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    Magnetic recording/reproducing head with head elements displaced in both head width and lamination directions
    21.
    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
    22.
    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
    25.
    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
    26.
    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。

    Magnetic reproducing head having a structure to inhibit electrostatic discharge damage to a recording tape
    28.
    发明授权
    Magnetic reproducing head having a structure to inhibit electrostatic discharge damage to a recording tape 失效
    具有抑制对记录带的静电放电损坏的结构的磁性再现头

    公开(公告)号：US07009819B2

    公开(公告)日：2006-03-07

    申请号：US10267275

    申请日：2002-10-09

    申请人： Yutaka Soda ,  Yoshimi Takahashi ,  Susumu Sato ,  Seiji Onoe

    发明人： Yutaka Soda ,  Yoshimi Takahashi ,  Susumu Sato ,  Seiji Onoe

    IPC分类号： G11B5/39

    CPC分类号： G11B5/10 ,  G11B5/3903 ,  G11B5/40 ,  G11B5/53

    摘要： A head substrate and a protective substrate are formed of an electrostatic-discharge resistant conductive material having an electrical resistivity of 102 to 1010 Ωcm. These substrates are electrically connected to a base metal through the use of conductive paste and are set to a ground potential via the base metal and a rotating drum. This suppresses a discharge current flowing through an MR element when an electrostatically charged substance touches or approaches a magnetic reproducing head, a terminal, a conducting wire, etc. to generate an electrostatic discharge. The magnetic reproducing head including an MR element and the like is prevented against an electrostatic discharge damage. It is possible to provide the magnetic reproducing head, a head drum apparatus, and a magnetic recording-reproducing apparatus which can highly effectively prevent an electrostatic discharge damage.

    摘要翻译： 头基板和保护基板由电阻率为10〜10Ω·cm的静电电阻导电材料形成。 这些基板通过使用导电膏电连接到基体金属，并且通过基底金属和旋转鼓被设置为接地电位。 当静电充电物质接触或接近磁性再现头，端子，导线等产生静电放电时，这抑制流过MR元件的放电电流。 包括MR元件等的磁性再现头被防止静电放电损坏。 可以提供可以高度有效地防止静电放电损坏的磁性再现头，磁头鼓装置和磁记录重放装置。

    Magnetic reproducing head having a structure to inhibit electrostatic discharge to a recording tape
    29.
    发明授权
    Magnetic reproducing head having a structure to inhibit electrostatic discharge to a recording tape 失效
    具有抑制对记录带的静电放电的结构的磁性再现头

    公开(公告)号：US06985336B2

    公开(公告)日：2006-01-10

    申请号：US11117207

    申请日：2005-04-28

    申请人： Yutaka Soda ,  Yoshimi Takahashi ,  Susumu Sato ,  Seiji Onoe

    发明人： Yutaka Soda ,  Yoshimi Takahashi ,  Susumu Sato ,  Seiji Onoe

    IPC分类号： G11B5/39

    CPC分类号： G11B5/10 ,  G11B5/3903 ,  G11B5/40 ,  G11B5/53

    摘要： A head substrate and a protective substrate are formed of an electrostatic-discharge resistant conductive material having an electrical resistivity of 102 to 1010 Ωcm. These substrates are electrically connected to a base metal through the use of conductive paste and are set to a ground potential via the base metal and a rotating drum. This suppresses a discharge current flowing through an MR element when an electrostatically charged substance touches or approaches a magnetic reproducing head, a terminal, a conducting wire, etc. to generate an electrostatic discharge. The magnetic reproducing head including an MR element and the like is prevented against an electrostatic discharge damage. It is possible to provide the magnetic reproducing head, a head drum apparatus, and a magnetic recording-reproducing apparatus which can highly effectively prevent an electrostatic discharge damage.

    摘要翻译： 头基板和保护基板由电阻率为10〜10Ω·cm的静电电阻导电材料形成。 这些基板通过使用导电膏电连接到基体金属，并且通过基底金属和旋转鼓被设置为接地电位。 当静电充电物质接触或接近磁性再现头，端子，导线等产生静电放电时，这抑制流过MR元件的放电电流。 包括MR元件等的磁性再现头被防止静电放电损坏。 可以提供可以高度有效地防止静电放电损坏的磁性再现头，磁头鼓装置和磁记录重放装置。

    Head assembly capable of reading floppy discs of varying densities and floppy-disc drive incorporating the same
    30.
    发明授权
    Head assembly capable of reading floppy discs of varying densities and floppy-disc drive incorporating the same 失效
    头组件能够读取不同密度的软盘和包含其的软盘驱动器

    公开(公告)号：US06646833B1

    公开(公告)日：2003-11-11

    申请号：US09407170

    申请日：1999-09-28

    申请人： Fujio Kanai ,  Koji Takahashi ,  Hitoshi Saito ,  Yutaka Soda

    发明人： Fujio Kanai ,  Koji Takahashi ,  Hitoshi Saito ,  Yutaka Soda

    IPC分类号： G11B2116

    CPC分类号： G11B5/4813

    摘要： A magnetic head device in which magnetic head elements can follow the signal recording surface of the first or second magnetic disc 6, 23. To this end, the magnetic head device includes a head unit 121 for recording/reproducing information signals for the first or second magnetic disc 6, 23, and a supporting arm 122 having a first portion 131 for supporting said head portion, a second portion 132 mounted on a supporting arm holding portion and a third portion 133 interconnecting said first and second portions 131 and 132. The first to third portions 131 to 133 of the supporting arm 122 are of different shapes so as to have different physical properties to follow the first or second magnetic disc 6, 23 under a desired condition.

    摘要翻译： 一种磁头装置，其中磁头元件可以跟随第一或第二磁盘6,23的信号记录表面。为此，磁头装置包括用于记录/再现第一或第二磁盘6,23的信息信号的磁头单元121 磁盘6,23和支撑臂122，其具有用于支撑头部的第一部分131，安装在支撑臂保持部分上的第二部分132和互连所述第一和第二部分131和132的第三部分133。 支撑臂122的第三部分131至133具有不同的形状，以便在期望的条件下具有跟随第一或第二磁盘6,23的不同的物理特性。