IV-25
1.4 Fusing Unit
The fusing unit employs a thermal fusing system using heater lamps in the rollers. Paper
carrying the combined toner image passes between the heat rollers. Heat and pressure is
applied to the paper when passing between the heat rollers so that the toner image is
melted and fused onto the paper.
(1) Structure
The fusing unit consists of the following component parts; (Refer to Fig.4-26.)
Back-up Roller: is a pressure roller and incorporates a heater
lamp.
Fuser Roller: incorporates a heater lamp.
Fusing Heaters: halogen lamps to heat the rollers.
Thermal Fuse: prevent the fuser roller from being
excessively heated up.
Thermistor: is a sensor to detect the temperature of the
fuser roller’s surface.
Oil Bottle: contains silicone oil for fusing.
Fuser Cleaner: cleans the fuser roller.
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Fig.4-26
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