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    ELECTROPHOTOGRAPHIC APPARATUS, PROCESS CARTRIDGE, AND CARTRIDGE SET
    1.
    发明申请
    ELECTROPHOTOGRAPHIC APPARATUS, PROCESS CARTRIDGE, AND CARTRIDGE SET 有权

    公开(公告)号：US20210116860A1

    公开(公告)日：2021-04-22

    申请号：US17071283

    申请日：2020-10-15

    申请人： CANON KABUSHIKI KAISHA

    发明人： Yoshitaka Suzumura ,  Hiroyuki Tomono ,  Takuya Mizuguchi ,  Osamu Matsushita ,  Shunsuke Matsushita ,  Masahiro Kurachi ,  Kazuhiro Yamauchi

    IPC分类号： G03G21/18 ,  G03G9/087 ,  G03G9/08 ,  C08K3/04 ,  C08K3/26 ,  C08L19/00

    摘要： An electrophotographic apparatus comprising an electrophotographic photosensitive member, a charging device and a developing device, wherein the charging device comprises a conductive member arranged to be capable of contacting the electrophotographic photosensitive member, a conductive layer of the conductive member comprises a matrix domain structure, at least a part of the domains Dt is exposed at the conductive member outer surface, the matrix has a volume resistivity R1 of larger than 1.00×1012 Ω·cm, the domains Dt has a volume resistivity of smaller than R1, the developing device comprises the toner, domains Dc formed of the crystalline material exist in a cross section of the toner, distances between adjacent wall surfaces of the domains Dc is from 30 to 1,100 nm, and a weight-average particle diameter D4 of the toner and distances Dms between adjacent wall surfaces between the domains Dt satisfies D4≥Dms.

    Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
    3.
    发明授权
    Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus 有权
    电子照相感光构件，处理盒和电子照相设备

    公开(公告)号：US09372419B2

    公开(公告)日：2016-06-21

    申请号：US14418868

    申请日：2013-08-29

    申请人： CANON KABUSHIKI KAISHA

    发明人： Haruyuki Tsuji ,  Atsushi Fujii ,  Kazuhisa Shida ,  Nobuhiro Nakamura ,  Hideaki Matsuoka ,  Hiroyuki Tomono

    IPC分类号： G03G15/00 ,  G03G5/08 ,  G03G5/087 ,  G03G5/10 ,  G03G5/14

    CPC分类号： G03G5/087 ,  G03G5/104 ,  G03G5/144

    摘要： Provided are an electrophotographic photosensitive member in which a residual potential hardly increases at the time of image formation, a pattern memory hardly occurs, and the crack of a conductive layer hardly occurs, and a process cartridge and an electrophotographic apparatus each including the electrophotographic photosensitive member. To this end, the conductive layer of the electrophotographic photosensitive member contains a titanium oxide particle coated with tin oxide doped with phosphorus, a tin oxide particle doped with phosphorus, and a binding material, and when a total volume of the conductive layer is represented by VT, a total volume of the titanium oxide particle coated with tin oxide doped with phosphorus in the conductive layer is represented by V1P, and a total volume of the tin oxide particle doped with phosphorus in the conductive layer is represented by V2P, the VT, the V1P, and the V2P satisfy the following expressions: 2≦{(V2P/VT)/(V1P/VT)}×100≦25 and 15≦{(V1P/VT)+(V2P/VT)}×100≦45.

    摘要翻译： 提供了一种电子照相感光构件，其中在图像形成时残留电位几乎不增加，几乎不发生图案记忆，并且几乎不发生导电层的裂纹;以及处理盒和电子照相设备，每个包括电子照相感光构件 。 为此，电子照相感光构件的导电层包含涂覆有掺杂有磷的氧化锡，掺杂磷的氧化锡颗粒和粘合材料的氧化钛颗粒，并且当导电层的总体积由 VT中，导电层中涂覆有掺杂磷的氧化锡的氧化钛颗粒的总体积由V1P表示，导电层中掺杂有磷的氧化锡颗粒的总体积由V2P表示，VT， V1P和V2P满足以下表达式：2＆nlE; {（V2P / VT）/（V1P / VT）}×100＆nlE; 25和15＆nlE; {（V1P / VT）+（V2P / VT）}×100＆ 。

