| 摘要 |
An image heating apparatus for heating an image formed on a recording material has a heater having a heat generating resistor, an electrically conductive substrate, an intermediate insulating layer formed between the resistor and the substrate and two surface insulating layers provided on substantially entire areas of both surfaces of the substrate. The surface insulating layer on that surface side of the substrate which is opposed to the recording material is higher in heat conductivity than the surface insulating layer on the opposite surface side.
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