Patent ID: 7734241

Claim:
An image heating apparatus that heats a toner image on a recording material, the image heating apparatus includes: a rotatable heating member, the surface of which comes into contact with the toner image, the heating member having a elastic layer having a heat insulation performance and a heat storage layer, which is provided outside the elastic layer and includes at least one layer; a nip forming member that forms a nip portion to pinch and convey the recording material with the heating member; and a heater for heating the heating member from the outside thereof, wherein a heat capacity C/S per a unit surface area of the heat storage layer is in a range equal to or more than 100 J/(m 2 ·K) and equal to or less than 600 J/(m 2 ·K), and wherein a thermal conductivity of the elastic layer is not more than 0.20 W/(m·K).