公开(公告)号：US11982941B2

公开(公告)日：2024-05-14

申请号：US16845096

申请日：2020-04-10

Applicant: Sumitomo Riko Company Limited

Inventor： Koji Morihara ,  Hideyuki Hashimoto ,  Daisuke Inoue ,  Koki Matsuoka ,  Yasuyuki Hayasaki

IPC: G03F7/033 ,  B41N1/00

CPC classification number: G03F7/033 ,  B41N1/00

Abstract: Provided is a flexographic printing plate precursor which can suppress chipping of relief images while maintaining printing properties. The flexographic printing plate precursor (10) includes a photosensitive layer (16) which includes (A) a water-dispersed latex, (B) a millable rubber, (C) a surfactant, (D) photopolymerizable compounds, and (E) a photopolymerization initiator, the (D) including the following (d1) to (d3). (d1) is a photopolymerizable compound of a chain structure having no cyclic structure, (d2) is a monofunctional photopolymerizable compound having a cyclic structure, and (d3) is a bifunctional photopolymerizable compound having a cyclic structure.

公开(公告)号：US20230219777A1

公开(公告)日：2023-07-13

申请号：US18180086

申请日：2023-03-07

Applicant: Sumitomo Riko Company Limited

Inventor： Hironari Nishioka ,  Daisuke Inoue ,  Yasuyuki Hayasaki ,  Sho Sakamoto ,  Yasuhide Watanabe ,  Fumio Misumi ,  Daiki Ito ,  Isamu Maruyama ,  Shingo Nakaichi

IPC: B65H5/02 ,  B65G15/32

CPC classification number: B65H5/02 ,  B65G15/32 ,  B32B2383/00

Abstract: A conveying belt has a cylindrical base layer, and a surface layer that is formed on the outer peripheral surface of the base layer. The base layer contains polyimide or polyamide-imide, and has an elastic modulus from 3-7 GPa, inclusive. The surface layer is configured as a cured object from a resin composition that contains a fluororesin having a hydroxy group, an isocyanate curing agent, and a silicone copolymer. The silicone copolymer is a copolymer containing a silicone unit and another kind of unit not having a siloxane skeleton, has a hydroxy group, and contains siloxane units in a proportion of at least 95 mol% and less than 100 mol%, or from 40-70 mol%, inclusive. The silicone copolymer content in the resin composition is 1-5 parts by mass, inclusive, relative to a total 100 parts by mass of the fluororesin and the isocyanate curing agent.

公开(公告)号：US20180011416A1

公开(公告)日：2018-01-11

申请号：US15671293

申请日：2017-08-08

Applicant: Sumitomo Riko Company Limited

Inventor： Takeru Horiuchi ,  Manabu Sakuda ,  Yosuke Hayashi ,  Yuma Yoshida ,  Daisuke Inoue

IPC: G03G15/02 ,  C08L11/00 ,  C08L9/00 ,  C08L21/00 ,  C08L7/00

Abstract: To provide a conductive roll for an electrophotographic apparatus that includes a conductive rubber elastic body layer having a lower hardness and lower settling properties than a conventional conductive rubber elastic body layer.A conductive roll 10 for an electrophotographic apparatus includes a shaft body 12, and a conductive rubber elastic body layer 14 provided on the outer periphery of the shaft body 12, the conductive rubber elastic body layer 14 containing polar rubber, non-polar rubber, and a dispersing agent, wherein the polar rubber is at least one of nitrile rubber, hydrin rubber, and chloroprene rubber, wherein the non-polar rubber is at least one of isoprene rubber, hydrogenated isoprene rubber, and natural rubber, and wherein the dispersing agent is at least one of a polymer containing a block made of a nitrile rubber component and a block made of an isoprene rubber component, modified natural rubber, and modified isoprene rubber.

公开(公告)号：US10539900B2

公开(公告)日：2020-01-21

申请号：US15671293

申请日：2017-08-08

Applicant: Sumitomo Riko Company Limited

Inventor： Takeru Horiuchi ,  Manabu Sakuda ,  Yosuke Hayashi ,  Yuma Yoshida ,  Daisuke Inoue

IPC: G03G5/00 ,  G03G15/00 ,  C08L7/00 ,  C08L15/00 ,  C08L21/00 ,  G03G15/02 ,  C08L9/00 ,  C08L11/00

Abstract: To provide a conductive roll for an electrophotographic apparatus that includes a conductive rubber elastic body layer having a lower hardness and lower settling properties than a conventional conductive rubber elastic body layer.A conductive roll 10 for an electrophotographic apparatus includes a shaft body 12, and a conductive rubber elastic body layer 14 provided on the outer periphery of the shaft body 12, the conductive rubber elastic body layer 14 containing polar rubber, non-polar rubber, and a dispersing agent, wherein the polar rubber is at least one of nitrile rubber, hydrin rubber, and chloroprene rubber, wherein the non-polar rubber is at least one of isoprene rubber, hydrogenated isoprene rubber, and natural rubber, and wherein the dispersing agent is at least one of a polymer containing a block made of a nitrile rubber component and a block made of an isoprene rubber component, modified natural rubber, and modified isoprene rubber.