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    Magnetic recording/reproducing head with head elements displaced in both head width and lamination directions
    1.
    发明授权
    Magnetic recording/reproducing head with head elements displaced in both head width and lamination directions 失效
    磁头记录/再现头，其头部元件在头部宽度和层压方向上移位

    公开(公告)号：US07324303B2

    公开(公告)日：2008-01-29

    申请号：US11653806

    申请日：2007-01-16

    申请人： Tadashi Ozue ,  Yutaka Soda

    发明人： Tadashi Ozue ,  Yutaka Soda

    IPC分类号： G11B5/265 ,  G11B5/29 ,  G11B5/31 ,  G11B5/39

    CPC分类号： G11B5/3951 ,  G11B5/115 ,  G11B5/295 ,  G11B5/3103 ,  G11B5/3116 ,  G11B5/3163 ,  G11B5/3903 ,  G11B5/3912 ,  G11B5/3967 ,  G11B5/488 ,  G11B5/4886 ,  G11B5/4893 ,  G11B5/4976 ,  G11B5/531 ,  G11B5/534

    摘要： A magnetic recording/reproducing head having a plurality of magnetic head elements for multi-channeling capable of achieving high density recording/reproducing capability, including: a plurality of magnetic recording/reproducing head layers each including magnetic recording/reproducing head elements fabricated by a thin film process and interposed between two insulating/magnetic shielding layers laminated on a non-magnetic substrate; the total of magnetic recording/reproducing head elements formed therein are displaced from each other in a head width direction, and each magnetic recording/reproducing head layer has a plurality of magnetic recording/reproducing head elements formed at a predetermined pitch.

    摘要翻译： 一种具有多个能够实现高密度记录/再现能力的多通道磁头元件的磁记录/再现头，包括：多个磁记录/再现头层，每个磁记录/再现头层包括由薄的 并且介于层叠在非磁性基板上的两个绝缘/磁屏蔽层之间; 形成在其中的磁记录/再现头元件的总和在磁头宽度方向上彼此偏移，并且每个磁记录/再现磁头层具有以预定间距形成的多个磁记录/再现磁头元件。

    Magnetic recording/reproducing head with head elements displaced in both head width and lamination directions
    2.
    发明申请
    Magnetic recording/reproducing head with head elements displaced in both head width and lamination directions 失效
    磁头记录/再现头，其头部元件在头部宽度和层压方向上移位

    公开(公告)号：US20070109682A1

    公开(公告)日：2007-05-17

    申请号：US11653806

    申请日：2007-01-16

    申请人： Tadashi Ozue ,  Yutaka Soda

    发明人： Tadashi Ozue ,  Yutaka Soda

    IPC分类号： G11B5/127 ,  G11B5/265

    CPC分类号： G11B5/3951 ,  G11B5/115 ,  G11B5/295 ,  G11B5/3103 ,  G11B5/3116 ,  G11B5/3163 ,  G11B5/3903 ,  G11B5/3912 ,  G11B5/3967 ,  G11B5/488 ,  G11B5/4886 ,  G11B5/4893 ,  G11B5/4976 ,  G11B5/531 ,  G11B5/534

    摘要： A magnetic recording/reproducing head having a plurality of magnetic head elements for multi-channeling capable of achieving high density recording/reproducing capability, including: a plurality of magnetic recording/reproducing head layers each including magnetic recording/reproducing head elements fabricated by a thin film process and interposed between two insulating/magnetic shielding layers laminated on a non-magnetic substrate; the total of magnetic recording/reproducing head elements formed therein are displaced from each other in a head width direction, and each magnetic recording/reproducing head layer has a plurality of magnetic recording/reproducing head elements formed at a predetermined pitch.

    摘要翻译： 一种具有多个能够实现高密度记录/再现能力的多通道磁头元件的磁记录/再现头，包括：多个磁记录/再现头层，每个磁记录/再现头层包括由薄的 并且介于层叠在非磁性基板上的两个绝缘/磁屏蔽层之间; 形成在其中的磁记录/再现头元件的总和在磁头宽度方向上彼此偏移，并且每个磁记录/再现磁头层具有以预定间距形成的多个磁记录/再现磁头元件。

    Magnetic recording/reproducing apparatus using a GMR head
    3.
    发明授权
    Magnetic recording/reproducing apparatus using a GMR head 失效
    使用GMR磁头的磁记录/重放装置

    公开(公告)号：US06989974B2

    公开(公告)日：2006-01-24

    申请号：US10735090

    申请日：2003-12-12

    申请人： Hiroki Tetsukawa ,  Yutaka Soda

    发明人： Hiroki Tetsukawa ,  Yutaka Soda

    IPC分类号： G11B5/39

    CPC分类号： B82Y10/00 ,  G11B5/00813 ,  G11B5/0086 ,  G11B5/3106 ,  G11B5/3903 ,  G11B5/40 ,  G11B5/53 ,  G11B5/78 ,  Y10T428/1143 ,  Y10T428/115

