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88 条记录 (耗时 0.026 秒)

    Magnetic head having track width specified by grooves formed with projection ion beam
    82.
    发明授权
    Magnetic head having track width specified by grooves formed with projection ion beam 失效
    磁头具有由投影离子束形成的槽指定的轨道宽度

    公开(公告)号：US5910871A

    公开(公告)日：1999-06-08

    申请号：US837218

    申请日：1997-04-22

    申请人： Yoshimi Kawanami ,  Hisashi Takano ,  Kaoru Umemura ,  Yuichi Madokoro ,  Satoshi Tomimatsu

    发明人： Yoshimi Kawanami ,  Hisashi Takano ,  Kaoru Umemura ,  Yuichi Madokoro ,  Satoshi Tomimatsu

    IPC分类号： G11B5/187 ,  G11B5/31 ,  G11B5/39 ,  G11B5/40 ,  G11B5/127

    CPC分类号： G11B5/3967 ,  G11B5/1871 ,  G11B5/3106 ,  G11B5/3116 ,  G11B5/3163 ,  G11B5/40 ,  Y10S977/949

    摘要： The track width of a magnetic head is specified by the interval between a pair of grooves in the slider surface that are formed by a projection ion beam. Specifically, the grooves are processed by projecting a mask having the pattern of the pair of grooves with a projection ion beam with reduction to a magnification of 1/10, for example. Although the peripheral strain of the pattern thus formed is large and the current distortion is not uniform when the projection ion beam batch irradiation area is limited, the increase in depth of the grooves formed at the periphery of the grooves does not affect the track narrowing process at the center portion of the projection ion beam since the strain thereof is negligibly small. As a result, a narrow track width is processed with high precision.

    摘要翻译： 磁头的磁道宽度由滑块表面中由突出离子束形成的一对凹槽之间的间隔来确定。 具体地说，例如，通过将具有一对凹槽的图案的掩模用投影离子束投射到+ E，fra 1/10 + EE的放大倍数来进行处理。 虽然如此形成的图案的周边应变大，并且当投影离子束批量照射区域受限时电流变形不均匀，但是形成在凹槽周边的凹槽的深度增加不影响轨道变窄处理 由于其应变可忽略不计，所以在投影离子束的中心部分。 结果，以高精度处理窄轨道宽度。

    Method of head positioning and magnetic recording disk drive using the same
    84.
    发明授权
    Method of head positioning and magnetic recording disk drive using the same 失效
    磁头定位和磁记录磁盘驱动器的使用方法

    公开(公告)号：US5568331A

    公开(公告)日：1996-10-22

    申请号：US603320

    申请日：1990-10-25

    申请人： Kyo Akagi ,  Masaaki Futamoto ,  Fumio Kugiya ,  Yoshinori Miyamura ,  Hisashi Takano ,  Yoshibumi Matsuda ,  Mikio Suzuki ,  Takeshi Nakao ,  Takayuki Munemoto ,  Hirotsugu Fukuoka ,  Makoto Aihara ,  Tokuho Takagaki ,  Hajime Aoi ,  Yosuke Seo

    发明人： Kyo Akagi ,  Masaaki Futamoto ,  Fumio Kugiya ,  Yoshinori Miyamura ,  Hisashi Takano ,  Yoshibumi Matsuda ,  Mikio Suzuki ,  Takeshi Nakao ,  Takayuki Munemoto ,  Hirotsugu Fukuoka ,  Makoto Aihara ,  Tokuho Takagaki ,  Hajime Aoi ,  Yosuke Seo

    IPC分类号： G11B5/584 ,  G11B5/596

    CPC分类号： G11B5/59688 ,  G11B5/584

    摘要： A method and device of head positioning in an information recording/reading device in which a magnetic recording medium with data tracks for recording information thereon is provided and a magnetic head is positioned on the data track to record/read out the information, wherein a data signal is recorded in the data recording layer of said recording medium, a servo signal is recorded in the servo signal recording layer located below said data signal recording layer, said data signal is read out using a data magnetic head whereas said servo signal is read out using a servo magnetic head, and the frequency of said servo signal is within the range of the gap-null frequency of said data magnetic head whereas the frequency of said data signal is within the range of the gap-null frequency of said servo magnetic head, and said magnetic head is positioned on the data track on the basis of said servo signal. A method and device of head positioning in an information recording/reading device in which a magnetic recording medium with data tracks for recording information thereon is provided and a magnetic head is positioned on the data track to record/read out the information, wherein the data tracks are discrete tracks in which adjacent data tracks are separated by a groove located therebetween, a data signal is recorded on the data track of said recording medium, a servo signal is recorded on the servo tracks of grooves between said adjacent data tracks, and said magnetic head is positioned on the data track on the basis of said servo signal.

