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Major parts configuration
control.
Part name
Function / method
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Film unit
Applying heat and pressure makes the toner image on paper fixed (fused).
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Pressure roller
H1/H2
Fixing heater
Ceramic heater
TH3
Main thermistor
To be in contact with the heater
Temperature control, detection of abnormal temperature rise
TH2
Sub thermistor (front)
To be in contact with the heater (non-feeding area)
Temperature control, detection of abnormal temperature rise, temperature detection/cooling control on the edges
TH1
Sub thermistor (rear)
To be in contact with the heater (non-feeding area)
Temperature control, detection of abnormal temperature rise, temperature detection/cooling control on the edges
TP1
Thermo Switch
Non-contact type with the heater
To block AC electric power supply when a failure is detected.
S19
Fixing outlet sensor
Jam detection