公开(公告)号：US08221192B2

公开(公告)日：2012-07-17

申请号：US12537982

申请日：2009-08-07

申请人： Hidekazu Kashiwase ,  Hiroyuki Suzuki ,  Masae Suzuki, legal representative ,  Mitsuhiro Shoda ,  Takayoshi Ohtsu ,  Kiyoshi Hashimoto

发明人： Hidekazu Kashiwase ,  Hiroyuki Suzuki ,  Mitsuhiro Shoda ,  Takayoshi Ohtsu ,  Kiyoshi Hashimoto

IPC分类号： B24B49/00

CPC分类号： G11B5/8404 ,  G11B5/3136 ,  G11B5/455 ,  G11B5/6064

摘要： A magnetic-recording-disk test-head. The magnetic-recording-disk test-head includes a slider, a test pad and a slider-surface-shape control mechanism. The slider includes a leading edge and a trailing edge. The test pad is disposed at a trailing-edge side of the slider and is configured to remove and to detect asperities on a magnetic-recording disk. The slider-surface-shape control mechanism is configured to change a shape of an air-bearing surface of the slider and is disposed at a leading-edge side of the slider.

摘要翻译： 磁记录盘测试头。 磁记录盘测试头包括滑块，测试垫和滑块表面形状控制机构。 滑块包括前缘和后缘。 测试垫设置在滑块的后缘侧，并且被配置为移除并检测磁记录盘上的凹凸。 滑块表面形状控制机构构造为改变滑块的空气轴承表面的形状并且设置在滑块的前缘侧。

公开(公告)号：US20100086676A1

公开(公告)日：2010-04-08

申请号：US12568437

申请日：2009-09-28

申请人： Naoto Endou ,  Mitsuhiro Shoda ,  Toshinori Ono ,  Hiroyuki Matsumoto ,  Fumihito Takahashi

发明人： Naoto Endou ,  Mitsuhiro Shoda ,  Toshinori Ono ,  Hiroyuki Matsumoto ,  Fumihito Takahashi

IPC分类号： B05D5/12 ,  B05C11/10

CPC分类号： G11B5/8408

摘要： A method, according to one embodiment, includes forming a lubricant film on a magnetic disk having at least a magnetic recording film above a substrate, and a protective film above the magnetic recording film, and wiping the lubricant film while rotating the substrate, e.g., at about 3.0 m/s to about 3.5 m/s by pressing a pad against a wiping cloth e.g., at a loading speed of about 12 mm/min to about 36 mm/min e.g., under a pressure of about 3 gf/mm2 to about 9 gf/mm2. The pad has a convexly curved surface in contact with the wiping cloth, and the wiping cloth is disposed so as to oppose the lubricant film. The method also includes pressing a cleaning tape which includes abrasive grains against the substrate on which the protective film and lubricant film are formed while rotating the substrate to remove protrusions. Apparatuses and forming the layers are also described.

摘要翻译： 根据一个实施例的方法包括在至少在基底上方具有磁记录膜的磁盘上形成润滑膜，以及在磁记录膜上方形成保护膜，并且在旋转衬底的同时擦拭润滑剂膜， 通过将垫压在擦拭布上，例如以约12mm / min至约36mm / min的加载速度例如在约3gf / mm 2的压力下压到约3.0m / s至约3.5m / s， 约9 gf / mm2。 垫具有与擦拭布接触的凸曲面，并且擦拭布布置成与润滑剂膜相对。 该方法还包括在旋转衬底以移除突起的同时将包括磨粒的清洁带压在其上形成保护膜和润滑剂膜的基底上。 还描述了设备和形成层。

公开(公告)号：US06852432B2

公开(公告)日：2005-02-08

申请号：US10293261

申请日：2002-11-14

申请人： Mitsuhiro Shoda ,  Naoto Endo ,  Noriyoshi Goda ,  Yuzuru Hosoe ,  Akira Kato

