Page: 269Service Manual for OF5300/5600Chapter B Print Operation DescriptionAfter the end of the transfer operation, the unfused toner image is fused on the paper under heat andpressure as it passes between the heater roller and the back-up roller. The heater roller with a Tefloncoating incorporates a 500 W heater (Halogen lamp), which heats the heat roller.A thermister, which is in contact with the heater roller, regulates the heater roller at a predeterminedtemperature (about 185 °C for OKIFAX 5000 series). A safety thermostat cuts off voltage supply to theheater by opening the thermostat in the event of abnormal rise in temperature.The back-up roller is held under a pressure of 2.5 kg by the pressure spring at each side.Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA BusinessPartner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
