Patent ID: 9020384
Filing Date: 2015-04-28
Classification: G03G

Abstract:
1. An image heating apparatus comprising: an endless belt configured to heat a toner image on a sheet at a nip, said endless belt including a heat generating layer configured to generate heat by electric energy and a conductive layer configured to be electrically connected to said heat generating layer; an electric contact portion provided to be in contact with said conductive layer and configured to supply the electric energy to said conductive layer; first and second electric insulation portions provided at positions where they are contactable to said electric contact portion with rotation of said endless belt and configured to be substantially electrically insulated, wherein said first and second electric insulation portions are provided so that lengths thereof with respect to a circumferential direction of said endless belt are different from each other; a detecting portion configured to detect whether an electric conduction state between said electric contact portion and said conductive layer is in a predetermined state or not when said endless belt is rotated; and a control portion configured to control a widthwise position of said endless belt using an output of said detecting portion.