Fuser Unit - Panasonic FP-D250 User Manual

6. Fuser unit

1) Construction of the fuser
• The construction of the fuser is as follows.
Part description
1 Heat roller
2 Pressure roller
3 Cleaning web
4 Cleaning web roller
5 Fuser thermostat
6 Fuser thermistor
7 Main heater lamp
8 Sub heater lamp
9 Fuser inlet guide
10 Upper fuser separation finger
11 Lower fuser separation finger
12 Pressure spring
Heat roller temperature 374°F/190°C
(D250/D350/D350H)
359°F/180°C(D450/D600)
Main heater lamp 850 W (FP-D250/D350)
950 W (FP-D450/D600)
Sub heater lamp 400 W (Short one)
(FP-D450/D600)
Pressure roller tension Approx. 60 kgf
(D250/D350/D350H)
Approx. 46.4 kgf(D450/D600)
Function
Fuses toner to the paper by applying heat.
(Aluminum + Teflon coating)
Fuses toner to the paper by pressing paper to heat
roller.
(Silicone rubber + Fluorine plastic tube)
Cleans heat roller with non-woven cloth impregnated
with silicone oil. Coats roller with silicone oil to reduce
adhesion of toner.
Presses cleaning web onto heat roller.
Safety device used to turn off power supplied to
heater lamp under excessively high temperature
conditions
Sensor used to detect surface temperature of the
heat roller and control temperature to a specified
level.
Halogen lamp for fusing
Lighting: warming up faster (FP-D450/D600)
Guides paper to fuser roller
Assists in separating the copy paper from the heat
roller.
Assists in separating the copy paper from the
pressure roller.
Maintains pressure between heat and pressure
roller.
4
3
1
10
11
2
5
6
7·8
9
12
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