Fuser Section - Kyocera FS-3040MFP Service Manual

2-1-7 Fuser section

The toner on the paper is molten and pressed into the paper as it passes between the heat roller and the
press roller in the fuser unit.
The heat roller has a fuser heater (FH) inside which continuously turns on and off by the fuser thermistor
(FTH) to maintain the constant temperature onto the heat roller surface.
Should the temperature of the heat roller exceed the predetermined value, the fuser thermostat (FTS) is acti-
vated to effectively disconnect the fuser heater (FH) from power.
Fuser temperature is optimized to the paper type. The heat roller is resin coated by florin to prevent toner from
accumulating on the roller after a long run. Care must be taken while handling the heat roller not to scratch the
roller surface as doing so may result in print problems. The heat roller has four separators (claws) which are
continuously in contact with its surface. These separators (claws) prevent the paper on which toner has been
fused from being wound around the heat roller causing paper jam.
The press roller is made of the heat-resistant silicone rubber. This roller is used to strongly press the paper
towards the heat roller by means of press springs.
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Figure 2-1-20 Fuser section
1. Fuser heater (FH)
2. Heat roller
3. Press roller
4. Fuser upper frame
5. Fuser lower frame
6. Separators
7. Eject pulley
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8. Eject roller
9. Feed guide
10. Actuator (eject sensor)
11. Fuser thermostat (FTS)
12. Fuser thermistor 1 (FTH1)
13. Fuser thermistor 2 (FTH2)
2-1-16
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2LW/2LX