Patent ID: 8626046
Filing Date: 2014-01-07
Classification: G03G

Abstract:
1. An image heating apparatus for heating a toner image formed on a recording material, comprising: a heat member configured to heat the toner image formed on the recording material; and a pressure roller comprising a metal core, a rubber layer, and a resin tube layer serving as a surface layer, the pressure roller forming, in cooperation with the heat member, a nip portion at which the recording material is pinched and conveyed, wherein the rubber layer comprises wherein the second rubber layer contains needle-shaped fillers at 5 vol % or more and 40 vol % or less, and has a thermal conductivity of 2.5 W/m·K or more in an axial direction of the pressure roller, the needle-shaped fillers having an average length of 0.05 mm or more and 1 mm or less and a thermal conductivity of 500 W/m·K or more in an axial direction of the needle-shaped filler, and wherein the second rubber layer is formed by a silicone rubber containing an adhesion-imparting agent and is bonded with the resin tube layer directly by an act of the adhesion-imparting agent.