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Fusing unit – Lexmark 5021-0XX User Manual

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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.