| 摘要 |
The object of the present invention is to provide an inductive thermal fusing device that is reduced in size and weight based on a smaller closed magnetic circuit iron core. In order to attain this object, the present invention comprises a closed magnetic circuit iron core that forms a closed magnetic circuit, an inductive coil 14 that is wound such that it is linked to the closed magnetic circuit iron core and generates a magnetic flux that causes an inductive current that flows around the circumference of the conductive member, a power supply 50 that provides AC voltage to the inductive coil 14, a voltage detection means 7 that detects the voltage of the power supply 50, and a frequency changing means (first through fourth SSRs 51 through 54 and a CPU 5) that changes the frequency of the AC voltage applied to the coil 14 based on the detected voltage.
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