ELECTROPHOTOGRAPHY ROLLER

摘要

An electrophotography roller incorporated in an image creating device by the electrophotography comprising a conductive shaft disposed along the center axis, a conductive elastic layer around the shaft, a surface layer on the conductive elastic layer formed concentrically. The JIS A hardness of the conductive elastic layer is 30 DEG or less. The shear modulus of the conductive elastic layer measured in viscoelasticity under the condition of 20 DEG C, 60% PH and 0.1 Hz is 4 10<5> Pa or more. The width of contact of the roller with another member is sufficiently ensured even under a low pressing pressure. The compression residual strain is small even after the roller is pressed against another member for a long time. If the roller is used as a development roller, a sharp image with less density unevenness due to the residual strain is created. <IMAGE>