Epson ColorPage EPL-C8000, Service Manual

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EPSON EPL-C8000 Rev. B
Chapter 2 OPERATING PRINCIPLES 2-14
2.1.3.10 (10) Fusing
In the Fusing step, the toner (image) is fused onto the paper by heat
and pressure.
o
The complete full-color toner image transferred onto the paper form
the belt is very fragile, so it must be fused onto the paper by the
Fuser Assembly. The toner is melted with heat from the Heat Roll
and fused under pressure between the Pressure Roll and the Heat
Roll. (The Heat Roll is heated by the H/R Heater.) As auxiliary heat,
the Pressure Roll has a P/R Heater.
o
When the toner image is fused, the toner becomes adhesive,
causing the paper to adhere to the Heat Roll. To prevent this, the Oil
Roll Assembly supplies Fuser Oil to the Heat Roll. This allows the
paper to be peeled off easily from the Heat Roll.
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If the Oil Roll (Oil Roll Assembly) is continuously touching the Heat
Roll, the Fuser Oil may degrade or cause oil spots on the paper. To
prevent this, the Oil Roll touches (advances) the Heat Roll only
when the toner is fused; at other times it is retracted from the Heat
Roll. This Advance/Retract switching operation is carried out by the
Oil Cam Solenoid.
Figure 2-16. Fusing