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19 条记录 (耗时 0.026 秒)

    Lamination type magneto-resistive head
    3.
    发明授权
    Lamination type magneto-resistive head 失效
    层压型磁阻头

    公开(公告)号：US5335127A

    公开(公告)日：1994-08-02

    申请号：US902580

    申请日：1992-06-22

    申请人： Yuji Nagata ,  Toshio Fukazawa ,  Satoru Mitani

    发明人： Yuji Nagata ,  Toshio Fukazawa ,  Satoru Mitani

    IPC分类号： G11B5/127 ,  G11B5/39 ,  G11B5/48

    CPC分类号： G11B5/3925 ,  G11B5/3951 ,  G11B5/3977 ,  G11B5/4893

    摘要： A lamination type magneto-resistive head used for a magnetic reproducing apparatus is formed by laminating two magneto-resistive heads, at least with the position of two magneto-resistive elements substantially shifted from each other for lamination and also enabling a plurality of track formats to be conformed, thus making it possible to assure stable outputs at a low frequency range.

    摘要翻译： 用于磁再现装置的层叠型磁阻头通过层叠两个磁阻头而形成，至少两个磁阻元件的位置彼此基本上相互偏移以进行层压，并且还使得多个磁道格式能够 因此可以在低频范围内确保稳定的输出。

    Thin-film magnetic head device for recording and reproducing
    4.
    发明授权
    Thin-film magnetic head device for recording and reproducing 失效
    用于记录和再现的薄膜磁头装置

    公开(公告)号：US5025342A

    公开(公告)日：1991-06-18

    申请号：US567812

    申请日：1990-08-15

    申请人： Yuji Nagata ,  Toshio Fukazawa

    发明人： Yuji Nagata ,  Toshio Fukazawa

    IPC分类号： G11B5/245 ,  G11B5/31 ,  G11B5/39

    CPC分类号： G11B5/3903 ,  G11B5/2452 ,  G11B5/3116 ,  G11B5/3967

    摘要： A magnetic head device of thin-film type having superior recording and reproducing characterisics. The magnetic head device has a non-magnetic substrate and lower and upper magnetic layers formed on the substrate. At least one of the magnetic layers has a double-layered structure composed of two soft magnetic layers. One of these soft magnetic layers, which is disposed at the inner side of the magnetic circuit, has a coercive force smaller than that of the other soft magnetic layer. The soft magnetic layer having the greater coercive force, at least at a portion thereof contactable with the recording medium, has a greater width than the soft magnetic layer of the smaller coercive force as viewed in the direction of the track.

    Thin film magnetoresistive head for magnetic recording and reproducing apparatus
    5.
    发明授权
    Thin film magnetoresistive head for magnetic recording and reproducing apparatus 失效
    用于磁记录和再现装置的薄膜磁阻头

    公开(公告)号：US5469317A

    公开(公告)日：1995-11-21

    申请号：US255802

    申请日：1994-06-07

    申请人： Yuji Nagata ,  Toshio Fukazawa ,  Kumiko Wada ,  Yoshihiro Tosaki

    发明人： Yuji Nagata ,  Toshio Fukazawa ,  Kumiko Wada ,  Yoshihiro Tosaki

    IPC分类号： G11B5/29 ,  G11B5/39 ,  G11B5/127

    CPC分类号： G11B5/3925 ,  G11B5/3961 ,  G11B5/295

    摘要： In a magnetoresistive head capable of performing favorable magnetic recording and reproduction, an overlap width of a front yoke and a magnetoresistive element is always wider than an overlap width of a back yoke and the magnetoresistive element. Generally, the magnetoresistive head varies in its reproduction efficiency by the overlap width of the yoke and magnetoresistive element. In particular, the reproduction output is significantly affected by the overlap width of the front yoke and magnetoresistive element, and when the overlap width of the front yoke becomes narrower than the overlap width of the back yoke, the reproduction output tends to decrease abruptly. Therefore, by keeping the overlap width of the front yoke always wider than the other, a stable reproduction output can be achieved. In particular, an outstanding effect is obtained in a multi-channel magnetoresistive head containing multiple magnetoresistive elements in one head.

    摘要翻译： 在能够进行有利的磁记录和再现的磁阻头中，前磁轭和磁阻元件的重叠宽度总是比后磁轭和磁阻元件的重叠宽度宽。 通常磁阻磁头通过磁轭和磁阻元件的重叠宽度在其再现效率上变化。 特别地，再现输出受到前磁轭和磁阻元件的重叠宽度的显着影响，并且当前磁轭的重叠宽度变得比背轭的重叠宽度窄时，再现输出趋于急剧下降。 因此，通过保持前轭的重叠宽度总是比另一方宽，可以实现稳定的再现输出。 特别地，在包含一个磁头中的多个磁阻元件的多通道磁阻磁头中获得了显着的效果。

    Method for manufacturing thin film head
    7.
    发明授权
    Method for manufacturing thin film head 有权
    薄膜头制造方法

