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公开(公告)号：US5981054A
公开(公告)日：1999-11-09
申请号：US897677
申请日：1997-07-21
申请人： Takashi Hikosaka , Tsutomu Tanaka , Yoichiro Tanaka , Katsutaro Ichihara , Keiichiro Yusu , Akira Kikitsu
发明人： Takashi Hikosaka , Tsutomu Tanaka , Yoichiro Tanaka , Katsutaro Ichihara , Keiichiro Yusu , Akira Kikitsu
CPC分类号： G11B5/65 , G11B5/64 , G11B5/656 , G11B5/855 , Y10S428/90 , Y10T428/256 , Y10T428/2991
摘要： A magnetic recording medium comprising a substrate and a magnetic film formed on the substrate, the magnetic film including magnetic crystal grains in a non-magnetic matrix and satisfying the condition given below:d.sup.2 .multidot.t.multidot.Ir/(v.multidot.Isb).gtoreq.0.75wheret: a thickness of the magnetic film;Ir: a remanent magnetization moment of the magnetic film;d: an average particle size of the magnetic crystal grains in an intra-film direction of the magnetic film; andv.multidot.Isb: an activated magnetization moment of the magnetic film.
摘要翻译： 一种磁性记录介质，包括在基板上形成的基板和磁性膜，该磁性膜包括非磁性矩阵中的磁性晶粒并且满足以下条件：d2xtxIr /（vxIsb）> / = 0.75其中t：厚度 的磁膜; Ir：磁膜的剩磁化力矩; d：磁性膜的膜内方向的磁性晶粒的平均粒径; 和vxIsb：磁膜的激活的磁化力矩。
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公开(公告)号：US07319568B2
公开(公告)日：2008-01-15
申请号：US11182065
申请日：2005-07-15
IPC分类号： G11B5/09
CPC分类号： G11B5/74 , B82Y10/00 , G11B5/59688 , G11B5/743 , G11B5/82 , G11B5/855 , G11B5/865 , G11B2005/0029
摘要： A magnetic recording media has a magnetic layer formed on a substrate and includes data regions including a magnetic pattern constituting a recoding track and servo regions including magnetic patterns used as address bits, the data regions and the servo regions being contained in a plane of the magnetic layer. In a case where two magnetic patterns used as address bits on the servo regions corresponding to two adjacent recording tracks are arranged in such a manner that one corner of one of the magnetic patterns is closest to one corner of the other, the corners of the two magnetic patterns are substantially joined together.
摘要翻译： 磁记录介质具有形成在基板上的磁性层，并且包括包括构成记录轨迹的磁图案和包括用作地址位的磁图案的伺服区域的数据区域，数据区域和伺服区域被包含在磁性平面中 层。 在与两个相邻的记录磁道对应的伺服区域上用作地址位的两个磁图形被布置成使得一个磁性图案的一个角最靠近另一个的角部的情况下， 磁性图案基本上连接在一起。
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3.发明申请Patterned disk medium for vertical magnetic recording, and magnetic disk drive with the medium 失效用于垂直磁记录的图形磁盘介质，以及带介质的磁盘驱动器公开(公告)号：US20060012903A1
公开(公告)日：2006-01-19
申请号：US11181958
申请日：2005-07-15
申请人： Makoto Asakura , Yoichiro Tanaka , Akira Kikitsu
发明人： Makoto Asakura , Yoichiro Tanaka , Akira Kikitsu
摘要： A patterned disk medium includes a disk-shaped flat substrate including a first surface and a second surface located an opposite side of the first surface. First servo pattern areas including portions provided with magnetic members and portions provided with no magnetic members are provided on the first surface. Second servo pattern areas including portions provided with magnetic members and portions provided with no magnetic members are provided on the second surface. The magnetic members of the first and second servo pattern areas are magnetized in a direction perpendicular to the first and second surfaces. The magnetic polarity of the surfaces of the magnetic members of the second pattern areas differs from that of the surfaces of the magnetic members of the first pattern areas.
摘要翻译： 图案化的盘介质包括盘状平坦基板，其包括第一表面和位于第一表面相对侧的第二表面。 在第一表面上设置有包括设置有磁性部件的部分和没有磁性部件的部分的第一伺服图案区域。 第二伺服模式区域包括设置有磁性构件的部分和没有磁性构件的部分设置在第二表面上。 第一和第二伺服图案区域的磁性构件在垂直于第一和第二表面的方向上被磁化。 第二图案区域的磁性构件的表面的磁极性不同于第一图案区域的磁性构件的表面的磁极性。
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公开(公告)号：US20060012905A1
公开(公告)日：2006-01-19
申请号：US11182065
申请日：2005-07-15
CPC分类号： G11B5/74 , B82Y10/00 , G11B5/59688 , G11B5/743 , G11B5/82 , G11B5/855 , G11B5/865 , G11B2005/0029
摘要： A magnetic recording media has a magnetic layer formed on a substrate and includes data regions including a magnetic pattern constituting a recoding track and servo regions including magnetic patterns used as address bits, the data regions and the servo regions being contained in a plane of the magnetic layer. In a case where two magnetic patterns used as address bits on the servo regions corresponding to two adjacent recording tracks are arranged in such a manner that one corner of one of the magnetic patterns is closest to one corner of the other, the corners of the two magnetic patterns are substantially joined together.
