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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
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.
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Patent Agency Ranking
公开(公告)号：US09815644B2
公开(公告)日：2017-11-14
申请号：US14996591
申请日：2016-01-15
Applicant: SUMITOMO RIKO COMPANY LIMITED
Inventor： Yuma Yoshida , Atsuhiro Kawano , Kuniaki Doi , Satoshi Suzuki
CPC classification number: B65H3/0638 , B65H3/52 , B65H2404/186 , G01R29/24
Abstract: A paper feed roller including an elastic layer composed of thermosetting polyurethane containing a plasticizer, wherein an amount of the plasticizer is within a range of 10 to 50 pts. mass based on 100 pts. mass of the thermosetting polyurethane, and a surface residual charge on the elastic layer is within a range of 90 to 170 V. The surface residual charge is a value determined by single-point measurement of a surface potential of the elastic layer. The measurement includes rotating the paper feed roller in a circumferential direction, electrifying the surface of the elastic layer with a corotron while rotating the paper feed roller, and measuring the surface potential at a center point on the paper feed roller in a roller axis direction in a position where the paper feed roller is rotated by 90 degrees from a position where the surface of the elastic layer is electrified.
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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
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.
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公开(公告)号：US09790041B2
公开(公告)日：2017-10-17
申请号：US15136049
申请日：2016-04-22
Applicant: SUMITOMO RIKO COMPANY LIMITED
Inventor： Kuniaki Doi , Atsuhiro Kawano , Yuma Yoshida
CPC classification number: B65H3/0638 , B65H5/06 , B65H2404/10 , B65H2404/5213 , B65H2511/16 , B65H2601/2611 , F16C13/00 , F16C2324/16
Abstract: A paper feed roller 1 is used in a paper feeding unit in an electrophotographic image forming device. The paper feed roller 1 includes a non-foamed elastic body 2 having an embossed surface 21 including crest-like parts 211 and valley-like parts 212. The embossed surface 21 has many dimple parts 213 recessed inward on bottom surfaces of the valley-like parts 212 or on the bottom surfaces and lateral surfaces of the valley-like parts 212, and does not have the many dimple parts 213 on top parts of the crest-like parts 211. A diameter of the dimple parts 213 can be set to be 1 to 100 μm and an arithmetic average height Ra of the embossed surface 21to be 3 to 50 μm.
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公开(公告)号：US20160236882A1
公开(公告)日：2016-08-18
申请号：US15136049
申请日：2016-04-22
Applicant: SUMITOMO RIKO COMPANY LIMITED
Inventor： Kuniaki Doi , Atsuhiro Kawano , Yuma Yoshida
CPC classification number: B65H3/0638 , B65H5/06 , B65H2404/10 , B65H2404/5213 , B65H2511/16 , B65H2601/2611 , F16C13/00 , F16C2324/16
Abstract: A paper feed roller 1 is used in a paper feeding unit in an electrophotographic image forming device. The paper feed roller 1 includes a non-foamed elastic body 2 having an embossed surface 21 including crest-like parts 211 and valley-like parts 212. The embossed surface 21 has many dimple parts 213 recessed inward on bottom surfaces of the valley-like parts 212 or on the bottom surfaces and lateral surfaces of the valley-like parts 212, and does not have the many dimple parts 213 on top parts of the crest-like parts 211. A diameter of the dimple parts 213 can be set to be 1 to 100 μm and an arithmetic average height Ra of the embossed surface 21 to be 3 to 50 μm.
Abstract translation: 在电子照相图像形成装置中的供纸单元中使用供纸辊1。 供纸辊1包括具有包括波峰状部分211和谷状部分212的压纹表面21的非发泡弹性体2.压纹表面21具有许多凹陷部分213，其在谷底部的底表面向内凹入 部分212或谷状部分212的底表面和侧表面上，并且在顶部211的顶部上不具有许多凹坑部分213。凹坑部分213的直径可以设定为 1〜100μm，压花面21的算术平均高度Ra为3〜50μm。
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公开(公告)号：US20160130098A1
公开(公告)日：2016-05-12
申请号：US14996591
申请日：2016-01-15
Applicant: SUMITOMO RIKO COMPANY LIMITED
Inventor： Yuma Yoshida , Atsuhiro Kawano , Kuniaki Doi , Satoshi Suzuki
CPC classification number: B65H3/0638 , B65H3/52 , B65H2404/186 , G01R29/24
Abstract: A paper feed roller including an elastic layer composed of thermosetting polyurethane containing a plasticizer, wherein an amount of the plasticizer is within a range of 10 to 50 pts. mass based on 100 pts. mass of the thermosetting polyurethane, and a surface residual charge on the elastic layer is within a range of 90 to 170 V. The surface residual charge is a value determined by single-point measurement of a surface potential of the elastic layer. The measurement includes rotating the paper feed roller in a circumferential direction, electrifying the surface of the elastic layer with a corotron while rotating the paper feed roller, and measuring the surface potential at a center point on the paper feed roller in a roller axis direction in a position where the paper feed roller is rotated by 90 degrees from a position where the surface of the elastic layer is electrified.
Abstract translation: 一种供纸辊，其包括由含有增塑剂的热固性聚氨酯构成的弹性层，其中所述增塑剂的量在10至50个点的范围内。 质量基于100点。 热固性聚氨酯的质量和弹性层上的表面残留电荷在90〜170V的范围内。表面残留电荷是通过弹性层的表面电位的单点测定而确定的值。 该测量包括沿圆周方向旋转送纸辊，同时旋转送纸辊使旋转机构的表面带动旋转辊，并且在滚筒轴线方向上测量供纸辊上的中心点处的表面电位 该供纸辊从弹性层的表面带电的位置旋转90度的位置。
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