| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrophotographic seamless belt which is improved, especially, in bending durability and attractive carrying force, so as to be adaptable to a compact, high-speed image forming apparatus attaining high image quality, and by which an image of good quality can be formed. SOLUTION: The electrophotographic seamless belt contains at least thermoplastic resin including the same repeated structure, and wherein Mw/Mn≥3.0 is established, regarding the ratio of mass average molecular weight Mw to number average molecular weight Mn obtained by measuring the thermoplastic resin by a GPC method. Besides, in the molecular weight distribution of the thermoplastic resin obtained by the GPC method, regarding the remaining 80% of a molecular weight distribution curve removed the 10% from the low molecular weight area and the 10% from the high molecular weight area, an area Sa where an inequality of -0.4<dy/dx<+0.4 is established with reference to the gradient dy/dx of the molecular weight distribution curve is≥30% of the whole area. COPYRIGHT: (C)2007,JPO&INPIT
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