| 摘要 |
PROBLEM TO BE SOLVED: To enable rapid warming and to make warm-up time needed to reach a fixing temperature as short as possible, by having a thin belt, a pressure means for forming a nip on the belt surface side by the pressure contact of it with the belt, a heat generation roller for stretching the belt movably, and an exciting coil for generating heat by the excitation of the contact part of the heat generation roller with the belt. SOLUTION: The device has a thin belt 20, a pressure means 49 which forms a nip on the belt surface side by being in pressure contact with the belt 20, a heat generation roller 44 which is partly conductive and stretches the belt 20 movably, and an exciting coil 23 which generates heat by exciting the contact part of the heat generation roller 44 with the belt 20 from outside via the belt 20. The heat generation roller 44 is made of a magnetic material composed of an alloy of iron, nickel, and chrome, and is adjusted so that its Curie point has 220 degrees by an amount of the chrome mixed in the material. Because the heat generation roller 44 has a characteristic that it controls its own temperature, temperature control is automatically exerted so that a temperature approximate to a fixing temperature is obtained.
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