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    • 2. 发明授权
    • Minute diamond powder, method for collecting the same and slurry comprisng the same in suspension
    • 分钟金刚石粉末,收集相同的方法和包含悬浮液的浆料
    • US09546093B2
    • 2017-01-17
    • US12526076
    • 2008-02-08
    • Youichi MoritaTatsuya TakimotoNaoki KomatsuHiroshi YamanakaHisao ShirasawaHiroshi Ishizuka
    • Youichi MoritaTatsuya TakimotoNaoki KomatsuHiroshi YamanakaHisao ShirasawaHiroshi Ishizuka
    • B82Y30/00C01B31/06C09K3/14
    • C01B31/065B82Y30/00C01B32/28C01P2004/64C09K3/1409C09K3/1463Y10T428/2982
    • [Task to be Solved]One of the principal objects of the invention is to collect minute diamond particles of D50 of 20 nm and smaller, by MICROTRAC UPA 150, in high precision and high definition.[Means for Solving the Task]The minute diamond particles of the invention are recovered by a method comprising: (1) joining or combining a hydrophilic functional group with a surface of diamond powder that comprises particles of a primary particle size of 50 nm or less, so as to impart hydrophilic nature on the surface, (2) placing the hydrophilic diamond particles to hold in suspension in water to form a slurry, (3) subjecting said slurry to a hyper-centrifugal process at a centrifugal force of 4×103 G and at the same time a centrifugal load product of 200×103 G·min. or more, in order to remove by depositing a fraction of coarser particles from the slurry, said load product being defined as product of centrifugal force, loaded, in G and duration of loading in minutes, where G represents the gravitational acceleration constant; (4) adding cations to said slurry, whereby the diamond particles in suspension in the water are deposited.
    • [待解决的任务]本发明的主要目的之一是通过MICROTRAC UPA 150以高精度和高清晰度收集20nm以下的D 50的微小金刚石颗粒。 [解决任务的手段]通过以下方法回收本发明的微小金刚石颗粒:(1)将亲水性官能团与包含一次粒径为50nm以下的粒子的金刚石粉末的表面接合或组合 ,以便赋予表面亲水性,(2)将亲水性金刚石颗粒置于悬浮液中以形成浆料,(3)在4×10 3 G离心力下对所述浆料进行超离心过程 并同时具有200×10 3 G·min的离心负荷产物。 或更多,为了通过从浆料中沉积一部分较粗的颗粒来除去,所述负载产物被定义为离心力的乘积,G中的载荷和以几分钟的载荷持续时间,其中G表示重力加速常数; (4)向所述浆料中加入阳离子,由此沉积在水中悬浮液中的金刚石颗粒。
    • 3. 发明授权
    • Fine powder of single crystalline diamond particles and a method for the production thereof
    • 单晶金刚石微粒的细粉及其制造方法
    • US08506919B2
    • 2013-08-13
    • US11813738
    • 2006-01-01
    • Nobuyuki SaitoHisao ShirasawaHiroshi YamanakaHiroshi Ishizuka
    • Nobuyuki SaitoHisao ShirasawaHiroshi YamanakaHiroshi Ishizuka
    • B01J3/06A01K43/04C22B11/10B03B11/00
    • C30B29/04B01D21/02B82Y30/00C01B32/28C01P2004/64C09K3/1409C30B29/605
    • An object of this invention is to provide a fine powder of diamond particles of less than 50 nm with a narrow particle size range. The diamond is single crystalline and characterized with a lot of sharp edges and sharp points. Another object is to provide a method for efficiently producing such fine powder.The method comprises mechanically crushing a raw material of single crystalline diamond particles to prepare starting minute particles of diamond, then imparting hydrophilic quality to the surface of diamond particles. As hydrophilic the diamond particles are dispersed in water to form a slurry, which is set and kept weakly alkaline. The slurry is then subjected to a preliminary grading step, whereby the slurry is removed of a top particle size fraction of the diamond particles that has a D50 size of 60 nm or more. Eliminated of said top particle size fraction, the slurry is then diluted with water to regulate the diamond concentration to 0.1% (by weight) or less. The slurry so conditioned is subjected to a centrifugal force, whereby a coarser particle size fraction of the diamond particles is condensed to a solid cake and removed from the slurry. Effluent slurry is taken out from the centrifugal grading that contains a fraction of the diamond particles having decreased particle sizes.