    摘要： A highly reliable magnetic recording/reproducing apparatus is provided. In the magnetic recording/reproducing apparatus, a spin-valve film is used as a magnetic sensor element for detecting magnetic signals. By defining the corrosion potential of this spin-valve film, and further by specifying the residual magnetization of a magnetic recording medium used as well as the product of the residual magnetization and the thickness of the magnetic layer to a range that is numerically optimal, the occurrence of corrosion on the surface of a magnetoresistive head that contacts the medium is prevented, and the occurrence of electromagnetic discharge is avoided. Further, by numerically specifying the surface resistivity of the metal magnetic thin film of the magnetic recording medium, as well as the roughness of the surface on which the metal magnetic thin film is formed, electrostatic discharge preventing effects and wear resistance are improved.

    摘要翻译： 提供了高度可靠的磁记录/重放装置。 在磁记录/再现装置中，使用自旋阀膜作为用于检测磁信号的磁传感元件。 通过限定该自旋阀膜的腐蚀电位，并且通过将所使用的磁记录介质的剩余磁化强度以及磁性层的剩余磁化强度和厚度的乘积确定为数值最佳的范围， 防止了与介质接触的磁阻头的表面发生腐蚀，避免了电磁放电的发生。 此外，通过数字地确定磁记录介质的金属磁性薄膜的表面电阻率以及形成金属磁性薄膜的表面的粗糙度，提高了防静电效果和耐磨性。

    Magnetic recording and playback device with ESD protection
    6.
    发明授权
    Magnetic recording and playback device with ESD protection 失效
    具有ESD保护功能的磁记录和播放装置

    公开(公告)号：US06704174B2

    公开(公告)日：2004-03-09

    申请号：US10013859

    申请日：2001-12-13

    申请人： Yutaka Soda ,  Nobuyuki Nagai ,  Katsuhiro Kasuga ,  Hiroshi Meguro ,  Tadashi Ozue

    发明人： Yutaka Soda ,  Nobuyuki Nagai ,  Katsuhiro Kasuga ,  Hiroshi Meguro ,  Tadashi Ozue

    IPC分类号： G11B539

    CPC分类号： G11B33/1493

    摘要： A head substrate and a projection substrate of a head drum comprise a conductive material having a resistance of 1×1010&OHgr; or less and are connected to a metal base so as to be at the ground potential via the metal base and a rotating drum. These antistatic treatments allow static electricity charged on a magnetic tape to be discharged to the head substrate and the protection substrate without flowing to a magneto-resistive (MR) element, thereby preventing the electrostatic discharge breakdown of the MR element.

    摘要翻译： 磁头基板和磁头鼓的投影基板包括具有1×10 10Ω或更小的电阻的导电材料，并且通过金属底座和旋转滚筒连接到金属基底以便处于地电位。 这些抗静电处理允许在磁带上充电的静电被排放到头基板和保护基板，而不流到磁阻（MR）元件，从而防止MR元件的静电放电击穿。

    Flux cancelling yoke type magnetic transducer head
    7.
    发明授权
    Flux cancelling yoke type magnetic transducer head 失效
    磁通消除轭型磁换能器头

    公开(公告)号：US4734644A

    公开(公告)日：1988-03-29

    申请号：US841259

    申请日：1986-03-19

    申请人： Shigeyoshi Imakoshi ,  Hideo Suyama ,  Yutaka Soda ,  Munekatsu Fukuyama

    发明人： Shigeyoshi Imakoshi ,  Hideo Suyama ,  Yutaka Soda ,  Munekatsu Fukuyama

    IPC分类号： G01D5/14 ,  G01D5/16 ,  G11B5/39 ,  G01R33/02 ,  H01L43/00

    CPC分类号： G01D5/142 ,  G11B5/3903

    摘要： A yoke type magnetic transducer head utilizing a magnetoresistance effect in which a magnetoresistance effect sensing portion is provided so as to magnetically couple a cut-away portion in a magnetic circuit including an operation gap and a magnetic yoke having in its one portion the cut-away portion and in which a first bias magnetic field is applied to the magnetoresistance effect sensing portion by a first magnetic flux that is generated when a current is flowed through the magnetoresistance effect sensing portion, or when a current is flowed through both the magnetoresistance effect sensing portion and a bias conductor, which includes a hard magnetic layer for generating a second magnetic flux by which a second bias magnetic field is applied to the magnetoresistance effect sensing portion and for passing through the magnetic yoke a magnetic flux which cancels at least a part of the first magnetic flux which passes through the magnetic yoke.

