| 摘要 |
This specification discloses a heater comprising an electrically conductive substrate, a first electrically insulating layer formed on the electrically conductive substrate, a heat generating resistor formed on the first electrically insulating layer, and a second electrically insulating layer formed on the heat generating resistor, wherein when the glass transition temperature of the first electrically insulating layer is defined as T1 and the glass transition temperature of the heat generating resistor is defined as T2 and the glass transition temperature of the second electrically insulating layer is defined as T3, T1, T2 and T3 have the relation that T1>T3>=T2 or T1>T2>=T3. The specification also discloses an image heating apparatus using such heater.
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