| 摘要 |
PROBLEM TO BE SOLVED: To improve the durability of a fixing roll to be used for an electrophotographic apparatus, a printer or the like. SOLUTION: A fixing roll 1 comprising a core 2 and a surface layer 3 formed on the surface of the core 2, wherein the surface layer 3 is composed of a tetrafluoroethylene-perfluoroalkylvinylether copolymer film whose crystallinity is≥45%, or a fixing roll 1A consisting of a core 2A and a surface layer 3A formed on the surface of the core 2A, wherein the surface layer 3A is composed of a tetrafluoroethylene-perfluoroalkylvinylether copolymer film whose crystallinity is≤35%, is provided. The fixing roll 1 is applied when two-component toner is mainly used and the fixing roll 1A is applied when one-component toner is mainly used. COPYRIGHT: (C)2007,JPO&INPIT
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