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公开(公告)号：US10073374B2
公开(公告)日：2018-09-11
申请号：US15658607
申请日：2017-07-25
发明人： Yoshinobu Ogawa , Ryo Sugiyama , Mitsuru Okuda
IPC分类号： G03G15/08
CPC分类号： G03G15/0812
摘要： A developing apparatus includes a developer carrying roller rotatable in a first rotating direction, and a developer regulating member which controls a thickness of a developer layer carried on a surface of the developer carrying roller. The developer regulating member has a developer layer thickness regulating part abutting with the surface of the developer carrying roller and a projecting part. The projecting part extends towards an upstream side in the first rotating direction from the abutting part, and a non-contacting gap is formed between the projecting part and the surface of the developer carrying roller. The projecting part has a concave shape at a side facing the developer carrying roller that follows an arc-shaped surface of the developer carrying roller and forms a portion having a gap width H and a continuous length L.
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公开(公告)号：US10895824B2
公开(公告)日：2021-01-19
申请号：US16832605
申请日：2020-03-27
发明人： Ryo Sugiyama , Yoshinobu Ogawa , Masashi Uno , Tomoya Uesugi , Kenta Matsunaga , Wataru Moriai
摘要： A developing roller that suppresses contamination of the surface of a photosensitive member and also obtains a high-quality image. The developing roller includes an electro-conductive substrate, an electro-conductive elastic layer and a surface layer which are stacked in this order, wherein the surface layer has resin particles that are dispersed in a polyurethane matrix, an outer surface of the surface layer has a first protrusion originating in first resin particle and a second protrusion originating in second resin particle, wherein the first resin particle contains polyurethane, an elastic modulus E1 of the first resin particle is 100 to 2000 MPa, an elastic modulus E2 of the second resin particle is 2 to 50 MPa, a maximum height roughness Rz of the outer surface is 6 to 18 μm, and a peak vertex density Spd is 5.0×103 to 5.0×104(1/mm2).
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公开(公告)号：US20200310282A1
公开(公告)日：2020-10-01
申请号：US16832605
申请日：2020-03-27
发明人： Ryo Sugiyama , Yoshinobu Ogawa , Masashi Uno , Tomoya Uesugi , Kenta Matsunaga , Wataru Moriai
摘要： A developing roller that suppresses contamination of the surface of a photosensitive member and also obtains a high-quality image. The developing roller includes an electro-conductive substrate, an electro-conductive elastic layer and a surface layer which are stacked in this order, wherein the surface layer has resin particles that are dispersed in a polyurethane matrix, an outer surface of the surface layer has a first protrusion originating in first resin particle and a second protrusion originating in second resin particle, wherein the first resin particle contains polyurethane, an elastic modulus Ei of the first resin particle is 100 to 2000 MPa, an elastic modulus E2 of the second resin particle is 2 to 50 MPa, a maximum height roughness Rz of the outer surface is 6 to 18 μm, and a peak vertex density Spd is 5.0×103 to 5.0×104(1/mm2).
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公开(公告)号：US20180032000A1
公开(公告)日：2018-02-01
申请号：US15658621
申请日：2017-07-25
发明人： Takaaki Shinkawa , Kazuhiro Okubo , Jun Miura , Yoshinobu Ogawa , Ryo Sugiyama , Mitsuru Okuda
IPC分类号： G03G15/08
CPC分类号： G03G15/0812
摘要： The developing apparatus includes a developer carrying member carrying a developer on the surface thereof, a developing frame member rotatably supporting the developer carrying member, and accommodating the developer, and a regulating member fixed to the developing frame member to regulate the developer carried on the developer carrying member, the regulating member has a projecting part, having an abutting part arranged to abut the developer carrying member, and an opposing surface, arranged to face the developer carrying member connected to the projecting part and including an end disposed as a free end, positioned on the downstream side in the rotational direction of the developer carrying member from the projecting part, and the opposing surface being a surface having no point of reverse curve in which the distance between the opposing surface and the developer carrying member is constant or decreases with distance from the projecting part.
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5.发明申请公开(公告)号：US20180031999A1
公开(公告)日：2018-02-01
申请号：US15658607
申请日：2017-07-25
发明人： Yoshinobu Ogawa , Ryo Sugiyama , Mitsuru Okuda
IPC分类号： G03G15/08
CPC分类号： G03G15/0812
摘要： The developing apparatus includes a developer carrying roller rotatable in a first rotating direction, and a developer regulating member which controls the thickness of a developer layer, the developer regulating member having a developer layer thickness regulating part and a projecting part, and having an abutting part with the surface of the developer carrying roller at the developer layer thickness regulating part, and the projecting part having a concave shape at a side facing the developer carrying roller, the projecting part and the surface of the developer carrying roller forming a gap therebetween at an upstream side in the rotating direction from the abutting part, the gap having a portion where a gap width of 0.05-0.5 mm; a maximum value Hmax and a minimum value Hmin of the gap width satisfy the expression Hmax/Hmin≦3.0; and the portion having a continuous length of 0.8 mm or more.
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公开(公告)号：US20180031998A1
公开(公告)日：2018-02-01
申请号：US15649706
申请日：2017-07-14
发明人： Mitsuru Okuda , Ryo Sugiyama , Yoshinobu Ogawa
IPC分类号： G03G15/08
CPC分类号： G03G15/0812 , G03G15/0817 , G03G15/0818 , G03G2215/0861 , G03G2215/0872
摘要： The developing apparatus includes a developer carrying roller rotatable in a first rotating direction, and a developer regulating member which regulates a thickness of a developer layer carried on the developer carrying roller, wherein at least a part of the developer regulating member is in pressure contact with a surface of the developer carrying roller to form an abutting portion between the developer carrying roller and the developer regulating member, the abutting portion having an abutting width W in a circumferential direction of the developer carrying member of 1.0 to 5.0 mm, wherein in the abutting portion, an abutting pressure has a maximum value in a first area, the first area having a width of 20% or less of the abutting width W from an upstream edge of the abutting portion in the rotating direction, and wherein an abutting pressure in a second area is 0.08 to 0.18 MPa.
