发明授权
- 专利标题: Electrophotographic photoconductor, electrophotographic apparatus and process cartridge
- 专利标题(中): 电子照相感光体,电子照相设备和处理盒
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申请号: US13715322申请日: 2012-12-14
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公开(公告)号: US08932787B2公开(公告)日: 2015-01-13
- 发明人: Eiji Kurimoto , Tadayoshi Uchida , Hideki Nakamura
- 申请人: Eiji Kurimoto , Tadayoshi Uchida , Hideki Nakamura
- 申请人地址: JP Tokyo
- 专利权人: Ricoh Company, Ltd.
- 当前专利权人: Ricoh Company, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2011-277844 20111220
- 主分类号: G03G5/14
- IPC分类号: G03G5/14 ; G03G5/047 ; G03G21/18 ; G03G5/06
摘要:
An electrophotographic photoconductor including: an electroconductive substrate; an intermediate layer; and a photoconductive layer, the intermediate layer and the photoconductive layer being on the electroconductive substrate, wherein the intermediate layer includes an inorganic pigment and a binder resin, wherein a volume ratio of the inorganic pigment in the intermediate layer is 30% by volume to 50% by volume, wherein the inorganic pigment comprises titanium oxide and a content of the titanium oxide in the inorganic pigment is 70% by mass to 90% by mass, wherein the inorganic pigment has a specific surface area of 70 m2/g to 140 m2/g, and wherein the intermediate layer has a volume resistivity at an electrical field intensity of 2.5×105 V/cm of 5×1011 Ω·cm to 1×1013 Ω·cm.
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