公开(公告)号：US5411630A

公开(公告)日：1995-05-02

申请号：US149770

申请日：1993-11-10

申请人： Norikazu Nagase ,  Yoshihiro Moriguchi ,  Youichi Inomata ,  Hiroshi Yashiki ,  Masaki Ohura ,  Yoshiki Kato

发明人： Norikazu Nagase ,  Yoshihiro Moriguchi ,  Youichi Inomata ,  Hiroshi Yashiki ,  Masaki Ohura ,  Yoshiki Kato

IPC分类号： G11B5/72 ,  G11B5/82 ,  G11B5/84 ,  B44C1/22

CPC分类号： G11B5/8408 ,  G11B5/72 ,  G11B5/82

摘要： A method of forming projections on major surfaces of a disk comprises the steps of supporting the disk in a space, spraying a multiplicity of fine solid particles into the space, charging the sprayed fine solid particles with electricity of the same polarity so that the fine solid particles are floating in the space in a mutually separated state due to electric repellent forces acting between the fine solid particles, electrostatically depositing the fine solid particles charged with electricity on the surfaces of the disk, and etching the disk surfaces by using the deposited fine solid particles as masks, thereby forming a multiplicity of projections on the disk surfaces.

摘要翻译： 在盘的主表面上形成突起的方法包括以下步骤：将盘支撑在空间中，将多个细小固体颗粒喷射到该空间中，用相同极性的电为喷射的细固体颗粒充电，使得细固体 颗粒在相互分离的状态下漂浮在空间中，这是由于在微细固体颗粒之间作用的疏斥力，在盘的表面上静电沉积带电的细小固体颗粒，并通过使用沉积的细固体蚀刻盘表面 颗粒作为掩模，从而在盘表面上形成多个突起。

公开(公告)号：US5656349A

公开(公告)日：1997-08-12

申请号：US725772

申请日：1991-07-02

申请人： Kenichi Gomi ,  Hideaki Tanaka ,  Hiroyuki Sugimoto ,  Shoichi Sawahata ,  Masaki Ohura ,  Yoshihiko Miyake ,  Yoshiki Kato ,  Hiroshi Yashiki ,  Youichi Inomata ,  Yoshihiro Moriguchi

发明人： Kenichi Gomi ,  Hideaki Tanaka ,  Hiroyuki Sugimoto ,  Shoichi Sawahata ,  Masaki Ohura ,  Yoshihiko Miyake ,  Yoshiki Kato ,  Hiroshi Yashiki ,  Youichi Inomata ,  Yoshihiro Moriguchi

IPC分类号： G11B5/41 ,  G11B5/60 ,  G11B5/72 ,  G11B5/82 ,  G11B5/84 ,  G11B5/66 ,  B05D5/12

CPC分类号： G11B5/6005 ,  G11B5/41 ,  G11B5/72 ,  G11B5/82 ,  G11B5/84 ,  Y10S428/90 ,  Y10T428/24355

摘要： A magnetic disk has a magnetic layer and a protective layer disposed on the magnetic layer. A multiplicity of lands having sizes within a predetermined range of sizes and generally equal heights within a predetermined range are formed on the surface of the protective layer at a density within a predetermined range. The lands serve to effectively remove contaminants attached to the floating surface of a magnetic head to ensure a desired sliding reliability and floating stability of the head during a long period of time even in the case of a high-density magnetic disk apparatus in which the extent of floating of the head is small. The reliability with which the magnetic disk apparatus operates is thereby improved. The lands are formed on the surface of the protective layer by a process of forming a mask of fine particles on the protective layer surface and etching the protective layer surface through this mask.

摘要翻译： 磁盘具有设置在磁性层上的磁性层和保护层。 在预定范围内的密度下，在保护层的表面上形成尺寸在预定范围内的大小和大致相同高度的尺寸的多个平台。 这些焊盘用于有效地去除附着在磁头的浮动表面上的污染物，以确保在长时间内所需的滑动可靠性和浮动稳定性，即使在高密度磁盘设备的情况下， 的头部浮动很小。 从而提高了磁盘装置的可靠性。 通过在保护层表面上形成微粒掩模并通过该掩模蚀刻保护层表面的工艺，在保护层的表面上形成焊盘。

