| 摘要 |
PURPOSE:To stably provide the conductive roller of stable performance under all environmental conditions suitable for a mechanism subjected to constant voltage control without increasing a power source capacity. CONSTITUTION:This conductive roller 1X10<3>OMEGA to 10<12>OMEGA resistance when impressed with 500V at and under ordinary temp. and ordinary humidity of 25'C and 50% relative humidity. The conductive roller described above is so designed that the change rate K of the roller resistance by a negative charge voltage when the roller resistance value is measured under voltage charge conditions of respectively 500V and 2000V under respective environments of 35 deg.C and 85% relative humidity(RH) (hereafter described as H/H environment), 25 deg.C and 15%RH (hereafter described as NUN environment) and 10 deg.C and 15%RH (hereafter described as L/L environment) attains K=(the roller resistance at the time of loading with 500V voltage)/(the roller resistance at the time of loading with 2000V voltage), (K in the H/H environment)<=(K in the N/N environment)<(K in the L/L environment). |
