Overview - Gestetner B147 Service Manual

6.12 FUSING

6.12.1 OVERVIEW

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1. Oiling roller
2. Oil supply roller
3. Heating roller
4. Heating roller fusing lamp
5. Heating roller thermostat
6. Heating roller thermistor
7. Fusing belt
8. Pressure roller thermistor
• A belt fusing system is used. This has a faster warm-up time than a conventional
hot and pressure roller system.
• The heating roller is made of aluminum to increase the temperature of the fusing
belt quickly.
• The hot roller is made of sponge, which flattens slightly, also increasing the
fusing nip. This roller does not contain a fusing lamp.
• Each of the heating and pressure rollers has a fusing lamp.
– NA: 770W for the heating roller, 350W for the pressure roller
– EU: 700W for the heating roller, 325W for the pressure roller
• The heating roller thermistor and pressure roller thermistor control the
temperature of these lamps.
• Temperature is normally controlled by turning the fusing lamps on and off. To
change between on/off control and phase control: SP1-104-1.
• The oil supply roller supplies oil to the fusing belt through the oiling roller. This
mechanism spreads the oil on the fusing belt evenly.
SM
1
10 9
9. Pressure roller thermo fuse
10. Pressure roller fusing lamp
11. Pressure roller
12. Hot roller
13. Junction gate
14. Cleaning roller
15. Oil supply unit
6-89
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B146D569.WMF
B147/B149/B190
FUSING