-
公开(公告)号：US08802247B2
公开(公告)日：2014-08-12
申请号：US11582878
申请日：2006-10-17
Applicant: Hiroyuki Matsumoto , Mitsuhiro Shoda , Reiko Arai , Yuzuru Hosoe , Katsumi Mabuchi
Inventor： Hiroyuki Matsumoto , Mitsuhiro Shoda , Reiko Arai , Yuzuru Hosoe , Katsumi Mabuchi
CPC classification number: G11B5/667
Abstract: A medium having high medium S/N and excellent corrosion resistance is achieved. In one embodiment, an adhesion layer, a soft magnetic layer, an intermediate layer, a magnetic recording layer, and a protective layer are deposited, in order, on a substrate. The soft magnetic underlayer consists at least of two soft magnetic layers, the first soft magnetic layer formed on the recording layer side being composed of an amorphous alloy containing 85 at. % or less of Co, and the second soft magnetic layer formed on the substrate side being composed of an alloy containing more than 85 at. % of Co.
Abstract translation: 实现了具有高介质S / N和优异耐腐蚀性的介质。 在一个实施例中，粘附层，软磁层，中间层，磁记录层和保护层依次沉积在基板上。 软磁性底层至少由两个软磁性层构成，记录层侧形成的第一软磁性层由含有85μm的非晶态合金构成。 Co以下的合金，由基板侧形成的第二软磁性层由含有85以上的合金构成。 有限公司
-
2.发明申请公开(公告)号：US20080113224A1
公开(公告)日：2008-05-15
申请号：US11985279
申请日：2007-11-13
Applicant: Toshinori Ono , Hiroyuki Matsumoto , Mitsuhiro Shoda , Hiroshi Kanai
Inventor： Toshinori Ono , Hiroyuki Matsumoto , Mitsuhiro Shoda , Hiroshi Kanai
CPC classification number: G11B5/72 , C23C16/26 , C23C16/45523 , C23C28/321 , C23C28/322 , C23C28/343 , G11B5/1278 , G11B5/667 , G11B5/82 , G11B5/8408
Abstract: 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.
Abstract translation: 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：US20070087226A1
公开(公告)日：2007-04-19
申请号：US11582878
申请日：2006-10-17
Applicant: Hiroyuki Matsumoto , Mitsuhiro Shoda , Reiko Arai , Yuzuru Hosoe , Katsumi Mabuchi
Inventor： Hiroyuki Matsumoto , Mitsuhiro Shoda , Reiko Arai , Yuzuru Hosoe , Katsumi Mabuchi
IPC: G11B5/66
CPC classification number: G11B5/667
Abstract: A medium having high medium S/N and excellent corrosion resistance is achieved. In one embodiment, an adhesion layer, a soft magnetic layer, an intermediate layer, a magnetic recording layer, and a protective layer are deposited, in order, on a substrate. The soft magnetic underlayer consists at least of two soft magnetic layers, the first soft magnetic layer formed on the recording layer side being composed of an amorphous alloy containing 85 at. % or less of Co, and the second soft magnetic layer formed on the substrate side being composed of an alloy containing more than 85 at. % of Co.
Abstract translation: 实现了具有高介质S / N和优异耐腐蚀性的介质。 在一个实施例中，依次将粘合层，软磁层，中间层，磁记录层和保护层沉积在基板上。 软磁性底层至少由两个软磁性层构成，记录层侧形成的第一软磁性层由含有85μm的非晶态合金构成。 Co以下的合金，由基板侧形成的第二软磁性层由含有85个以上的合金构成。 有限公司
-
4.发明授权公开(公告)号：US07147943B2
公开(公告)日：2006-12-12
申请号：US10429704
申请日：2003-05-06
Applicant: Toshinori Ono , Yuuichi Kokaku , Hiroyuki Matsumoto , Hiroshi Tani , Mitsuhiro Shoda , Tomonori Kozaki , Hiroshi Ishikawa , Toru Yatsue , Yoshinori Honda , Shigehiko Fujimaki
Inventor： Toshinori Ono , Yuuichi Kokaku , Hiroyuki Matsumoto , Hiroshi Tani , Mitsuhiro Shoda , Tomonori Kozaki , Hiroshi Ishikawa , Toru Yatsue , Yoshinori Honda , Shigehiko Fujimaki
CPC classification number: G11B5/8408 , G11B5/72
Abstract: This magnetic recording medium is characterized in that in the magnetic recording medium having a magnetic layer on a non-magnetic substrate by intercalating at least an under layer, the proportion of functional groups per 100 carbon atoms in a diamond-like carbon protective layer mainly composed of carbon for protecting the magnetic layer exceeds 20%. The bonding force between the protective layer and the lubricating layer of the magnetic recording medium is increased so that under high speed rotation, a decrease in the lubricating layer is not caused so as to provide a magnetic recording apparatus having high reliability.