    公开(公告)号：US07137192B2

    公开(公告)日：2006-11-21

    申请号：US10640068

    申请日：2003-08-13

    申请人： Masaya Sakaguchi ,  Toshio Fukazawa

    发明人： Masaya Sakaguchi ,  Toshio Fukazawa

    IPC分类号： G11B5/127 ,  H04R31/00

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3106 ,  G11B5/3163 ,  G11B5/3903 ,  G11B5/3912 ,  G11B5/3932 ,  G11B5/40 ,  G11B2005/3996 ,  Y10T29/49032 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49067 ,  Y10T428/1143 ,  Y10T428/1164

    摘要： A thin film head comprising a GMR element formed of an antiferromagnetic layer, a pinning layer, a nonmagnetic conductive layer and a free magnetic layer; and a pair of the right and the left laminated longitudinal biasing layers, each of the layers containing a hard magnetic layer, a nonmagnetic layer and a soft magnetic layer provided on said free magnetic layer of GMR element. Said hard magnetic layer and said soft magnetic layer are antiferromagnetically exchange-coupled via said nonmagnetic layer, and said hard magnetic layer and said free magnetic layer locating next to said hard magnetic layer are ferromagnetically coupled. The present invention contains also a method for manufacturing the thin film head.

    摘要翻译： 一种薄膜头，包括由反铁磁层，钉扎层，非磁性导电层和自由磁性层形成的GMR元件; 以及一对左右的层叠纵向偏置层，每个层包含设置在所述GMR元件的自由磁性层上的硬磁性层，非磁性层和软磁性层。 所述硬磁性层和所述软磁性层经由所述非磁性层进行反铁磁交换耦合，并且位于所述硬磁性层旁边的所述硬磁性层和所述自由磁性层被铁磁耦合。 本发明还包括制造薄膜头的方法。

    Method for manufacturing multiturn thin film coil
    8.
    发明授权
    Method for manufacturing multiturn thin film coil 失效
    制造多圈薄膜线圈的方法

    公开(公告)号：US5022141A

    公开(公告)日：1991-06-11

    申请号：US539738

    申请日：1990-06-18

    申请人： Yuji Nagata ,  Toshio Fukazawa ,  Kumiko Wada ,  Yoshihiro Tosaki

    发明人： Yuji Nagata ,  Toshio Fukazawa ,  Kumiko Wada ,  Yoshihiro Tosaki

    IPC分类号： G11B5/31 ,  H01F41/04

    CPC分类号： H01F41/041 ,  G11B5/3163 ,  Y10T29/49062 ,  Y10T29/49064

    摘要： A method of manufacturing a multiturn coil and a thin film magnetic head including a multiturn coil.This multiturn coil manufacturing method includes the following steps. First a laminate made up of conducting layers and insulating layers for coil is formed on a base member on a substrate and having a given inclination. Then this laminate is formed into a loop shape with a space or discontinuity thereon. In the next step, the upper part of the laminate on opposite sides of the space is removed to form a flat surface parallel to the substrate in which the ends of all the conducting layers are exposed. Finally, film conductive strips are connected between these exposed portions across the discontinuity to complete a multiturn coil.

    Method for manufacturing a thin film head
    10.
    发明授权
    Method for manufacturing a thin film head 有权
    薄膜头制造方法

    公开(公告)号：US07103962B2

    公开(公告)日：2006-09-12

    申请号：US10413735

    申请日：2003-04-15

    申请人： Masaya Sakaguci ,  Toshio Fukazawa

    发明人： Masaya Sakaguci ,  Toshio Fukazawa

    IPC分类号： G11B5/127 ,  H04R31/00

    CPC分类号： G11B5/3932 ,  G11B5/3903 ,  G11B2005/0016 ,  Y10T29/49032 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49067 ,  Y10T29/49155

    摘要： A magnetoresistive thin film head comprises a magnetoresistive element including an antiferromagnetic layer, a pinned layer, a nonmagnetic conductive layer and a free magnetic layer, and a pair of the right and the left laminated transverse biasing layers, each including a nonmagnetic layer, a ferromagnetic layer and an antiferromagnetic layer, provided on the free magnetic layer constituting said magnetoresistive element. The layer thickness of said nonmagnetic layer has been established to a certain specific value so that magnetizing direction in said free magnetic layer opposing to the ferromagnetic layer via said nonmagnetic layer assumes a direction that is opposite to that of said ferromagnetic layer.

    摘要翻译： 磁阻薄膜头包括包含反铁磁层，钉扎层，非磁性导电层和自由磁性层的磁阻元件，以及一对左右层压横向偏置层，每个包括非磁性层，铁磁性层 层和反铁磁层，设置在构成所述磁阻元件的自由磁性层上。 已经建立了所述非磁性层的层厚度到一定的特定值，使得通过所述非磁性层与所述铁磁层相对的所述自由磁性层中的磁化方向呈现与所述铁磁性层相反的方向。