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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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5.发明申请公开(公告)号：US20220390876A1
公开(公告)日：2022-12-08
申请号：US17664895
申请日：2022-05-25
摘要： An electrophotographic roller includes: a mandrel and an elastic layer on the mandrel, and having a crown shape in which a diameter decreases from a central position O in a longitudinal direction of the mandrel toward an end portion. When a position of the end portion in the longitudinal direction of the elastic layer is defined as X2, a position between the ) and the X2 is defined as X1, a distance between the O and the X1 is defined as L1, and a distance between the X1 and the X2 is defined as L2, L1=0.6×(L1+L2). When outer diameters of the electrophotographic roller at O, X1 and X2 are defined as Do, DX1 and DX2, respectively, and Z1=(Do−DX1)/2 and Z2=(DX1−DX2)/2 are defined, Z1, Z2, L1 and L2 satisfy (Z2/L2)
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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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7.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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8.发明授权公开(公告)号：US11835878B2
公开(公告)日：2023-12-05
申请号：US18188567
申请日：2023-03-23
CPC分类号： G03G15/0216 , G03G15/1685 , G03G21/1814 , G03G15/0233 , G03G2215/00135 , G03G2215/2051
摘要： An electrophotographic roller includes: a mandrel and an elastic layer on the mandrel, and having a crown shape in which a diameter decreases from a central position O in a longitudinal direction of the mandrel toward an end portion. When a position of the end portion in the longitudinal direction of the elastic layer is defined as X2, a position between the O and the X2 is defined as Xl, a distance between the O and the X1 is defined as L1, and a distance between the X1 and the X2 is defined as L2, L1=0.6×(L1+L2). When outer diameters of the electrophotographic roller at O, X1 and X2 are defined as Do, DX1 and DX2, respectively, and Z1=(Do−DX1)/2 and Z2=(DX1−DX2)/2 are defined, Z1, Z2, L1 and L2 satisfy (Z2/L2)
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9.发明公开公开(公告)号：US20230221660A1
公开(公告)日：2023-07-13
申请号：US18188567
申请日：2023-03-23
CPC分类号： G03G15/0216 , G03G15/1685 , G03G2215/00135 , G03G2215/2051
摘要： An electrophotographic roller includes: a mandrel and an elastic layer on the mandrel, and having a crown shape in which a diameter decreases from a central position O in a longitudinal direction of the mandrel toward an end portion. When a position of the end portion in the longitudinal direction of the elastic layer is defined as X2, a position between the O and the X2 is defined as Xl, a distance between the O and the X1 is defined as L1, and a distance between the X1 and the X2 is defined as L2, L1=0.6×(L1+L2). When outer diameters of the electrophotographic roller at O, X1 and X2 are defined as Do, DX1 and DX2, respectively, and Z1=(Do−DX1)/2 and Z2=(DX1−DX2)/2 are defined, Z1, Z2, L1 and L2 satisfy (Z2/L2)
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10.发明授权公开(公告)号：US11644761B2
公开(公告)日：2023-05-09
申请号：US17664895
申请日：2022-05-25
CPC分类号： G03G15/0216 , G03G21/1814 , G03G15/0233
摘要： An electrophotographic roller includes: a mandrel and an elastic layer on the mandrel, and having a crown shape in which a diameter decreases from a central position O in a longitudinal direction of the mandrel toward an end portion. When a position of the end portion in the longitudinal direction of the elastic layer is defined as X2, a position between the O and the X2 is defined as X1, a distance between the O and the X1 is defined as L1, and a distance between the X1 and the X2 is defined as L2, L1=0.6×(L1+L2). When outer diameters of the electrophotographic roller at O, X1 and X2 are defined as Do, DX1 and DX2, respectively, and Z1=(Do−DX1)/2 and Z2=(DX1−DX2)/2 are defined, Z1, Z2, L1 and L2 satisfy (Z2/L2)
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