Detecting The Presence/Absence Of Paper; Detecting The Level Of Paper - Canon 1130 Service Manual

CHAPTER 7 PICK-UP / FEEDING SYSTEM

2. Detecting the Presence/Absence of Paper

The presence/absence of paper inside the cassette is detected by the cassette paper sensor.
Lifter position sensor

3. Detecting the Level of Paper

The copier uses the resistance occurring in the variable resistor operating in conjunction with
the movement of the lifter drive shaft to detect the level of paper inside the cassette. It indicates the
result in four levels (including absence of paper) on its control panel.
7-10
COPYRIGHT © 2002 CANON INC.
Pickup roller
Paper
Paper sensor
Open/closed
sensor
Figure 7-203
Paper level Indication on control panel
100% to
about 50%
About 50% to
about 10%
About 10% or
less
No paper
Figure 7-204
CANON CLC1100/1130/1150/1160/1180 REV.1 FEB. 2002 PRINTED IN JAPAN (IMPRIME AU JAPON)
Feeding rollers
Separation roller
Lifter