COPYRIGHT © 1997 CANON INC. CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 6 FIXING SYSTEM6-1I. BASIC OPERATIONSA. OutlineThe drive roller of the fixing assembly is driven by the main motor (M1).When the drive roller rotates, the fixing film rotates and, in conjunction, the pressureroller rotates.Part of the inside of the fixing film is heated by the fixing heater.The temperature of the fixing heater is monitored by a thermistor (TH1), and theresult is sent to the microprocessor in the DC controller circuit in the form of the fixingheater temperature detection signal (TH1).Based on the result (TH1 signal), the microprocessor on the DC controller varies thefixing heater drive signal (HTRD) to control the temperature of the fixing heater.Further, a thermistor (TH2) is also provided on the end (rear) of the fixing heater tomonitor overheating.Figure 6-101Drive rollerDelivery rollerFixing cleaning rollerM1Pressure rollerFixing heaterFixing filmTension rollerMain motorThermistor
