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公开(公告)号：US09678452B2
公开(公告)日：2017-06-13
申请号：US15082998
申请日：2016-03-28
发明人： Masahiro Watanabe , Tomohito Taniguchi , Noboru Miyagawa , Taichi Sato , Takehiko Aoyama , Takeshi Yoshidome , Atsushi Uematsu
IPC分类号： G03G15/02
CPC分类号： G03G15/0233
摘要： A roller for electrophotography including a mandrel and an elastic layer on the mandrel is provided. The elastic layer contains a hollow particle in a region from the surface of the elastic layer to a depth of 100 μm. A cross-section of the hollow particle intersected by a first plane and a cross-section of the hollow particle intersected by a second plane each have a ratio of the length of the long axis to the length of the short axis of 1.2 or more and 1.9 or less.
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2.发明申请公开(公告)号：US20160291497A1
公开(公告)日：2016-10-06
申请号：US15082998
申请日：2016-03-28
发明人： Masahiro Watanabe , Tomohito Taniguchi , Noboru Miyagawa , Taichi Sato , Takehiko Aoyama , Takeshi Yoshidome , Atsushi Uematsu
IPC分类号： G03G15/02
CPC分类号： G03G15/0233
摘要： A roller for electrophotography including a mandrel and an elastic layer on the mandrel is provided. The elastic layer contains a hollow particle in a region from the surface of the elastic layer to a depth of 100 μm. A cross-section of the hollow particle intersected by a first plane and a cross-section of the hollow particle intersected by a second plane each have a ratio of the length of the long axis to the length of the short axis of 1.2 or more and 1.9 or less.
摘要翻译： 提供了一种用于电子照相的辊，其包括心轴上的心轴和弹性层。 弹性层在从弹性层的表面到100μm的深度的区域中含有中空粒子。 与由第二平面相交的第一平面和中空颗粒的横截面相交的中空颗粒的横截面各自具有长轴长度与短轴长度的比率为1.2以上， 1.9以下。
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3.发明授权Roller member for electrophotography, process cartridge and electrophotographic apparatus 有权电子照相用滚子部件，处理盒和电子照相设备公开(公告)号：US09098006B2
公开(公告)日：2015-08-04
申请号：US14244804
申请日：2014-04-03
发明人： Atsushi Uematsu , Noboru Miyagawa , Taichi Sato
CPC分类号： G03G15/0233 , G03G15/0818 , G03G15/1685 , G03G15/2053
摘要： The roller member has a substrate and an electroconductive elastic layer. The elastic layer has a crown shape of which an outer diameter at the middle in the lengthwise direction is larger than those at its both ends. The elastic layer includes a bowl-shaped resin particle. The surface of the roller member has concavity derived from an opening of the bowl-shaped resin particle and a protrusion derived from an edge of the opening of the resin particle. The relation in the restoring rate for elastic deformation between at the middle of the roller member and at its both ends is such that: on the surface of the elastic layer the restoring rate is larger at both ends than that at the middle, and at the position of depth t μm from the elastic layer surface the restoring rate is larger at the middle than that at both ends.
摘要翻译： 辊构件具有基底和导电弹性层。 弹性层的长度方向中间的外径大于其两端的外径。 弹性层包括碗形树脂颗粒。 辊构件的表面具有源自碗形树脂颗粒的开口的凹陷和源自树脂颗粒的开口的边缘的突起。 在辊构件中间和两端之间的弹性变形恢复率的关系是这样的：在弹性层的表面上，两端的恢复率比中间的恢复率大，而在 距离弹性层表面的深度t m的位置在中间比在两端的恢复率更大。
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公开(公告)号：US20140334843A1
公开(公告)日：2014-11-13
申请号：US14336917
申请日：2014-07-21
发明人： Tomohito Taniguchi , Taichi Sato , Atsushi Uematsu
CPC分类号： G03G15/0233 , G03G21/18
摘要： A charging member including an electro-conductive substrate, an electro-conductive elastic layer, and an electro-conductive surface layer, wherein the elastic layer includes a polymer having a unit derived from ethylene oxide and at least one particle selected from the group consisting of graphite particles and graphitized particles; wherein a particle-exposing portion where the particle is exposed is present on the surface of the elastic layer; the surface of the elastic layer including the particle-exposing portions is coated with the surface layer; the surface layer includes binder resin and resin particles dispersed in the binder resin and has a plurality of protrusions derived from the resin particles on the surface; when the resin particles in the surface layer are orthographically projected onto the surface of the elastic layer, areas other than projected areas of the resin particles on the surface of the elastic layer overlap the particle-exposing portion.
