Oki OKICOLOR 8 Maintenance Manual page 25

(7) Fixing The toner image just transferred to the paper is fused and fixed to the paper while
the paper is passing through the gap between the heat roller and the backup roller.
The teflon-coated surface of the heat roller is heated up by the 800-watt heater (or a
halogen lamp) provided in the heat roller. The temperature of the heat roller surface is
controlled by a thermistor in contact with the surface of the heat roller. A thermostat is
provided for safety. When the heat roller temperature goes higher than the preset
temperature, the thermostat opens and shut off power to the heater in the heat roller.
The backup roller is evenly pushed against the heat roller by two end springs.
(8) Cleaning
The toner which remains on the OPC Drum without being fused is scraped by a cleaning blade
and discarded in the waste toner tank.
41057610TH Rev. 1
Paper
Backup roller
OPC drum
Cleaning blade
Heat roller
Heater
Thermistor
Transfer roller
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