Sumitomo Rubber Industries Limited

Yogun Ki

Takayuki Hattori

Kenichi Uesaka

Katsumi Terakawa

Masakazu Tanaka

Jun Ochi

Kiyotaka Okuda

A conductive layer of a conductive member for an image-forming apparatus is composed of a conductive polymer composition containing an ionic-conductive addition salt. The conductive polymer composition has a continuous phase and one or more uncontinuous phases including at least one first uncontinuous phase. The continuous phase and the uncontinuous phase form a sea-island structure. A salt capable of dissociating into cations and anions is unevenly distributed to the first uncontinuous phase. A polymer composing the first uncontinuous phase has a higher degree of affinity for the salt capable of dissociating into cations and anions than a polymer composing the continuous phase to prevent the salt (or the cations, the anions) from shifting out of the first uncontinuous phase or out of the polymer composition. The conductive polymer composition can contain melamine cyanurate so that it is flame-retardant.

Conductive member for image-forming apparatus

A conductive roller including at least one conductive elastic layerformed of a polymer composition includes a main-component polymer not containing chlorine nor bromine and containing polyether or/and a cyan group; and an anion-containing salt having a fluoro group and a sulfonyl group. The anion-containing salt having the fluoro group and the sulfonyl group includes at least one salt selected from among a salt of bisfluoroalkylsulfonylimide, a salt of fluoroalkylsulfonic acid, and a salt of tris(fluoroalkylsulfonyl)methide.

Conductive roller and image-forming apparatus having conductive roller

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Hyogo, Japan

Yogun Ki