Patent ID: 8224222

Claim:
A fixing device comprising: a first fixing member; a heating member; a fixing belt that forms an endless-shaped belt member supported around the first fixing member and the heating member with tension to be rotatable, and comes into contact with the heating member to be heated; and a second fixing member that forms a fixing nip region together with the fixing belt, the fixing device fixing a toner image borne on a recording medium onto the recording medium in the fixing nip region under application of heat and pressure, the heating member including: a heat generating member that has a heat generating layer composed of a resistance heat generating element that generates heat due to being energized; and a heat radiating member that radiates heat generated by the heat generating member to the fixing belt, the heat radiating member having: a heat receiving section that is provided to be in contact with a plurality of surfaces of the heat generating member and receive heat generated by the heat generating member; and a heat transfer section that is provided to be curved along the inner circumferential surface of the fixing belt and transfers heat received by the heat receiving sections to the fixing belt, and inside the heat receiving section and the heat transfer section, a heat transport section being provided to transport heat received by the heat receiving section toward the heat transfer section in a width direction and a circumferential direction of the fixing belt.