公开(公告)号：US10423107B2

公开(公告)日：2019-09-24

申请号：US15021016

申请日：2015-07-07

申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD. ,  SUMITOMO ELECTRIC FINE POLYMER, INC.

发明人： Shingo Nakajima ,  Jun Sugawara ,  Masatoshi Ishikawa ,  Yoshitaka Ikeda ,  Kazuhiro Kizawa

IPC分类号： G03G15/20 ,  B32B1/08 ,  B32B27/28

摘要： An object of the present invention is to provide a polyimide tube for a fixing belt, the polyimide tube having good toner fixability. A polyimide tube for a fixing belt of an image-forming apparatus according to the present invention includes a polyimide layer that contains a polyimide as a main component and a needle-like filler, the needle-like filler containing a carbon nanotube and needle-like titanium oxide. A product of a thermal diffusivity (m2/s) of the polyimide layer and a breaking elongation (%) of the polyimide layer in an axial direction is 35×10−7 or more. An orientation direction of the needle-like filler is preferably an axial direction or a circumferential direction.