公开(公告)号：US20050106420A1

公开(公告)日：2005-05-19

申请号：US10868914

申请日：2004-06-17

申请人： Shigeo Kurose ,  Hiroyuki Tanaka ,  Kenji Shirasuna

发明人： Shigeo Kurose ,  Hiroyuki Tanaka ,  Kenji Shirasuna

IPC分类号： G11B5/00 ,  G11B5/17 ,  G11B5/70 ,  G11B5/702 ,  G11B5/738 ,  G11B5/74

CPC分类号： G11B5/738 ,  G11B5/70 ,  G11B5/7026 ,  G11B5/74 ,  G11B2005/001 ,  G11B2005/0016 ,  Y10T428/265

摘要： A magnetic recording medium is provided, in which a high recording density is realized, and an electromagnetic transducing characteristic and an error rate are improved. The magnetic recording medium includes a non-magnetic layer containing a non-magnetic powder and a binder resin and a magnetic layer containing a ferromagnetic powder and a binder resin on one surface of a non-magnetic substrate, the non-magnetic powder contains a non-magnetic inorganic powder having an average particle diameter of 80 nm or less, the three-dimensional center surface average roughness of the magnetic layer surface is 3.0 nm or less in a region of 100 μm2 based on a measurement with an atomic force microscope, and the area share held by asperities of at least ±5.0 nm with reference to the surface at an average height is 15 percent or less in a region of 100 μm2 on the magnetic layer surface.

摘要翻译： 提供了一种磁记录介质，其中实现了高记录密度，并提高了电磁传感特性和误码率。 磁记录介质包括非磁性粉末和粘合剂树脂的非磁性层和在非磁性基材的一个表面上含有铁磁粉末和粘合剂树脂的磁性层，非磁性粉末含有非磁性粉末， 平均粒径为80nm以下的磁性无机粉末，基于a的磁性层表面的三维中心面平均粗糙度为100nm以下的区域为3.0nm以下 使用原子力显微镜进行测量，相对于平均高度的表面，至少±5.0nm的粗糙度保持的面积份额在100mum 2的区域中为15％以下 磁性层表面。

公开(公告)号：US06821602B2

公开(公告)日：2004-11-23

申请号：US10050857

申请日：2002-01-18

申请人： Shigeo Kurose ,  Akihiko Seki ,  Katsuhiko Yamazaki

发明人： Shigeo Kurose ,  Akihiko Seki ,  Katsuhiko Yamazaki

IPC分类号： G11B5708

CPC分类号： G11B5/842 ,  Y10T428/24975 ,  Y10T428/25 ,  Y10T428/265

摘要： The present invention provides a magnetic recording medium having a thinned magnetic layer, excellent electromagnetic conversion characteristics and an excellent durability, and a process for producing the same. A magnetic recording medium comprising a lower non-magnetic layer containing at least a carbon black and a radiation curing type binder resin on a non-magnetic support and an upper magnetic layer having a thickness of 0.30 &mgr;m or less on the lower non-magnetic layer, wherein the upper magnetic layer contains at least a ferromagnetic powder, a binder resin and an abrasive having a Mohs hardness of 6 or higher and a smaller average particle size than the thickness of the upper magnetic layer. The thickness of the upper magnetic layer is, for example, 0.05 to 0.30 &mgr;m. The average particle size of the abrasive is, for example, 0.01 to 0.2 &mgr;m.

摘要翻译： 本发明提供一种磁记录介质，其具有变薄的磁性层，优异的电磁转换特性和优异的耐久性及其制造方法.1。一种磁记录介质，包括至少含有炭黑和 在非磁性载体上的辐射固化型粘合剂树脂和在下部非磁性层上具有0.30μm或更小的厚度的上部磁性层，其中上部磁性层至少含有铁磁性粉末，粘合剂树脂和研磨剂 莫氏硬度为6以上，平均粒径小于上层磁性层的厚度。 上磁性层的厚度例如为0.05〜0.30μm。 研磨剂的平均粒径例如为0.01〜0.2μm。

公开(公告)号：US06344235B1

公开(公告)日：2002-02-05

申请号：US09424590

申请日：1999-11-24

申请人： Tadayoshi Iijima ,  Shigeo Kurose ,  Tetsuya Takahashi

发明人： Tadayoshi Iijima ,  Shigeo Kurose ,  Tetsuya Takahashi

IPC分类号： B05D512

CPC分类号： H01M4/043 ,  H01M4/02 ,  H01M4/0404 ,  H01M4/0409 ,  H01M4/0411 ,  H01M4/0414 ,  H01M4/0416 ,  H01M4/0435 ,  H01M4/131 ,  H01M4/139 ,  H01M4/505 ,  H01M4/525 ,  H01M4/625 ,  H01M10/0525

摘要： This invention is a method for producing an electrode for a non-aqueous electrolytic cell, in which a collector is coated with an electrode active material layer comprising an active material, flake graphite and a binder, which is characterized by that the graphite is subjected to a pulverization process twice or more, followed by mixing and pulverization using the active material, and provides an electrode for a secondary cell which is good in charge and discharge characteristics such as discharge capacity and charge and discharge cycle life, and improved in physical characteristics.

摘要翻译： 本发明是一种非水电解电池用电极的制造方法，其特征在于，使用含有活性物质，片状石墨和粘合剂的电极活性物质层， 粉碎过程两次或更多次，然后使用活性材料进行混合和粉碎，并且提供一种二次电池用电极，其放电特性，充放电循环寿命等放电特性良好，物理特性提高。

公开(公告)号：US5225281A

公开(公告)日：1993-07-06

申请号：US668496

申请日：1991-03-21

申请人： Kiminori Tamai ,  Shigeo Kurose ,  Kiyotaka Okuyama

发明人： Kiminori Tamai ,  Shigeo Kurose ,  Kiyotaka Okuyama

IPC分类号： G11B5/706 ,  G11B5/712 ,  G11B5/714

CPC分类号： G11B5/714 ,  G11B5/70615 ,  G11B5/712 ,  Y10S428/90 ,  Y10T428/2991

摘要： The magnetic recording medium of the invention has a magnetic layer formed by mixing an iron base metal magnetic powder with a binder, the metal magnetic powder being prepared by furnishing hydrous iron oxide or iron oxide powder as a starting material, applying Zr, Al, and Si compounds or Zr, Al, and Co compounds to the powder surface, and reducing the treated powder in a reducing atmosphere. Improved surface smoothness, a low coefficient of friction, and improved dynamic durability are achievable.

摘要翻译： PCT No.PCT / JP90 / 00908 Sec。 371日期1991年3月21日 102（e）1991年3月21日PCT PCT 1990年7月13日PCT公布。 出版物WO91 / 01548 PCT 日本1991年7月2日。本发明的磁记录介质具有通过将铁基金属磁性粉末与粘合剂混合而形成的磁性层，金属磁性粉末是通过提供含水氧化铁或氧化铁粉末作为原料制备的 ，将Zr，Al和Si化合物或Zr，Al和Co化合物施加到粉末表面，并在还原气氛中还原处理过的粉末。 可以实现改进的表面平滑度，低摩擦系数和改善的动态耐久性。