US Patent 7356294 Developing roll

A developing roll which may reduce stress imparted on toner and have uniform transportability of toner. The developing roll comprises a shaft, an elastic layer provided on an outer peripheral surface of the shaft, and a cylindrical outermost layer provided directly or indirectly via a layer on an outer peripheral surface of the elastic layer, wherein an outer peripheral surface of the outermost layer is formed into a rough surface by distribution of multiple dimples in such a manner that open ends thereof do not overlap one another on the surface and a portion other than the dimples on the rough surface forms a remaining portion of a cylindrical shape.