To provide a semiconducting polyimide belt with which a configurational deterioration phenomenon of the belt surface scarcely occurs even when continuously used, which is excellent in durability, and with which degradation of an image scarcely occurs by setting a molar ratio of a diamine component to be within a predetermined range in the presence of a catalyst and in the absence of a dehydrating agent so as to improve a balance between its flexibility and rigidity.
The semiconducting polyimide belt includes a conductive filler. The belt includes a copolymer which is obtained by polymerizing 3,3',4,4'-biphenyl tetracarboxylic acid dianhydride, p-phenylenediamine ( component A), and 4,4'-diaminodiphenyl ether (component B) in the presence of the catalyst and in the absence of the dehydrating agent, wherein the molar ratio of the component A and the component B is represented by A/B=7/3 to 3/7.
| JP2006301255A | 2006-11-02 | |||
| JP2006267572A | 2006-10-05 | |||
| JP2006259248A | 2006-09-28 | |||
| JP2004341281A | 2004-12-02 | |||
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Koichi Kajisaki
Toshihiko Taniguchi