发明人： Mitsuhiro Shoda ,  Naoto Endo ,  Noriyoshi Goda ,  Yuzuru Hosoe ,  Akira Kato

IPC分类号： G11B5/64 ,  G11B5/73 ,  G11B5/66 ,  G11B5/70

CPC分类号： G11B5/7325 ,  G11B5/64 ,  Y10S428/90 ,  Y10T428/265

摘要： A magnetic recording media formed of magnetic alloy layer of Co as the main component on a substrate through an under-layer, a protective layer and a lubricant layer, stacked in this order, said under-layer comprises plural under-layers including a first under layer of a substantially amorphous and a second under layer of crystalline stacked in this order; and a Δ BH[0.01, 50] defined by |BH[0.01%]−BH[50%]|, as the difference between a height BH[0.01%] where a Bearing ratio is 0.01% and a height BH[50%] where a Bearing ratio is 50%, is not less than 3 nm and not more than 6 nm, where a Bearing Curve is given by a surface roughness curve of magnetic recording media.

摘要翻译： 由Co的磁性合金层作为主要成分的磁性记录介质通过下层，保护层和润滑剂层依次堆叠在基板上，所述下层包括多个下层，其包括第一下层 基本上无定形的层和第二下层结晶层; 和由BH [0.01％] -BH [50％] |定义的ΔBB[0.01,50]，作为轴承比为0.01％的高度BH [0.01％]和高度BH [50％ ]其中轴承比为50％，不小于3nm且不大于6nm，其中轴承曲线由磁记录介质的表面粗糙度曲线给出。

公开(公告)号：US5906884A

公开(公告)日：1999-05-25

申请号：US518391

申请日：1995-08-15

申请人： Yotsuo Yahisa ,  Yoshibumi Matsuda ,  Joe Inagaki ,  Enji Fujita ,  Takao Yonekawa ,  Mitsuhiro Shoda ,  Akira Kato ,  Yuzuru Hosoe ,  Masukazu Igarashi

发明人： Yotsuo Yahisa ,  Yoshibumi Matsuda ,  Joe Inagaki ,  Enji Fujita ,  Takao Yonekawa ,  Mitsuhiro Shoda ,  Akira Kato ,  Yuzuru Hosoe ,  Masukazu Igarashi

IPC分类号： G11B5/66 ,  G11B5/65 ,  G11B5/73 ,  G11B5/82 ,  G11B33/08

CPC分类号： G11B5/7315 ,  G11B5/7325 ,  G11B5/82 ,  G11B33/08 ,  Y10S428/90

摘要： A magnetic recording medium has a substrate made of a nonmetal nonmagnetic material whose coefficient of linear expansion lies within a range from 0.000013/deg to 0.0001/deg. A magnetic layer is formed on the substrate as a thin polycrystalline film or a thin amorphous film. The magnetic layer has Co as a main component, which exhibits a negative magnetostrictive constant so that its coercive force rises in the direction of compressive strain. The magnetic layer is subjected to an in-plane compressive strain from the substrate due to a difference between the coefficient of thermal expansion of the substrate and the magnetic layer so that high coercivity is obtained in the magnetic layer.

摘要翻译： 磁记录介质具有由非金属非磁性材料制成的基板，其线性膨胀系数在0.000013 / deg至0.0001 / deg的范围内。 作为薄多晶膜或薄的无定形膜，在基板上形成磁性层。 磁性层具有Co作为主要成分，其表现出负的磁致伸缩常数，使其矫顽力沿压缩应变的方向上升。 由于衬底的热膨胀系数与磁性层之间的差异，磁性层受到来自衬底的面内压缩应变，从而在磁性层中获得高的矫顽力。

公开(公告)号：US08018673B2

公开(公告)日：2011-09-13

申请号：US12618685

申请日：2009-11-13

申请人： Manabu Saikawa ,  Atsushi Takeichi ,  Yuki Hashimoto ,  Kenji Kuroki ,  Mitsuhiro Shoda

