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    • 8. 发明授权
    • Perpendicular hard disk drive resistive against external magnetic field
    • 垂直硬盘驱动器抵抗外部磁场
    • US07486485B2
    • 2009-02-03
    • US11262531
    • 2005-10-28
    • Takehiko HamaguchiYoshihisa KamoHideaki MaedaYukiya ShimizuIkuya TagawaTetsuo Yuki
    • Takehiko HamaguchiYoshihisa KamoHideaki MaedaYukiya ShimizuIkuya TagawaTetsuo Yuki
    • G11B5/127
    • G11B5/3143G11B5/11G11B5/1278
    • Embodiments of the invention prevent a decrease in magnetization or demagnetization from occurring to recording magnetization regardless of a direction in which a stray field is applied. In one embodiment, an apparatus for data storage system comprises a head having a magnetic field shield in the vicinity of a main pole, and a cover of the device, using a constituent material with a magnetic field shielding effect, across the cover, or at part thereof. When a stray field in a direction perpendicular to a recording medium is applied, the effect of the magnetic field is alleviated by the magnetic field shield installed in the vicinity of the main pole. In such a case, it need only be sufficient to form the magnetic field shield in a shape optimum for removing the stray field in the perpendicular direction only. When a stray field in a direction horizontal in relation to the recording medium is applied, the magnetic field acting on the recording medium is removed by the cover of the device comprising a magnetic component.
    • 本发明的实施例不管施加杂散场的方向如何,都防止磁化或退磁的发生发生到记录磁化。 在一个实施例中,一种用于数据存储系统的装置包括在主极附近具有磁场屏蔽的头部,以及使用具有磁场屏蔽效应的组成材料穿过该盖的装置的盖,或者在 的一部分。 当施加与记录介质垂直的方向上的杂散场时,通过安装在主极附近的磁场屏蔽来减轻磁场的影响。 在这种情况下,只需要使磁场屏蔽形成为仅在垂直方向上去除杂散场的最佳形状。 当施加相对于记录介质的水平方向的杂散场时,作用在记录介质上的磁场被包括磁性部件的装置的盖子去除。