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公开(公告)号：US11215937B2
公开(公告)日：2022-01-04
申请号：US17226057
申请日：2021-04-08
发明人： Kenta Nakazato , Shimpei Miyagawa , Takeru Horiuchi , Naoki Akira , Takenori Saito , Yoshihiro Saito
IPC分类号： G03G15/02 , C09D109/00 , C09D109/02 , F16C13/00 , G03G15/08
摘要： An elastic body layer is composed of a conductive rubber composition containing an isoprene rubber, a rubber other than the isoprene rubber, and carbon black. The elastic body layer is phase-separated into a first rubber phase containing the isoprene rubber and a second rubber phase containing the rubber other than the isoprene rubber; in the range of a 5 μm×5 μm square of an arbitrary cross section of the elastic body layer, the area ratio of the first rubber phase is within a range of 10 to 90%. The resistance value of the elastic body layer is within a range of 1.0×103 to 1.0×106Ω. A surface layer contains an electronic conductive agent and a crosslinked body of at least one polyurethane resin of an ether polyurethane resin and a carbonate polyurethane resin, and the glass transition point of the surface layer is within a range of −10 to −70° C.
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2.发明申请公开(公告)号：US20180039223A1
公开(公告)日：2018-02-08
申请号：US15787949
申请日：2017-10-19
CPC分类号： G03G21/0017 , C08G18/42 , C08G18/65 , C08G18/7671 , C08L75/06 , C08L83/12 , G03G21/00
摘要： To provide a composition for a cleaning blade for an electrophotographic apparatus, and a cleaning blade for an electrophotographic apparatus that are capable of suppressing wear, chipping, curling, and contamination.A urethane composition contains (a) a polyester polyol, (b) a polyisocyanate, and (c) a modified silicone oil, wherein the (c) modified silicone oil contains a polysiloxane block and an alkylene oxide block, the alkylene oxide block having a hydroxyl group protected by a protecting group, and the (c) modified silicone oil has no hydroxyl group. A cleaning blade is made of a molding of the urethane composition and contains a polyurethane elastomer and the (c) modified silicone oil.
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公开(公告)号：US20180275595A1
公开(公告)日：2018-09-27
申请号：US15990705
申请日：2018-05-28
IPC分类号： G03G21/00
CPC分类号： G03G21/0017
摘要： Provided is a cleaning blade. The cleaning blade is used for removing remaining toner which remains on a surface of the target member in an electrophotographic apparatus. The cleaning blade is provided with the blade portion having the edge portion which comes into sliding contact with the target member. The edge portion includes: a substrate of the blade portion; an inner layer extending from a surface of the substrate to the inside of the substrate; and an outer layer extending from a surface of the substrate to an outer outside of the substrate. The inner layer contains at least an acrylic resin or a methacrylate resin, and has a thickness of less than 1 μm. The outer layer contains at least an acrylic resin or a methacrylate resin, and has a thickness of 0.02 μm or less.
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公开(公告)号：US20160297989A1
公开(公告)日：2016-10-13
申请号：US15184269
申请日：2016-06-16
IPC分类号： C09D175/04 , G03G21/00
CPC分类号： C09D175/04 , C08G18/025 , C08G18/4238 , C08G18/797 , C08J7/04 , C08J7/06 , C08J2375/06 , G03G21/0017
摘要： A method for producing a blade member 1 includes an impregnation step of impregnating at least a portion of a surface of a blade portion 11 made of a polyurethane rubber with a surface treatment liquid that includes a salt of diazabicycloundecene and a carbodiimide-modified polyvalent isocyanate compound including a carbodiimide-modified polyvalent isocyanate dimer and a carbodiimide-modified polyvalent isocyanate trimer or higher multimer, in which a content of the trimer or higher multimer is 50% by mass or less, and a cured layer formation step of heating and curing the carbodiimide-modified polyvalent isocyanate compound which is impregnated into the blade portion 11, to form a cured layer 110.
摘要翻译： 叶片构件1的制造方法包括：浸渍工序，用包含二氮杂双环十一碳烯的盐和碳二亚胺改性的多价异氰酸酯化合物的表面处理液浸渍由聚氨酯橡胶制成的叶片部11的表面的至少一部分 包括碳三亚胺改性的多价异氰酸酯二聚体和三聚物或更高级多聚体的含量为50质量％以下的碳二亚胺改性的多价异氰酸酯三聚物或更高的多聚体，以及将碳二亚胺 改性的多价异氰酸酯化合物，其被浸渍到刀片部分11中，以形成固化层110。
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公开(公告)号：US10942482B2
公开(公告)日：2021-03-09
申请号：US16923119
申请日：2020-07-08
发明人： Shimpei Miyagawa , Yoshihiro Saito
IPC分类号： G03G21/10 , G03G21/00 , C08G18/02 , C08G18/80 , C09D175/06
摘要： A method for manufacturing a blade for electrophotographic devices and a blade for electrophotographic devices are provided. The method includes: an impregnation step of impregnating, from the surface of at least a part of a blade-shaped substrate containing urethane rubber, with a blocked isocyanate in which an isocyanate group is blocked with a blocking agent, wherein the part includes a portion that comes into contact with a mating member; and a curing step of dissociating the blocking agent from the blocked isocyanate impregnated into the substrate in the impregnation step, and then curing the released isocyanate in the substrate to form a cured portion in at least the part of the substrate including the portion that comes into contact with the mating member. In the method, the isocyanate released from the blocked isocyanate includes an aromatic isocyanate.
