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31 条记录 (耗时 0.027 秒)

    Image forming apparatus and image forming method
    5.
    发明授权
    Image forming apparatus and image forming method 有权

    公开(公告)号：US10802412B2

    公开(公告)日：2020-10-13

    申请号：US16812964

    申请日：2020-03-09

    申请人： Yuka Aoyama ,  Keiichiro Juri ,  Shinya Nakayama ,  Hiroshi Yamada

    发明人： Yuka Aoyama ,  Keiichiro Juri ,  Shinya Nakayama ,  Hiroshi Yamada

    IPC分类号： G03G9/087 ,  G03G15/08 ,  G03G21/00

    摘要： An image forming apparatus including developing unit to develop electrostatic latent image with toner to form visible image, and cleaning unit including elastic member including surface layer and configured to remove the toner, wherein Martens hardness A and Martens hardness B of the surface layer measured by applying load of 1 μN and load of 1,000 μN, respectively, to position of the surface layer in thickness direction thereof using nanoindenter are both 2.5 N/mm2 or greater but 32.5 N/mm2 or less, and Martens hardness A and Martens hardness B satisfy inequality, Martens hardness A>Martens hardness B wherein coefficient of dynamic friction of the surface layer against polycarbonate is 0.5 or less, and the toner includes polyester resin insoluble to THF and Tg of THF-insoluble component of the toner determined from DSC curve of first heating of DSC is −60° C. or higher but 20° C. or lower.

    Image forming apparatus, image forming method, and process cartridge
    6.
    发明授权
    Image forming apparatus, image forming method, and process cartridge 有权

    公开(公告)号：US10859963B2

    公开(公告)日：2020-12-08

    申请号：US16822092

    申请日：2020-03-18

    申请人： Shinya Nakayama ,  Keiichiro Juri ,  Yuka Aoyama ,  Hiroshi Yamada

    发明人： Shinya Nakayama ,  Keiichiro Juri ,  Yuka Aoyama ,  Hiroshi Yamada

    IPC分类号： G03G21/00

    摘要： An image forming apparatus including an image bearer and a cleaning blade is provided. The cleaning blade comprises an elastic member configured to contact a surface of the image bearer to remove toner particles remaining thereon. The elastic member comprises a substrate and a surface layer comprising a cured product of a curable composition and a siloxane compound. The surface layer is disposed on at least a part of a lower surface of the substrate. The surface layer has a hardness gradient in which a Martens hardness HM measured using a nanoindenter decreases from a surface of the surface layer toward the lower surface of the substrate in a thickness direction, and the Martens hardness HM measured in a region extending from a vicinity of the surface (with a load of 1 μN) to a deepest part in the thickness direction (with a load of 1,000 μN) ranges from 2.5 to 32.5 N/mm2. The toner has a tensile breaking force F of from 200 to 450 gf (from 1.96 to 4.41 N), measured using a powder layer compression/tensile strength measurement device under a load of 32 kgf (313.81 N).

    IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND PROCESS CARTRIDGE
    7.
    发明申请
    IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND PROCESS CARTRIDGE 审中-公开

    公开(公告)号：US20200301348A1

    公开(公告)日：2020-09-24

    申请号：US16822092

    申请日：2020-03-18

    申请人： Shinya Nakayama ,  Keiichiro Juri ,  Yuka Aoyama ,  Hiroshi Yamada

    发明人： Shinya Nakayama ,  Keiichiro Juri ,  Yuka Aoyama ,  Hiroshi Yamada

    IPC分类号： G03G21/00

    摘要： An image forming apparatus including an image bearer and a cleaning blade is provided. The cleaning blade comprises an elastic member configured to contact a surface of the image bearer to remove toner particles remaining thereon. The elastic member comprises a substrate and a surface layer comprising a cured product of a curable composition and a siloxane compound. The surface layer is disposed on at least a part of a lower surface of the substrate. The surface layer has a hardness gradient in which a Martens hardness HM measured using a nanoindenter decreases from a surface of the surface layer toward the lower surface of the substrate in a thickness direction, and the Martens hardness HM measured in a region extending from a vicinity of the surface (with a load of 1 μN) to a deepest part in the thickness direction (with a load of 1,000 μN) ranges from 2.5 to 32.5 N/mm2. The toner has a tensile breaking force F of from 200 to 450 gf (from 1.96 to 4.41 N), measured using a powder layer compression/tensile strength measurement device under a load of 32 kgf (313.81 N).

    IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD
    8.
    发明申请
    IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD 审中-公开

    公开(公告)号：US20200292954A1

    公开(公告)日：2020-09-17

    申请号：US16812964

    申请日：2020-03-09

    申请人： Yuka AOYAMA ,  Keiichiro Juri ,  Shinya Nakayama ,  Hiroshi Yamada

    发明人： Yuka AOYAMA ,  Keiichiro Juri ,  Shinya Nakayama ,  Hiroshi Yamada

    IPC分类号： G03G9/087 ,  C08G18/10 ,  C08G18/76 ,  C08G18/48 ,  C08G18/24 ,  C08G18/50 ,  G03G21/00 ,  G03G15/08

    摘要： An image forming apparatus including developing unit to develop electrostatic latent image with toner to form visible image, and cleaning unit including elastic member including surface layer and configured to remove the toner, wherein Martens hardness A and Martens hardness B of the surface layer measured by applying load of 1 μN and load of 1,000 μN, respectively, to position of the surface layer in thickness direction thereof using nanoindenter are both 2.5 N/mm2 or greater but 32.5 N/mm2 or less, and Martens hardness A and Martens hardness B satisfy inequality, Martens hardness A>Martens hardness B wherein coefficient of dynamic friction of the surface layer against polycarbonate is 0.5 or less, and the toner includes polyester resin insoluble to THF and Tg of THF-insoluble component of the toner determined from DSC curve of first heating of DSC is −60° C. or higher but 20° C. or lower.

    Cleaning blade for intermediate transfer medium, and image forming apparatus
    9.
    发明授权
    Cleaning blade for intermediate transfer medium, and image forming apparatus 有权

    公开(公告)号：US12001162B2

    公开(公告)日：2024-06-04

    申请号：US18098730

    申请日：2023-01-19

    申请人： Masahiro Ohmori ,  Keiichiro Juri ,  Takuya Akiyama

    发明人： Masahiro Ohmori ,  Keiichiro Juri ,  Takuya Akiyama

    IPC分类号： G03G21/00 ,  G03G15/16

    CPC分类号： G03G21/0017 ,  G03G15/161

    摘要： A cleaning blade for an intermediate transfer medium is provided. A cleaning target of the cleaning blade is an intermediate transfer medium. The cleaning blade includes an edge layer and a coating layer. The coating layer provided on a forefront end of the edge layer at which the edge layer contacts the intermediate transfer medium contains a first fluorine-based resin and a second fluorine-based resin incompatible with the first fluorine-based resin. The cleaning blade for an intermediate transfer medium has a Martens hardness of 0.5 N/mm2 or greater and 3 N/mm2 or less at a location having a distance of 20 μm from a ridgeline of the forefront end of the edge layer.