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TRANSPORT, FUSING, AND EXIT
30 March, 1999
2.9.3 FUSING OVERVIEW
[F]
[D]
[A]
[B]
[C]
[F]
[E]
A269D503.WMF
Toner is fused onto the paper fed from the transport section by applying heat and
pressure.
The hot roller [A] and pressure roller [B] each have a fusing lamp [C] (780 W for the
hot roller and 400 W for the pressure roller) at the axis. Their temperatures are
controlled by the hot roller thermistor [D] and pressure roller thermistor, [E]
respectively.
Temperature control is accomplished normally by turning the fusing lamps on and
off. Phase control can be selected using SP1-104-00.
There are two thermofuses [F] in the fusing unit—one near the hot roller and one
near the pressure roller. Both thermofuses open at 152°C. These thermofuses
provide fusing overheat protection.
This copier uses silicone rubber rollers as the hot and pressure rollers. The hot and
pressure rollers are not covered with a tube to maintain high image reproducibility.
Oil is applied to the rollers, however, to reduce the tendency of toner to stick to the
rollers.
2-96
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