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11.发明申请公开(公告)号：US20100097720A1
公开(公告)日：2010-04-22
申请号：US12553835
申请日：2009-09-03
申请人： Nobutaka Ihara , Hiroto Takeshita , Yuji Ito
发明人： Nobutaka Ihara , Hiroto Takeshita , Yuji Ito
摘要： According to one embodiment, a magnetic recording/reproducing apparatus includes a magnetic head and a magnetic recording medium. The magnetic recording medium includes a recording layer formed of a hard magnetic layer and a soft magnetic layer. The hard magnetic layer has a bit width corresponding to a length of a bit island in a radial direction of the magnetic recording medium. The soft magnetic layer is arranged on the hard magnetic layer. The soft magnetic layer has a width smaller than the bit width and is arranged at a position displaced in a direction away from an off-track portion of the leading edge of the magnetic head skewed at an angle.
摘要翻译： 根据一个实施例，磁记录/再现装置包括磁头和磁记录介质。 磁记录介质包括由硬磁层和软磁层形成的记录层。 硬磁性层具有与磁记录介质的径向方向上的位岛的长度对应的位宽度。 软磁性层配置在硬磁性层上。 软磁性层的宽度小于位宽度，并配置在远离磁头的前缘的偏离磁道部分的方向偏移的位置。
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公开(公告)号：US20090311558A1
公开(公告)日：2009-12-17
申请号：US12408604
申请日：2009-03-20
申请人： Hiroto Takeshita
发明人： Hiroto Takeshita
摘要： A magnetic recording medium that includes: a disc-shaped substrate; and plural magnetization retainers arranged on the disc-shaped substrate in plural circulations around a center of the substrate, each of the magnetization retainers having a length in a circumferential direction in such a manner that the length becomes longer as closer to outer circumference at least in a predetermined area, each retaining magnetization individually, each being formed of a magnetic material having axis of easy magnetization of magnetocrystalline anisotropy in a direction perpendicular to front and back surfaces of the substrate, each being filled with an ion that weakens the magnetocrystalline anisotropy of the magnetic material such that an amount of ion implantation becomes less as closer to the outer circumference in the predetermined area.
摘要翻译： 一种磁记录介质，包括：盘状基板; 以及多个磁化保持器，其以围绕基板的中心的多个循环布置在盘形基板上，每个磁化保持器具有沿圆周方向的长度，使得长度至少在 一个预定区域，每个保持单独的磁化，每一个都由一个磁性材料形成，该磁性材料具有在垂直于该基板的前表面和后表面的方向上具有磁晶各向异性的易磁化轴，每一个都填充有一个离子，该离子削弱了该晶体的磁晶各向异性 磁性材料使得离子注入量在预定区域内更接近外圆。
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13.发明申请公开(公告)号：US20090305082A1
公开(公告)日：2009-12-10
申请号：US12402032
申请日：2009-03-11
申请人： Hiroto Takeshita
发明人： Hiroto Takeshita
摘要： Although dots and servo patterns are made of the same magnetic material, the dots have a relatively low coercive force so as to allow data deletion and rewrite by a magnetic head, whilst the servo patterns have a high coercive force compared with the coercive force of the dots. The coercive force of the servo patterns is strong enough so as to eliminate the influence of shape magnetic anisotropy.
摘要翻译： 虽然点和伺服图案由相同的磁性材料制成，但是这些点具有相对低的矫顽力，以便允许数据被磁头删除和改写，而伺服图案与矫顽力相比具有很高的矫顽力 圆点 伺服模式的矫顽力足够强大，以消除形状磁各向异性的影响。
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14.发明申请公开(公告)号：US20090257148A1
公开(公告)日：2009-10-15
申请号：US12337206
申请日：2008-12-17
申请人： Nobutaka Ihara , Hiroto Takeshita
发明人： Nobutaka Ihara , Hiroto Takeshita
IPC分类号： G11B5/82
摘要： There is provided a magnetic recording medium which contains a substrate in the shape of a disk, and a plural of recording bit formed on the substrate, wherein a bottom face of the recording bit is disposed so as to face the substrate, a top face of the recording bit is disposed so as to correspond to the bottom face of the recording bit, and Twb is larger than Twt, where Twb indicates a width of the bottom face with respect to a radius direction of the magnetic recording medium, and Twt indicates a width of the top face with respect to the radius direction.
