Jam Detection
The sensors are provided at the locations shown below to detect the presence of paper and whether the paper is being fed
correctly.
Symbol Name Symbol Name
PS3 TOP Sensor PS5 Fixing Paper Width Sensor
PS4 Fixing Delivery Sensor
Occurrence of a jam is judged by whether paper is in the sensor area at the timings stored in the DC Controller.
When the DC Controller judged the Jam has occurred, printing operation is stopped and the occurrence of the jam is notified to
the Main controller at the same time.
Jam List
Jam name Detail
Pickup stationary Jam The TOP Sensor (PS3) does not detect the back end although a specified period of time has passed after
detection of the leading edge.
Fixing delivery delay Jam The Fixing Delivery Sensor (PS4) does not detect the leading edge although a specified period of time has
passed after the TOP Sensor (PS3) detected the leading edge.
Fixing delivery stationary
Jam
In the case the Fixing Delivery Sensor (PS4) cannot detect the back end although a specified period of time
has passed after the TOP Sensor (PS3) detected the back end.
Internal residual Jam In the case the following sensors detected the presence of paper before/after the power ON, closing the door
and printing operation.
• Top Sensor (PS3)
• Fixing Delivery Sensor (PS4)
• Fixing Paper Width Sensor (PS5)
Door open Jam The door open was detected during printing and feeding paper.
Fixing wrap Jam The time from when the Fixing Delivery Sensor (PS4) detected the paper leading edge until the sensor OFF
status of the sensor was detected was shorter than the predetermined time.
Reverse Assembly Jam In the case that the Fixing Delivery Sensor (PS4) cannot detect the paper leading edge although a specified
period of time has passed after the paper was reversed in 2-sided printing.
Duplex Re-pickup As-
sembly Jam
In the case that the TOP Sensor (PS3) cannot detect the paper leading edge although a specified period of
time has passed after the Fixing Delivery Sensor (PS4) detected the paper leading edge.
2. Technology
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