发明人： Manabu Saikawa ,  Atsushi Takeichi ,  Yuki Hashimoto ,  Kenji Kuroki ,  Mitsuhiro Shoda

IPC分类号： G11B21/02 ,  G11B27/36

CPC分类号： G11B5/6005 ,  G11B5/59633 ,  G11B5/59638 ,  G11B5/6064

摘要： A disk drive. The disk drive includes a plurality of head-sliders, an actuator, a plurality of clearance adjustment sections, and a controller. Each head-slider includes a slider and a magnetic-recording head on the slider for accessing a disk for storing data. The plurality of head-sliders is secured to the actuator that is configured to move the plurality of head-sliders concurrently. Each clearance adjustment section corresponds to each head-slider of the plurality of head-sliders and adjusts a clearance of the corresponding head-slider. In addition, the controller is configured to position the actuator by servo control with a first head-slider selected from the plurality of head-sliders, to change a clearance of a second head-slider different from the first head-slider by controlling a clearance adjustment section of the second head-slider to bring the second head-slider into contact with a disk, and to detect the contact to measure the clearance of the second head-slider.

摘要翻译： 磁盘驱动器 磁盘驱动器包括多个磁头滑块，致动器，多个间隙调整部分和控制器。 每个头部滑动器包括滑动器和滑块上的磁记录头，用于访问用于存储数据的磁盘。 多个头部滑块被固定到致动器，其被构造成同时移动多个头部滑块。 每个间隙调节部分对应于多个头部滑块中的每个头部滑块，并且调整相应的头部 - 滑块的间隙。 此外，控制器被配置为通过伺服控制来定位致动器，其中第一头滑块选自多个头部滑块，以通过控制间隙来改变与第一头部滑块不同的第二头部滑块的间隙 调节部分，使第二磁头滑块与磁盘接触，并检测接触件以测量第二磁头滑块的间隙。

公开(公告)号：US20100123970A1

公开(公告)日：2010-05-20

申请号：US12618685

申请日：2009-11-13

申请人： Manabu Saikawa ,  Atsushi Takeichi ,  Yuki Hashimoto ,  Kenji Kuroki ,  Mitsuhiro Shoda

发明人： Manabu Saikawa ,  Atsushi Takeichi ,  Yuki Hashimoto ,  Kenji Kuroki ,  Mitsuhiro Shoda

IPC分类号： G11B21/02 ,  G11B21/16

CPC分类号： G11B5/6005 ,  G11B5/59633 ,  G11B5/59638 ,  G11B5/6064

摘要： A disk drive. The disk drive includes a plurality of head-sliders, an actuator, a plurality of clearance adjustment sections, and a controller. Each head-slider includes a slider and a magnetic-recording head on the slider for accessing a disk for storing data. The plurality of head-sliders is secured to the actuator that is configured to move the plurality of head-sliders concurrently. Each clearance adjustment section corresponds to each head-slider of the plurality of head-sliders and adjusts a clearance of the corresponding head-slider. In addition, the controller is configured to position the actuator by servo control with a first head-slider selected from the plurality of head-sliders, to change a clearance of a second head-slider different from the first head-slider by controlling a clearance adjustment section of the second head-slider to bring the second head-slider into contact with a disk, and to detect the contact to measure the clearance of the second head-slider.

摘要翻译： 磁盘驱动器 磁盘驱动器包括多个磁头滑块，致动器，多个间隙调整部分和控制器。 每个头部滑动器包括滑动器和滑块上的磁记录头，用于访问用于存储数据的磁盘。 多个头部滑块被固定到致动器，其被构造成同时移动多个头部滑块。 每个间隙调节部分对应于多个头部滑块中的每个头部滑块，并且调整相应的头部 - 滑块的间隙。 此外，控制器被配置为通过伺服控制来定位致动器，其中第一头滑块选自多个头部滑块，以通过控制间隙来改变与第一头部滑块不同的第二头部滑块的间隙 调节部分，使第二磁头滑块与磁盘接触，并检测接触件以测量第二磁头滑块的间隙。

