Patent ID: 6560421
Filing Date: 2003-05-06
Classification: G03G

Abstract:
An image fixing apparatus comprising:a heating roller; a coil rotatably set within the heating roller and so configured as to impart a high-frequency magnetic field to the heating coil; a high-frequency generating circuit so configured as to output high-frequency power to the coil for driving; first and second temperature sensors so configured as to detect temperature at two places along a peripheral direction of the surface of the heating roller; a first control section so configured as to control the output of the high-frequency generation circuit in accordance with a detection temperature of the first temperature sensor; and a second control section so configured that, at a rotation time of the heating roller, the coil is not rotated and, at a non-rotation time of the heating roller, the coil is rotated if the difference between the detection temperatures of the respective temperature sensors satisfies a predetermined condition.