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1. 发明授权

US06876506B1 Information recording medium, information recording/reproducing head, and information storage device 失效
标题翻译：信息记录介质，信息记录/再现头和信息存储装置
公开(公告)号：US06876506B1
公开(公告)日：2005-04-05
申请号：US09959854
申请日：2000-05-10
申请人： Koichiro Wakabayashi , Nobuyuki Inaba , Teruaki Takeuchi
发明人： Koichiro Wakabayashi , Nobuyuki Inaba , Teruaki Takeuchi
IPC分类号： G11B5/48 , G11B5/596 , G11B21/10 , G11B5/09
CPC分类号： G11B5/59655 , G11B5/4886 , G11B5/59683 , G11B21/106
摘要： An information recording medium, an information recording/reproduction head, and an information storage device are provided for performing a track servo operation at a smaller track pitch than that conventionally used without reducing the widths of servo burst patterns. The widths of servo burst patterns (107, 108, 109, 110) are increased over a track pitch (TP) and the end of the servo burst pattern is disposed so as not to coincide with a center line (111) of an information track. In addition, a servo magnetic head (112) and a reproduction magnetic head (113) are implemented in one magnetoresistance element (159).
摘要翻译：提供信息记录介质，信息记录/再现头和信息存储装置，用于以比现有技术更小的轨道间距执行轨道伺服操作，而不减少伺服突发图案的宽度。伺服突发模式（107,108,109,110）的宽度在轨道间距（TP）上增加，并且伺服脉冲串模式的结束被设置为不与信息轨迹的中心线（111）重合。此外，在一个磁阻元件（159）中实现伺服磁头（112）和再现磁头（113）。

2. 发明授权

US06893746B1 Magnetic recording medium with high thermal stability, method for producing the same, and magnetic recording apparatus 失效
标题翻译：具有高热稳定性的磁记录介质，其制造方法和磁记录装置
公开(公告)号：US06893746B1
公开(公告)日：2005-05-17
申请号：US10111608
申请日：2000-10-30
申请人： Fumiyoshi Kirino , Norio Ohta , Kouichirou Wakabayashi , Teruaki Takeuchi , Harumi Hieida , Masaki Sekine , Hiroyuki Awano , Akira Yano , Satoshi Matsunuma , Nobuyuki Inaba , Tetsunori Koda
发明人： Fumiyoshi Kirino , Norio Ohta , Kouichirou Wakabayashi , Teruaki Takeuchi , Harumi Hieida , Masaki Sekine , Hiroyuki Awano , Akira Yano , Satoshi Matsunuma , Nobuyuki Inaba , Tetsunori Koda
IPC分类号： G11B5/00 , G11B5/64 , G11B5/66 , G11B5/74 , G11B5/82 , G11B5/70 , G11B11/105
CPC分类号： G11B5/65 , G11B5/00 , G11B5/656 , G11B5/66 , G11B5/667 , G11B5/7325 , G11B5/74 , G11B5/82 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021
摘要： A magnetic recording medium comprises an information-recording film and a ferromagnetic film on a substrate. The information-recording film is composed of, for example, an amorphous ferrimagnetic material having perpendicular magnetization. Further, the ferromagnetic film is composed of a magnetic material which has saturation magnetization larger than that of the information-recording film. Accordingly, the leak magnetic flux from the ferromagnetic film is larger than that from the information-recording film. The magnetic recording medium and a magnetic recording apparatus are obtained, which are excellent in thermal stability and which are preferred to perform super high density recording.
摘要翻译：磁记录介质包括在基板上的信息记录膜和铁磁膜。信息记录膜由例如具有垂直磁化的非晶铁磁材料构成。此外，铁磁膜由具有比信息记录膜的饱和磁化强度大的饱和磁化强度的磁性材料构成。因此，来自铁磁膜的泄漏磁通量大于来自信息记录膜的漏磁通量。获得磁性记录介质和磁记录装置，其热稳定性优异，并且优选进行超高密度记录。