    摘要翻译： 一种利用磁阻效应的磁轭型磁换能器头，其中磁阻效应感测部分被设置为磁耦合包括操作间隙的磁路中的切除部分和在其一部分中被切除的磁轭 并且其中通过在电流流过磁阻效应感测部分时产生的第一磁通量或当电流流过磁阻效应感测部分两者时，第一偏置磁场施加到磁阻效应感测部分 以及偏置导体，其包括用于产生第二磁通量的硬磁性层，通过该硬磁性层将第二偏置磁场施加到磁阻效应感测部分，并且通过磁轭，磁通量抵消了至少一部分 第一磁通量通过磁轭。

    Magneto-resistance effect type magnetic head and magnetic tape apparatus
    9.
    发明授权
    Magneto-resistance effect type magnetic head and magnetic tape apparatus 有权
    磁阻效应型磁头和磁带装置

    公开(公告)号：US07525774B2

    公开(公告)日：2009-04-28

    申请号：US11229074

    申请日：2005-09-19

    申请人： Yutaka Soda ,  Masaaki Sekine

    发明人： Yutaka Soda ,  Masaaki Sekine

    IPC分类号： G11B5/33 ,  G11B5/127

    CPC分类号： G11B5/534 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/0086 ,  G11B5/3903 ,  G11B2005/3996

    摘要： A laser diode capable of being easily mounted and a laser diode device in which the laser diode is mounted are provided. A hole is disposed in a semiconductor layer, and a p-type electrode and an n-type semiconductor layer are electrically connected to each other by a bottom portion (a connecting portion) of the hole. Thereby, the p-type electrode has the same potential as the n-type semiconductor layer, and a saturable absorption region is formed in a region corresponding to a current path. Light generated in a gain region (not shown) is absorbed in the saturable absorption region so as to be converted into a current. The current is discharged to a ground via the p-side electrode and the bottom portion, an interaction between the saturable absorption region and the gain region is initiated, and thereby self-oscillation can be produced.

    摘要翻译： 提供能够容易地安装的激光二极管和安装有激光二极管的激光二极管装置。 在半导体层中设置有空穴，p型电极和n型半导体层通过孔的底部（连接部）彼此电连接。 因此，p型电极具有与n型半导体层相同的电位，并且在对应于电流路径的区域中形成可饱和吸收区域。 在增益区域（未示出）中产生的光在可饱和吸收区域中被吸收，以便转换成电流。 电流通过p侧电极和底部放电到地，可饱和吸收区域和增益区域之间的相互作用开始，从而可以产生自振荡。

    Magneto-resistance effect type magnetic head and magnetic tape apparatus
    10.
    发明申请
    Magneto-resistance effect type magnetic head and magnetic tape apparatus 有权
    磁阻效应型磁头和磁带装置

    公开(公告)号：US20060067011A1

    公开(公告)日：2006-03-30

    申请号：US11229074

    申请日：2005-09-19

    申请人： Yutaka Soda ,  Masaaki Sekine

    发明人： Yutaka Soda ,  Masaaki Sekine

    IPC分类号： G11B5/127 ,  G11B5/33

    CPC分类号： G11B5/534 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/0086 ,  G11B5/3903 ,  G11B2005/3996

    摘要： A magneto-resistance effect type magnetic head is disclosed which is high in sensitivity and corrosion resistance. In the head, a spin valve film acting as an magnetic sensing device for detecting a magnetic signal on a magnetic recording medium. The spin valve film is structured such that an antiferromagnetic layer, a fixed magnetization layer whose magnetization direction is fixed by an exchange coupling magnetic field acting between the layers, a free magnetization layer whose magnetization direction varies in response to an external magnetic field, and a nonmagnetic layer for magnetically isolating the fixed magnetization layer and the free magnetization layer are laminated. The nonmagnetic layer is formed from a conductive layer, an interface layer formed on an interface between the fixed magnetization layer and conductive layer, and a second interface layer formed on an interface between the conductive layer and free magnetization layer.

    摘要翻译： 公开了一种具有高灵敏度和耐腐蚀性的磁阻效应型磁头。 在磁头中，作为用于检测磁记录介质上的磁信号的磁感测装置的自旋阀膜。 自旋阀膜被构造成使得反铁磁层，其磁化方向由层之间的交换耦合磁场固定的固定磁化层，其磁化方向响应于外部磁场而变化的自由磁化层和 层叠用于磁性隔离固定磁化层和自由磁化层的非磁性层。 非磁性层由导电层，形成在固定磁化层和导电层之间的界面上的界面层和形成在导电层和自由磁化层之间的界面上的第二界面层形成。