Patent ID: 7102108
Filing Date: 2006-09-05
Classification: G03G,H05B

Abstract:
1. A heating device comprising: a coil that is supplied with predetermined power and generates a predetermined magnetic field; a core member with a predetermined characteristic frequency, the core member being disposed near the coil; a control section that supplies power with a frequency within a range of 20.05 to 100 kHz to the coil; and an electrically conductive member that produces heat by a magnetic field that is generated by the coil, which is supplied with the power having a frequency within the range of 20.05 to 100 kHz, from the control section, wherein the predetermined characteristic frequency of the core member differs from the range of frequencies of the power that are output from the control section and; the core member is a three-dimensional rectangular body with rectangular surface having a dimension r on one side and a dimension h on another side, the shape meeting the following condition,