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2. Product Specifications and Description
2.2.7. Fuser Unit
This section describes the image fusing process used by the printer.
2.2.7.1. Fuser Unit Overview
The fuser unit of the this machine used the instant fusing system. This has a faster warm-up time than a conventional
fusing and pressure roller system.
The drum-fuser belt is made of 3 thin layers that can be heated by the halogen lamp inside more quickly. The pressure roller
are made of soft silicone rubber, which flatten slightly, increasing the fusing nip. The drum-fuser belt contains 2 fusing lamps.
One lamp, center heating lamp, heats the center and the other lamp, side heating lamp, heats the ends in the axial direction.
NC sensors (non-contact type thermistors) is located in the front area of the drum-fuser belt and controls the temperature. One
NTC thermistor and two thermostats are located at the center and side. They protects the fusing system from overheating.
Temperature is normally controlled by turning on and off the center heating lamp and side heating lamp, respectively,
corresponding to predetermined target temperatures.
Thermostat
Thermistor : Contact
NC S ensor
Halogen Lamp
Drum-Fuser Belt
2-27
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