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2.6.2 Fuser unit component
The Fuser unit includes the following components:
1. Center heater lamp (LAMP1) / Side heater lamp (L
These halogen lamps heat the heat roller. The cente
(LAMP2) are lit alternately to heat the heat roller. Ea
coil of the center heater lamp (LAMP1) is in the cente
sides. The heater lamps are fixed inside of the heat
2. Heat roller
The heat roller is a steel roller which conducts heat g
heat roller in this equipment is a thin roller which enh
time is shortened.
3. Fuser belt
The fuser belt couples the heat roller with the fuser ro
The fuser belt couples the heat roller with the fuser ro
roller and paper. The thin fuser belt reduces warmin
fuser belt from adhering to the toner, the surface of th
4. Fuser roller
The fuser roller is pressed against the pressure roller
between the fuser roller and pressure roller, the heat
belts easier. The melted toner is soaked into the pap
belts easier The melted toner is soaked into the pap
soft rubber is employed to expand the nip width.
5. Pressure roller
The pressure roller is a rubber roller which ensures p
roller / fuser belt, and it is pressed on the fuser roller
effectively to the paper.
6. NC sensor
NC sensors detect the surface temperature of the ce
which controls the heater lamps.
7. Thermostat
These thermostats cut off the power supply to the he
becomes abnormally hot as a result of problems such
are used to prevent abnormal operation. When the th
the other damaged parts in the fuser unit).
Service Manual
2. Product d
description
ts
LAMP2)
r heater lamp (LAMP1) and the side heater lamp
ach heater lamp has its coil in a different location. The
er, those of the side heater lamp (LAMP2) are on both
roller so that they will not rotate separately.
generated by the heater lamp to the fuser belt. The
hances heat conduction, and thus the warming-up
oller. It conducts heat from the heat roller to the fuser
oller. It conducts heat from the heat roller to the fuser
g up time and mode changing time. To prevent the
he fuser belt is fluorinated.
r with the fuser belt in-between. By this pressure
t conduction to the paper is enhanced so that toner
per To improve the fusing ability a fuser roller with
per. To improve the fusing ability, a fuser roller with
proper nip width between the pressure roller and fuser
/ fuser belt by springs in order to fuse toner
nter and the rear end of the fuser belt/ heat roller
eater lamps by opening the circuit when the fuser belt
h as a NC sensor malfunction. These thermostats
hermostat is triggered, it must be replaced (as well as
2-4
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SAMSUNG ELECTRONICS
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