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Service Guide OKIPAGE4w
Chapter 2 Operation Description
Fusing
The transferred toner image fuses to the paper, because heat and pressure are applied when it passes
between the heat roller and back-up roller.
The Teflon-coated heat roller contains a 400 W heater (Halogen lamp) that heats the heat roller. The
thermistor on the surface of the heat roller keeps its temperature constant. A thermostat is also installed
for safety. If temperature rises abnormally, this thermostat opens to suspend voltage to the heater.
The back-up roller is pressed against the heat roller by the pressure spring on each side.
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner
Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
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