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    • 3. 发明专利
    • Head slider and magnetic disk unit equipped therewith
    • 头滑块和磁性盘装置
    • JP2005038522A
    • 2005-02-10
    • JP2003274978
    • 2003-07-15
    • Fujitsu Ltd富士通株式会社
    • KUBODERA HIROYUKI
    • G11B5/60G11B15/64G11B21/21
    • G11B5/6005
    • PROBLEM TO BE SOLVED: To provide a head slider or the like which is free of any restriction on a groove depth, can optimize a floating fluctuation and can appropriately suppress the degradation in a flying height due to the drop of atmospheric pressure without entailing a cost increase.
      SOLUTION: The head slider 1 has an inflow end, an outflow end, an inflow end side rail 11, a negative pressure section 10, three extended rails 13, a pair of side rails 14, an inflow end side positive pressure section 12, an outflow end side positive pressure section 16, and an outflow end side rail 17. The extended rails 13 are formed projectingly from the negative pressure section 20, lower than the inflow end side positive pressure section 12. Positive pressure (buoyancy) is imparted to the inflow end side positive pressure section 12 and negative pressure is imparted to the negative pressure section 10. The negative pressure to negate the positive pressure acts moderately on the positive pressure without being affected by a change in the atmospheric pressure, as a result of which the flying height is controlled constant regardless of the change in the altitude (the atmospheric pressure).
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了提供对凹槽深度没有任何限制的头滑块等,可以优化浮动波动,并且可以适当地抑制由于大气压下降而导致的飞行高度的退化,而没有 需要增加成本。 解决方案:头滑块1具有流入端,流出端,流入端侧导轨11,负压部10,三个延伸轨道13,一对侧轨14,流入端侧正压部 12,流出端侧正压部16和流出端侧导轨17.延伸导轨13从负压部20突出形成,比流入端侧正压部12低。正压(浮力)为 赋予流入端侧正压部12,将负压赋予负压部10.负压正负压在正压下适度作用而不受大气压的变化的影响,结果 无论海拔高度(大气压)如何变化,飞行高度均可控制。 版权所有(C)2005,JPO&NCIPI
    • 7. 发明专利
    • FLOATING PHENOMENON ANALYZER AND MAGNETIC RECORDER
    • JPH0660502A
    • 1994-03-04
    • JP20928192
    • 1992-08-05
    • MATSUSHITA ELECTRIC IND CO LTD
    • MIZOO YOSHIAKIYODA HIROSHIKODERA HIDETOSHIKITA YOZO
    • G11B15/61G06F17/11G06F17/13G06F19/00G11B15/64G06F15/20G06F15/32
    • PURPOSE:To deal with a shape of a structure which is independent of joint coordinates by treating a flow path of a fluid required at the time of analyzing a floating phenomenon as a mean gap. CONSTITUTION:Shape information on joints, elements and fine structures, characteristic values of an air film and a tape and boundary conditions, obtained by dividing objective analyzing areas such as the tape and a drum, etc., into simple elements in shape is inputted from an input part 1. A coefft. matrix of simultaneous equations of the fluid and the structure is constructed by a matrix constructing part 4 from the above physical information, and pressure by the air film is expressed by a correction Reynolds equation, while displacement of the tape is expressed by shell equation, and in a calculation part 5, as to a gap due to minute perturbation by each joint and element respectively, a term of an arithmetic mean gap of 1st-3rd degrees, a term of a harmonic mean gap of 1st-3rd degrees and a mixing mean gap of 1st-3rd degrees are calculated. In a resultant output part 3, data such as a shape of the tape, a distribution of stress, a distribution of pressure of the air film and a gap of the tape, etc., obtained by a floating analyzer part 2 are outputted by a printer, etc. These individual processing parts are formed on a display substrate having a transparent electrode.