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Ogaki Harunobu, Uematsu Hiroki, Ochi Atsushi: 電子写真感光体、プロセスカートリッジおよび電子写真装置 (JA), Electrophotographic photoreceptor, process cartridge, and electrophotographic apparatus (EN). Canon Kabushiki Kaisha, Ogaki Harunobu, Uematsu Hiroki, Ochi Atsushi, Okabe Masao, January 21, 2010: WO/2010/008095 (12 worldwide citation)

Disclosed is an electrophotographic photoreceptor that can continually exhibit the effect of relaxing stress of contact with a contact member or the like and, at the same time, has an excellent potential stability during repeated use.  Also disclosed are a process cartridge comprising the electropho ...


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Kikuchi Toshihiro, Maruyama Akio, Uematsu Hiroki: Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus. Canon, May 17, 2000: EP1001316-A1 (5 worldwide citation)

An electrophotographic photosensitive member is provided by forming a photosensitive layer on an electroconductive support. The photosensitive layer is provided with particularly excellent durability while retaining good electrophotographic performances when formed as a layer comprising a polymeriza ...


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OGAKI HARUNOBU, UEMATSU HIROKI, OCHI ATSUSHI: [fr] PHOTORÉCEPTEUR ÉLECTROPHOTOGRAPHIQUE, CARTOUCHE DE TRAITEMENT ET APPAREIL ÉLECTROPHOTOGRAPHIQUE, [de] ELEKTROPHOTOGRAPHISCHER PHOTOEMPFÄNGER, PROZESSKARTUSCHE UND ELEKTROPHOTOGRAPHISCHE VORRICHTUNG, [en] ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS. Canon, April 6, 2011: EP2306248-A1 (5 worldwide citation)

[en] An electrophotographic photosensitive member capable of persistently exerting an effect of mitigating contact stress with contact members and excellent also in potential stability during repeated use is provided, and a process cartridge and an electrophotographic apparatus having the electropho ...


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Amamiya Shoji, Nakata Koichi, Ikezue Tatsuya, Mitsui Takahiro, Shimada Akira, Uematsu Hiroki, Ishii Shuji, Maruyama Akio: Electrophotographic photoreceptor, production method for electrophotographic photoreceptor, process cartridge and electrophotographic device. Canon, December 20, 2006: EP1734411-A1 (4 worldwide citation)

An object of the present invention is to improve a phenomenon of the life-shortening of the endurance life due to scratch occurring when recesses of a fixed dimple shape are formed on the surface of the surface layer, in order to inhibit the chattering and folding back of a cleaning blade and the fr ...


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Uematsu Hiroki, Ogaki Harunobu, Kawahara Masataka, Ochi Atsushi, Shimada Akira, Maruyama Akio, Teramoto Kyoichi, Kikuchi Toshihiro, Koganei Akio, Sumida Takayuki: Electrophotographic photoreceptor, process cartridge, and electrophotographic apparatus. Canon, October 22, 2008: EP1983373-A1 (3 worldwide citation)

An electrophotographic photosensitive member is disclosed which is excellent in cleaning performance, has improved durability, and suppresses image defects in various environments. The electrophotographic photosensitive member has a support and a photosensitive layer provided on the support. Depress ...


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Ochi Atsushi, Ogaki Harunobu, Noguchi Kazunori, Uematsu Hiroki, Kawahara Masataka: (Ja) 電子写真感光体の製造方法, (En) Process for producing electrophotographic photoreceptor. Canon Kabushiki Kaisha, Ochi Atsushi, Ogaki Harunobu, Noguchi Kazunori, Uematsu Hiroki, Kawahara Masataka, OKABE Masao, January 22, 2009: WO/2009/011072 (3 worldwide citation)

(EN) A process for producing an electrophotographic photoreceptor provided at its surface with a configuration of depressions stably in high productivity. The process is characterized in that providing a coating liquid for surface layer containing a solvent in which a hydrophilic solvent and a hydro ...


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Maruyama Akio, Amamiya Shoji, Sekiya Michiyo, Uematsu Hiroki: Electrophotographic photosensitive member, process for producing electrophotographic photosensitive member, and process cartridge and electophotographic apparatus which have the electrophotographic photosensitive member. Canon, July 14, 1999: EP0928989-A1 (2 worldwide citation)

An electrophotographic photosensitive member has a support and a photosensitive layer formed thereon. The electrophotographic photosensitive member has a surface layer containing a charge-transporting material and a resin obtained by exposing to radiations a compound having an acryloyloxy group or m ...


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Ogaki Harunobu, Uematsu Hiroki, Kawahara Masataka, Ochi Atsushi, Teramoto Kyoichi, Shimada Akira, Maruyama Akio, Kikuchi Toshihiro, Koganei Akio, Sumida Takayuki: Electronic photographing photosensitive body, process cartridge, and electronic photographing device. Canon, October 22, 2008: EP1983376-A1 (2 worldwide citation)

An electrophotographic photosensitive member improved in cleaning performance and having a good image reproducibility, even in its long-term service, and a process cartridge and an electrophotographic apparatus which have the electrophotographic photosensitive member are provided. The electrophotogr ...


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Ochi Atsushi, Ogaki Harunobu, Noguchi Kazunori, Uematsu Hiroki, Kawahara Masataka: Process for producing electrophotographic photoreceptor. Canon, April 7, 2010: EP2172810-A1 (2 worldwide citation)

A method for preparing in high productivity and stably an electrophotographic photosensitive member having depressed portions on its surface, is provided. The method is characterized in that a coating liquid for a surface layer which includes a solvent including a hydrophilic solvent and a hydrophob ...