Fusing Unit
D014/D015/D078/D079 6-88 SM
The fusing belt system applies heat to the belt at two points: the heating roller and the
pressure roller. This conserves space and allows these rollers to be smaller (less pressure
is required for fusing so less torque is required).
The fusing belt applies heat directly to fuse the toner to the paper.
The heating roller has three fusing lamps. It applies heat to the fusing belt after the
fusing belt passes the hot roller. The heating roller also keeps the fusing belt hot while
the machine is in standby mode.
The pressure roller has a metal core to provide rigidity, and is covered with Teflon to
prevent toner from adhering to its surface. It applies heat with one fusing lamp to
maintain the temperature of the fusing belt while the machine is in standby mode.
The fusing exit sensor detects jams at the fusing exit by confirming that paper arrives
at the fusing exit at the correct time.
The hot roller is a sponge roller designed for a higher line speed and better grip at the
nip. A pressure roller lift mechanism keeps the pressure roller separated from the hot
roller while the machine is idle, to protect the hot roller from warping.
The fusing/exit motor speed depends on the type of paper selected for the job. Refer to the
table below.
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