Detecting The Level Of Copy Paper - Canon GP215 Service Manual

D. Detecting the Level of Copy Paper
The machine checks the level of copy paper inside the cassette and indicates the level in four degrees.
The level of copy paper inside the cassette is checked in reference to the up movement of the lifter noted
when the light-blocking plate blocks the appropriate sensor.
When copy paper starts to run out, the lifter rises gradually;when paper fully runs out, the cassette
paper sensor (Q1604 for upper) detects the absence of paper.
Lifter
condition
Gear an
level sensor
Figure 3-621 Detecting the Level of Paper inside the Cassette (upper)
COPYRIGHT © 1996 CANON INC.
Light-blocking plate
Figure 3-620
Full of copy paper
Pick-up roller
Copy paper
Lifter
Q1607
Q1606
(upper cassette)
CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
3. OPERATIONS AND TIMING
Lifter
Out of cop paper
Pick-up roller
Gear when the cassette is full of
copy paper
Copy paper
Lifter
Light blocking
plate
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