Fusing Unit - Hitachi SL1 Maintenance Manual

4.1.4 Fusing Unit (Fig.4-25)
Fusing Unit employs the thermal fusing system containing the heater in the roller.
Papers carrying the toner images pass between the heat rollers.
pressure is applied to the paper when passing between the heat rollers so that the
toner image is melted and fused on the paper.
(1). Structure
Fusing Unit consists of the following component members:
1 . Fusing Roller
2
. Back-up Roller
3
. Fusing Heater
4
. Thermistor
5
. Thermal Fuse
6
. Oil Bottle
7
. Cleaning Roller
: incorporates the heater.
: is a pressure roller to incorporates the heater.
: is heated by the halogen lamp.
: is a sensor to detect temperature of fuser roller's surface.
: prevent the fuser roller from being excessively heated up.
: contains the silicone oil for fusing.
: cleans the fuser roller.
5
2
Fig.4-25
4-28
7
1
3
Heat and
4
6