公开(公告)号：US5504646A

公开(公告)日：1996-04-02

申请号：US77874

申请日：1993-06-18

申请人： Hideaki Tanaka ,  Kenichi Gomi ,  Yoshihiko Miyake ,  Sigeru Sano ,  Youichi Inomata ,  Hiroshi Yashiki ,  Yoshiki Kato ,  Masaki Ohura

发明人： Hideaki Tanaka ,  Kenichi Gomi ,  Yoshihiko Miyake ,  Sigeru Sano ,  Youichi Inomata ,  Hiroshi Yashiki ,  Yoshiki Kato ,  Masaki Ohura

IPC分类号： G11B5/41 ,  G11B5/58 ,  G11B5/60 ,  G11B5/72 ,  G11B5/82 ,  G11B5/84 ,  G11B23/50

CPC分类号： G11B5/6005 ,  G11B23/505 ,  G11B5/72 ,  G11B5/82 ,  G11B5/8408 ,  G11B5/41 ,  G11B5/581 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/24537 ,  Y10T428/2457

摘要： There is provided a magnetic disk apparatus comprising: at least one magnetic disk having a magnetic layer and a surface protective layer on a substrate; a magnetic head which faces the magnetic disk in a rotating state with a micro gap and is supported by a slider; rotating means for rotating the magnetic disk; and a actuator for moving and positioning the magnetic head to a predetermined position on the magnetic disk, wherein a plurality of protrusions each having a flat surface are formed in at least a region on the surface of the magnetic disk where a contact start/stop operation can be executed. According to the above magnetic disk apparatus, since the frictional force between the disk and the head is small and the flying height of the head can be reduced and the good floating stability is obtained, so that the excellent recording and reproducing characteristics are derived. Further, protrusions are formed on the protective layer of the magnetic disk and the protrusion shapes are changed in a accordance with a radial position of the magnetic disk depending on the flying height of the magnetic head. According to the above magnetic disk apparatus, since the change of spacing can be set smaller than the change of the flying height, high recording density can be achieved.

摘要翻译： 提供一种磁盘装置，包括：在基板上具有磁性层和表面保护层的至少一个磁盘; 磁头，其在具有微小间隙的旋转状态下面对磁盘，并由滑块支撑; 用于旋转磁盘的旋转装置; 以及用于将磁头移动和定位到磁盘上的预定位置的致动器，其中在磁盘表面上的至少一个区域中形成有各自具有平坦表面的多个突起，其中接触开始/停止操作 可以执行。 根据上述磁盘装置，由于盘与头部之间的摩擦力小，能够降低头部的飞行高度，并且获得良好的浮动稳定性，从而导出良好的记录和再现特性。 此外，在磁盘的保护层上形成突起，并且根据磁头的飞行高度，根据磁盘的径向位置改变突起形状。 根据上述磁盘装置，由于可以将间隔的变化设定得小于飞行高度的变化，所以可以实现高的记录密度。

公开(公告)号：US5930073A

公开(公告)日：1999-07-27

申请号：US625159

申请日：1996-04-01

申请人： Hideaki Tanaka ,  Kenichi Gomi ,  Yoshihiko Miyake ,  Sigeru Sano ,  Youichi Inomata ,  Hiroshi Yashiki ,  Yoshiki Kato ,  Masaki Ohura

发明人： Hideaki Tanaka ,  Kenichi Gomi ,  Yoshihiko Miyake ,  Sigeru Sano ,  Youichi Inomata ,  Hiroshi Yashiki ,  Yoshiki Kato ,  Masaki Ohura

IPC分类号： G11B5/41 ,  G11B5/58 ,  G11B5/60 ,  G11B5/72 ,  G11B5/82 ,  G11B5/84 ,  G11B23/50 ,  G11B33/14

CPC分类号： G11B5/6005 ,  G11B23/505 ,  G11B5/72 ,  G11B5/82 ,  G11B5/8408 ,  G11B5/41 ,  G11B5/581 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/24537 ,  Y10T428/2457

摘要： There is provided a magnetic disk apparatus comprising: at least one magnetic disk having a magnetic layer and a surface protective layer on a substrate; a magnetic head which faces the magnetic disk in a rotating state with a micro gap and is supported by a slider; rotating means for rotating the magnetic disk; and a actuator for moving and positioning the magnetic head to a predetermined position on the magnetic disk, wherein a plurality of protrusions each having a flat surface are formed in at least a region on the surface of the magnetic disk where a contact start/stop operation can be executed. According to the above magnetic disk apparatus, since the frictional force between the disk and the head is small and the flying height of the head can be reduced and the good floating stability is obtained, so that the excellent recording and reproducing characteristics are derived. Further, protrusions are formed on the protective layer of the magnetic disk and the protrusion shapes are changed in a accordance with a radial position of the magnetic disk depending on the flying height of the magnetic head. According to the above magnetic disk apparatus, since the change of spacing can be set smaller than the change of the flying height, high recording density can be achieved.

