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Michiyo Sekiya, Mishima-Shi JP

Michiyo Sekiya, Mishima-Shi JP

Patent application numberDescriptionPublished
20080233499ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photosensitive member having a charge generation layer containing a phenanthrene compound, a phenanthroline compound or an acenaphthene compound. Also disclosed are a process cartridge and an electrophotographic apparatus which have the electrophotographic photosensitive member.09-25-2008
20090297218ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photosensitive member having a charge generation layer containing a phenanthrene compound, a phenanthroline compound or an acenaphthene compound. Also disclosed are a process cartridge and an electrophotographic apparatus which have the electrophotographic photosensitive member.12-03-2009
20110104597ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - Provided is an electrophotographic photosensitive member having a conductive support, an intermediate layer provided on the conductive support, and a photosensitive layer provided on the intermediate layer in which the intermediate layer contains a polyolefin resin containing a specific component at a specific mass ratio, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member.05-05-2011
20110104598ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER,PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - The electrophotographic photosensitive member contains a support; and a first intermediate layer, a second intermediate layer and a photosensitive layer which are provided on the support in this order, in which the second intermediate layer contains a polyolefin resin and a metal oxide particle having a volume-average particle diameter of 20 nm or less, and the first intermediate layer contains a metal oxide particle, and the volume-average particle diameter of the metal oxide particle contained in the first intermediate layer is 10 times or more to 200 times or less as large as the volume average particle diameter of the metal oxide particle contained in the second intermediate layer.05-05-2011
20110104599ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS - The electrophotographic photosensitive member includes a support; an intermediate layer, a charge generation layer and a charge transport layer which are provided on a conductive support in this order, in which the intermediate layer contains an ethylene-acrylic acid binary copolymer and a polyolefin resin in which repeating structural units are contained in a particular ratio.05-05-2011
20110104601ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - The present invention relates to an electrophotographic photosensitive member obtained by providing, on a conductive support, a conductive layer containing conductive particles having a volume-average particle diameter of 0.1 μm or more, an intermediate layer, and a photosensitive layer in the stated order in which the conductive layer contains a polyolefin resin containing a specific repeating structural unit at a specific ratio, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member.05-05-2011
20110129768ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, METHOD FOR PRODUCING THE SAME, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - According to aspects of the present invention, an electrophotographic photosensitive member includes a surface layer comprising a cured resin obtained by polymerizing a compound having at least one polymerizable functional group. Aspects of the present invention provide an electrophotographic photosensitive member whose surface layer comprises a compound (urea derivative) having a certain structure, a method for producing the electrophotographic photosensitive member, and a process cartridge and an electrophotographic apparatus including the electrophotographic photosensitive member.06-02-2011
20110143273ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - The present invention relates to an electrophotographic photosensitive member obtained by providing an intermediate layer and a photosensitive layer on a conductive support in the stated order, the electrophotographic photosensitive member being characterized in that the intermediate layer contains a specific polyolefin resin and a specific organic electron-transporting substance, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member.06-16-2011

Patent applications by Michiyo Sekiya, Mishima-Shi JP