摘要翻译： 提供了一种磁记录介质，其包含盘形状的基板和形成在基板上的多个记录钻头，其中记录钻头的底面以与基板相对的方式设置， 记录位被配置为与记录位的底面相对应，并且Twb大于Twt，其中Twb表示底面相对于磁记录介质的半径方向的宽度，Twt表示 顶面相对于半径方向的宽度。
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公开(公告)号：US07402348B2
公开(公告)日：2008-07-22
申请号：US11088241
申请日：2005-03-23
申请人： Hiroto Takeshita , Maki Maeda , Takuya Uzumaki
发明人： Hiroto Takeshita , Maki Maeda , Takuya Uzumaki
IPC分类号： G11B5/66
CPC分类号： G11B5/66 , G11B5/012 , G11B5/656 , G11B2005/0029 , Y10T428/24975
摘要： A magnetic recording layer is formed on an auxiliary magnetic layer in a perpendicular magnetic recording medium. The auxiliary magnetic layer has the axis of easy magnetization in the vertical direction perpendicular to the surface of a substrate. The perpendicular magnetic recording medium reliably allows establishment of the magnetization in the auxiliary magnetic layer in the vertical direction. When a magnetic flux flows along the vertical direction perpendicular to the surface of the magnetic recording layer, the magnetic flux flows across the magnetic recording layer in the vertical direction. The magnetization is thus reliably established in the magnetic recording layer in the vertical direction. The magnetic field of a stronger intensity is thus leaked out of the magnetic recording layer in the vertical direction.
摘要翻译： 在垂直磁记录介质中的辅助磁性层上形成磁记录层。 辅助磁性层在垂直于衬底表面的垂直方向具有容易磁化的轴。 垂直磁记录介质可靠地允许在垂直方向上建立辅助磁性层中的磁化。 当磁通量沿垂直于磁记录层表面的垂直方向流动时，磁通量在垂直方向上流过磁记录层。 因此磁化在磁记录层中沿垂直方向可靠地建立。 因此，较强的强度的磁场在垂直方向从磁记录层泄漏出来。
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公开(公告)号：US20050196649A1
公开(公告)日：2005-09-08
申请号：US11091937
申请日：2005-03-28
申请人： Ryosaku Inamura , Hiroto Takeshita , Toshio Sugimoto , Kazumasa Shimoda , Takenori Oshima , Maki Maeda , Takuya Uzumaki , Atsushi Tanaka
发明人： Ryosaku Inamura , Hiroto Takeshita , Toshio Sugimoto , Kazumasa Shimoda , Takenori Oshima , Maki Maeda , Takuya Uzumaki , Atsushi Tanaka
CPC分类号： B32B1/00 , G11B5/65 , G11B5/667 , G11B5/7325
摘要： A perpendicular magnetic recording medium includes a magnetic orientation controller layer serving as a layer for controlling crystalline orientation in an upper layer. A non-magnetic orientation controller layer extends on the surface of the magnetic orientation controller layer The non-magnetic orientation controller layer serves as a layer for controlling crystalline orientation in an upper layer. A magnetic recording layer extends on the surface of the non-magnetic orientation controller layer. The perpendicular magnetic recording medium allows a reliable establishment of a uniform crystalline orientation in the magnetic recording layer based on the influences from the magnetic and non-magnetic orientation controller layers. A reliable establishment of a uniform crystalline orientation can be achieved without an increase in the thickness of the non-magnetic orientation controller layer.
摘要翻译： 垂直磁记录介质包括用作控制上层结晶取向层的磁性取向控制层。 非磁性取向控制层在磁性取向控制层的表面上延伸。非磁性取向控制层用作控制上层结晶取向的层。 磁记录层在非磁性取向控制层的表面上延伸。 垂直磁记录介质基于来自磁和非磁性取向控制层的影响，允许在磁记录层中可靠地建立均匀的晶体取向。 可以在不增加非磁性取向控制层的厚度的情况下实现均匀结晶取向的可靠建立。
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公开(公告)号：US06677023B2
公开(公告)日：2004-01-13
申请号：US09812673
申请日：2001-03-20
申请人： Hiroto Takeshita , Hitoshi Komoriya
发明人： Hiroto Takeshita , Hitoshi Komoriya
IPC分类号： G11B566
CPC分类号： B82Y10/00 , G11B5/59633 , G11B5/74 , G11B5/743 , G11B5/82 , G11B5/84 , G11B5/855 , Y10S428/90 , Y10T428/12757
摘要： A non-magnetic substrate for a magnetic recording medium is formed or molded within a die. The die is designed to define embedment depressions on the surface of the resulting non-magnetic substrate. Any bumps or lugs formed on the inner surface of the die can be employed to form the embedment depressions on the non-magnetic substrate. A magnetic material fills the individual embedment depression so as to establish a magnetic block embedded into the surface of the non-magnetic substrate. The magnetic block can be utilized as a positional mark in a tracking servo control for a corresponding read/write head in a magnetic storage system.
