Fixing/Delivery Assembly - Canon FC310 Service Manual

SOPERATIONS AND TIMING
©. Fixing/Delivery Assembly
1. Qutline
The drive roller in the fixing assembly is The rear end of the fixing heater is also
driven by the main motor (M1). equipped with a thermistor (TH2) to check
The rotation of the drive roller causes overheating.
the fixing film and then the pressure roller to
rotate. Drive rolter
Some sections of the underside of the
fixing film is heated by the fixing heater.
The temperature of the fixing heater is
_monitored by the thermistor (TH1), and the
readings are sent to the microprocessor on
the DC controller/DC power supply circuit in
the form of the fixing heater temperature
sensor signal (TH1).
Based on the signal, the microprocessor
of the DC controller/DC power supply circuit
controls the temperature of the fixing heater Figure 3-31
by the fixing heater drive command (HTRD).
— —=(Mi) Main motor
Thermistor
Fixing film
Fixing heater
Delivery roller Pressure roller
Relay drive command
(RELAYD)
Fixing heater
overheating
Vy sensor circuit
Fixing heater
end temperature
nsor
Thermal fuse
(226°C) FU1
Fixing heater
H14
Microprocessor
UUUUUUT
3-36 COPYRIGHT © 1992 CANON INC. CANON FC310/330 REV.0 SEPT. 102 PRINTED IN JAPAN (IMPRIME AU JAPON)