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1.发明申请公开(公告)号：US20180101107A1
公开(公告)日：2018-04-12
申请号：US15703148
申请日：2017-09-13
IPC分类号： G03G15/02
CPC分类号： G03G15/0233
摘要： It is intended to provide a charging member capable of maintaining high charging performance even when used over a long period. The charging member has an electroconductive support and an electroconductive elastic layer as a surface layer, wherein the electroconductive elastic layer has a roughened surface, and the electroconductive elastic layer has an average Martens' hardness Mc of 2 N/mm2 or larger and 20 N/mm2 or smaller measured with an indentation strength of 0.04 mN at a core surface defined according to three dimensional surface texture standard (ISO 25178-2:2012), and has an average viscosity Vc of 70 mV or smaller measured in a 2 μm square field of view under a scanning probe microscope.
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公开(公告)号：US09904199B2
公开(公告)日：2018-02-27
申请号：US15332437
申请日：2016-10-24
发明人： Kenya Terada , Takumi Furukawa , Hiroaki Watanabe , Yuya Tomomizu , Toshiro Suzuki , Kenichi Yazawa , Kazuhiro Gesho
IPC分类号： G03G15/02
CPC分类号： G03G15/0233
摘要： Provided a charging member including an electro-conductive support and a surface layer, the surface layer having in an outer surface thereof, concave portions and holding an elastic particle in each of the concave portions, the elastic particle being exposed at a surface of the charging member to form a convex portion in the surface of the charging member, and a part of a wall of each of the concave portions constituting a part of the surface of the charging member.
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公开(公告)号：US20170115591A1
公开(公告)日：2017-04-27
申请号：US15332437
申请日：2016-10-24
发明人： Kenya Terada , Takumi Furukawa , Hiroaki Watanabe , Yuya Tomomizu , Toshiro Suzuki , Kenichi Yazawa , Kazuhiro Gesho
IPC分类号： G03G15/02
CPC分类号： G03G15/0233
摘要： Provided a charging member including an electro-conductive support and a surface layer, the surface layer having in an outer surface thereof, concave portions and holding an elastic particle in each of the concave portions, the elastic particle being exposed at a surface of the charging member to form a convex portion in the surface of the charging member, and a part of a wall of each of the concave portions constituting a part of the surface of the charging member.
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公开(公告)号：US09910379B2
公开(公告)日：2018-03-06
申请号：US15332240
申请日：2016-10-24
发明人： Takumi Furukawa , Hiroaki Watanabe , Kenya Terada , Yuya Tomomizu , Toshiro Suzuki , Kenichi Yazawa , Kazuhiro Gesho
IPC分类号： G03G15/02
CPC分类号： G03G15/0233
摘要： Provided a charging member comprising an electro-conductive support and an electro-conductive surface layer, the surface layer including on the outer surface thereof, concave portions that are independent of each other, and holding an insulating particle in each of the concave portions, the insulating particle being exposed to the surface of the charging member and forms a convex portion on the surface of the charging member, in an orthogonal projection image of which the concave portions and the insulating particle are projected on a surface of the electro-conductive support, a site in which an outer edge of a projection image derived from the insulating particle and an outer edge of a projection image derived from each of the concave portions are separated, exists, and a part of a wall of each of the concave portions constitutes a part of the surface of the charging member.
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公开(公告)号：US20170115590A1
公开(公告)日：2017-04-27
申请号：US15332240
申请日：2016-10-24
发明人： Takumi Furukawa , Hiroaki Watanabe , Kenya Terada , Yuya Tomomizu , Toshiro Suzuki , Kenichi Yazawa , Kazuhiro Gesho
IPC分类号： G03G15/02
CPC分类号： G03G15/0233
摘要： Provided a charging member comprising an electro-conductive support and an electro-conductive surface layer, the surface layer including on the outer surface thereof, concave portions that are independent of each other, and holding an insulating particle in each of the concave portions, the insulating particle being exposed to the surface of the charging member and forms a convex portion on the surface of the charging member, in an orthogonal projection image of which the concave portions and the insulating particle are projected on a surface of the electro-conductive support, a site in which an outer edge of a projection image derived from the insulating particle and an outer edge of a projection image derived from each of the concave portions are separated, exists, and a part of a wall of each of the concave portions constitutes a part of the surface of the charging member.
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公开(公告)号：US10317811B2
公开(公告)日：2019-06-11
申请号：US15703148
申请日：2017-09-13
IPC分类号： G03G15/02
摘要： It is intended to provide a charging member capable of maintaining high charging performance even when used over a long period. The charging member has an electroconductive support and an electroconductive elastic layer as a surface layer, wherein the electroconductive elastic layer has a roughened surface, and the electroconductive elastic layer has an average Martens' hardness Mc of 2 N/mm2 or larger and 20 N/mm2 or smaller measured with an indentation strength of 0.04 mN at a core surface defined according to a three dimensional surface texture standard (ISO 25178-2:2012), and has an average viscosity Vc of 70×10−3 V or smaller measured in a square of 2 μm long×2 μm wide field of view under a scanning probe microscope.
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公开(公告)号：US10146149B2
公开(公告)日：2018-12-04
申请号：US15955260
申请日：2018-04-17
发明人： Hiroaki Watanabe , Takumi Furukawa , Yuya Tomomizu , Kenya Terada , Toshiro Suzuki , Kenichi Yazawa , Kazuhiro Gesho
IPC分类号： G03G15/02
摘要： The charging member includes: an electroconductive support; and an electroconductive elastic layer serving as a surface layer, wherein the elastic layer contains a binder, and holds electrically insulating hollow particles in such a state that at least a part of each of the hollow particles is exposed at a surface of the elastic layer, wherein the charging member has protrusions derived from the hollow particles in an outer surface of the charging member, and the outer surface of the charging member includes an outer surface of the elastic layer and an outer surface of an exposed portion of each of the hollow particles, and wherein the protrusions each have a depression in an outer surface of each of the protrusions, and an edge of the depression constitutes an apex in each of the protrusions.
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8.发明申请公开(公告)号：US20180314180A1
公开(公告)日：2018-11-01
申请号：US15955260
申请日：2018-04-17
发明人： Hiroaki Watanabe , Takumi Furukawa , Yuya Tomomizu , Kenya Terada , Toshiro Suzuki , Kenichi Yazawa , Kazuhiro Gesho
IPC分类号： G03G15/02
CPC分类号： G03G15/0233 , G03G15/0225
摘要： The charging member includes: an electroconductive support; and an electroconductive elastic layer serving as a surface layer, wherein the elastic layer contains a binder, and holds electrically insulating hollow particles in such a state that at least a part of each of the hollow particles is exposed at a surface of the elastic layer, wherein the charging member has protrusions derived from the hollow particles in an outer surface of the charging member, and the outer surface of the charging member includes an outer surface of the elastic layer and an outer surface of an exposed portion of each of the hollow particles, and wherein the protrusions each have a depression in an outer surface of each of the protrusions, and an edge of the depression constitutes an apex in each of the protrusions.
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