2. Product Specifications and Description
2.6. Fuser unit
This section describes the image fusing process used by the machine.
2.6.1. Fuser Unit overview
This unit fuses the toner that was transferred by the transfer roller onto the paper, by applying heat and pressure to
complete fusing process. This machine applied the 2–Roller fusing system and used the thinner heat roller to improve
the warm-up time.
1)
Halogen Lamp
The fuser unit has two halogen lamps. One heats the center of the heat roller, the other heats the end of axial direction.
These halogen lamps are lit alternately to heat the heat roller. each lamp has its coil in a different location. The coil
of the center heater lamp is in the center, those of the side heater lamp are on both sides. The lamp s are fixed inside
of the heat roller. When rotating the heat roller, these lamps does not rotate.
2)
Heat Roller
The heat roller is made of the aluminum and gets heat from the halogen lamp and transfer it to toner and paper. The
thinner heat roller reduces the warm-up time and the mode switching time. To prevent the heat roller from adhering to
the toner, its surface applied the PFA coating. The gear located the side of the heat roller rotates the roller.
3)
Pressure Roller
The pressure roller is a rubber roller which ensures proper nip width between the pressure roller and heat roller. To
adhere the toner on paper effectively, the pressure roller pushes the heat roller by using the spring.
4)
NC sensor
NC sensors (non-contact type thermistors), located near the center of the heat roller, control the temperature.
5)
Thermistor
Thermistor detects the temperature on the surface of the heat roller and controls the halogen lamp.
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Copyright© 1995-2017 SAMSUNG. All rights reserved.
Summary of Contents for MultiXpress K4 Series
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Page 53: ...2 Product Specifications and Description Copyright 1995 2017 SAMSUNG All rights reserved 2 37 ...
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