公开(公告)号：US20200012205A1

公开(公告)日：2020-01-09

申请号：US16260141

申请日：2019-01-29

申请人： FUJI XEROX CO.,LTD.

发明人： Yoichi KIGOSHI ,  Takeshi IWANAGA ,  Nobuyuki TORIGOE ,  Masaki HIRAKATA ,  Hideya KATSUHARA ,  Keisuke KUSANO

IPC分类号： G03G5/043 ,  G03G5/05 ,  G03G21/18

摘要： An electrophotographic photoreceptor includes a conductive substrate; an undercoat layer on the conductive substrate; a charge generating layer on the undercoat layer; a charge transporting layer on the charge generating layer; and an inorganic protective layer on the charge transporting layer. The undercoat layer, the charge transporting layer, and the inorganic protective layer each have a film elastic modulus of 5 GPa or more.

公开(公告)号：US20190094722A1

公开(公告)日：2019-03-28

申请号：US15916251

申请日：2018-03-08

申请人： FUJI XEROX CO., LTD.

发明人： Masaki HIRAKATA ,  Hideya KATSUHARA ,  Nobuyuki TORIGOE ,  Yasutaka MATSUMOTO ,  Takeshi IWANAGA

IPC分类号： G03G21/00 ,  G03G5/043

摘要： An image forming apparatus includes a photoreceptor that includes a conductive substrate, a photosensitive layer, and an inorganic surface layer arranged in that order, the inorganic surface layer containing a group 13 element and oxygen; a charging unit; an electrostatic image-forming unit; a developing unit; a transfer unit; a cleaning unit that performs cleaning by causing the cleaning blade to contact the surface of the photoreceptor; and a supply unit that supplies a fatty acid metal salt to a position where the cleaning blade in the cleaning unit contacts the photoreceptor. When the fatty acid metal salt is supplied, a portion of the surface of the photoreceptor downstream of the supply unit and upstream of the cleaning unit in a rotating direction of the photoreceptor is covered with a metal derived from the fatty acid metal salt at a coverage of about 40% or more.

公开(公告)号：US20130344422A1

公开(公告)日：2013-12-26

申请号：US13856139

申请日：2013-04-03

申请人： FUJI XEROX CO., LTD.

发明人： Takeshi IWANAGA ,  Masaki HIRAKATA ,  Hideya KATSUHARA ,  Tomoya SASAKI ,  Nobuyuki TORIGOE ,  Takashi IMAI

IPC分类号： G03G15/00

CPC分类号： G03G5/14704 ,  G03G5/047 ,  G03G5/08 ,  G03G5/14708

摘要： An electrophotographic photoreceptor includes a conductive substrate, an organic photosensitive layer that is provided on the conductive substrate, and an inorganic protective layer that is provided on the organic photosensitive layer, wherein the inorganic protective layer includes a first layer, a second layer, and a third layer in this order from the organic photosensitive layer side and satisfies the relationship of the following expression (1): ρ3≦ρ1

摘要翻译： 电子照相感光体包括导电性基材，设置在导电性基材上的有机感光层和设置在有机感光层上的无机保护层，其中无机保护层包括第一层，第二层和 第三层，并且满足以下表达式（1）的关系：rho3 @ rho1

公开(公告)号：US20170090310A1

公开(公告)日：2017-03-30

申请号：US15048363

申请日：2016-02-19

申请人： FUJI XEROX CO., LTD.

发明人： Hideya KATSUHARA ,  Takashi IMAI ,  Takeshi IWANAGA ,  Masaki HIRAKATA ,  Tatsuki SANO

IPC分类号： G03G15/00

CPC分类号： G03G5/0564 ,  G03G5/0433 ,  G03G5/0436 ,  G03G5/0507 ,  G03G5/087 ,  G03G5/14704 ,  G03G5/14756

摘要： An electrophotographic photoreceptor includes an electroconductive substrate, a photosensitive layer provided on the electroconductive substrate, and an inorganic surface layer provided on the photosensitive layer, wherein a layer constituting an outermost surface of the photosensitive layer contains from 30% by weight to 70% by weight of silica particles and contains a biphenyl copolymerization type polycarbonate resin including a structural unit represented by the formula (PCA) and a structural unit represented by the formula (PCB) at a copolymerization ratio (PCA:PCB (molar ratio)) of 10:90 to 50:50: wherein, RP1, RP2, RP3, and RP4 each represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 5 to 7 carbon atoms, or an aryl group having 6 to 12 carbon atoms, and XP1 represents a phenylene group, a biphenylene group, a naphthylene group, an alkylene group, or a cycloalkylene group.

公开(公告)号：US20160266536A1

公开(公告)日：2016-09-15

申请号：US14810719

申请日：2015-07-28

申请人： FUJI XEROX CO., LTD.

发明人： Hiroaki AKAMATSU ,  Masaki HIRAKATA ,  Tsutomu SUGIMOTO

IPC分类号： G03G21/00

CPC分类号： G03G21/0017 ,  G03G15/161 ,  G03G21/0005 ,  G03G21/0011 ,  G03G21/0029 ,  G03G21/10 ,  G03G2221/0005

摘要： An image forming apparatus includes an image bearing member having an inorganic protective layer on a surface thereof, a cleaning blade having an inclined surface cut out at a corner portion on a side of the image bearing member, and a support portion that supports the cleaning blade so that the inclined surface is in contact with the image bearing member.

