COPYRIGHT © 2002 CANON INC.
2000 2000 2000 2000
CANON iR1200/iR1300 Series REV. 0 AUG. 2002
4-17
CHAPTER 4 OPERATION
5 Pickup/Feeding/Delivery System
5.1 Outline
The machine is not equipped with a paper width detection mechanism. It uses center ref-
erence, in which paper moves centered through the pickup/feeding/delivery path.
The source of paper may be from any of two: cassette and manual feed tray. Once picked
from the cassette or the manual feed tray, the paper is corrected so that any skew is removed
by the registration shutter and is sent as far as the registration roller. Thereafter, the paper is
controlled so that its leading edge matches the leading edge of the image on the photosensi-
tive drum by means of the paper leading edge sensor (PS102); it then is moved through the
transfer, separation, feeding, and fixing assemblies to reach the delivery tray.
The machine is equipped with 5 sensors to monitor the movement of paper; the names
and the functions of these sensors are as follows:
Notation
PS3
PS4
PS101
PS102
PS103
Name
Delivery sensor
Manual feed tray paper sensor
LGL paper sensor
Paper leading edge sensor
Cassette paper sensor
Function
Detects the state of paper in the delivery assembly.
Detects the presence/absence of paper in the manual
feed tray.
Detects paper inside the cassette to see if it is of LGL
size.
Detects the leading edge and trailing edge of paper to
measure its length. Also, it controls the timing of acti-
vation of the laser.
Detects the presence/absence of paper in the cassette.
T04-501-01
PS4
PS102
PS103
PS3
PS101
F04-501-01