Patent ID: 7015431
Filing Date: 2006-03-21
Classification: G03G

Abstract:
1. A heating apparatus comprising: first and second heating bodies; and a phase control part for performing phase angle control of supplying of alternate currents into said first and second heating bodies, wherein, in a case that said phase control part controls the phase angles of voltages applied to both said first and second heating bodies to transfer their condition between an energized condition and a non-energized condition at a portion in a half cycle of the alternate currents, said phase control part controls the phase angles to transfer their condition between an energized condition and a non-energized condition at the same timing, and, wherein, in a case that said phase control part controls a phase angle of a voltage applied to one of said first and second heating bodies to transfer its condition between an energized condition and a non-energized condition in a half cycle of the alternate current, said phase control part turns off the alternate current of the other of said first and second heating bodies in a whole part in a half cycle of the alternate current, thereby a proportion of supplied power to both said first and second heating bodies is capable of being variable without performing a phase control in said first and second heating bodies independently.