of the pickup/
feeding path.
Model Construction
CLC1120 Multifeeder + Cassette 1 + Cassette 2
CLC1130 Multifeeder + Cassette 1 + Cassette 2 + Cassette 3
CLC1150 Multifeeder1 + Duplexing unit1 + Cassette 1 + Cassette 2
Table 7-101 Sources of Copy Paper
Copy paper fed from the multifeeder is moved to the registration roller. When the registration
roller starts to rotate, the attraction charging assembly turns on to keep the copy paper on the
transfer drum.
The toner image on the photosensitive drum is transferred to the copy paper in this condition;
i.e., copy paper is rotated a maximum of four times while it is on the transfer drum.
In the case of small-size copy paper (182 to 216 mm long in feeding direction), two sheets are
kept on the transfer sheet to speed up copying speed.
When transfer ends, the copy paper is moved through the separation, feeding, and fixing
assemblies and then to the copy tray.
Figure 7-101 is a diagram of the copier’s paper path.
The CLC1120’s pickup system is identical to that of the CLC1130, except that it does not have
the cassette 3. Refer to the construction of the CLC1130.