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    ELECTROPHOTOGRAPHIC PHOTORECEPTOR, METHOD FOR PRODUCING THE SAME, AND ELECTROPHOTOGRAPHIC APPARATUS USING THE SAME
    31.
    发明申请
    ELECTROPHOTOGRAPHIC PHOTORECEPTOR, METHOD FOR PRODUCING THE SAME, AND ELECTROPHOTOGRAPHIC APPARATUS USING THE SAME 审中-公开

    公开(公告)号：US20180329318A1

    公开(公告)日：2018-11-15

    申请号：US16045144

    申请日：2018-07-25

    申请人： FUJI ELECTRIC CO., LTD.

    发明人： Toshiki TAKEUCHI ,  Seizo KITAGAWA ,  Kazuya SAITO

    IPC分类号： G03G5/047 ,  G03G5/05 ,  G03G5/06

    CPC分类号： G03G5/0564 ,  G03G5/047 ,  G03G5/05 ,  G03G5/056 ,  G03G5/0696

    摘要： An electrophotographic photoreceptor which, even when mounted on a high-image-quality monochrome high-speed printer or tandem color printer including a cleaner-less process of a non-magnetic single-component contact development system using a polymerized toner, inhibits the generation of fine black spots or color spots and suppresses the occurrence of toner filming during the initial printing under a high-temperature and high-humidity environment and thereby stably attains a high image quality in a variety of environments. The electrophotographic photoreceptor is a positively-chargeable electrophotographic photoreceptor which includes, on a conductive support, a single layer-type photosensitive layer that contains a charge generation material, a hole transport material, an electron transport material, and a binder resin. The charge generation material contains at least a titanyl phthalocyanine, and a contact angle between the surface of an outermost layer and water is in a range of 81° to 87°.

    Electrophotographic photoreceptor, process cartridge, and image-forming apparatus
    32.
    发明授权
    Electrophotographic photoreceptor, process cartridge, and image-forming apparatus 有权

    公开(公告)号：US10101678B2

    公开(公告)日：2018-10-16

    申请号：US15450162

    申请日：2017-03-06

    申请人： FUJI XEROX CO., LTD.

    发明人： Akihiro Kawasaki

    IPC分类号： G03G5/047 ,  G03G21/18 ,  G03G5/05 ,  G03G5/06 ,  G03G5/147

    摘要： An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer disposed on the conductive substrate which serves as an outermost surface of the electrophotographic photoreceptor. The electrophotographic photoreceptor satisfies YC−YA≥0.1 MPa, YC−YB≥0.1 MPa, and YC≤4.5 MPa, where YA, YB, and YC (MPa) represent the Young's moduli of a surface of the photosensitive layer determined by nanoindentation at an indentation depth of 500 nm at end portions A and B extending from a position 10 mm to a position 70 mm from the respective edges of the photosensitive layer toward the center of the photosensitive layer in an axial direction of the electrophotographic photoreceptor and a central portion C extending from a position 20 mm in front of and to a position 20 mm behind the center of the photosensitive layer in the axial direction of the electrophotographic photoreceptor, respectively.

    Naphthalenedicarboximide derivative and electrophotographic photosensitive member
    38.
    发明授权
    Naphthalenedicarboximide derivative and electrophotographic photosensitive member 有权

    公开(公告)号：US09952521B2

    公开(公告)日：2018-04-24

    申请号：US15360190

    申请日：2016-11-23

    申请人： KYOCERA Document Solutions Inc.

    发明人： Hideki Okada

    IPC分类号： G03G5/06 ,  C07D221/18 ,  G03G5/047

    CPC分类号： G03G5/0637 ,  C07D221/18 ,  G03G5/047 ,  G03G5/0614 ,  G03G5/0696

    摘要： A naphthalenedicarboximide derivative is represented by general formula (1) or (2). In general formulas (1) and (2), R1, R2, and R3 each represent, independently of one another, an alkyl group which has a carbon number from 1 to 10 and which may have an aryl group having a carbon number from 6 to 14, an aryl group which has a carbon number from 6 to 14 and which may have an alkyl group having a carbon number from 1 to 10, a cycloalkyl group having a carbon number from 3 to 10, or an alkoxy group having a carbon number from 1 to 6, and m represents an integer from 0 to 4. When m represents an integer of 2 or more, chemical groups R2 may each be the same or may each be different.

    Multi-layer electrophotographic photosensitive member
    39.
    发明授权
    Multi-layer electrophotographic photosensitive member 有权

    公开(公告)号：US09939744B2

    公开(公告)日：2018-04-10

    申请号：US15254012

    申请日：2016-09-01

    申请人： KYOCERA Document Solutions Inc.

    发明人： Jun Azuma ,  Kensuke Okawa ,  Junichiro Otsubo ,  Akihiko Ogata

    IPC分类号： G03G5/06 ,  G03G5/05 ,  G03G5/047

    CPC分类号： G03G5/0546 ,  G03G5/047 ,  G03G5/0507 ,  G03G5/0614 ,  G03G5/0672

    摘要： A multi-layer electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer includes a charge generating layer and a charge transport layer. The charge generating layer contains a charge generating material. The charge transport layer contains a charge transport material, a binder resin, and silica particles. The charge transport layer is a monolayer. The charge transport layer is disposed as an outermost surface layer of the multi-layer electrophotographic photosensitive member. The silica particles have a content of at least 0.5 parts by mass and no greater than 15 parts by mass relative to 100 parts by mass of the binder resin. The binder resin includes a polyarylate resin. The polyarylate resin has a repeating unit represented by general formula (I) shown below. In general formula (I), R1-R3 and Y are defined as those described in the specification.