-
5.发明授权公开(公告)号：US06927942B2
公开(公告)日：2005-08-09
申请号：US10198140
申请日：2002-07-19
Applicant: Hiroshi Tani , Mitsuhiro Shoda
Inventor： Hiroshi Tani , Mitsuhiro Shoda
CPC classification number: G11B5/10 , G11B5/6005
Abstract: A head slider has small friction force even if the head slider comes in contact with a magnetic disk having a smooth surface at high speed. The vibration is also low and wear resistance is high. The head slider is provided with plural air bearing surfaces for floating over the magnetic disk or one or more lubricant bearing surfaces for smoothly gliding over the magnetic disk. A slope angle on the front side of the bearing surface in the traveling direction of the head slider is larger than a slope angle on the rear side of the bearing surface in the vicinity of a contact part of the bearing surface that may come in contact with the magnetic disk.
Abstract translation: 即使磁头滑块与具有高速光滑表面的磁盘接触，磁头滑块也具有较小的摩擦力。 振动也低，耐磨性高。 磁头滑块设置有多个用于浮动在磁盘上的空气轴承表面或一个或多个润滑剂支承表面，以平滑地滑过磁盘。 在滑块的行进方向上的轴承表面的前侧上的倾斜角大于在轴承表面的与可能接触的轴承表面的接触部分附近的后侧的倾斜角度 磁盘。
-
Patent Agency Ranking
公开(公告)号：US06870704B2
公开(公告)日：2005-03-22
申请号：US10073291
申请日：2002-02-13
Applicant: Mitsuhiro Shoda , Hiroshi Tani , Hiroyuki Matsumoto , Takayuki Nakakawaji
Inventor： Mitsuhiro Shoda , Hiroshi Tani , Hiroyuki Matsumoto , Takayuki Nakakawaji
CPC classification number: G11B5/102 , C10M107/38 , C10M2213/0606 , C10N2240/204 , G11B25/043 , G11B33/148
Abstract: A low cost and highly reliable lubricating technique is realized by using a lubricant having an average molecular weight in the range of 900 to 2500. The lubricant is efficiently supplied to inner portions of a magnetic disk apparatus utilizing heat generated during operation of the apparatus. The method of assembling the apparatus is not affected since it is not necessary to provide a separate lubricant supply mechanism.
Abstract translation: 通过使用平均分子量为900〜2500的润滑剂，实现了低成本，高可靠性的润滑技术。利用在设备的操作过程中产生的热，润滑剂被有效地供给到磁盘装置的内部。 由于不需要设置单独的润滑剂供给机构，装置的组装方法不受影响。
-
公开(公告)号：US06509111B1
公开(公告)日：2003-01-21
申请号：US09609327
申请日：2000-06-30
Applicant: Mitsuhiro Shoda , Naoto Endo , Noriyoshi Goda , Yuzuru Hosoe , Akira Kato
Inventor： Mitsuhiro Shoda , Naoto Endo , Noriyoshi Goda , Yuzuru Hosoe , Akira Kato
IPC: G11B566
CPC classification number: G11B5/7325 , G11B5/82 , Y10S428/90
Abstract: 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 &Dgr;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.
Abstract translation: 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; 作为轴承比为0.01％的高度BH [0.01％]和高度BH [50％]之间的差异，由| BH [0.01％] -BH [50％] |定义的DELTABH [0.01,50] 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。
-
8.发明申请Apparatus for Cleaning Magnetic Disks and Methods for Manufacturing Magnetic Disks 有权用于清洁磁盘的设备和制造磁盘的方法公开(公告)号：US20100086676A1
公开(公告)日：2010-04-08
申请号：US12568437
申请日：2009-09-28
Applicant: Naoto Endou , Mitsuhiro Shoda , Toshinori Ono , Hiroyuki Matsumoto , Fumihito Takahashi
Inventor： Naoto Endou , Mitsuhiro Shoda , Toshinori Ono , Hiroyuki Matsumoto , Fumihito Takahashi
CPC classification number: G11B5/8408
Abstract: 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.
Abstract translation: 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
Applicant: Mitsuhiro Shoda , Naoto Endo , Noriyoshi Goda , Yuzuru Hosoe , Akira Kato
Inventor： Mitsuhiro Shoda , Naoto Endo , Noriyoshi Goda , Yuzuru Hosoe , Akira Kato
CPC classification number: G11B5/7325 , G11B5/64 , Y10S428/90 , Y10T428/265
Abstract: 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.
Abstract translation: 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
Applicant: Yotsuo Yahisa , Yoshibumi Matsuda , Joe Inagaki , Enji Fujita , Takao Yonekawa , Mitsuhiro Shoda , Akira Kato , Yuzuru Hosoe , Masukazu Igarashi
Inventor： Yotsuo Yahisa , Yoshibumi Matsuda , Joe Inagaki , Enji Fujita , Takao Yonekawa , Mitsuhiro Shoda , Akira Kato , Yuzuru Hosoe , Masukazu Igarashi
CPC classification number: G11B5/7315 , G11B5/7325 , G11B5/82 , G11B33/08 , Y10S428/90
Abstract: 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.
Abstract translation: 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。
-
-
-
-
-
-
-
-
-
Search Results
26
records
(took 0.017 seconds)