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公开(公告)号：US10684585B2
公开(公告)日：2020-06-16
申请号：US16568259
申请日：2019-09-12
发明人： Shimpei Miyagawa , Toshihiko Arata
摘要： The disclosure provides a cleaning blade having a blade portion. The blade portion has a blade tip equipped with an edge constituted by a ridge line between the tip surface the blade portion and a blade surface arranged near a photosensitive drum. The blade portion satisfies the following expressions: a≤50 μm, and 0.1≤b/a≤0.6 where, when the blade portion is viewed along blade longitudinal direction with the edge in sliding contact with the photosensitive drum for measurement rotating in one direction, a represents a maximum amplitude of the edge which vibrates with the rotation of the photosensitive drum for measurement, and b represents a maximum amplitude when a position separated from the edge by 200 μm on the blade surface of the blade tip vibrates with the oscillation of the edge.
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公开(公告)号：US10203648B2
公开(公告)日：2019-02-12
申请号：US16016688
申请日：2018-06-25
IPC分类号： G03G21/00
摘要： The disclosure shows a cleaning blade for electrophotographic equipment, the cleaning blade through which both high hardness and low warping are obtained and excellent toner scraping properties are realized. The cleaning blade (10) includes a blade part (12) comprising a cured material of a urethane composition containing a polyol, an isocyanate, and a crosslinker or a chain extender. The content of the isocyanate is 28.0 mass % or more with respect to the entire composition. The crosslinker or the chain extender comprises a triol having a molecular weight of 150 or less. The content of the crosslinker or the chain extender is 4.0 mass % or less with respect to the entire composition. The content of the triol having a molecular weight of 150 or less is 0.8 mass % or more with respect to the entire composition.
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公开(公告)号：US12105436B2
公开(公告)日：2024-10-01
申请号：US18348336
申请日：2023-07-06
发明人： Yoshihiro Saito , Shimpei Miyagawa
IPC分类号： G03G15/02
CPC分类号： G03G15/0233
摘要： A charging roll includes a shaft body, an elastic body layer formed on an outer circumferential surface of the shaft body, and a surface layer formed on an outer circumferential surface of the elastic body layer. The elastic body layer includes silicone rubber. A plurality of large protruding parts having a width of 13-48 μm and a height of 5-13 μm are provided on the outer circumferential surface of the elastic body layer, and a plurality of small protruding parts forming unevenness having a ten-point average roughness Rz of 1.0-6.0 μm are provided on the surface of the large protruding parts. The surface layer contains a urethane polymer, and the elongation at breakage of the surface layer is 285-525%.
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公开(公告)号：US10095176B2
公开(公告)日：2018-10-09
申请号：US15787949
申请日：2017-10-19
摘要： To provide a composition for a cleaning blade for an electrophotographic apparatus, and a cleaning blade for an electrophotographic apparatus that are capable of suppressing wear, chipping, curling, and contamination. A urethane composition contains (a) a polyester polyol, (b) a polyisocyanate, and (c) a modified silicone oil, wherein the (c) modified silicone oil contains a polysiloxane block and an alkylene oxide block, the alkylene oxide block having a hydroxyl group protected by a protecting group, and the (c) modified silicone oil has no hydroxyl group. A cleaning blade is made of a molding of the urethane composition and contains a polyurethane elastomer and the (c) modified silicone oil.
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公开(公告)号：US10030167B2
公开(公告)日：2018-07-24
申请号：US15184269
申请日：2016-06-16
摘要： A method for producing a blade member 1 includes an impregnation step of impregnating at least a portion of a surface of a blade portion 11 made of a polyurethane rubber with a surface treatment liquid that includes a salt of diazabicycloundecene and a carbodiimide-modified polyvalent isocyanate compound including a carbodiimide-modified polyvalent isocyanate dimer and a carbodiimide-modified polyvalent isocyanate trimer or higher multimer, in which a content of the trimer or higher multimer is 50% by mass or less, and a cured layer formation step of heating and curing the carbodiimide-modified polyvalent isocyanate compound which is impregnated into the blade portion 11, to form a cured layer 110.
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