3. 发明授权

US06674594B1 Read/write head and magnetic recording device 失效
标题翻译：读/写磁头和磁记录装置
公开(公告)号：US06674594B1
公开(公告)日：2004-01-06
申请号：US10031338
申请日：2002-01-25
申请人： Kouichirou Wakabayashi , Teruaki Takeuchi , Nobuyuki Inaba
发明人： Kouichirou Wakabayashi , Teruaki Takeuchi , Nobuyuki Inaba
IPC分类号： G11B502
CPC分类号： G11B5/127 , G11B5/00 , G11B5/012 , G11B5/3103 , G11B5/3967 , G11B5/4886 , G11B5/596 , G11B5/59627 , G11B5/59655 , G11B5/59683 , G11B13/045 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021
摘要： A magnetic recording apparatus includes a laser light source (132), a recording magnetic head (131) and a magnetoresistive element. The recording magnetic head includes a pair of magnetic poles (100 and 101), between which the magnetoresistive element is interposed. A rotary actuator (Sa) positions the recording magnetic head at a desired track of a magnetic recording medium. A laser beam can be radiated onto the magnetic recording medium to raise the temperature of a region (302) of the medium. This region has a width of the order of the track width. The raised temperature lowers the coercive force of this region, where a recording magnetic field can be applied for high density recording. The rotary actuator may form a yaw angle (&thgr;) with a track of the magnetic recording medium. Even in this case, the recording magnetic head (131) and the reproducing element have no tracking offset from the code track. In addition, if the size of the magnetic poles (100 and 101) of the recording magnetic head are set within a predetermined range, the region (302) heated by the laser beam does not deviate from a recording magnetic field application region (303).
摘要翻译：磁记录装置包括激光源（132），记录磁头（131）和磁阻元件。记录磁头包括一对磁极（100和101），磁阻元件插在其间。旋转致动器（Sa）将记录磁头定位在磁记录介质的期望轨道处。可以将激光束照射到磁记录介质上以升高介质的区域（302）的温度。该区域具有轨道宽度顺序的宽度。升高的温度降低了该区域的矫顽力，其中可以应用记录磁场用于高密度记录。旋转致动器可以与磁记录介质的轨道形成偏航角（θ）。即使在这种情况下，记录磁头（131）和再现元件也没有跟踪轨迹的跟踪偏移。此外，如果将记录磁头的磁极（100和101）的尺寸设定在预定范围内，则由激光束加热的区域（302）不会偏离记录磁场施加区域（303）。

4. 发明授权

US06541125B2 Magnetic recording medium 有权
公开(公告)号：US06541125B2
公开(公告)日：2003-04-01
申请号：US10001995
申请日：2001-12-05
申请人： Masaaki Futamoto , Nobuyuki Inaba , Yoshiyuki Hirayama , Teruaki Takeuchi , Yukio Honda
发明人： Masaaki Futamoto , Nobuyuki Inaba , Yoshiyuki Hirayama , Teruaki Takeuchi , Yukio Honda
IPC分类号： G11B566
CPC分类号： G11B5/7325 , G11B5/656 , Y10S428/90 , Y10T428/12465 , Y10T428/12854 , Y10T428/265
摘要： A magnetic recording medium includes a substrate, an underlayer provided on the substrate, a Co alloy magnetic film formed through the underlayer, and a protective film for protecting the magnetic film, wherein the underlayer has a two-layer structure of an lower underlayer contacted with the substrate and an upper underlayer contacted with the Co alloy magnetic film, the upper underlayer is a Co—Crx—My alloy film having a hexagonal close-packed structure, where 25 atomic %≦x+y≦50 atomic %, 0.5 atomic %≦y, nonmagnetic element M is one selected from the group of elements B, Si, Ge, C, Al, P, Ti, V, Nb, Zr, Hf, Mn, Rh, Os, Ir, Re, Pd, Pt, Mo, Ta, W, Ag and Au. Thereby the medium can be increased in its coercive force and can be improved in its thermal stability characteristics.

