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    PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS
    1.
    发明公开
    PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS 审中-公开

    公开(公告)号：US20240361709A1

    公开(公告)日：2024-10-31

    申请号：US18646412

    申请日：2024-04-25

    申请人： CANON KABUSHIKI KAISHA

    发明人： CHIHARU AKIYAMA ,  KANAME WATARIGUCHI ,  TSUTOMU NISHIDA

    IPC分类号： G03G5/147 ,  G03G21/18

    CPC分类号： G03G5/14734 ,  G03G5/14795 ,  G03G21/1814 ,  G03G21/1857

    摘要： Provided is a process cartridge capable of suppressing the occurrence of a banding image that is detachably attachable onto a main body of an electrophotographic apparatus. A developing roller and a toner supply roller are configured to be rotated so that R represented by the following formula (E1) satisfies 1.2≤R≤1.5 and are configured so that a movement direction of a surface of the developing roller is opposite to a movement direction of a surface of the toner supply roller at a contact position with respect to the toner supply roller: R=VRS/VD Formula (E1) (in the formula (E1), VRS represents an absolute value of a peripheral speed [m/s] of the toner supply roller, and VD represents an absolute value of a peripheral speed [m/s] of the developing roller). An electrophotographic photosensitive member includes a surface layer containing a polyarylate resin including a structural unit represented by the following formula (A1).

    ELECTROPHOTOGRAPHIC PHOTORECEPTOR, CARTRIDGE USING SAME, AND IMAGE FORMING DEVICE
    4.
    发明公开
    ELECTROPHOTOGRAPHIC PHOTORECEPTOR, CARTRIDGE USING SAME, AND IMAGE FORMING DEVICE 审中-公开

    公开(公告)号：US20230259046A1

    公开(公告)日：2023-08-17

    申请号：US18136537

    申请日：2023-04-19

    申请人： Mitsubishi Chemical Corporation

    发明人： Takahiro Choda ,  Yuka Nagao ,  Akira Ando

    IPC分类号： G03G5/147 ,  G03G5/047

    CPC分类号： G03G5/14791 ,  G03G5/14795 ,  G03G5/14734 ,  G03G5/047

    摘要： There is provided an electrophotographic photoreceptor including: a conductive support; and a photosensitive layer and a protective layer containing a cured product obtained by curing a curable compound, which are sequentially disposed on the conductive support. An area ratio A/B is 0.0045 or less, where A is an absorbance area at a wavelength of 1647 cm−1 to 1627 cm−1 and B is an absorbance area of a peak at a wavelength of 1800 cm−1 to 1647 cm−1 in an infrared absorption spectrum measurement of the protective layer. The photosensitive layer contains at least a hole transport material (HTM) and a radical acceptor compound. The electrophotographic photoreceptor is an electrophotographic photoreceptor including a protective layer with a high curing degree and having good initial electrical characteristics, excellent strong exposure characteristics, and excellent transfer repeatability.

    Electrophotographic photoreceptor
    6.
    发明授权
    Electrophotographic photoreceptor 有权

    公开(公告)号：US09946176B2

    公开(公告)日：2018-04-17

    申请号：US15074350

    申请日：2016-03-18

    申请人： Konica Minolta, Inc.

    发明人： Seisuke Maeda ,  Kazuhiro Kuramochi

    IPC分类号： G03G5/147

    CPC分类号： G03G5/14734 ,  G03G5/14704 ,  G03G5/14726

    摘要： Provided is an electrophotographic photoreceptor containing a conductive support having thereon a photosensitive layer and a surface layer laminated in that order, wherein the surface layer contains a conductive filler having a number average primary particle size of 10 to 500 nm in a resin; and the conductive filler is treated with a surface treatment agent containing a fluoroalkyl (meth)acrylate/(meth)acrylic acid copolymer.

    Electrophotographic device member
    10.
    发明授权
    Electrophotographic device member 有权
    电子照相装置构件

    公开(公告)号：US09436151B2

    公开(公告)日：2016-09-06

    申请号：US14691073

    申请日：2015-04-20

    申请人： SUMITOMO RIKO COMPANY LIMITED

    发明人： Yosuke Hayashi ,  Shuichi Egawa ,  Keiichi Inoue ,  Kazushi Yamaguchi ,  Kazuhiro Iida ,  Kentaro Imai ,  Masanori Ishida

    IPC分类号： G03G15/00 ,  G03G21/00 ,  G03G15/02 ,  G03G15/08 ,  G03G15/16 ,  G03G5/147 ,  C08G77/38 ,  G03G9/16

    CPC分类号： G03G21/0017 ,  C08G77/38 ,  G03G5/14726 ,  G03G5/14734 ,  G03G5/14786 ,  G03G9/16 ,  G03G15/0233 ,  G03G15/0818 ,  G03G15/1685

    摘要： An electrophotographic device member can be configured as a roll member 1, a blade member 2, a belt member 3 or the like, and a modified rubber elastic body 12 is used as a material for a portion including the surfaces of the respective members. The modified rubber elastic body 12 has a rubber elastic body 121 having rubber elasticity and a surface-treated layer 122 composed of a cured product of photocurable composition impregnated into the rubber elastic body 121 from the surface thereof. The photocurable composition is configured to include a (meth)acryl monomer, a photopolymerizable polymer having a silicone group and/or a fluorine-containing group and a (meth)acryloyl group in a molecule, and a photopolymerization initiator.

    摘要翻译： 电子照相装置构件可以被构造为辊构件1，叶片构件2，带构件3等，并且改性橡胶弹性体12用作包括各构件的表面的部分的材料。 改性橡胶弹性体12具有橡胶弹性体，具有橡胶弹性的橡胶弹性体121和从其表面浸渍在橡胶弹性体121中的光固化性组合物的固化物构成的表面处理层122。 光固化性组合物构成为包含（甲基）丙烯酰基单体，分子内具有硅氧烷基和/或含氟基和（甲基）丙烯酰基的光聚合性聚合物和光聚合引发剂。