Patent ID: 8693935
Filing Date: 2014-04-08
Classification: G03G

Abstract:
1. A fixing unit comprising: a heating rotary belt; a pressing member that is disposed in an inner portion of the heating rotary belt, and that abuts with an inner surface of the heating rotary belt; a pressing rotor that is disposed facing the heating rotary belt, and that is configured to form a fixing nip with the heating rotary belt by sandwiching the heating rotary belt with the pressing member; a induction coil separated from an external surface of the heating rotary belt and disposed along the external surface, and configured to generate a magnetic flux to generate heat in the heating rotary belt; a magnetic core portion configured to form a magnetic path for the magnetic flux generated by the induction coil; a regulating portion configured to regulate the deformation of the heating rotary belt by abutment with the external surface of the heating rotary belt; and a supporting member disposed on the side of the heating rotary belt relative to the induction coil to thereby face the external surface of the heating rotary belt, and support the induction coil; wherein: the regulating portion is disposed on the supporting member, and regulates the deformation of the heating rotary belt by abutment with the external surface of the heating rotary belt to keep a distance between the induction coil and the external surface of the heating rotary belt constant; and wherein the regulating portion is disposed along the supporting member, and is formed from an arcuate rib that extends in a first peripheral direction that is the peripheral direction of the heating rotary belt along the external surface of the heating rotary belt, and abuts along the external surface of the heating rotary belt.