    摘要翻译： 一种在信息记录/读取装置中头部定位的方法和装置，其中提供具有用于记录信息的数据轨道的磁记录介质，并且磁头位于数据轨道上以记录/读出信息，其中数据 信号被记录在所述记录介质的数据记录层中，伺服信号被记录在位于所述数据信号记录层下方的伺服信号记录层中，所述数据信号使用数据磁头读出，而所述伺服信号被读出 使用伺服磁头，并且所述伺服信号的频率在所述数据磁头的间隙零频率的范围内，而所述数据信号的频率在所述伺服磁头的间隙空位频率的范围内 并且所述磁头基于所述伺服信号位于数据轨道上。 一种在信息记录/读取装置中头部定位的方法和装置，其中提供具有用于记录信息的数据轨道的磁记录介质，并且磁头位于数据轨道上以记录/读出信息，其中数据 轨道是离散轨道，其中相邻数据轨道由位于其间的凹槽分开，数据信号被记录在所述记录介质的数据轨道上，伺服信号被记录在所述相邻数据轨道之间的凹槽的伺服轨道上，并且所述 磁头基于所述伺服信号位于数据轨道上。

    Thin film magnetic head having at least one magnetic core member made at least partly of a material having a high saturation magnetic flux density
    86.
    发明授权
    Thin film magnetic head having at least one magnetic core member made at least partly of a material having a high saturation magnetic flux density 失效
    薄膜磁头具有至少部分地由具有高饱和磁通密度的材料制成的至少一个磁芯构件

    公开(公告)号：US5126907A

    公开(公告)日：1992-06-30

    申请号：US525666

    申请日：1990-05-21

    申请人： Yoshihiro Hamakawa ,  Isamu Yuito ,  Hisashi Takano ,  Naoki Koyama ,  Eijin Moriwaki ,  Shinobu Sasaki ,  Kazuo Shiiki

    发明人： Yoshihiro Hamakawa ,  Isamu Yuito ,  Hisashi Takano ,  Naoki Koyama ,  Eijin Moriwaki ,  Shinobu Sasaki ,  Kazuo Shiiki

    IPC分类号： G11B5/31

    CPC分类号： G11B5/3153 ,  G11B5/3113

    摘要： A thin film magnetic head has a first magnetic core member carried by a substrate, a gap layer formed on the first magnetic core member, and a second magnetic core member formed in a spaced relation with the first magnetic core member. The second magnetic core member is coupled to the first magnetic core member to form a magnetic path and to have an end portion of the gap layer sandwiched by gap defining portions of the first and second magnetic core members. A coil conductor is wound about the magnetic path. In one embodiment, the first magnetic core member includes a first magnetic layer made of a magnetic material having stable magnetic properties during heat treatment and the second magnetic core member includes a second magnetic layer made of a material having a saturation flux density higher than that of the material of the first magnetic core member.

    摘要翻译： 薄膜磁头具有由基板承载的第一磁芯构件，形成在第一磁芯构件上的间隙层和与第一磁芯构件间隔开地形成的第二磁芯构件。 第二磁芯部件耦合到第一磁芯部件以形成磁路，并且间隙层的端部夹在第一和第二磁芯部件的间隙限定部分之间。 线圈导体缠绕在磁路上。 在一个实施例中，第一磁芯构件包括由在热处理期间具有稳定磁特性的磁性材料制成的第一磁性层，第二磁芯构件包括由饱和磁通密度高于 第一磁芯构件的材料。

    Mangeto-resistive type read head
    88.
    发明授权
    Mangeto-resistive type read head 失效
    电阻型读头

    公开(公告)号：US4907114A

    公开(公告)日：1990-03-06

    申请号：US201739

    申请日：1988-06-03

    申请人： Kazuo Shiiki ,  Masahiro Kitada ,  Hideo Tanabe ,  Hitoshi Nakamura ,  Isamu Yuito ,  Hisashi Takano

    发明人： Kazuo Shiiki ,  Masahiro Kitada ,  Hideo Tanabe ,  Hitoshi Nakamura ,  Isamu Yuito ,  Hisashi Takano

    IPC分类号： G11B5/39

    CPC分类号： G11B5/3932 ,  G11B5/3987

    摘要： A magneto-resistive type read head has a substrate, a magnetic film exhibiting a magneto-resistive effect arranged in the widthwise direction of the track of a magnetic writing disk, and lead electrodes for feeding an electric current to the track width portion of the magnetic film for reading the signals written in the magnetic writing disk. The magneto-resistive film extends over a width wider than the track width portion and a soft magnetic thin film is formed over the magneto-resistive film on either side of the track width portion to absorb the domain wall so that the magneto-resistive film takes the single domain structure.

    摘要翻译： 磁阻型读取头具有衬底，在磁性写盘的轨道的宽度方向上布置的磁阻效应的磁性膜和用于将电流馈送到磁性磁道的磁道宽度部分的引线电极 用于读取写入磁性写入盘的信号的胶片。 磁阻薄膜的宽度大于轨道宽度部分的宽度，并且在磁道宽度部分两侧的磁阻膜上方形成软磁性薄膜，以吸收畴壁，使得磁阻薄膜 单域结构。