| abstract |
PROBLEM TO BE SOLVED: To reduce a change in electrical characteristics and friction characteristics from an initial state of a conductive roll, and facilitate electrical control of an image forming apparatus and control of a transport mechanism when mounted on the image forming apparatus. An electroconductive roll having an electroconductive elastic layer on an outer peripheral surface of a core metal, an oxide film is formed on the outermost surface of the electroconductive elastic layer, and an initial roll resistance at an applied voltage of 1000V If the value is R0 [Ω] and the roll resistance value after continuous application for 100 hours is R100 [Ω], then (logR100−logR0) ≦ 0.3, the initial friction coefficient is μ0, and the applied voltage is 1000 V, and it is continuously applied for 100 hours. Assuming that the friction coefficient after this is μ100, 0.8 <μ100 / μ0 <1.0. [Selection] Figure 1 |