摘要翻译： 磁记录介质具有在基板上形成的磁性层，并且包括包括构成记录轨迹的磁图案的数据区域和包括用作地址位的磁图案的伺服区域，数据区域和伺服区域包含在磁性平面中 层。 在与两个相邻的记录磁道对应的伺服区域上用作地址位的两个磁图形被布置成使得一个磁性图案的一个角最靠近另一个的角部的情况下， 磁性图案基本上连接在一起。
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5.发明授权Patterned disk medium for vertical magnetic recording, and magnetic disk drive with the medium 失效用于垂直磁记录的图形磁盘介质，以及带介质的磁盘驱动器公开(公告)号：US07443626B2
公开(公告)日：2008-10-28
申请号：US11181958
申请日：2005-07-15
申请人： Makoto Asakura , Yoichiro Tanaka , Akira Kikitsu
发明人： Makoto Asakura , Yoichiro Tanaka , Akira Kikitsu
IPC分类号： G11B15/14
摘要： A patterned disk medium includes a disk-shaped flat substrate including a first surface and a second surface located an opposite side of the first surface. First servo pattern areas including portions provided with magnetic members and portions provided with no magnetic members are provided on the first surface. Second servo pattern areas including portions provided with magnetic members and portions provided with no magnetic members are provided on the second surface. The magnetic members of the first and second servo pattern areas are magnetized in a direction perpendicular to the first and second surfaces. The magnetic polarity of the surfaces of the magnetic members of the second pattern areas differs from that of the surfaces of the magnetic members of the first pattern areas.
摘要翻译： 图案化的盘介质包括盘状平坦基板，其包括第一表面和位于第一表面相对侧的第二表面。 在第一表面上设置有包括设置有磁性部件的部分和没有磁性部件的部分的第一伺服图案区域。 第二伺服模式区域包括设置有磁性构件的部分和没有磁性构件的部分设置在第二表面上。 第一和第二伺服图案区域的磁性构件在垂直于第一和第二表面的方向上被磁化。 第二图案区域的磁性构件的表面的磁极性不同于第一图案区域的磁性构件的表面的磁极性。
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公开(公告)号：US6128166A
公开(公告)日：2000-10-03
申请号：US444106
申请日：1995-05-18
IPC分类号： G11B5/02 , G11B5/00 , G11B5/012 , G11B5/024 , G11B5/09 , G11B5/23 , G11B5/265 , G11B5/31 , G11B5/39 , G11B5/82
CPC分类号： G11B5/012 , G11B5/82 , G11B2005/0029 , G11B5/3103 , G11B5/3116 , G11B5/3967
摘要： According to this invention, there is provided a magnetic recording/reproducing system having a recording head for recording a signal in a magnetic recording medium along recording tracks having a predetermined track pitch and a reproducing head for reproducing the recorded signal. A relationship between a recording track width Tw of the recording head and a reproduction width Tr of the reproducing head is defined as Tr>Tw. When conditions g
摘要翻译： 根据本发明，提供一种具有记录头的磁记录/再现系统，该记录头用于沿着具有预定轨道间距的记录道和用于再现记录信号的再现头在磁记录介质中记录信号。 记录头的记录道宽度Tw与再现头的再现宽度Tr之间的关系被定义为Tr> Tw。 当条件g <（1500 / Hc-Hc / 4000pi + 0.3）/（Hc / 400pi- + E，fra 1/2 + EE）和g> / =（1500 / Hc-Hc / Tp + Tw）/（Hc /400π-+ E，fra1 / 2 + EE），在记录轨道之间形成擦除区域。 在这种情况下，记录头的间隙长度由g表示，记录磁道宽度由Tw表示，磁道间距由Tp表示，矫顽力 记录介质由Hc [Oe]表示。
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公开(公告)号：US5942342A
公开(公告)日：1999-08-24
申请号：US960120
申请日：1997-10-27
CPC分类号： G11B5/66 , G11B5/656 , Y10S428/90 , Y10T428/12458 , Y10T428/12465 , Y10T428/12535 , Y10T428/12611
摘要： A magnetic recording apparatus comprising a perpendicular recording medium, a recording head for perpendicular magnetization the perpendicular magnetization film of the recording medium, to thereby recording signals on the recording medium, and a reproducing head of magnetoresistance type for reading signals from the recording medium. The medium comprises a substrate, an underlayer formed on the substrate, and a perpendicular magnetization film formed on the substrate and having a crystal phase of a CoPt-based alloy and a compound phase of material selected from the group consisting of Co oxide, Co nitride and Co carbide.
