| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable selection of a heating value of a heat element in accordance with the size of a recording material without using a switch on a secondary side in a non-contact power feeding system.SOLUTION: A non-contact power feeding part including a secondary coil 3 feeds alternating voltage to heating layers 4b, 4e provided in a heating film 4. The heating layer 4e is provided with a loop L2 as a network where the impedance is changed in accordance with a frequency. The loop L2 is provided with a capacitive element 18a where the impedance is changed in accordance with the frequency. By changing the frequency of the alternating voltage generated in the secondary coil 3 in accordance with the size of the recording material of a heating object, the heating values of a heating layer 4a and a heating layer 4b can be switched.</p> |
