Patent ID: 9026023
Filing Date: 2015-05-05
Classification: G03G

Abstract:
1. A fixing device comprising: an endless fixing belt heated by a heating part; a pressing member disposed on a side of an inner surface of the fixing belt, the inner surface configured to slide along an outer surface of the pressing member; a pressure applying roller configured to press the pressing member to form a fixing nip at which the fixing belt is interposed and rotationally driven; and a belt drive assist mechanism disposed outside a nip region of the fixing nip and configured to rotationally drive the fixing belt, wherein the heating part comprises: a coil bent like a loop in an axial direction of the fixing belt and configured to generate a magnetic flux to inductively heat the fixing belt; and a magnetic core disposed adjacent to the coil and configured to guide the magnetic flux to a layer of the fixing belt which is induced to generate heat, wherein the belt drive assist mechanism comprises: a cylindrical rotation member configured to be rotationally driven by a drive source; a pressing roller; and a rotation detector configured to detect whether the fixing belt is rotating by detecting rotation of the pressing roller,