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60 条记录 (耗时 0.043 秒)

    Disk drive unit having multiple disks arranged in a plane
    3.
    发明授权
    Disk drive unit having multiple disks arranged in a plane 失效
    磁盘驱动器单元具有布置在平面中的多个磁盘

    公开(公告)号：US06483660B1

    公开(公告)日：2002-11-19

    申请号：US08992083

    申请日：1997-12-17

    申请人： Kyo Akagi ,  Toshihisa Tsukada ,  Yoshihiro Shiroishi

    发明人： Kyo Akagi ,  Toshihisa Tsukada ,  Yoshihiro Shiroishi

    IPC分类号： G11B554

    CPC分类号： G11B25/043

    摘要： A magnetic disk unit of form factor size with a low power consumption, a short average seek time and a high performance. The unit includes at least two spindles for supporting and rotating magnetic disks. Specifically, two 1.3-inch disks, three 1.0-inch disks or four 0.7-inch disks are arranged in a housing originally intended for a 1.8-inch magnetic disk. The unit further includes a device for writing and reading information while selecting a spindle. The card-type disk unit thus can be reduced in thickness, with a smaller power consumption for starting the disk rotation and further with an improved average seek velocity.

    摘要翻译： 具有功耗低，平均寻道时间短，性能好的外形尺寸的磁盘单元。 该单元包括用于支撑和旋转磁盘的至少两个主轴。 具体来说，两个1.3英寸磁盘，三个1.0英寸磁盘或四个0.7英寸磁盘布置在原来用于1.8英寸磁盘的外壳中。 该单元还包括用于在选择主轴时写入和读取信息的装置。 因此，卡型盘单元的厚度可以减小，具有较小的功率消耗用于启动盘旋转，并且还具有改进的平均寻道速度。

    Magnetic recording and reading device
    5.
    发明授权
    Magnetic recording and reading device 有权
    磁记录读取装置

    公开(公告)号：US07903374B2

    公开(公告)日：2011-03-08

    申请号：US12816093

    申请日：2010-06-15

    申请人： Yoshihiro Shiroishi

    发明人： Yoshihiro Shiroishi

    IPC分类号： G11B5/147

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/00 ,  G11B5/09 ,  G11B5/313 ,  G11B5/3909 ,  G11B5/3967 ,  G11B5/484 ,  G11B5/656 ,  G11B5/66 ,  G11B5/7325 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/3996

    摘要： A magnetic recording and reading device includes a perpendicular magnetic recording medium, a perpendicular magnetic head having a recording head width having a heat-generating portion and a reading head, a fine adjustment portion, and a R/W-IC. The perpendicular magnetic head is configured to perform magnetic recording on the recording medium while locally heating the recording medium so as to enable a change of the coercive force of the recording medium during the recording after correcting of the position of the perpendicular magnetic head by the fine adjustment portion is completed, and to perform reading of the magnetic recording information with the aid of the reading head after correcting of the position of the perpendicular magnetic head by the fine adjustment portion is completed.

    摘要翻译： 磁记录和读取装置包括垂直磁记录介质，具有发热部分和读头的记录头宽度的垂直磁头，微调部分和R / W-IC。 垂直磁头被配置为在记录介质上执行磁记录，同时局部加热记录介质，以便在校正垂直磁头的位置之后能够在记录期间改变记录介质的矫顽力 调整部分完成，并且在通过微调部分校正垂直磁头的位置之后，借助于读取头来执行磁记录信息的读取。

    Magnetic recording medium, process for producing the same and magnetic recording system
    6.
    发明授权
    Magnetic recording medium, process for producing the same and magnetic recording system 失效
    磁记录介质，制造过程及磁记录系统

    公开(公告)号：US5815343A

    公开(公告)日：1998-09-29

    申请号：US967346

    申请日：1997-10-27

    申请人： Akira Ishikawa ,  Yoshihiro Shiroishi ,  Yuzuru Hosoe ,  Yotsuo Yahisa ,  Tomoo Yamamoto ,  Masukazu Igarashi ,  Akira Osaki ,  Yoshiki Kato ,  Jun Fumioka

    发明人： Akira Ishikawa ,  Yoshihiro Shiroishi ,  Yuzuru Hosoe ,  Yotsuo Yahisa ,  Tomoo Yamamoto ,  Masukazu Igarashi ,  Akira Osaki ,  Yoshiki Kato ,  Jun Fumioka

    IPC分类号： G11B5/012 ,  G11B5/39 ,  G11B5/62 ,  G11B5/64 ,  G11B5/66 ,  G11B5/73 ,  G11B5/84 ,  G11B5/78 ,  G11B5/82 ,  G11B17/00