    Toner
    5.
    发明授权
    Toner 有权

    公开(公告)号：US11112713B2

    公开(公告)日：2021-09-07

    申请号：US16802814

    申请日：2020-02-27

    申请人： CANON KABUSHIKI KAISHA

    发明人： Hiroki Akiyama ,  Shuhei Moribe ,  Hiroyuki Tomono ,  Tatsuya Saeki ,  Hiroki Kagawa ,  Atsuhiko Ohmori ,  Katsuhisa Yamazaki

    IPC分类号： G03G9/087

    摘要： A toner including a toner particle containing a binder resin, wherein the binder resin contains a crystalline resin, and in viscoelasticity measurement of the toner with Tp being a peak temperature of an endothermic peak derived from the crystalline resin in DSC of the toner, given G′(Tp−5, 0.01 Hz) as a storage modulus at a temperature of Tp−5° C. and a frequency of 0.01 Hz, G′(Tp−5, 10 Hz) as a storage modulus at a temperature of Tp−5° C. and a frequency of 10 Hz, and G′(Tp−30, 10 Hz) as a storage modulus at a temperature of Tp−30° C. and a frequency of 10 Hz, the following formulae are satisfied: G′(Tp−30,10 Hz)/G′(Tp−5,0.01 Hz)≤1.40 G′(Tp−5,10 Hz)/G′(Tp−5,0.01 Hz)≤2.20.

    ELECTROPHOTOGRAPHIC APPARATUS, PROCESS CARTRIDGE AND CARTRIDGE SET
    6.
    发明申请
    ELECTROPHOTOGRAPHIC APPARATUS, PROCESS CARTRIDGE AND CARTRIDGE SET 有权

    公开(公告)号：US20210116829A1

    公开(公告)日：2021-04-22

    申请号：US17071535

    申请日：2020-10-15

    申请人： CANON KABUSHIKI KAISHA

    发明人： Hiroyuki Tomono ,  Yoshitaka Suzumura ,  Takuya Mizuguchi ,  Osamu Matsushita ,  Masahiro Kurachi ,  Kazuhiro Yamauchi ,  Issei Imamura

    IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/087 ,  C08L19/00 ,  G03G15/02

    摘要： An electrophotographic apparatus comprising an electrophotographic photosensitive member, a charging device and a developing device, wherein the charging device comprises a conductive member arranged to be capable of contacting the electrophotographic photosensitive member, the conductive layer at the outer surface of the conductive member comprises a matrix and a plurality of domains dispersed in the matrix, at least some of the domains are exposed at the outer surface of the conductive member, the matrix has a volume resistivity R1 of larger than 1.00×1012 Ω·cm, the volume resistivity R1 of the matrix is 1.0×105 times or more a volume resistivity R2 of the domains, the developing device comprises the toner comprising a toner particle and a silica fine particle, and a coverage ratio of the toner surface with the silica fine particles is from 62.0% by area to 100.0% by area as determined by X-ray photoelectron spectroscopy.

    Electrophotographic photosensitive member, method of producing electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
    9.
    发明授权
    Electrophotographic photosensitive member, method of producing electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus 有权
    电子照相感光构件，电子照相感光构件的制造方法，处理盒和电子照相设备

    公开(公告)号：US09304416B2

    公开(公告)日：2016-04-05

    申请号：US14568511

    申请日：2014-12-12

    申请人： CANON KABUSHIKI KAISHA

    发明人： Kazunori Noguchi ,  Yuka Ishiduka ,  Nobuhiro Nakamura ,  Atsushi Okuda ,  Hiroyuki Tomono

    IPC分类号： G03G5/14

    CPC分类号： G03G5/14 ,  G03G5/142

    摘要： Provided is an electrophotographic photosensitive member, including: a support; an undercoat layer formed on the support; and a photosensitive layer formed on the undercoat layer, in which the undercoat layer includes a cured product of a composition including (i) an isocyanate compound having a structure represented by the following specific formula (1), (ii) at least one resin selected from a polyvinyl acetal and an acrylic polyol; and (iii) a compound represented by any one of the specific formulae (A1) to (A8).

    摘要翻译： 提供一种电子照相感光构件，包括：支撑体; 形成在支撑体上的底涂层; 和形成在底涂层上的感光层，其中底涂层包括包含（i）具有由以下具体式（1）表示的结构的异氰酸酯化合物的组合物的固化产物，（ii）选择至少一种树脂 来自聚乙烯醇缩醛和丙烯酸多元醇; 和（iii）由具体式（A1）至（A8）中任一个表示的化合物。