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1. 发明专利

JP2005018985A Magnetic head slider and magnetic disk device 审中-公开
标题翻译：磁头滑块和磁盘设备
公开(公告)号：JP2005018985A
公开(公告)日：2005-01-20
申请号：JP2004302371
申请日：2004-10-18
申请人： Hitachi Global Storage Technologies Inc , 株式会社日立グローバルストレージテクノロジーズ
发明人： KODAIRA HIDEKAZU , MATSUMOTO MASAAKI , HASHIMOTO SEIJI , ENDO MASAYOSHI , TAKAKURA AKIO , TAKEUCHI YOSHINORI , HIGUCHI SHINSUKE , IIDA AKIRA
IPC分类号： G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To prevent the height of floating from being decreased due to the decrease in the atmospheric pressure at highlands, after the floating profile on the ground level is made approximately uniform, and to make the decrease in the height of floating approximately constant over the whole surface of a magnetic disk, in a magnetic head slider equipped with an air inflow edge and an air outflow edge.
SOLUTION: The slider or the magnetic disk having the slider is provided with a front step bearing formed on the side of the inflow edge, a rail surface formed between the front step bearing and the outflow edge, and a first and a second side pads disposed facing each other with respect to the width direction of the slider and formed between the rail surface and the outflow edge, in which the length of the first or the second side pad with respect to the width direction of the slider is longer than the length with respective to the length direction of the slider.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了防止由于地面上的大气压力的降低引起的浮动高度降低，在地平面上的浮动轮廓大致均匀之后，并且使得高度的降低在配备有空气流入边缘和空气流出边缘的磁头滑块中，在磁盘的整个表面上大致恒定地浮动。解决方案：具有滑块的滑块或磁盘设置有形成在流入边缘侧的前级轴承，形成在前级轴承和流出边缘之间的轨道表面，以及第一和第二相对于滑块的宽度方向彼此相对设置并形成在轨道表面和流出边缘之间的侧垫，其中第一或第二侧垫相对于滑块的宽度方向的长度大于相对于滑块的长度方向的长度。版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2005056447A Magnetic head slider and magnetic disk device 有权
标题翻译：磁头滑块和磁盘设备
公开(公告)号：JP2005056447A
公开(公告)日：2005-03-03
申请号：JP2003205235
申请日：2003-08-01
申请人： Hitachi Global Storage Technologies Inc , 株式会社日立グローバルストレージテクノロジーズ
发明人： KURITA MASAYUKI , SHIRAMATSU TOSHIYA , TANAKA HIDEAKI , YONEKAWA SUNAO , MIYAKE KOJI , KODAIRA HIDEKAZU , TOKUYAMA MIKIO
IPC分类号： G11B5/31 , G11B5/60 , G11B21/21
CPC分类号： G11B5/6064 , G11B5/6005
摘要： PROBLEM TO BE SOLVED: To reduce power consumption by reducing a thermal load of heat actuators on recording and reproducing elements, and further improving an efficiency of converting electric power into deformation in the heat actuators.
SOLUTION: A heating device 4 is arranged separately from the end parts of the recording and reproducing elements 2, 3. Further, to projectingly deform only the neighborhood of the heating device 4 and the recording and reproducing elements 2, 3, the heating device 4 and the recording and reproducing elements 2, 3 are surrounded with a small rigidity resin membrane 6 into such a structure as the surrounding material shuts off resistance force against the deformation, and thereby the deformation of the recording and reproducing elements 2, 3 per unit electric power is increased without raising the temperature of the reproducing element 3.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：通过减少记录和再现元件上的热致动器的热负荷来降低功耗，并且进一步提高将电力转换成热致动器的变形的效率。解决方案：加热装置4与记录和再现元件2,3的端部分开布置。此外，仅仅使加热装置4和记录和再现元件2,3的附近突出地变形，加热装置4和记录和再现元件2,3被小刚性树脂膜6包围成如周围材料切断抵抗变形的阻力的结构，从而记录和再现元件2,3的变形增加单位电力而不会提高再现元件3的温度。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2005050546A Magnetic head slider 审中-公开
标题翻译：磁头滑块
公开(公告)号：JP2005050546A
公开(公告)日：2005-02-24
申请号：JP2004300170
申请日：2004-10-14
申请人： Hitachi Global Storage Technologies Inc , 株式会社日立グローバルストレージテクノロジーズ
发明人： KODAIRA HIDEKAZU , MATSUMOTO MASAAKI , TANAKA HIDEAKI , HIGASHIYA TERUYOSHI , HASHIMOTO SEIJI , MATSUDA AKIRA , YAMAZAKI TAKANORI
IPC分类号： G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To roughly uniformize flying height covering the whole magnetic disk surface, to reduce change in the flying height at high altitude, and to realize smooth contact and slide of a head slider even when the magnetic head slider is brought into contact with a magnetic disk.
SOLUTION: A magnetic disk unit is equipped with the magnetic head slider having a magnetic head and the magnetic disk, wherein the vicinity of the magnetic head part of the magnetic head slider is brought into contact with the magnetic disk. In the magnetic disk unit, the magnetic slider has a length of 1.25 mm or less, a width of 1 mm or less and a thickness of 0.3 mm or less and friction force to act between the magnetic head slider and the magnetic disk is 10 mN or less. The magnetic head slider is constituted of four substantially parallel faces, wherein depth from a first face which is the face closest to the magnetic disk to a second face is about 10 nm to 50 nm, depth from the second face to a third face is about 50 nm to 200 nm and depth from the third face to a fourth face is 400 nm to 1 μm.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了使覆盖整个磁盘表面的飞行高度大致均匀化，减少高空飞行高度的变化，即使当磁头滑块被带入时也能实现头滑块的平滑接触和滑动与磁盘接触。解决方案：磁盘单元配备有具有磁头和磁盘的磁头滑块，其中磁头滑块的磁头部分附近与磁盘接触。在磁盘单元中，磁性滑动器的长度为1.25mm以下，宽度为1mm以下，厚度为0.3mm以下，摩擦力作用于磁头滑块与磁盘之间为10mN 或更少。磁头滑动器由四个基本上平行的面构成，其中从最靠近磁盘的第一面到第二面的深度为约10nm至50nm，从第二面到第三面的深度约为 50nm至200nm，从第三面到第四面的深度为400nm〜1μm。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2004348860A Magnetic disk unit 审中-公开
公开(公告)号：JP2004348860A
公开(公告)日：2004-12-09
申请号：JP2003144647
申请日：2003-05-22
申请人： Hitachi Global Storage Technologies Inc , 株式会社日立グローバルストレージテクノロジーズ
发明人： YONEMURA SHINJI , TANAKA HIDEAKI , KODAIRA HIDEKAZU , HASHIMOTO SEIJI , MATSUDA AKIRA
IPC分类号： G11B23/00 , G11B17/038
摘要： PROBLEM TO BE SOLVED: To provide a magnetic disk unit including a disk clamping structure which minimizes the micro-undulation on the surface of a magnetic disk.
SOLUTION: The magnetic disk 1 is clamped to a spindle hub 2 in such a manner that the undulation in the inner peripheral part of a magnetic head slider 5 movable on the surface of the magnetic disk 1 satisfies equation 5 when x is defined as the length in the peripheral direction of the magnetic disk 1, L as the length of the magnetic head slider 5, and f(x) as the displacement in the perpendicular direction of the magnetic disk 1 surface. As a result, the micro-undulation in the inner peripheral part of the magnetic disk surface is minimized, and since the gap between the magnetic head slider and the magnetic disk is maintained constant, the problem of the occurrence of sliding due to contact of the magnetic head slider and the magnetic disk is eliminated.
COPYRIGHT: (C)2005,JPO&NCIPI