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公开(公告)号：US10942471B2
公开(公告)日：2021-03-09
申请号：US16821131
申请日：2020-03-17
发明人： Yoshinobu Ogawa , Ryo Sugiyama , Kazuaki Nagaoka , Kenta Matsunaga , Toru Ishii , Hideya Arimura , Fumihiko Utsuno , Tomoya Uesugi , Wataru Moriai , Masashi Uno
摘要： The electrophotographic member includes: an electroconductive substrate; and a surface layer having a mono-layer structure, wherein the surface layer has a matrix containing a cross-linked urethane resin as a binder, and when an elastic modulus of the matrix in a first region in a thickness direction from an outer surface of the surface layer to a depth of 0.1 μm from the outer surface of the surface layer is defined as E1, and an elastic modulus of the matrix in a second region in a thickness direction from a depth of 1.0 μm from the outer surface of the surface layer to 1.1 μm from the outer surface of the surface layer is defined as E2, E1 and E2 satisfy the following Expressions (1) and (2), respectively: E1≥200 MPa (1); and 10 MPa≤E2≤100 MPa (2).
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8.发明申请公开(公告)号：US20200310283A1
公开(公告)日：2020-10-01
申请号：US16821131
申请日：2020-03-17
发明人： Yoshinobu Ogawa , Ryo Sugiyama , Kazuaki Nagaoka , Kenta Matsunaga , Toru Ishii , Hideya Arimura , Fumihiko Utsuno , Tomoya Uesugi , Wataru Moriai , Masashi Uno
摘要： The electrophotographic member includes: an electroconductive substrate; and a surface layer having a mono-layer structure, wherein the surface layer has a matrix containing a cross-linked urethane resin as a binder, and when an elastic modulus of the matrix in a first region in a thickness direction from an outer surface of the surface layer to a depth of 0.1 μm from the outer surface of the surface layer is defined as E1, and an elastic modulus of the matrix in a second region in a thickness direction from a depth of 1.0 μm from the outer surface of the surface layer to 1.1 μm from the outer surface of the surface layer is defined as E2, E1 and E2 satisfy the following Expressions (1) and (2), respectively: E1≥200 MPa (1); and 10 MPa≤E2≤100 MPa (2).
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公开(公告)号：US20180031997A1
公开(公告)日：2018-02-01
申请号：US15655945
申请日：2017-07-21
发明人： Ryo Sugiyama , Yuji Sakurai , Yoshinobu Ogawa , Kazutoshi Ishida , Mitsuru Okuda
IPC分类号： G03G15/08
CPC分类号： G03G15/0808 , G03G15/0812 , G03G15/0818
摘要： The developing apparatus includes: a developing roller rotatable in a first rotation direction; and a developer regulating member, wherein the developing roller includes: a substrate; an electro-conductive elastic layer on the substrate; and insulating domains on the electro-conductive elastic layer, wherein the electro-conductive elastic layer has a certain Martens hardness, the developing roller has a surface including surfaces of the insulating domains and a surface of the electro-conductive elastic layer, which is uncovered with the insulating domains at a certain area ratio, wherein the developer regulating member comprises: an abutting portion which is in contact with the surface of the developing roller, and a certain projection portion extending to an upstream side from the abutting portion in the first rotation direction, the developing apparatus has a certain gap between a side of the projection portion facing to the developing roller, and the surface of the developing roller.
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10.发明申请DEVELOPER QUANTITY CONTROL BLADE HAVING BLADE MEMBER COMPOSED OF A THERMOPLASTIC ELASTOMER COMPOSITION AND IMAGE FORMING APPARATUS 有权具有热塑性弹性体组合物和图像形成装置的叶片的开发者数量控制叶片公开(公告)号：US20160223939A1
公开(公告)日：2016-08-04
申请号：US15001613
申请日：2016-01-20
IPC分类号： G03G15/08
CPC分类号： G03G15/0812
摘要： A developer quantity control blade is provided which can sufficiently impart charge to toner and which allows bleeding of a material from a blade member to be suppressed even in application of a voltage. The developer quantity control blade includes a supporting member and a blade member, wherein the blade member is composed of a thermoplastic elastomer composition including a block copolymer having a polyamide structure and a polyether structure, and an ion conductive agent; in the blade member, a quantity of an extraction component to be extracted with methyl isobutyl ketone as a solvent is 0.5% by mass or more and 2.4% by mass or less; and a quantity of a molecule having a molecular weight of 5000 or less in the extraction component is 70% by mass or more.
摘要翻译： 提供一种显影剂量控制刮板，其可以充分地赋予调色剂电荷，并且即使在施加电压时也允许来自刀片部件的材料的渗出被抑制。 显影剂量控制叶片包括支撑构件和叶片构件，其中，叶片构件由包括具有聚酰胺结构的嵌段共聚物和聚醚结构的热塑性弹性体组合物和离子导电剂构成; 在叶片构件中，用甲基异丁基酮作为溶剂提取的提取组分的量为0.5质量％以上且2.4质量％以下， 提取成分中分子量为5000以下的分子的量为70质量％以上。
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