摘要翻译： 用于磁记录介质的非磁性基板在模具内形成或模制。 模具被设计成在所得非磁性基板的表面上限定嵌入凹陷。 可以使用形成在模具内表面上的任何凸起或凸耳，以在非磁性基底上形成嵌入凹陷。 磁性材料填充单个嵌入凹陷，以便建立嵌入非磁性基底表面的磁性块。 磁性块可以用作磁存储系统中对应的读/写头的跟踪伺服控制中的位置标记。
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公开(公告)号：US20070223139A1
公开(公告)日：2007-09-27
申请号：US11509194
申请日：2006-08-23
CPC分类号： G11B5/3163 , G11B5/1278 , G11B5/1871 , G11B5/3116 , G11B5/3169 , Y10T29/49037
摘要： The method of the present invention is capable of highly precisely producing a magnetic head. The method comprises the steps of: forming a pole end part of a magnetic layer, which becomes a magnetic pole and which is formed on a surface of a work piece on which the magnetic head will be formed, into a prescribed shape; coating at least a top part of the magnetic layer with a stopper layer; coating a surface of the work piece, on which the stopper layer has been formed, with an insulating layer, whose polishing rate is higher than that of the stopper layer; polishing the surface of the work piece until the stopper layer, which coats the top part of the magnetic layer, is exposed from the insulating layer; and removing the stopper layer, which has been exposed in a surface of the magnetic layer.
摘要翻译： 本发明的方法能够高精度地制造磁头。 该方法包括以下步骤：形成磁性层的极端部，该磁性层成为磁极并形成在其上将形成磁头的工件的表面上形成规定的形状; 用止动层涂覆至少一个磁性层的顶部; 用绝缘层涂覆其上形成有阻挡层的工件的表面，其抛光速率高于阻挡层的抛光速率; 抛光工件的表面，直到覆盖磁性层的顶部的阻挡层从绝缘层露出; 并且去除已经暴露在磁性层的表面中的阻挡层。
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公开(公告)号：US20050249982A1
公开(公告)日：2005-11-10
申请号：US11088241
申请日：2005-03-23
申请人： Hiroto Takeshita , Maki Maeda , Takuya Uzumaki
发明人： Hiroto Takeshita , Maki Maeda , Takuya Uzumaki
CPC分类号： G11B5/66 , G11B5/012 , G11B5/656 , G11B2005/0029 , Y10T428/24975
摘要： A magnetic recording layer is formed on an auxiliary magnetic layer in a perpendicular magnetic recording medium. The auxiliary magnetic layer has the axis of easy magnetization in the vertical direction perpendicular to the surface of a substrate. The perpendicular magnetic recording medium reliably allows establishment of the magnetization in the auxiliary magnetic layer in the vertical direction. When a magnetic flux flows along the vertical direction perpendicular to the surface of the magnetic recording layer, the magnetic flux flows across the magnetic recording layer in the vertical direction. The magnetization is thus reliably established in the magnetic recording layer in the vertical direction. The magnetic field of a stronger intensity is thus leaked out of the magnetic recording layer in the vertical direction.
摘要翻译： 在垂直磁记录介质中的辅助磁性层上形成磁记录层。 辅助磁性层在垂直于衬底表面的垂直方向具有容易磁化的轴。 垂直磁记录介质可靠地允许在垂直方向上建立辅助磁性层中的磁化。 当磁通量沿垂直于磁记录层表面的垂直方向流动时，磁通量在垂直方向上流过磁记录层。 因此磁化在磁记录层中沿垂直方向可靠地建立。 因此，较强的强度的磁场在垂直方向从磁记录层泄漏出来。
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20.发明授权Method for manufacturing a magnetic hard disk having concentric magnetic tracks with flat surface 失效具有平坦表面的同心磁迹的磁性硬盘的制造方法公开(公告)号：US06586044B1
公开(公告)日：2003-07-01
申请号：US10256447
申请日：2002-09-27
IPC分类号： B05D512
CPC分类号： G11B5/72 , G11B5/82 , G11B5/8408 , G11B5/855
摘要： A magnetic hard disk having magnetic tracks for storing data which is read or written by a magnetic head floating immediately above the magnetic track while the magnetic hard disk is rotating, and the magnetic head rests on the magnetic hard disk while the magnetic hard disk is not rotating. One aspect of the present invention is that the magnetic hard disk comprises a non-magnetic substrate having a plurality of banks and grooves alternately and concentrically arranged thereon, a magnetic film formed on each of the banks, and non-magnetic material formed on an entire surface of the substrate all over the banks and grooves such that roughness of the upper surface of the non-magnetic material is in a range between 0.5 nm and 3 nm.
摘要翻译： 一种具有磁道的磁性硬盘，用于存储在磁性硬盘旋转时立即在磁道上方浮动的磁头读取或写入的数据，并且磁头在磁性硬盘不支持时磁头靠在磁性硬盘上 旋转。 本发明的一个方面是磁性硬盘包括一个非磁性基片，它具有交替地同心地布置在其上的多个堤和槽，形成在每个堤上的磁性膜，以及整个形成的非磁性材料 基板的表面遍及堤和槽，使得非磁性材料的上表面的粗糙度在0.5nm和3nm之间的范围内。
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