Lexmark 5021-0XX - Manual (Page 70)

1-44 Service Manual
5021-0XX
Fusing unit
The fusing unit utilizes a thermal fusing system that contains a
heated fusing roller and a belt-like backup roller. The heated roller
contains an inner heating element. The backup roller contains three
pressure members located behind the belt. Paper carrying a toner
image passes between the rollers where heat and pressure are
applied to the paper to fuse the toner to the paper.
The fusing unit consists of the following components:
No. Part Function
1
Fusing roller Used for fusing, containing a heater.
2
Back-up roller Pressure roller.
3
Fusing heater Heating device heated by a halogen lamp.