5. 发明授权

US06383667B1 Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US06383667B1
公开(公告)日：2002-05-07
申请号：US09413813
申请日：1999-10-07
申请人： Masaaki Futamoto , Nobuyuki Inaba , Yoshiyuki Hirayama , Teruaki Takeuchi , Yukio Honda
发明人： Masaaki Futamoto , Nobuyuki Inaba , Yoshiyuki Hirayama , Teruaki Takeuchi , Yukio Honda
IPC分类号： G11B566
CPC分类号： G11B5/7325 , G11B5/656 , Y10S428/90 , Y10T428/12465 , Y10T428/12854 , Y10T428/265
摘要： A magnetic recording medium includes a substrate, an underlayer provided on the substrate, a Co alloy magnetic film formed through the underlayer, and a protective film for protecting the magnetic film, wherein the underlayer has a two-layer structure of an lower underlayer contacted with the substrate and an upper underlayer contacted with the Co alloy magnetic film, the upper underlayer is a Co—Crx—My alloy film having a hexagonal close-packed structure, where 25 atomic %≦x+y≦50 atomic %, 0.5 atomic %≦y, nonmagnetic element M is one selected from the group of elements B, Si, Ge, C, Al, P, Ti, V, Nb, Zr, Hf, Mn, Rh, Os, Ir, Re, Pd, Pt, Mo, Ta, W, Ag and Au. Thereby the medium can be increased in its coercive force and can be improved in its thermal stability characteristics.
摘要翻译：磁记录介质包括基板，设置在基板上的底层，通过底层形成的Co合金磁膜和用于保护磁性膜的保护膜，其中底层具有与下层接触的下层结构基底和与Co合金磁膜接触的上基底层，上底层是具有六方密堆积结构的Co-Crx-My合金膜，其中25原子％<= x + y <= 50原子％，0.5 原子％<= y，非磁性元素M是选自元素B，Si，Ge，C，Al，P，Ti，V，Nb，Zr，Hf，Mn，Rh，Os，Ir，Re，Pd ，Pt，Mo，Ta，W，Ag和Au。因此，介质的矫顽力可以提高，并且可以提高其热稳定性。

6. 发明授权

US06365287B1 Magnetic recording media and magnetic storage device 有权
标题翻译：磁记录介质和磁存储装置
公开(公告)号：US06365287B1
公开(公告)日：2002-04-02
申请号：US09487172
申请日：2000-01-19
申请人： Nobuyuki Inaba , Tomoo Yamamoto , Teruaki Takeuchi , Masukazu Igarashi , Yoshio Takahashi
发明人： Nobuyuki Inaba , Tomoo Yamamoto , Teruaki Takeuchi , Masukazu Igarashi , Yoshio Takahashi
IPC分类号： G11B566
CPC分类号： G11B5/65 , G11B5/714
摘要： It is an object of the present invention to provide a magnetic recording medium which has a high level of magnetic anisotropy energy, retains stably the state of recording magnetization within the operating temperature range and is suitable for high-density recording with a low noise level, and a magnetic storage device for the magnetic recording medium. For attaining the above object, the magnetic recording film of the magnetic recording medium is characterized in that its magnetic anisotropy energy constant Ku at an absolute temperature of 300 K is greater than 3.6×106 erg/cc and the average particle diameter is larger than 5 nm and smaller than 12 nm.
摘要翻译：本发明的目的是提供一种具有高水平的磁各向异性能的磁记录介质，将记录磁化的状态稳定地保持在工作温度范围内并且适合于具有低噪声水平的高密度记录，以及用于磁记录介质的磁存储装置。为了达到上述目的，磁记录介质的磁记录膜的特征在于其绝对温度为300K时的磁各向异性能常数Ku大于3.6×10 6 erg / cc，平均粒径大于5nm 并小于12nm。

