ELECTRICALLY SEMICONDUCTIVE BELT

摘要

PROBLEM TO BE SOLVED: To obtain an electrically semiconductive belt capable of easily attaining the objective surface resistivity while retaining superior mechanical characteristics and less liable to cause unevenness in the surface resistivity and variation due to the environment by incorporating carbon black and an electrically conductive metal oxide having a specified average particle diameter as an electrically conductive filler. SOLUTION: The electrically semiconductive belt is based on a polyimide resin and contains an electrically conductive filler. An electrically conductive metal oxide having <=0.1μm average particle diameter is used as the electrically conductive filler in combination with carbon black. Preferably 1-20 pts.wt. carbon black and 10-40 pts.wt. electrically conductive metal oxide based on 100 pts.wt. solid component of the polyimide resin are contained so as to more reliably produce the synergistic effect of those.