摘要翻译： 一种充电构件，包括导电衬底，导电弹性层和导电表面层，其中弹性层包括具有衍生自环氧乙烷的单元的聚合物和选自以下的至少一种颗粒： 石墨颗粒和石墨化颗粒; 其中在所述弹性层的表面上存在所述颗粒暴露的颗粒暴露部分; 包含颗粒曝光部分的弹性层的表面涂覆有表面层; 表面层包括分散在粘合剂树脂中的粘合剂树脂和树脂颗粒，并且具有多个从表面上的树脂颗粒衍生的突起; 当表面层中的树脂颗粒正交投影到弹性层的表面上时，弹性层表面上的树脂颗粒的投影面积以外的区域与颗粒曝光部分重叠。
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公开(公告)号：US20180024460A1
公开(公告)日：2018-01-25
申请号：US15546826
申请日：2016-03-30
发明人： Atsushi Uematsu , Tomohito Taniguchi , Masahiro Watanabe , Noboru Miyagawa , Taichi Sato , Takehiko Aoyama
IPC分类号： G03G15/02
CPC分类号： G03G15/0233
摘要： Provided is a charging member capable of suppressing the occurrence of an image defect due to the non-uniform abrasion of a photosensitive member and a stain, in a long-term use.The charging member includes an electro-conductive elastic layer as a surface layer.The electro-conductive elastic layer contains a binder and a bowl-shaped resin particle having an opening. The surface of the charging member has a concavity and a protrusion derived from the bowl-shaped resin particle. The relations represented by the following formulae are satisfied, 0.2 ≤ S = S 5 - S 1 S 1 ≤ 0.5 0.15 ≤ d = d 5 - d 1 d 1 ≤ 0.5 wherein, when the charging member is pressed onto a glass plate with 100 (g) load, S1 is the average value of contact areas, dl is the average value of heights of spaces formed in a contact region; and when the load is changed to 500 (g), S5 is the average value of contact areas, d5 is the average value of heights of spaces.
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公开(公告)号：US20150277244A1
公开(公告)日：2015-10-01
申请号：US14662228
申请日：2015-03-18
发明人： Taichi Sato , Tomohito Taniguchi , Noboru Miyagawa , Takehiko Aoyama , Atsushi Uematsu , Masahiro Watanabe , Yuki Yamamoto , Harunobu Ogaki , Akihiro Maruyama , Takashi Anezaki , Daisuke Miura , Hirofumi Kumoi
CPC分类号： G03G5/04 , G03G5/056 , G03G5/0564 , G03G5/0578 , G03G5/0592 , G03G5/0596 , G03G15/0233
摘要： Provided an electrophotographic image forming apparatus comprising an electrophotographic photosensitive member and a charging member. The electrophotographic photosensitive member includes a charge transport layer as a surface layer having a matrix-domain structure including specific resins. The charging member comprises an electro-conductive substrate, and an electro-conductive elastic layer. The electro-conductive elastic layer comprises a binder, and holding a bowl-shaped resin particle having an opening, so that at least a part of the bowl-shaped resin particle is exposed, and the charging member has a concavity derived from the opening of the bowl-shaped resin particle on the surface thereof, and a protrusion derived from an edge of the opening of the bowl-shaped resin particle on the surface thereof.
摘要翻译： 提供了一种包括电子照相感光构件和充电构件的电子照相图像形成装置。 电子照相感光构件包括作为具有包含特定树脂的基质结构结构的表面层的电荷输送层。 充电构件包括导电衬底和导电弹性层。 导电弹性层包括粘合剂，并且保持具有开口的碗形树脂颗粒，使得至少一部分碗形树脂颗粒暴露，并且充电构件具有从开口的开口衍生的凹部 其表面上的碗形树脂颗粒和从其表面上的碗形树脂颗粒的开口的边缘衍生的突起。
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公开(公告)号：US09075333B2
公开(公告)日：2015-07-07
申请号：US14288810
申请日：2014-05-28
发明人： Atsushi Uematsu , Tomohito Taniguchi , Taichi Sato
CPC分类号： G03G15/0233 , G03G21/18 , Y10T428/249973
摘要： Provided is a charging member for suppressing the vibration of a charging roller which occurs owing to a difference in circumferential speed in a longitudinal direction when the roller is rotated to follow a photosensitive member, and suppressing a banding image caused by the vibration of the charging roller over a long period of time. The charging member includes a substrate and an elastic layer. The elastic layer contains a rubber having a polar group and hollow particles each having a shell containing a crystal of calcium carbonate.