7. 发明授权

US06699602B2 Amorphous magnetic recording medium, process for producing the same and magnetic recording and reproduction apparatus 失效
标题翻译：非晶磁记录介质，其制造方法和磁记录和再现装置
公开(公告)号：US06699602B2
公开(公告)日：2004-03-02
申请号：US10084944
申请日：2002-03-01
申请人： Mitsutoshi Honda , Hiroki Yamamoto , Takashi Naito , Tatsumi Hirano , Tetsuo Nakazawa , Fumiyoshi Kirino , Teruaki Takeuchi , Akira Yano , Nobuyuki Inaba , Satoshi Matsunuma
发明人： Mitsutoshi Honda , Hiroki Yamamoto , Takashi Naito , Tatsumi Hirano , Tetsuo Nakazawa , Fumiyoshi Kirino , Teruaki Takeuchi , Akira Yano , Nobuyuki Inaba , Satoshi Matsunuma
IPC分类号： G11B566
CPC分类号： G11B5/7325 , G11B5/72 , G11B5/8404 , G11B5/8408 , Y10S428/90 , Y10T428/12465 , Y10T428/12618
摘要： An amorphous magnetic recording medium comprising a substrate and an amorphous magnetic layer, where a magnetic domain formation-controlling layer comprising a main phase and 1 to 3 kinds of discrete spherical isolating phases arranged horizontally in lines in the main phase or 1 to 3 kinds of discrete spherical phases vertically stacked one upon another in the main phase is formed on the top side or the bottom side directly or through at least one of other layers to bring the amorphous magnetic layer into a finer magnetic domain structure, can satisfy high density recording.
摘要翻译：一种非晶磁记录介质，包括基板和非晶磁性层，其中包括主相的磁畴形成控制层和主相中的水平排列的1至3种离散的球形隔离相或1至3种在主相中垂直层叠的离散球相直接或通过其它层中的至少一个形成在顶侧或底侧，以使非晶磁性层进入更细的磁畴结构，可以满足高密度记录。

8. 发明授权

US06627255B2 Method of manufacturing a magnetic recording media 失效
标题翻译：制造磁记录介质的方法
公开(公告)号：US06627255B2
公开(公告)日：2003-09-30
申请号：US10056088
申请日：2002-01-28
申请人： Nobuyuki Inaba , Tomoo Yamamoto , Teruaki Takeuchi , Masukazu Igarashi , Yoshio Takahashi
发明人： Nobuyuki Inaba , Tomoo Yamamoto , Teruaki Takeuchi , Masukazu Igarashi , Yoshio Takahashi
IPC分类号： B05D512
CPC分类号： G11B5/65 , G11B5/714
摘要： It is an object of the present invention to provide a magnetic recording medium which has a high level of magnetic antisotropy energy, retains stably the state of recording magnetization within the operating temperature range and is suitable for high-density recording with a low noise level, and a magnetic storage device for the magnetic recording medium. For attaining the above object, the magnetic recording film of the magnetic recording medium is characterized in that its magnetic anisotropy energy constant Ku at an absolute temperature of 300 K is greater than 3.6×106 erg/cc and the average particle diameter is larger than 5 nm and smaller than 12 nm.
摘要翻译：本发明的目的是提供一种具有高水平的磁性反向能量的磁记录介质，将记录磁化的状态稳定地保持在工作温度范围内，并适用于具有低噪声水平的高密度记录，以及用于磁记录介质的磁存储装置。为了实现上述目的，磁记录介质的磁记录膜的特征在于其绝对温度为300K的磁各向异性能常数Ku大于3.6×10 6 / g / cc，平均粒径较大超过5nm且小于12nm。