公开(公告)号：US07042678B2

公开(公告)日：2006-05-09

申请号：US10602603

申请日：2003-06-25

申请人： Ryuji Tsuchiyama ,  Hiroshi Tani ,  Mikio Tokuyama ,  Hidekazu Kohira ,  Masayuki Kurita ,  Mitsuhiro Shoda ,  Junguo Xu ,  Masaaki Matsumoto

发明人： Ryuji Tsuchiyama ,  Hiroshi Tani ,  Mikio Tokuyama ,  Hidekazu Kohira ,  Masayuki Kurita ,  Mitsuhiro Shoda ,  Junguo Xu ,  Masaaki Matsumoto

IPC分类号： G11B17/32

CPC分类号： G11B5/6005

摘要： A magnetic head slider in which a leading pad is projected in a thicknesswise direction of the slider, in comparison with a trailing pad so as to reduce vibration caused by contact between a flat medium surface of a disc and the slider carrying thereon a magnetic head, to reduce variation in flying height caused by wavy unevenness of the medium surface, and to reduce variation in atmospheric pressure around the slider, thereby it is possible to enhance the recording density and the reliability of the magnetic head slider while reducing the costs thereof. Further, a magnetic disc unit using the above-mentioned magnetic head slider.

摘要翻译： 一种磁头滑动器，其中前导垫沿着滑块的厚度方向突出，与后垫相比，以减少由平坦的介质表面与承载磁头的滑块之间的接触引起的振动， 为了减少由于介质表面的波浪状不均匀性引起的飞行高度的变化，并且减小滑动件周围的大气压力的变化，从而可以提高磁头滑块的记录密度和可靠性，同时降低其成本。 此外，使用上述磁头滑块的磁盘单元。

公开(公告)号：US07875372B2

公开(公告)日：2011-01-25

申请号：US11985279

申请日：2007-11-13

申请人： Toshinori Ono ,  Hiroyuki Matsumoto ,  Mitsuhiro Shoda ,  Hiroshi Kanai

发明人： Toshinori Ono ,  Hiroyuki Matsumoto ,  Mitsuhiro Shoda ,  Hiroshi Kanai

IPC分类号： G11B5/66

CPC分类号： G11B5/72 ,  C23C16/26 ,  C23C16/45523 ,  C23C28/321 ,  C23C28/322 ,  C23C28/343 ,  G11B5/1278 ,  G11B5/667 ,  G11B5/82 ,  G11B5/8408

摘要： Embodiments of the present invention help to improve corrosion resistance and durability by providing a functional diamond like carbon (DLC) protective layer for a perpendicular magnetic recording medium using a granular magnetic layer. According to one embodiment, when a DLC protective layer that protects a granular magnetic layer of a perpendicular magnetic recording medium is formed using a CVD method, the thickness of a first layer on the granular magnetic layer is set to 7.5 to 25% of the total thickness of the protective layer and a hydrogen content of the first layer is set to 33 to 38%, the thickness of a second layer is set to 50 to 85% of the total thickness of the protective layer and a nitrogen content of the second layer is set to 3 to 7%, and the thickness of a third layer located at the outermost side of the protective layer is set to 7.5 to 25% of the total thickness of the protective layer and a hydrogen content of the third layer is set to 25% or less.

