SEMICONDUCTIVE BELT AND METHOD OF MANUFACTURING FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a semiconductive belt which has high mechanical characteristics in spite of use for an image forming device and has the decreased intra-surface variations of resistance, the lessened degradation in resistance by an electrical load or lapse of time, good shape accuracy and lower surface friction resistance. SOLUTION: This semiconductive belt consists of a polyimide resin containing carbon black and the surface roughness Ra of the outer peripheral surface of the belt is <=0.5μm and its coefficient of surface dynamic friction is <=0.8. This method of manufacturing the semiconductive belt includes a process step of supplying a polyamide acid solution uniformly dispersed with the carbon black to the inside surface of a cylindrical metal mold having the surface roughness Ra of <=1.0μm and forming a film by rotating the cylindrical metal mold in its axial direction, a process step of peeling the cured film until the film can support itself by heating the metal mold and removing the solvent and a process step of replacing the peeled film to the outside surface of a metallic cylinder having the surface roughness Ra of 0.2 to 3.0μm and heating the film together with the cylinder to effect the imide conversion thereof.