    CPC分类号： G11B5/012 ,  G11B5/39 ,  G11B5/64 ,  G11B5/656 ,  G11B5/66 ,  G11B5/7315 ,  G11B5/7325 ,  G11B5/8404

    摘要： A magnetic recording medium includes a non-magnetic substrate, and a magnetic layer provided on the non-magnetic substrate. The value of the product Br.sub.1 .delta. of the residual flux density Br.sub.1 of the magnetic layer determined in a recording direction and the thickness .delta. of the magnetic layer is not less than 5 G.mu.m and not more than 180 G.mu.m; the value of the ratio of Br.sub.1 to the residual flux density Br.sub.2 determined in a direction parallel to the substrate plane and perpendicular to the recording direction, Br.sub.1 /Br.sub.2, is not less than 1.3 and not more than 3; the surface of the non-magnetic substrate has texture grooves therein extending predominantly in the recording direction; and the average roughness factor Ra of the surface of the magnetic layer determined in a direction perpendicular to the substrate plane and perpendicular to the recording direction is not less than 0.3 nm and not more than 1.9 nm. Alternatively, the value of the product Br.delta. of the residual flux density Br of the magnetic layer determined in the recording direction and the thickness .delta. of the magnetic layer is not less than 5 G.mu.m and not more than 80 G.mu.m; and the value of the anisotropic magnetic field H.sub.k of the magnetic recording medium is not less than 7 kOe and not more than 20 kOe.

    摘要翻译： 磁记录介质包括非磁性衬底和设置在非磁性衬底上的磁性层。 在记录方向上确定的磁性层的剩余磁通密度Br1和磁性层的厚度δ的乘积Br1δ的值不小于5Gm且不大于180Gm; 在平行于基板平面并垂直于记录方向Br1 / Br2的方向上确定的Br1与剩余通量密度Br2的比值不小于1.3且不大于3; 非磁性基板的表面具有主要在记录方向上延伸的织构槽; 并且在垂直于基板平面并垂直于记录方向的方向上确定的磁性层的表面的平均粗糙度Ra不小于0.3nm且不大于1.9nm。 或者，在记录方向上确定的磁性层的剩余磁通密度Br和磁性层的厚度δ的乘积Br delta的值不小于5Gm且不大于80Gm; 并且磁记录介质的各向异性磁场Hk的值不小于7kOe且不大于20kOe。

    Thin-film magnetic head
    9.
    发明授权
    Thin-film magnetic head 失效
    薄膜磁头

    公开(公告)号：US4651248A

    公开(公告)日：1987-03-17

    申请号：US500907

    申请日：1983-06-03

    申请人： Kazuo Shiiki ,  Yoshihiro Shiroishi ,  Isamu Yuito ,  Kiminari Shinagawa ,  Hideo Fujiwara

    发明人： Kazuo Shiiki ,  Yoshihiro Shiroishi ,  Isamu Yuito ,  Kiminari Shinagawa ,  Hideo Fujiwara

    IPC分类号： G11B5/127 ,  G11B5/17 ,  G11B5/31 ,  G11B5/23 ,  G11B5/147 ,  G11B5/187

    CPC分类号： G11B5/3143 ,  G11B5/1278 ,  G11B5/31

    摘要： A thin-film magnetic head which has a structure wherein a spiral conductor coil having a plurality of turns is disposed between first and second magnetic layers being substantially in parallel with each other, through upper and lower inorganic insulator layers, and in which a part of the outermost turn of the conductor coil is exposed on a face opposite a magnetic recording medium along with the upper and lower inorganic insulator layers, to form a magnetic gap. This head can be readily manufactured by a manufacturing method including the step of forming the outermost turn of the conductor coil on the side of the face opposite the magnetic recording medium so as to be wider than any other part of the conductor coil, and the step of thereafter machining the face opposite the magnetic recording medium so as to expose the outermost turn of the conductor coil on the face opposite the magnetic recording medium. The magnetic head of the present invention is suited to high-density recording, and is high in recording and reproducing efficiencies and also in reliability.

    摘要翻译： 具有以下结构的薄膜磁头：其中具有多个匝的螺旋导体线圈通过上下无机绝缘体层彼此基本上彼此平行地设置在第一和第二磁性层之间，并且其中一部分 导体线圈的最外圈与上下无机绝缘体层一起在与磁记录介质相对的面上露出，形成磁隙。 该头可以容易地通过制造方法制造，该方法包括以下步骤：在与磁记录介质相对的面的一侧形成导体线圈的最外圈，以便比导体线圈的任何其它部分宽，并且步骤 之后加工与磁记录介质相对的面，以便暴露在与磁记录介质相对的表面上的导体线圈的最外圈。 本发明的磁头适用于高密度记录，记录和再现效率高，可靠性高。