摘要翻译： 一种磁记录装置，包括垂直记录介质，用于使记录介质的垂直磁化膜垂直磁化的记录头，从而在记录介质上记录信号，以及用于从记录介质读取信号的磁阻型再现头。 所述介质包括基板，形成在所述基板上的底层，以及在所述基板上形成的具有CoPt基合金的晶相和选自Co氧化物，Co氮化物的材料的化合物相的垂直磁化膜 和Co碳化物。
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公开(公告)号：US5792564A
公开(公告)日：1998-08-11
申请号：US470463
申请日：1995-06-06
CPC分类号： G11B5/66 , G11B5/656 , Y10S428/90 , Y10T428/12458 , Y10T428/12465 , Y10T428/12535 , Y10T428/12611
摘要： A longitudinal recording medium and a magnetic recording apparatus containing the same, comprising a substrate and a longitudinal magnetization film formed on the substrate containing grains of a Co-based alloy, and exhibiting an oxygen concentration distribution having two peaks as follows: a peak of higher oxygen concentration pertaining to grain boundaries of the longitudinal magnetization film, and a peak of lower oxygen concentration pertaining to grain interiors of the longitudinal magnetization film.
摘要翻译： 一种纵向记录介质和含有该记录介质的磁记录装置，包括在包含Co基合金颗粒的基板上形成的基板和纵向磁化膜，并显示具有两个峰的氧浓度分布如下：高 与纵向磁化膜的晶界相关的氧浓度以及与纵向磁化膜的晶粒内部相关的较低的氧浓度的峰值。
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公开(公告)号：US5486967A
公开(公告)日：1996-01-23
申请号：US212120
申请日：1994-03-14
申请人： Yoichiro Tanaka , Kazushi Tanimoto , Hiroshi Ohashi , Takashi Hikosaka , Yasuo Ohtsubo , Shigeru Hoshina
发明人： Yoichiro Tanaka , Kazushi Tanimoto , Hiroshi Ohashi , Takashi Hikosaka , Yasuo Ohtsubo , Shigeru Hoshina
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/10 , G11B5/1278 , G11B5/39 , G11B5/3903 , G11B5/3919 , G11B5/58 , G11B2005/0029 , G11B2005/3996
摘要： According to the present invention, there is provided a magnetic disk memory system. An embodiment of this system comprises a magnetic disk of a perpendicular recording type, including a soft magnetic backing layer and a magnetic recording layer of a perpendicular magnetic anisotropy formed on the backing layer, and a magnetic head for writing or reading of data with respect to the magnetic disk, wherein the magnetic head comprises (a) a pair of main magnetic poles each of which made of a material having a high magnetic permeability, one end of the each pole being located so as to face the magnetic disk surface, (b) a non-magnetic interlayer provided between two main magnetic poles of the pair, (c) a recording coil disposed so as to generate a magnetic flux passing through the magnetic disk via the main magnetic poles, and (d) an MR element provided via an insulation layer on the other ends of the pair of main magnetic poles, one MR element having a film surface parallel to end surfaces of the other ends of the main magnetic poles, and being magnetically coupled with the pair of main magnetic poles.
摘要翻译： 根据本发明，提供了一种磁盘存储系统。 该系统的一个实施例包括垂直记录类型的磁盘，包括形成在背衬层上的软磁背衬层和垂直磁各向异性的磁记录层，以及用于写入或读取相对于 所述磁头包括（a）一对主磁极，每个主磁极由具有高磁导率的材料制成，每个磁极的一端被定位成面对磁盘表面，（b ）设置在该对的两个主磁极之间的非磁性中间层，（c）设置成经由主磁极产生穿过磁盘的磁通的记录线圈，以及（d）经由 在一对主磁极的另一端上的绝缘层，一个MR元件，其膜表面平行于主磁极的另一端的端面，并与t磁性耦合 他的一对主磁极。
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10.发明授权公开(公告)号：US06846581B2
公开(公告)日：2005-01-25
申请号：US10101949
申请日：2002-03-21
IPC分类号： G11B5/64 , G11B5/65 , G11B5/66 , G11B5/667 , G11B5/673 , G11B5/738 , H01F10/16 , H01F10/30 , B32B19/00
CPC分类号： G11B5/66
摘要： Disclosed is a perpendicular magnetic recording medium, comprising a nonmagnetic substrate, a longitudinal hard magnetic multi-layered film arranged on the nonmagnetic substrate, including a nonmagnetic intermediate layer and a pair of hard magnetic layers laminated one upon the other with the nonmagnetic intermediate layer interposed therebetween, and having at least two hard magnetic layers, a longitudinal soft magnetic layer formed on the longitudinal hard magnetic multi-layered film, and a perpendicular magnetic recording layer formed on the longitudinal soft magnetic layer. The perpendicular magnetic recording medium of the particular construction is capable of suppressing noise and achieves a high recording magnetic field intensity and a high recording resolution.
摘要翻译： 公开了一种垂直磁记录介质，包括非磁性基板，布置在非磁性基板上的纵向硬磁性多层膜，包括非磁性中间层和一对彼此层叠的硬磁性层，其中非磁性中间层插入 并且具有至少两个硬磁性层，形成在纵向硬磁性多层膜上的纵向软磁性层和形成在纵向软磁性层上的垂直磁记录层。 具体结构的垂直磁记录介质能够抑制噪声，并且实现高记录磁场强度和高记录分辨率。
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