公开(公告)号：US06875495B2

公开(公告)日：2005-04-05

申请号：US10447964

申请日：2003-05-30

申请人： Takeshi Harasawa ,  Noriko Ioue

发明人： Takeshi Harasawa ,  Noriko Ioue

IPC分类号： G11B5/735 ,  G11B5/66

CPC分类号： G11B5/735 ,  Y10T428/25 ,  Y10T428/2991

摘要： A magnetic recording medium comprising a magnetic layer, a support and a backing layer in this order, wherein the backing layer comprises a binder and an inorganic powder having a surface covered with an electrically conductive substance.

摘要翻译： 一种磁记录介质，其包括磁性层，载体和背衬层，其中所述背衬层包括粘合剂和具有被导电物质覆盖的表面的无机粉末。

公开(公告)号：US06835445B2

公开(公告)日：2004-12-28

申请号：US10650807

申请日：2003-08-29

申请人： Hiroaki Doushita ,  Takeshi Harasawa

发明人： Hiroaki Doushita ,  Takeshi Harasawa

IPC分类号： G11B5714

CPC分类号： G11B5/714 ,  G11B5/712 ,  G11B5/735 ,  G11B5/738 ,  Y10T428/256 ,  Y10T428/2991

摘要： A magnetic recording medium comprising: a support; and a magnetic layer comprising ferromagnetic metal powder and a binder, wherein the ferromagnetic metal powder is acicular composite magnetic particle powder having an average long axis length of from 20 to 50 nm, and at least a part of a surface of the particle powder is covered with carbon black.

摘要翻译： 一种磁记录介质，包括：支撑体; 以及包含铁磁金属粉末和粘合剂的磁性层，其中所述强磁性金属粉末是平均长轴长度为20至50nm的针状复合磁性颗粒粉末，并且所述颗粒粉末的表面的至少一部分被覆盖 与炭黑。

公开(公告)号：US06767612B2

公开(公告)日：2004-07-27

申请号：US10201908

申请日：2002-07-25

申请人： Hiroaki Doushita ,  Takeshi Harasawa

发明人： Hiroaki Doushita ,  Takeshi Harasawa

IPC分类号： G11B5706

CPC分类号： G11B5/70 ,  G11B5/70678 ,  G11B5/738

摘要： Provided is a particulate magnetic recording medium affording great improvement in medium noise in a recording and reproduction system adopting MR heads. The magnetic recording medium comprises a nonmagnetic layer comprising a nonmagnetic powder and a binder and a magnetic layer comprising a hexagonal ferrite powder and a binder in this order on a nonmagnetic support. The number of pits having a depth of ⅓ or more of the minimum recording bit length present on a surface of said magnetic layer is equal to or less than 100/10000 &mgr;m2, and the center surface average roughness of said magnetic layer surface SRa is equal to or less than 6.0 nm.

公开(公告)号：US06260422B1

公开(公告)日：2001-07-17

申请号：US09088130

申请日：1998-06-01

申请人： Yasuharu Odachi ,  Yoichiro Kashiwagi ,  Takeshi Harasawa ,  Yoshitaka Kouketsu

发明人： Yasuharu Odachi ,  Yoichiro Kashiwagi ,  Takeshi Harasawa ,  Yoshitaka Kouketsu

IPC分类号： G01L310

CPC分类号： G01L3/102 ,  G01L3/105

摘要： An improved magnetostrictive torque sensor for sensing torque applied to a shaft that is rotatably supported in a housing. A magnetostrictive cylinder is fixed to the shaft. A stator is supported on the shaft by bearings to surround the magnetostrictive cylinder and is accommodated in the housing. The stator incorporates exciting coils and detecting coils such that the coils are located about the shaft. The magnetosttrictive cylinder is strained by torque applied to the shaft. The exciting coils generate flux running through the magnetostrictive cylinder. The generated flux is changed in accordance with the strain of the magnetostrictive cylinder. The detecting coils detect the flux changes. The stator is also rotatably fixed to the housing by bearings. Rotation of the stator relative to the housing is prevented by connectors that couple the stator with the housing. This prevents tension in wires that lead from the stator.

摘要翻译： 一种改进的磁致伸缩扭矩传感器，用于感测施加到可旋转地支撑在壳体中的轴的扭矩。 磁致伸缩缸固定在轴上。 定子通过轴承支撑在轴上，以围绕磁致伸缩缸并容纳在壳体中。 定子包括励磁线圈和检测线圈，使得线圈围绕轴定位。 磁极筒由施加在轴上的扭矩而变形。 励磁线圈产生通过磁致伸缩缸的磁通。 所产生的磁通量根据磁致伸缩汽缸的应变而改变。 检测线圈检测通量变化。 定子也通过轴承可旋转地固定在壳体上。 通过将定子与壳体联接的连接器来防止定子相对于壳体的旋转。 这防止了从定子引出的电线中的张力。