| 摘要 |
An induction heating apparatus for heating an image formed on a recording material that has heating device for heating the image on the recording material, the heating device including a heating member and an excitation coil for generating a magnetic flux to induce an eddy current in the heating member, an input impedance of the heating device being variable, a temperature detecting element for detecting a temperature of the heating member, and control device for controlling a frequency of an electrical supply to the excitation coil so that the temperature detected by the temperature detecting element is maintained at a set temperature. In the induction heating apparatus, the control device controls the frequency in accordance with the temperature detected by the temperature detecting element and information regarding the input impedance of the heating device.
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