| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inexpensive induction heating fixing device, in which electric power can be efficiently supplied to a fixing roller, and accordingly in which there is no need to make a large current flow. <P>SOLUTION: This is provided with a direct current power supply, a pair of switching elements for inputting the output current of this direct current power supply and convert it into a high-frequency electric power, a resonance capacitor connected in parallel with the output of this pair of switching elements, the fixing roller which is constituted of a resistor and an induction coil which are connected with the resonance capacitor in parallel, and a feedback circuit connected, in parallel with the resonance capacitor. The feedback circuit has a resonance circuit, and the resonance frequency of this resonance circuit is set so as to be close to the resonance frequency of a parallel resonance circuit of the resonance capacitor and the induction coil. <P>COPYRIGHT: (C)2007,JPO&INPIT |