摘要翻译： 提供一种充电构件，用于抑制当辊旋转以跟随感光构件时由于纵向方向上的圆周速度差而产生的充电辊的振动，并且抑制由充电辊的振动引起的带状图像 在很长一段时间内。 充电构件包括基底和弹性层。 弹性层含有具有极性基团的橡胶和各自具有含有碳酸钙结晶的壳的中空粒子。
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公开(公告)号：US20150003872A1
公开(公告)日：2015-01-01
申请号：US14315686
申请日：2014-06-26
发明人： Tomohito Taniguchi , Takehiko Aoyama , Taichi Sato , Noboru Miyagawa , Masahiro Watanabe , Atsushi Uematsu , Yoshitaka Suzumura
IPC分类号： G03G15/02
CPC分类号： G03G15/0233 , G03G9/09716 , G03G9/09725
摘要： There are provided an image-forming apparatus that inhibit the occurrence of a longitudinal streak image attributed to a cleaning failure, and a process cartridge.The image-forming apparatus and the process cartridge each have a charging member with a surface having a concavities derived from an opening of the bowl-shaped resin particle, and a protrusions derived from an edge of the opening of the bowl-shaped resin particle, the coverage ratio X1 of a surface of the toner with the silica fine particles is 50.0 area % or more and 75.0 area % or less, and when a theoretical coverage ratio of the toner by the silica fine particles is X2, a diffusion index represented by the formula 1 satisfies the formula 2: diffusion index=X1/X2 (formula 1) diffusion index≧−0.0042×X1+0.62 (formula 2)
摘要翻译： 提供了抑制由于清洁故障引起的纵向条纹图像的发生的图像形成装置和处理盒。 图像形成装置和处理盒各自具有充电构件，其具有源自碗状树脂颗粒的开口的凹部的表面和源自碗状树脂颗粒的开口的边缘的突起， 二氧化硅微粒的调色剂的表面的覆盖率X1为50.0面积％以上且75.0面积％以下，当二氧化硅微粒的调色剂的理论覆盖率为X2时，扩散指数为 式1满足式2：扩散指数= X1 / X2（式1）扩散指数≧-0.0042×X1 + 0.62（式2）
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公开(公告)号：US09448502B2
公开(公告)日：2016-09-20
申请号：US14336917
申请日：2014-07-21
发明人： Tomohito Taniguchi , Taichi Sato , Atsushi Uematsu
CPC分类号： G03G15/0233 , G03G21/18
摘要： A charging member including an electro-conductive substrate, an electro-conductive elastic layer, and an electro-conductive surface layer, wherein the elastic layer includes a polymer having a unit derived from ethylene oxide and at least one particle selected from the group consisting of graphite particles and graphitized particles; wherein a particle-exposing portion where the particle is exposed is present on the surface of the elastic layer; the surface of the elastic layer including the particle-exposing portions is coated with the surface layer; the surface layer includes binder resin and resin particles dispersed in the binder resin and has a plurality of protrusions derived from the resin particles on the surface; when the resin particles in the surface layer are orthographically projected onto the surface of the elastic layer, areas other than projected areas of the resin particles on the surface of the elastic layer overlap the particle-exposing portion.
摘要翻译： 一种充电构件，包括导电衬底，导电弹性层和导电表面层，其中弹性层包括具有衍生自环氧乙烷的单元的聚合物和选自以下的至少一种颗粒： 石墨颗粒和石墨化颗粒; 其中在所述弹性层的表面上存在所述颗粒暴露的颗粒暴露部分; 包含颗粒曝光部分的弹性层的表面涂覆有表面层; 表面层包括分散在粘合剂树脂中的粘合剂树脂和树脂颗粒，并且具有多个从表面上的树脂颗粒衍生的突起; 当表面层中的树脂颗粒正交投影到弹性层的表面上时，弹性层表面上的树脂颗粒的投影面积以外的区域与颗粒曝光部分重叠。
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公开(公告)号：US09411307B2
公开(公告)日：2016-08-09
申请号：US14284945
申请日：2014-05-22
CPC分类号： G03G21/1814 , G03G5/14708 , G03G5/14752 , G03G5/14756 , G03G5/14773 , G03G15/0233
摘要： A process cartridge that can suppress production of a banding image attributed to contact rotation of an electrophotographic photosensitive member and a charging member and output a high-quality image is provided. The charging member includes an electro-conductive substrate and an electroconductive resin layer, the resin layer contains a binder, a conductive fine particle, and a bowl-shaped resin particle having an opening, and the surface of the charging member has a concavity derived from the opening of the bowl-shaped resin particle and a protrusion derived from the edge of the opening thereof. The electrophotographic photosensitive member includes a support and a photosensitive layer, and the surface layer in the photosensitive member contains a specific resin (α), a specific resin (β), and a specific compound (γ).
摘要翻译： 提供了能够抑制归因于电子照相感光构件和充电构件的接触旋转并输出高质量图像的带状图像的生成的处理盒。 充电构件包括导电基板和导电树脂层，树脂层包含粘合剂，导电细颗粒和具有开口的碗形树脂颗粒，并且充电构件的表面具有衍生自 碗形树脂颗粒的开口和源自其开口的边缘的突起。 电子照相感光构件包括支撑体和感光层，感光构件中的表面层含有特定树脂（α），特定树脂（β）和特定化合物（γ）。
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