5. 发明专利

JP2005004909A Magnetic disk device and floating control method of magnetic head slider 审中-公开
标题翻译：磁悬浮装置的磁性装置和浮动控制方法
公开(公告)号：JP2005004909A
公开(公告)日：2005-01-06
申请号：JP2003168684
申请日：2003-06-13
申请人： Hitachi Global Storage Technologies Inc , 株式会社日立グローバルストレージテクノロジーズ
发明人： YAMAZAKI TAKANORI , KODAIRA HIDEKAZU , TANAKA HIDEAKI
IPC分类号： G11B21/21 , G11B21/10
摘要： PROBLEM TO BE SOLVED: To provide a magnetic disk device capable of increasing recording density by detecting contact between a magnetic head slider and a magnetic disk, properly controlling a floating amount of the magnetic head slider at any time, and shortening the distance between recording/reproducing elements and a magnetic disk recording surface, and also obtaining favorable reliability of the magnetic disk device, in a magnetic disk device provided with micromotion actuators, ans to provide a floating control method of the magnetic head slider.
SOLUTION: In the magnetic disk device, a micromotion actuator generates an output signal according to rippling of a magnetic head slider 3 and monitors the output signal, and when detecting contact between the magnetic head slider 3 and the magnetic disk, a floating amount control mechanism 9 controls a floating amount of the magnetic head slider 3. Especially, the output signal from the micromotion actuator is frequency-analyzed by a frequency analysis circuit, and when oscillation components of the frequencies within the range of 50 to 500 Hz are detected, the magnetic head slider 3 and the magnetic disk are decided as in contact.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决问题：为了提供能够通过检测磁头滑块和磁盘之间的接触来提高记录密度的磁盘装置，可以适当地控制磁头滑块在任何时间的浮动量，并缩短距离在记录/再现元件和磁盘记录表面之间，并且在具有微动作致动器的磁盘装置中，还获得磁盘装置的良好的可靠性，以提供磁头滑块的浮动控制方法。解决方案：在磁盘装置中，微型执行器根据磁头滑块3的波纹产生输出信号并监视输出信号，并且当检测到磁头滑块3与磁盘之间的接触时，浮动数量控制机构9控制磁头滑动器3的浮动量。特别地，来自微动作致动器的输出信号由频率分析电路进行频率分析，并且当在50至500Hz范围内的频率的振荡分量为检测到磁头滑块3和磁盘是接触的。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JP2004342151A Floating control method of magnetic head slider, and magnetic disk device 审中-公开
公开(公告)号：JP2004342151A
公开(公告)日：2004-12-02
申请号：JP2003134337
申请日：2003-05-13
申请人： Hitachi Global Storage Technologies Inc , 株式会社日立グローバルストレージテクノロジーズ
发明人： MIYAKE KOJI , KURITA MASAYUKI , TOKUYAMA MIKIO , TANAKA HIDEAKI , KODAIRA HIDEKAZU
IPC分类号： G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To provide a control method in which the response time for the variation of the floating quantity can be shortened, in a magnetic disk device in which the floating quantity is adjusted by energizing a resistor for heating provided in the magnetic head slider.
SOLUTION: This method is a floating control method of a magnetic head slider having a resistor for heating for adjusting floating quantity of a recording and reproducing element recording and reproducing information in/from a magnetic disk, the time required for adjusting the floating quantity is shortened by applying excess power (excess power waveform 52) exceeding the prescribed power (rectangular power waveform 53) required for adjusting the floating of the recording and reproducing element for the prescribed time when supplying power to the resistor for heating is started.
COPYRIGHT: (C)2005,JPO&NCIPI

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