| 摘要 |
PURPOSE:To obtain a roller fixing device improved in the releasability of the surface layer and superior in its durability by forming a roller provided with a rubber mixed with a fluororesin and a fluororesin layer formed on the outside. CONSTITUTION:The roller is composed of a core metal 11d, an elastic layer 11c, the layer 11b of a rubber mixed with the fluororesin, and the surface layer 11a made of the fluororesin. Since the part of the layer 11b to be bonded to the layer 11a is turned into the fluororesin alone or a state rich in it by heat treating, adhesiveness between both layers 11a and 11b can be improved, and accordingly, the film thickness of the fluororesin surface layer 11a can be comparatively freely selected, and a proper thickness of the layer 11a is 2-100mum, preferably, 30-50mum.
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