摘要翻译： 本发明的实施方式通过为使用粒状磁性层的垂直磁记录介质提供功能性金刚石碳（DLC）保护层，有助于提高耐腐蚀性和耐久性。 根据一个实施例，当使用CVD方法形成保护垂直磁记录介质的粒状磁性层的DLC保护层时，粒状磁性层上的第一层的厚度设定为总体的7.5〜25％ 保护层的厚度和第一层的氢含量设定为33〜38％，第二层的厚度设定为保护层的总厚度的50〜85％，第二层的氮含量 设定为3〜7％，将位于保护层最外侧的第3层的厚度设定为保护层的总厚度的7.5〜25％，将第3层的氢含量设定为 25％以下。

公开(公告)号：US07718282B2

公开(公告)日：2010-05-18

申请号：US11259921

申请日：2005-10-26

申请人： Shigehiko Fujimaki ,  Toshinori Ono ,  Mitsuhiro Shoda

发明人： Shigehiko Fujimaki ,  Toshinori Ono ,  Mitsuhiro Shoda

IPC分类号： G11B5/66

CPC分类号： G11B5/667 ,  G11B5/65 ,  G11B5/8408 ,  G11B5/851

摘要： A magnetic recording medium with a granular magnetic recording layer excellent in corrosion resistance is provided. In one embodiment, after formation of, on a non-magnetic substrate, an NiTa adhesion layer, a soft magnetic layer, a Ta intermediate layer, an Ru intermediate layer, and a Co alloy granular magnetic recording layer, hydrogen (H2) plasma processing is applied to the surface of the Co alloy granular magnetic recording layer. Then, a DLC protective film layer is formed and a lubricant layer is coated.

摘要翻译： 提供具有耐腐蚀性优良的粒状磁记录层的磁记录介质。 在一个实施例中，在非磁性基板上形成NiTa粘附层，软磁性层，Ta中间层，Ru中间层和Co合金粒状磁记录层之后，形成氢（H 2）等离子体处理 施加到Co合金粒状磁记录层的表面。 然后，形成DLC保护膜层并涂覆润滑剂层。

公开(公告)号：US20060121317A1

公开(公告)日：2006-06-08

申请号：US11288546

申请日：2005-11-28

申请人： Yuichi Kokaku ,  Mitsuhiro Shoda ,  Hiroyuki Matsumoto ,  Mikio Suzuki ,  Takehiko Hamaguchi ,  Yuzuru Hosoe

发明人： Yuichi Kokaku ,  Mitsuhiro Shoda ,  Hiroyuki Matsumoto ,  Mikio Suzuki ,  Takehiko Hamaguchi ,  Yuzuru Hosoe

IPC分类号： B05D5/12

CPC分类号： G11B20/10009 ,  G11B5/4555 ,  G11B5/65 ,  G11B5/667 ,  G11B5/8404 ,  G11B20/1816

摘要： The present invention restricts defect density on the magnetic disk based on predetermined polishing conditions by applying a magnetic field to the entire surface of a magnetic disk in a direction vertical thereto, rotating the magnetic disk, loading a magnetic head to the magnetic disk, reproducing signals from the magnetic disk, processing the reproduced signals by a waveform analyzer, counting pulse waveforms of 0.9 times or more a servo-bit length at ½ threshold value of an average output, and measuring the defect density on the magnetic disk giving an undesired effect on the I/O performance of the magnetic disk drive. In a case of a magnetic recording medium using a vertical magnetic recording system, even with fine defect of magnetic layer, a servo pattern cannot be judged correctly. This provides degradation of the I/O performance of increasing the time necessary for reading out large capacity data, lowering the performance of the entire magnetic disk drive.

摘要翻译： 本发明基于预定的抛光条件来限制磁盘上的缺陷密度，通过向垂直于其的方向的磁盘的整个表面施加磁场，旋转磁盘，将磁头加载到磁盘，再现信号 通过波形分析器对再生信号进行处理，对平均输出的1/2阈值的伺服位长度的0.9倍以上的脉冲波形进行计数，并测量磁盘上的缺陷密度，给出不期望的影响 磁盘驱动器的I / O性能。 在使用垂直磁记录系统的磁记录介质的情况下，即使磁性层的细小缺陷，也不能正确判断伺服图案。 这提供了I / O性能的劣化，从而增加了读取大容量数据所需的时间，降低了整个磁盘驱动器的性能。