Patent application number | Description | Published |
20080199795 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, METHOD OF MANUFACTURING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photosensitive member having excellent electrophotographic properties, a method of manufacturing the electrophotographic photosensitive member, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member are provided. The surface layer of the electrophotographic photosensitive member includes a polymer having a specific repeating structural unit and fluorine-atom-containing resin particles. The fluorine-atom-containing particles in the surface layer are dispersed so as to be provided with particle sizes almost up to those of primary particles. | 08-21-2008 |
20090130576 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, METHOD OF MANUFACTURING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photosensitive member having excellent electrophotographic properties, a method of manufacturing the electrophotographic photosensitive member, and a process cartridge and an electrophotographic apparatus each having the electrophotographic photosensitive member are provided. The surface layer of the electrophotographic photosensitive member includes a polymer having a specific repeating structural unit and fluorine-atom-containing resin particles. The fluorine-atom-containing particles in the surface layer are dispersed so as to be provided with particle sizes almost up to those of primary particles. | 05-21-2009 |
20110158683 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photosensitive member having a surface layer which contains a silicon-containing compound in an amount of less than 0.6% by mass based on the whole solid content in the surface layer, where the silicon-containing compound in the surface layer has a siloxane moiety in an amount of 0.01% by mass or more, based on the whole solid content in the surface layer, and its surface has specific depressions. Also disclosed are a process cartridge and an electrophotographic apparatus which have the electrophotographic photosensitive member. | 06-30-2011 |
20110177438 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - A charge transport layer, which is the surface layer of an electrophotographic photosensitive member, contains a charge transporting material, and a polyester resin A having a repeating structural unit including a specific siloxane moiety and at least one of a polyester resin C having a specific structure and a polycarbonate resin D having a specific structure as a binder resin. The content of the siloxane moiety in the polyester resin A is from 5% by mass or more to 30% by mass or less based on the total mass of the polyester resin A. The charge transport layer includes a domain made of the polyester resin A in a matrix made of the charge transporting material and at least one of the polyester resin C and the polycarbonate resin D. | 07-21-2011 |
20120263494 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC APPARATUS, AND METHOD OF PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER - Provided is an electrophotographic photosensitive member which is excellent in terms of both continuous reduction of contact stress with contact members and the like and potential stability during repeated use. A charge transport layer which serves as a surface layer of an electrophotographic photosensitive member has a matrix-domain structure including a matrix containing a component [β] (polycarbonate resin D having a specific repeating structural unit) and a charge-transporting substance and domains containing a component [α] (polycarbonate resin A having a repeating structural unit including a specific siloxane moiety). | 10-18-2012 |
20120301181 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC APPARATUS, AND METHOD OF MANUFACTURING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER - An electrophotographic photosensitive member comprises a charge-transporting layer which is a surface layer of the electrophotographic photosensitive member; wherein the charge-transporting layer has a matrix-domain structure having: a matrix comprising: at least one resin selected from the group consisting of a polycarbonate resin C and a polyester resin D; and at least one charge-transporting substance selected from the group consisting of a compound represented by the following formula (1) and a compound represented by the following formula (1′), and a domain comprising a polycarbonate resin A. | 11-29-2012 |
20120301182 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC APPARATUS, AND METHOD OF MANUFACTURING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER - The present invention is an electrophotographic photosensitive member including a charge-transporting layer as the surface layer of the electrophotographic photosensitive member having a matrix-domain structure including: a matrix including a component β (at least one resin of a polycarbonate resin C having a specific repeating structural unit and a polyester resin D having a specific repeating structural unit), and γ (charge-transporting substance having a specific structure); and a domain including a component α (polycarbonate resin A having a repeating structural unit containing a specific siloxane moiety). | 11-29-2012 |
20130202326 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC APPARATUS, AND METHOD OF MANUFACTURING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER - An electrophotographic photosensitive member comprises a charge-transporting layer which is a surface layer of the electrophotographic photosensitive member; wherein the charge-transporting layer has a matrix-domain structure having: a matrix comprising a component [β] and a component [γ] (charge-transporting substances having specific structures), and a domain comprising a component [α](resin [α1], or resin [α1] and resin [α2]). | 08-08-2013 |
20130202327 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - Provided is an electrophotographic photosensitive member, including: a support; and a photosensitive layer, which is provided on the support, in which: a surface layer of the electrophotographic photosensitive member includes a terminal siloxane-containing polyester resin having a specific structure; and a lower layer provided in contact with the surface layer includes a polycarbonate resin, a polyester resin, or a polyvinyl acetal resin, having a specific structure. | 08-08-2013 |
20130236823 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC APPARATUS, AND METHOD OF MANUFACTURING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER - An electrophotographic photosensitive member comprises a charge-transporting layer which is a surface layer of the electrophotographic photosensitive member; wherein the charge-transporting layer has a matrix-domain structure having: a matrix comprising a component β and a component γ, and a domain comprising a component α. | 09-12-2013 |
20140023961 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER,PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC APPARATUS AND METHOD OF MANUFACTURING THE ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER - A charge-transporting layer, which is a surface layer of an electrophotographic photosensitive member, has a matrix-domain structure having a matrix containing constituent β (a polycarbonate resin having a predetermined repeating structural unit) and a charge-transporting substance, and a domain containing constituent α (a polycarbonate resin having a repeating structural unit having a predetermined siloxane moiety). | 01-23-2014 |
20140023962 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC APPARATUS AND METHOD OF MANUFACTURING THE ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER - A charge-transporting layer, which is a surface layer of an electrophotographic photosensitive member, has a matrix-domain structure having a matrix containing constituent β (a polyester resin having a predetermined repeating structural unit) and a charge-transporting substance, and a domain containing constituent α (a polycarbonate resin having a repeating structural unit having a predetermined siloxane moiety). | 01-23-2014 |
20140154620 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, METHOD OF PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photosensitive member includes a support, an undercoat layer formed on the support, and a photosensitive layer formed on the undercoat layer. The undercoat layer is an electron transporting layer and contains a metal salt of organic acid having at least one metal element selected from Fe, Co, Ni, Cu, and Zn. | 06-05-2014 |
20140212806 | METHOD FOR PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER - A method for producing an electrophotographic photosensitive member including an undercoat layer includes preparing a coating liquid for an undercoat layer containing zinc oxide particles, a polyol, a blocked isocyanate compound whose isocyanate group is blocked with a specific structure, and a solvent mixture, in which the solvent mixture contains a monohydric alcohol in an amount of 1 chemical equivalent or more based on the specific structure and 90% by mass or less based on the total mass of the solvent mixture, and a ketonic solvent and/or a cyclic ether solvent in an amount of 7% by mass or more based on the total mass of the solvent mixture. | 07-31-2014 |