| 摘要 |
PROBLEM TO BE SOLVED: To prevent the swelling phenomenon of an insulating layer and a heating element from occurring by combining a thin structure body whose heat capacity is small, to prevent the temperature of the heating element from abnormally rising and to prevent the durability of the insulating layer from being lowered by enabling heat to be transmitted to the structure body even when the heating element is peeled by any chance. SOLUTION: This heating type fixing roller is provided with a cylindrical core bar 1, the insulating layer 3 laminated at the inside surface of the core bar 1 and the heating element 4 laminated at the inside surface of the layer 3. Then, a metallic foil pipe 6 whose thermal expansion coefficient is larger than that of the core bar is inserted in the inside surface of the heating element through another insulating layer.
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