Canon CLC 1120 Service Manual page 241

PICK-UP / FEEDING SYSTEM
This chapter explains the operations and functions of the copier's pickup/delivery system and
the relationship between electrical and mechanical systems, and provides an outline of the timing
at which various associated parts are driven.
I. OPERATIONS .............................7-1
A. Outline ....................................7-1
B. Arrangement of Rollers
and Sensors ...........................7-2
II. PICKUP ASSEMBLY ...................7-5
A. Pickup from the Cassette .......7-5
B. Lifter Movement .....................7-9
C. Detecting the Paper Size
Inside the Cassette ............. 7-11
D. Pickup from the
Multifeeder .......................... 7-15
E. Picking Up
Transparencies .................... 7-19
III. DUPLEXING UNIT
(CLC1150 ONLY) ..................... 7-21
A. Outline ................................. 7-21
B. Stacking Paper .................... 7-24
C. Movement of the Paper
Jogging Guide Plate ........... 7-25
D. Sequence of Operations
(1st side of a
double-sided copy) .............. 7-27
E. Re-Pickup from the
Duplexing Unit ..................... 7-28
IV. CONTROLLING THE
REGISTRATION/ATTRACTION
MECHANISM ........................... 7-30
A. Outline ................................. 7-30
B. Locking and Unlocking the
Registration Roller .............. 7-31
C. Controlling the Attraction
Mechanism .......................... 7-32
D. Sequence of Operations
(registration/attraction) ........ 7-33
V. TRANSFER DRUM .................. 7-34
A. Outline ................................. 7-34
COPYRIGHT © 1999 CANON INC.
CHAPTER 7
CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
B. Controlling the Locking
Cam Inside the Transfer
Drum ................................... 7-36
C. Controlling Separation ........ 7-39
D. Cleaning the Separation
Drum Sheet ......................... 7-41
E. Sequence of Operations
(transfer drum) .................... 7-44
VI. DETECTING JAMS .................. 7-45
A. Outline ................................. 7-45
B. Sequence of Operations
(jam detection) .................... 7-47
VII. DISASSEMBLY/ASSEMBLY
(PICK-UP ASSEMBLY) ............ 7-48
A. Pickup Assembly ................. 7-49
B. Multifeeder .......................... 7-60
C. Duplexing unit ..................... 7-64
D. Pickup Motor Drive
Assembly ............................. 7-72
VIII. DISASSEMBLY/ASSEMBLY
(TRANSFER ASSEMBLY/
DELIVERY ASSEMBLY) .......... 7-73
A. Removing the Transfer Drum
Assembly/Transfer
Drum Frame ........................ 7-74
B. No. 1 Feeding
Assembly ............................. 7-77
C. Transfer Cleaner Unit .......... 7-86
D. Transfer Drum Assembly ..... 7-88
E. Transfer Drum Locking Motor
Assembly ........................... 7-100
F. Transfer Drum Cleaner
Locking Motor Assembly
(PM6) ................................ 7-101
G. Delivery Assembly
(CLC1120/1130 only) ........ 7-101
H. Duplexing Delivery Assembly
(CLC1150 only) ................. 7-102