    • 本发明的目的是提供具有窄的粒度范围的小于50nm的金刚石颗粒的细粉末。 钻石是单晶的,其特征是具有很多锋利的边缘和尖锐的点。 另一个目的是提供一种有效生产这种细粉的方法。 该方法包括机械破碎单晶金刚石颗粒的原料,以制备金刚石的起始微小颗粒,然后赋予金刚石颗粒表面亲水性。 作为亲水性,金刚石颗粒分散在水中以形成浆料,其被固化并保持弱碱性。 然后对浆料进行预分级步骤,由此除去具有D50尺寸为60nm或更大的金刚石颗粒的顶部颗粒尺寸级分的浆料。 除去所述顶部颗粒尺寸级分,然后用水稀释浆料以将金刚石浓度调节至0.1%(重量)以下。 将如此调理的浆料经受离心力,由此将金刚石颗粒的较粗颗粒级分冷凝至固体滤饼并从浆料中除去。 从离心分级中取出流出的浆料,其中含有一部分具有降低的粒度的金刚石颗粒。
    • 4. 发明申请
    • FINE POWDER OF SINGLE CRYSTALLINE DIAMOND PARTICLES AND A METHOD FOR THE PRODUCTION THEREOF
    • 单晶金刚石颗粒的精细粉末及其生产方法
    • US20090175776A1
    • 2009-07-09
    • US11813738
    • 2006-01-01
    • Nobuyuki SaitoHisao ShirasawaHiroshi YamanakaHiroshi Ishizuka
    • Nobuyuki SaitoHisao ShirasawaHiroshi YamanakaHiroshi Ishizuka
    • C01B31/06
    • C30B29/04B01D21/02B82Y30/00C01B32/28C01P2004/64C09K3/1409C30B29/605
    • An object of this invention is to provide a fine powder of diamond particles of less than 50 nm with a narrow particle size range. The diamond is single crystalline and characterized with a lot of sharp edges and sharp points. Another object is to provide a method for efficiently producing such fine powder.The method comprises mechanically crushing a raw material of single crystalline diamond particles to prepare starting minute particles of diamond, then imparting hydrophilic quality to the surface of diamond particles. As hydrophilic the diamond particles are dispersed in water to form a slurry, which is set and kept weakly alkaline. The slurry is then subjected to a preliminary grading step, whereby the slurry is removed of a top particle size fraction of the diamond particles that has a D50 size of 60 nm or more. Eliminated of said top particle size fraction, the slurry is then diluted with water to regulate the diamond concentration to 0.1% (by weight) or less. The slurry so conditioned is subjected to a centrifugal force, whereby a coarser particle size fraction of the diamond particles is condensed to a solid cake and removed from the slurry. Effluent slurry is taken out from the centrifugal grading that contains a fraction of the diamond particles having decreased particle sizes.
    • 本发明的目的是提供具有窄的粒度范围的小于50nm的金刚石颗粒的细粉末。 钻石是单晶的,其特征是具有很多锋利的边缘和尖锐的点。 另一个目的是提供一种有效生产这种细粉的方法。 该方法包括机械破碎单晶金刚石颗粒的原料,以制备金刚石的起始微小颗粒,然后赋予金刚石颗粒表面亲水性。 作为亲水性,金刚石颗粒分散在水中以形成浆料,其被固化并保持弱碱性。 然后对浆料进行预分级步骤,由此除去具有D50尺寸为60nm或更大的金刚石颗粒的顶部颗粒尺寸级分的浆料。 除去所述顶部颗粒尺寸级分,然后用水稀释浆料以将金刚石浓度调节至0.1%(重量)以下。 将如此调理的浆料经受离心力,由此将金刚石颗粒的较粗颗粒级分冷凝至固体滤饼并从浆料中除去。 从离心分级中取出流出的浆料,其中含有一部分具有降低的粒度的金刚石颗粒。
    • 7. 发明授权
    • High frequency relay
    • 高频继电器
    • US06340923B1
    • 2002-01-22
    • US09739774
    • 2000-12-20
    • Hiroshi YamanakaToshiyuki SuzukiKazunobu Nakata
    • Hiroshi YamanakaToshiyuki SuzukiKazunobu Nakata
    • H01H5300
    • H01H50/10H01H50/14H01H50/54H01H51/2272
    • A high frequency relay comprises a contact base block having pairs of fixed contacts, contact members with movable contacts, and an electromagnet for moving the contact members to open and close the fixed contacts by the movable contacts. The contact base block comprises an injection-molded base having projections on its front surface, first metal films formed as the fixed contacts on top surfaces of the projections, second metal films formed as connection terminals for outside devices on a rear surface of the base, each of which corresponds to one of the first metal films, through holes each having a conductive material on its inner surface to make an electrical connection between one of the first metal films and the corresponding second metal film in the shortest distance, and a third metal film formed on the base to provide electrical isolation from the first and second metal films, which works as electromagnetic shield as well as a ground.
    • 高频继电器包括具有成对的固定触点的触点基座,具有可动触点的触点构件,以及用于使触点构件移动以通过可动触点打开和闭合固定触点的电磁体。 接触基块包括在其表面上具有突起的注射成型基底,在突起的顶表面上形成为固定触点的第一金属膜,形成在基底的后表面上的用于外部装置的连接端子的第二金属膜, 每一个对应于第一金属膜中的一个,在其内表面上各自具有导电材料的通孔,以在最短距离内形成第一金属膜之一和相应的第二金属膜之间的电连接;以及第三金属 形成在基底上的膜,以提供与第一和第二金属膜的电隔离,其作为电磁屏蔽以及地面。
    • 8. 发明授权
    • Toner density detecting device
    • 调色剂浓度检测装置
    • US4650310A
    • 1987-03-17
    • US726999
    • 1985-04-25
    • Masatoshi HayashidaTakayuki SugaHiroshi Yamanaka
    • Masatoshi HayashidaTakayuki SugaHiroshi Yamanaka
    • G03G15/08G03G15/09
    • G03G15/0853
    • A toner density detecting device is provided with a coil buried in a housing and a cover member provided on one end of the coil to prevent the developing agent from touching the coil. The cover member has a front end portion provided near the surface of the housing and extending along the developing agent flowing direction and an apex portion at the back of the front end portion with respect to the direction. The apex portion projects deeper into the developing agent than the front end portion. An edge connecting the front end portion and the apex portion extends in the direction to cross the central axis of the coil. A pair of faces extending in the direction on either side of the edge are gradually declined from the edge toward the surface of the housing.
    • 调色剂浓度检测装置设置有埋在壳体中的线圈和设置在线圈的一端上的盖构件,以防止显影剂接触线圈。 盖构件具有设置在壳体的表面附近并沿着显影剂流动方向延伸的前端部和相对于该方向在前端部的后部的顶部。 顶端部分比前端部分更深地突出到显影剂中。 连接前端部分和顶端部分的边缘在与线圈的中心轴线交叉的方向上延伸。 沿着边缘两侧的方向延伸的一对面从边缘朝向壳体的表面逐渐下降。