CHAPTER 2 FUNCTIONS & OPERATION
5) Eject
This machine is equipped with both a
U-turn path and a straight path. The eject
selection lever is used to switch them.
The eject selection lever is connected
directly to the flapper.
The difference is shown in the following
diagram.
Figure 2-305
6) Sensor
The document sensor is mounted on the
feed slot, and the registration sensor is
mounted behind the registration roller.
The ultrasonic sensor for double feed
detection is mounted in front of the
registration roller.
2. Feed Error Detection
1) Paper Jam Detection
Paper jams are detected by the
registration sensor. The types of the
document jams are described as follows.
a) Pickup Delay Jam (Pickup Error)
The leading edge of the document
was not detected by the registration
sensor within the specified time after
the machine starts scanning.
a. U-turn path
b) Early Reach Jam
The leading edge of the following
document was detected after the
trailing edge of the document was
detected by the registration sensor
before the document has been fed for
a specified length.
c) Residual Jam
The trailing edge of the document
was not detected even though the
document has been fed for the
maximum specified length after the
leading edge of the document was
detected by the registration sensor.
d) Fast Feed Jam
The trailing edge of the document
was detected after the leading edge
of the document was detected by the
registration sensor before the
document has been fed for the
minimum specified length.
e) Non-removal Jam
The machine starts scanning while
the document is detected by the
registration sensor and still remains
inside this machine.
Eject selection lever
Flapper
b. Straight path
Straight path
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CANON ELECTRONICS INC. 2011 CANON DR-C125 FIRST EDITION
2-11