Samsung ML-1665 Service Manual - Page 23

Fuser, Thermostat, Heat roller, Pressure roller, Halogen Lamp

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Product spec and feature 2.2.3.4 Fuser It is consisted of a halogen lamp, heat roller, pressure roller, thermistor and thermostat. It sticks the toner on a paper by heat and pressure to complete the printing job. 1) Thermostat When a heat lamp is overheated, a Thermostat cuts off the main power to prevent over- heating. - Thermostat Type : Non- Contact type dual THERMOSTAT - Control Temperature : 170℃ ± 5 ℃ 2) Thermistor It is a temperatrue detecting sensor. - Temperature Resistance : 7 ㏀ (180 ℃ ) 3) Heat roller The heat roller transfers the heat from the lamp to apply a heat on 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, toner adheres to the surface of a paper permanently. 5) Halogen Lamp - Voltage 120 V : 115 ± 5 % 220 V : 230 ± 5 % - Capacity : 600 Watt ± 25 W Service Manual 2-13 Samsung Electronics

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Product spec and feature
Service Manual
2-13
Samsung Electronics
2.2.3.4 Fuser
It is consisted of a halogen lamp, heat roller, pressure roller, thermistor and thermostat. It sticks the toner on
a paper by heat and pressure to complete the printing job.
1) Thermostat
When a heat lamp is overheated, a Thermostat cuts off the main power to prevent over- heating.
- Thermostat Type : Non- Contact type dual THERMOSTAT
- Control Temperature : 170
℃
± 5
℃
2) Thermistor
It is a temperatrue detecting sensor.
- Temperature Resistance : 7
㏀
(180
℃
)
3) Heat roller
The heat roller transfers the heat from the lamp to apply a heat on 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, toner adheres to the surface of a
paper permanently.
5) Halogen Lamp
- Voltage 120 V : 115 ± 5 %
220 V : 230 ± 5 %
- Capacity : 600 Watt ± 25 W