Patent ID: 6321046
Filing Date: 2001-11-20
Classification: G03G,H04N

Abstract:
An induction heating fixing device used in an image forming apparatus, comprising:a first CPU for controlling operation of the overall said image forming apparatus;a member to be heated;a sensor, connected to said first CPU, for detecting a temperature of the heated member;an excitation coil, arranged in the vicinity of the heated member, for heating the heated member by induction upon receiving a current; andan induction heating control circuit for controlling current supply to said excitation coil;a second CPU for controlling operation of said induction heating control circuit independent of the control of said first CPU; andwherein said first CPU outputs a heating ON/OFF signal according to the temperature detected by said sensor, said second CPU controls the operation of said induction heating control circuit on the basis of the heating ON/OFF signal.