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    • 22. 发明授权
    • Magnetic disk apparatus
    • 磁盘装置
    • US06757131B1
    • 2004-06-29
    • US09676855
    • 2000-09-29
    • Hiroyuki IwaharaYasuhiro MiuraMitsuhiro Izumi
    • Hiroyuki IwaharaYasuhiro MiuraMitsuhiro Izumi
    • G11B1702
    • G11B25/043G11B17/038G11B33/08
    • For a magnetic disk apparatus for reading and writing information to a magnetic disk in the present invention, the recessed portion of the cover of the magnetic disk apparatus has a two-level structure; the space between the inner surface of the recessed portion, corresponding to the region of the magnetic disk surface which the actuator arm does not traverse, and the surface of the magnetic disk is made as narrow as possible. The air flow generated in that space by the rotation of the magnetic disk is thereby suppressed and as a result, magnetic disk resonance is suppressed. Also, the noise level is further suppressed by having two layers of damping plates attached to the outer surface of the cover.
    • 对于本发明的磁盘读取和写入磁盘的磁盘装置,磁盘装置的盖的凹部具有两层结构; 使凹部的内表面与致动器臂不穿过的磁盘表面的区域相对应的空间与磁盘的表面尽可能的窄。 因此,通过磁盘的旋转而在该空间中产生的空气流被抑制,结果,磁盘谐振被抑制。 此外,通过将两层阻尼板附接到盖的外表面来进一步抑制噪声水平。