INDUCTION HEATING FIXING DEVICE AND IMAGE FORMING APPARATUS WITH THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an induction heating fixing device in which accurate power control for an invertor circuit can be performed according to variation in power source voltage or consumed current without being influenced by impulse noise from other equipment. SOLUTION: The induction heating fixing device is provided with; a body to be heated formed from a conductive member; a heating means carrying out induction heating of the body to be heated; an invertor circuit means supplying high frequency current to the heating means; a temperature control means controlling power for the invertor circuit means based on the temperature of the body to be heated; a rectifying means rectifying power source voltage supplied to the invertor circuit means or consumed current consumed by the invertor circuit means; a DC conversion means converting the rectified power source voltage or the consumed current to DC signals; a pulse width conversion means converting values of the DC signals to the pulse width; a counting means counting the converted pulse width; a transmission means transmitting the pulse width from the pulse width conversion means to the counting means; and a power control means carrying out power control for the invertor circuit means based on the pulse width. COPYRIGHT: (C)2009,JPO&INPIT