9. 发明授权

US06970400B1 Information recording medium with magnetic marks, recording and reproducing apparatus therefor, and head positioning method using detected magnetic leakage fields from the magnetic marks 失效
标题翻译：具有磁痕的信息记录介质，其记录和再现装置以及使用来自磁痕的检测到的磁泄漏场的磁头定位方法
公开(公告)号：US06970400B1
公开(公告)日：2005-11-29
申请号：US09671478
申请日：2000-09-27
申请人： Kouichirou Wakabayashi , Tsuyoshi Onuma , Teruaki Takeuchi , Nobuyuki Inaba , Fumiyoshi Kirino
发明人： Kouichirou Wakabayashi , Tsuyoshi Onuma , Teruaki Takeuchi , Nobuyuki Inaba , Fumiyoshi Kirino
IPC分类号： G11B5/00 , G11B5/012 , G11B5/48 , G11B5/55 , G11B5/596 , G11B5/74 , G11B5/82 , G11B11/00 , G11B13/04
CPC分类号： G11B13/045 , G11B5/012 , G11B5/488 , G11B5/5526 , G11B5/59677 , G11B5/74 , G11B5/82 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021
摘要： A recording and reproducing apparatus including a recording magnetic head and a reproducing magnetic head with their floating height lowered for high density recordation and reproduction is provided. An information recording medium is provided on which it is possible to densely record information and from which it is possible to densely reproduce information by lowering the floating height of the recording and reproducing heads. The information recording medium includes a flat substrate and a recording layer provided on the substrate. Servo patterns and management information are recorded as magnetic marks on the recording layer in advance by a servo writer or the like. Because the substrate needs no recessed and embossed patterns formed in it, the slider of the recording and reproducing apparatus can be floated at a constant floating height lower than conventionally over the whole area of the medium. During information recordation, the position of the slider is controlled on the basis of the magneto-optical signals from the magnetic marks. During information reproduction, the reproducing magnetic head controls the slider position on the basis of the magnetic leakage fields leaking from the magnetic marks.
摘要翻译：提供包括记录磁头和其浮动高度降低以用于高密度记录和再现的再现磁头的记录和再现装置。提供一种信息记录介质，在该信息记录介质上可以密集地记录信息，并且可以通过降低记录和再现磁头的浮动高度从而可以密集地再现信息。信息记录介质包括平坦基板和设置在基板上的记录层。伺服模式和管理信息通过伺服写入器等预先记录在记录层上作为磁标记。因为基板不需要在其中形成凹陷和压花图案，所以记录和再现装置的滑动件可以浮动在比传统的介质整个区域以下的恒定浮动高度。在信息记录期间，滑块的位置是根据来自磁痕的磁光信号进行控制的。在信息再现期间，再现磁头基于从磁痕泄漏的磁泄漏场来控制滑块位置。

10. 发明授权

US06730421B1 Magnetic recording medium and its production method, and magnetic recorder 失效
标题翻译：磁记录介质及其制作方法，磁记录仪
公开(公告)号：US06730421B1
公开(公告)日：2004-05-04
申请号：US09959855
申请日：2001-11-09
申请人： Fumiyoshi Kirino , Nobuyuki Inaba , Teruaki Takeuchi , Kouichirou Wakabayashi
发明人： Fumiyoshi Kirino , Nobuyuki Inaba , Teruaki Takeuchi , Kouichirou Wakabayashi
IPC分类号： G11B566
CPC分类号： G11B5/667 , G11B5/72 , G11B5/732 , G11B5/7325 , G11B5/8404 , Y10S428/90 , Y10T428/12465 , Y10T428/12854 , Y10T428/265
摘要： A magnetic recording medium (300) includes a substrate (1) and on the substrate (1) a first underlying layer (32), a second underlying layer (33), a magnetic layer (34), and a protective layer (35). Because of the existence of the first underlying layer (32) of Hf, initial growth layer having no specific crystal structure is prevented from growing in the second underlying layer (33). The second underlying layer (33) has a structure in which CoO particles having a cross section of a regular hexagon and separated by SiO2 portion are arranged in honeycomb. Since magnetic particles are epitaxially grown from CoO particles, the size of the magnetic particles and particle size distribution can be controlled, and the magnetic interaction between magnetic particles can be lessened. The underlying layer (33) and the protective layer (35) are formed by ECR sputtering. Such a magnetic recording medium is free from noise and thermal fluctuation, and ultrahigh recording density over 40 Gbit/inch2 is realized.
摘要翻译：磁记录介质（300）包括基板（1）和基板（1）上的第一下层（32），第二下层（33），磁性层（34）和保护层（35）。由于Hf的第一下层（32）的存在，防止了在第二下层（33）中不具有特定晶体结构的初始生长层。第二基底层（33）具有其中具有正六边形横截面并由SiO 2部分分离的CoO颗粒被布置成蜂巢状的结构。由于磁性颗粒从CoO颗粒外延生长，因此可以控制磁性颗粒的尺寸和颗粒尺寸分布，并且可以减小磁性颗粒之间的磁性相互作用。通过ECR溅射形成下层（33）和保护层（35）。这样的磁记录介质没有噪声和热波动，并且实现超过40Gbit / inch 2的超高记录密度。

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