Fuji Xerox Co., Ltd.

Fujifilm Business Innovation Corp.

Shogo Tomari

Minoru Rokutan

Hiroyuki Miura

Masato Ono

Masayuki Seko

Yuki Tagawa

Yuma Tanaka

Kosuke Narita

Wataru Yamada

Koichi Matsumoto

Junji Okada

Tomotake Inagaki

Takuro Hoshio

Yasuhiko Kinuta

Kenji Omori

Tadashi Suto

Hiroko Kobayashi

Monta Ido

Keiko Matsuki

Ryuji Watanabe

Takahiko Hattori

A conductive member contains silicone rubber and a conductive agent. The total content of cyclic dimethylpolysiloxane having 3 to 24 silicon atoms in the conductive member is 5000 ppm or less.

Conductive member, bioelectrode, and biosignal measuring device

A charging member includes a conductive substrate, an elastic layer disposed on the conductive substrate, and a surface layer disposed on the elastic layer. Regarding the surface of the surface layer, in the axial direction, the ratio of the mean spacing of profile irregularities Sm to the ten-point mean roughness Rz and the reduced peak height Spk respectively satisfy 15&#x2264;Sm/Rz&#x2264;35 and Spk&#x2264;5 &#x3bc;m.

Charging member, charging device, process cartridge, and image forming apparatus

A conductive member includes a conductive substrate; and a conductive elastic layer disposed on the conductive substrate and exhibiting ionic conduction. The conductive elastic layer contains an elastic material, which contains epichlorohydrin rubber, and an anti-aging agent, and the amount of free chlorine ions in the conductive elastic layer is 1 &#x3bc;g/g or more and 80 &#x3bc;g/g or less.

Conductive member, changing device, transfer device, process cartridge, and image forming apparatus

A height of convexities in a 0.7-mm-square area of a surface of the charging member is measured at five or more different positions in an axial direction and calculated. A height of a position where the charging member occupies 0.01 area % from a highest portion is defined as a reference height. An average proportion of areas occupied by the charging member at a position 1.7 &#x3bc;m lower than the reference height is 2 area % or less relative to 100 area % of the 0.7-mm-square area.

A conductive member includes a conductive substrate; and a conductive elastic layer disposed on the conductive substrate and exhibiting ionic conduction. The conductive elastic layer contains an elastic material, which contains epichlorohydrin rubber, and a layered inorganic compound, and the amount of free chlorine ions in the conductive elastic layer is 1 &#x3bc;g/g or more and 80 &#x3bc;g/g or less.

Conductive member, charging device, transfer device, process cartridge, and image forming apparatus

A conductive member includes a conductive substrate; and a conductive elastic layer disposed on the conductive substrate and exhibiting ionic conduction. The conductive elastic layer contains an elastic material containing epichlorohydrin rubber, and the amount of free chlorine ions in the conductive elastic layer is 1 &#x3bc;g/g or more and 80 &#x3bc;g/g or less.

A roller member includes a core member; a substantially round-cylindrical elastic member through which the core member extends and having chamfered portions, the chamfered portions each provided at two respective ends of the elastic member and having a surface roughness of about 50 &#x3bc;m or less; and a coating film provided over an outer peripheral surface of the elastic member and at least a part of each of the chamfered portions.

Roller member, image carrier device, and image forming apparatus

An elastic member includes a support and an elastic layer on the support. The elastic layer contains a rubber material and a softener having a number average molecular weight Mn of about 600 to about 1,000 and a ratio (Mw/Mn) of weight average molecular weight Mw to number average molecular weight Mn of about 2.5 or less.

Elastic member, process cartridge, and image-forming apparatus

A conductive member includes: a conductive support; a conductive elastic layer that is provided on the conductive support and includes a vulcanizate of an unvulcanized rubber material; and a surface layer that is provided on the conductive elastic layer and includes a cured product of an oxygen-curable unsaturated compound.

Conductive member, process cartridge, and image forming apparatus

A charging member includes a conductive support, a conductive adhesive layer that is arranged on the conductive support and contains a crosslinking agent having two or more functional groups reacting with a halogen group and a resin having a halogen group, and an elastic layer that is arranged so as to contact with the conductive adhesive layer and contains a rubber material having a halogen group, wherein the resin having a halogen group in the conductive adhesive layer and the rubber material having a halogen group in the elastic layer are cross-linked by reaction with the crosslinking agent at least at an interface between the conductive adhesive layer and the elastic layer.

Charging member, charging device, process cartridge, image forming apparatus, and method of manufacturing charging member

Disclosed is a roll member including a core, and an elastic layer arranged on the core, the elastic layer containing a rubber material and polyalphaolefin.

Roll member, charging unit, process cartridge and image forming apparatus

A charging member includes a conductive support, and a conductive elastic layer that is provided on an outer peripheral surface of the conductive support and includes a rubber material and inorganic particles, and in which an average dispersion degree of aggregates of the inorganic particles is 95% or greater and a maximum particle diameter of the aggregates of the inorganic particles is 200 &#x3bc;m or less.

Charging member, charging unit, process cartridge, image forming apparatus, and method of manufacturing charging member

A charging member includes a conductive support and a conductive elastic layer on the conductive support. The conductive elastic layer is made of a crosslinked product of a rubber composition containing a ternary epichlorohydrin rubber that is a copolymer of epichlorohydrin, an alkylene oxide, and allyl glycidyl ether; 4,4'-dithiodimorpholine; and a vulcanization accelerator that is a metal salt in an amount corresponding to 0.003 to 0.04 mol of metal per 100 g of the ternary epichlorohydrin rubber. The conductive elastic layer has a compression set of 20% or less.

Charging member, image-forming apparatus, and process cartridge

A charging member includes a conductive metal shaft and a conductive elastic layer. The conductive elastic layer comprises a rubber material containing 50% to 100% by weight of epichlorohydrin rubber containing 56 mol % or more of an ethylene oxide and a calcium oxide having an average particle size D50 of 18 &#x3bc;m or smaller.

Charging member, process unit cartridge, and image forming apparatus

A rubber composition for a conductive roller that has at least an elastic layer above an outer periphery of a shaft member having conductivity is provided, the rubber composition including: a binary epichlorohydrin rubber; and a vulcanizing agent that contains at least sulfur, wherein the rubber composition does not contain a quinoxaline vulcanizing agent and a triazine vulcanizing agent.

Epichlorohydrin composition for conductive roller, conductive roller, charging unit, image forming apparatus, process cartridge, and method of manufacturing conductive roller

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Kanagawa, Japan

Shogo Tomari