Synztec Co., Ltd.

Kenta Shikakura

Shinji Motokawa

The present invention provides a conductive roller which has excellent resilience in response to deformation and exhibits small variation in electrical resistance. The conductive roller has a metallic core, a conductive elastic layer formed on the outer surface of the core to which layer conductivity has been imparted by carbon black, and a surface-treated layer formed through impregnating a surface of the conductive elastic layer with a surface-treatment liquid, wherein the difference &#x394;Hs (Hs&#x2212;Hs) between micro-hardness Hsof a surface of the conductive roller and micro-hardness Hsof the conductive elastic layer after removal of the surface-treated layer, the hardness being determined by means of a micro-hardness tester, is 5% or less of the micro-hardness Hs.

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Yokohama, Japan

Kenta Shikakura