| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a semiconductive belt capable of reducing dimensional changes due to humidity at the time of using it for an intermediate transfer belt or the like and having excellent durability. <P>SOLUTION: In the semiconductive polyimide belt consisting of polyimide resin containing carbon black, a coefficient of linear expansion of moisture absorption is ≤30 ppm/%RH and tearing strength is ≥3.5 N/mm. The polyimide resin is obtained by polymerizing tetracarbonic acid bianhydride or its derivative and diamine compound and imidizing the polymerized component and the diamine compound is preferably selected from a group of compounds shown by the structural formula (I) (in the formula, X indicates the same or respective different alkyl groups having 1 to 5 carbons or its alkyl halide) and structural formulas (II), (III). <P>COPYRIGHT: (C)2005,JPO&NCIPI |