摘要翻译： 图像形成装置包括在其表面上具有无机保护层的图像承载部件，具有在图像承载部件的一侧的角部切割的倾斜表面的清洁刮板以及支撑清洁刮板 使得倾斜表面与图像承载部件接触。

公开(公告)号：US20180067443A1

公开(公告)日：2018-03-08

申请号：US15453488

申请日：2017-03-08

申请人： FUJI XEROX CO., LTD.

发明人： Masaki HIRAKATA ,  Takashi IMAI

IPC分类号： G03G21/00

CPC分类号： G03G15/75 ,  G03G21/0005 ,  G03G21/0011 ,  G03G21/007 ,  G03G21/0076 ,  G03G2221/001

摘要： An image forming apparatus includes an electrophotographic photoreceptor, a charging device, an electrostatic latent image forming device, a developing device, a transfer device, and a cleaning device, and further includes an intercepting device that includes an intercepting member separated from the electrophotographic photoreceptor by a gap so that a distance from the surface of the electrophotographic photoreceptor to the intercepting member is about 0.3 to 0.9 (inclusive) times a volume-average particle size of toner particles. The intercepting member is used to intercept residual toner particles at a position downstream of the transfer device and upstream of the cleaning device in a rotation direction of the electrophotographic photoreceptor, the residual toner particles remaining on the surface of the electrophotographic photoreceptor.

公开(公告)号：US20170242351A1

公开(公告)日：2017-08-24

申请号：US15202985

申请日：2016-07-06

申请人： FUJI XEROX CO., LTD.

发明人： Tatsuki SANO ,  Hideya KATSUHARA ,  Masaki HIRAKATA ,  Takeshi IWANAGA

IPC分类号： G03G15/00

CPC分类号： G03G5/047 ,  G03G5/0503 ,  G03G5/0507 ,  G03G5/051 ,  G03G5/0564 ,  G03G5/0614 ,  G03G5/0696 ,  G03G5/14704 ,  G03G5/14708 ,  G03G15/75

摘要： An electrophotographic photoreceptor includes a conductive substrate, an organic photosensitive layer on the conductive substrate, and an inorganic protective layer on the organic photosensitive layer. A layer that constitutes a surface of the organic photosensitive layer contains a charge transport material, a binder resin, silica particles, and a silicone compound.

公开(公告)号：US20170090339A1

公开(公告)日：2017-03-30

申请号：US15015590

申请日：2016-02-04

申请人： FUJI XEROX CO., LTD.

发明人： Takeshi IWANAGA ,  Takashi IMAI ,  Hideya KATSUHARA ,  Masaki HIRAKATA ,  Yoichi KIGOSHI ,  Nobuyuki TORIGOE ,  Fumiaki MERA

IPC分类号： G03G15/00

CPC分类号： G03G15/04036 ,  G03G5/0436 ,  G03G5/14704 ,  G03G15/75 ,  G03G21/1814

摘要： A unit for an image forming apparatus includes an electrophotographic photoreceptor that includes a conductive substrate, a photosensitive layer provided on the conductive substrate, and a surface layer provided so as to contact with an outermost surface of the photosensitive layer, and an exposure section that exposes the electrophotographic photoreceptor with a light having a wavelength (λ) (nm) so as to form an electrostatic latent image on a charged surface of the electrophotographic photoreceptor, wherein a surface roughness (Rz1) (nm) of the outermost surface of the photosensitive layer satisfies an expression of [(Rz1)≧(λ)/(4×(n2))] where a refractive index of the surface layer is set as (n2), and an outermost surface of the surface layer has a surface shape different from the outermost surface of the photosensitive layer.

公开(公告)号：US20170090312A1

公开(公告)日：2017-03-30

申请号：US15003409

申请日：2016-01-21

申请人： FUJI XEROX Co., Ltd.

发明人： Masaki HIRAKATA ,  Hideya KATSUHARA ,  Yoichi KIGOSHI ,  Takeshi IWANAGA ,  Nobuyuki TORIGOE ,  Takashi IMAI ,  Tatsuki SANO

IPC分类号： G03G15/00

CPC分类号： G03G5/14704 ,  G03G5/0436 ,  G03G5/0507 ,  G03G5/0542 ,  G03G5/0614 ,  G03G5/0696 ,  G03G21/18

摘要： An electrophotographic photosensitive member includes a conductive base; an organic photosensitive layer disposed on the conductive base, the organic photosensitive layer including a layer that constitutes a surface and contains a charge transport material, a binder resin, and silica particles in an amount of about 40% by weight or more; and an inorganic protective layer disposed on the organic photosensitive layer and having a surface roughness Ra of about 5 nm or less.

公开(公告)号：US20190302632A1

公开(公告)日：2019-10-03

申请号：US16048531

申请日：2018-07-30

申请人： FUJI XEROX CO., LTD.

发明人： Nobuyuki TORIGOE ,  Takeshi IWANAGA ,  Masaki HIRAKATA ,  Hideya KATSUHARA ,  Yoichi KIGOSHI ,  Yukimi KAWABATA

IPC分类号： G03G5/147 ,  G03G15/00 ,  G03G21/18 ,  G03G5/06 ,  G03G5/05

摘要： Provided is an electrophotographic photoreceptor including: a conductive substrate; a single-layer type photosensitive layer that is provided on the conductive substrate; an inorganic protective layer that is provided on the single-layer type photosensitive layer; wherein layers that are interposed between the conductive substrate and the inorganic protective layer have a total thickness of 10 μm to 25 μm.