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CHAPTER 2
Fixing and Delivery Unit
D.
1. outline
The
upper/lower rollers of the fixing unit
and the delivery rollers are driven by the
main motor (Ml). The upper roller Is
by a
heated
fixing roller heater [Hl: 750
The upper roller surface temperature is
detected by a thermistor (THlI. As the
s u r f a c e t e m p e r a t u r e i n c r e a s e s , t h e
r e s i s t a n c e o f t h e t h e r m i s t o r (THl)
decreases, and the voltage of the FIXING
ROLLER SURFACE TEMPERATURE signal
According to the voltage of the FSRTH
signal, the microprocessor (CPU) on the DC
controller makes the FIXING ROLLER
HEATER DRIVE signal [/FSRD) "H" or "I/
to set the upper roller surface temperature
to the appropriate value.
The target temperatures of the upper
PRINT state are listed in Table 2-4.
Connecter circuit
WAIT, STANDBY, and
DC controller PCB
-1
Power supply
_ _
_ _ _ _ _ _ _ _ _ _ _ _ _
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