| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a semiconductive seamless belt which has no variation in surface resistivity, has excellent durability, and, particularly when being used for an intermediate transfer belt or the like in an electrophotographic image forming apparatus, has no occurrence of transfer unevenness and transfer defects, and in which toner scattering caused by separating discharge can be sufficiently suppressed. <P>SOLUTION: In the semiconductive seamless belt, the internal layer and the external layer are composed of a polyimide base resin layer comprising carbon black, respectively, and in which the common logarithm value of surface resistivity under the applied voltage of 500 V in the external layer lies in the range of 9 to 13 logΩ/sq., and also, a difference in the common logarithm value of the surface resistivity under the applied voltage of 250 V in between the internal layer and the external layer lies in the range of 0.5 to 1.5 logΩ/sq. <P>COPYRIGHT: (C)2010,JPO&INPIT |
