Patent ID: 6871041

Claim:
A fixing apparatus comprising: a heating roller configured to have a heat insulating member and a metal member formed on the insulating member; a first coil including a first core and provided outside the heating roller to generate a high frequency magnetic field for induction-heating the heating roller; and a second coil including a second core and provided outside the heating roller to generate a high frequency magnetic field for induction-heating the heating roller, the second core and the heating roller being spaced from each other by a distance shorter than a distance between the first core and the heating roller, the first coil extending in an axial direction of the heating roller and in parallel to the heating roller, the second coil including a portion which is spaced from the heating roller by a distance substantially equal to a distance between the first coil and the heating roller, and a portion spaced from the heating roller by a distance shorter than the distance between the first coil and the heating roller.