Brother International HL 1850 Service Manual - Page 102
thermistor
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CHAPTER 3 THEORY OF OPERATION 2.6.5 Fixing stage The image transferred to the paper by static electricity is fixed by heat and pressure when passing through the heat roller and the pressure roller in the fixing unit. The thermistor keeps the surface temperature of the heat roller constant by detecting the surface temperature of the heat roller and turning on or off the halogen heater lamp. \ / Thermistor //// First eject roller Heat roller / Fig. 3-34 Pressure roller 3-30
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CHAPTER
3
THEORY
OF
OPERATION
2.6.5
Fixing
stage
The
image
transferred
to
the
paper
by
static
electricity
is
fixed
by
heat
and
pressure
when
passing
through
the
heat
roller
and
the
pressure
roller
in
the
fixing
unit.
The
thermistor
keeps
the
surface
temperature
of
the
heat
roller
constant
by
detecting
the
surface
temperature
of
the
heat
roller
and
turning
on
or
off
the
halogen
heater
lamp.
Thermistor
/
First
eject
roller
/
////
Fig.
3-34
\
Heat
roller
Pressure
roller
3-30