2. Product Specifications and Description
2.6. Fuser unit
It is consisted of a halogen lamp, heat roller, pressure roller, thermistor and thermostat. It fuses the toner on a paper by
heat and pressure to complete the printing job.
Pressure Roller
Pressure Roller2
Halogen Lamp
Heat Roller
Thermistor
Thermostat
1)
Thermostat
When a heat lamp is overheated, a Thermostat cuts off the main power to prevent over- heating.
•
Thermostat Type : Non- Contact type
•
Control Temperature : 190
℃
± 5
℃
2)
Thermistor
It is a temperature detecting sensor.
•
Temperature Resistance : 7 K
Ω
(180
℃
)
•
Rated B-value R25/85 3370K±3% (The Rated B-value is calculated from the zero-power resistance measured
at 25
℃
and 85
℃
)
3)
Heat roller
The heat roller transfers the heat from the lamp to apply heat on to the paper.
The surface of a heat roller is coated with Teflon, so toner does not stick to the surface.
4) Pressure roller
A pressure roller mounted under a heat roller is made of a silicon resin, and the surface also is coated with Teflon.
When a paper passes between a heat roller and a pressure roller, the toner fuses to the surface of a paper permanently
through this combination of heat and pressure.
5)
Halogen Lamp
•
Voltage : 120 V, 115 ± 5 % / 220 V, 230 ± 5 %
•
Capacity : 850 Watt ± 42.5W
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