摘要翻译： 提供一种磁盘装置，包括：在基板上具有磁性层和表面保护层的至少一个磁盘; 磁头，其在具有微小间隙的旋转状态下面对磁盘，并由滑块支撑; 用于旋转磁盘的旋转装置; 以及用于将磁头移动和定位到磁盘上的预定位置的致动器，其中在磁盘表面上的至少一个区域中形成有各自具有平坦表面的多个突起，其中接触开始/停止操作 可以执行。 根据上述磁盘装置，由于盘与头部之间的摩擦力小，能够降低头部的飞行高度，并且获得良好的浮动稳定性，从而导出良好的记录和再现特性。 此外，在磁盘的保护层上形成突起，并且根据磁头的飞行高度，根据磁盘的径向位置改变突起形状。 根据上述磁盘装置，由于可以将间隔的变化设定得小于飞行高度的变化，所以可以实现高的记录密度。

公开(公告)号：US06303205B1

公开(公告)日：2001-10-16

申请号：US09313283

申请日：1999-05-18

申请人： Hideaki Tanaka ,  Kenichi Gomi ,  Yoshihiko Miyake ,  Sigeru Sano ,  Youichi Inomata ,  Hiroshi Yashiki ,  Yoshiki Kato ,  Masaki Ohura

发明人： Hideaki Tanaka ,  Kenichi Gomi ,  Yoshihiko Miyake ,  Sigeru Sano ,  Youichi Inomata ,  Hiroshi Yashiki ,  Yoshiki Kato ,  Masaki Ohura

IPC分类号： B32B302

CPC分类号： G11B5/6005 ,  G11B5/41 ,  G11B5/581 ,  G11B5/72 ,  G11B5/82 ,  G11B5/8408 ,  G11B23/505 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/24537 ,  Y10T428/2457

摘要： A magnetic disk includes a substrate, a magnetic layer, and a protective layer. At least one region of a surface of the magnetic disk has protrusions. A height of each of the protrusions is not less than 5 nm and not greater than 40 nm, and is within ±30% of an average height of the protrusions. A density of the protrusions is not less than 200/mm2 and is not greater than 250,000/mm2. A width of a surface of each of the protrusions in a radial direction of the magnetic disk is not less than 0.1 &mgr;m and is not greater than 10 &mgr;m. The protrusions are discrete protrusions aligned in a spiral direction of the magnetic disk at a predetermined spacing in the radial direction of the magnetic disk. The at least one region of the surface of the magnetic disk includes flat areas between the protrusions. At least some of the flat areas extend continuously from an inner redius of the at least one region of the surface of the magnetic disk to an outer radius of t he at least one region of the surface of the magnetic disk.

摘要翻译： 磁盘包括基板，磁性层和保护层。 磁盘表面的至少一个区域具有突起。 每个突起的高度不小于5nm且不大于40nm，并且在突起的平均高度的±30％以内。 突起的密度不小于200 / mm 2，不大于250,000 / mm2。 每个突起在磁盘的径向方向上的宽度不小于0.1μm并且不大于10μm。 突起是在磁盘的径向方向上以预定间隔在磁盘的螺旋方向上对齐的离散突起。 磁盘表面的至少一个区域包括突起之间的平坦区域。 至少一些平坦区域从磁盘表面的至少一个区域的内部重新连续延伸到磁盘表面的至少一个区域的外半径。

公开(公告)号：US5280401A

公开(公告)日：1994-01-18

申请号：US796830

申请日：1991-11-25

申请人： Youichi Inomata ,  Yoshiki Kato ,  Masaki Ohura

发明人： Youichi Inomata ,  Yoshiki Kato ,  Masaki Ohura

IPC分类号： G11B5/64 ,  G11B5/65 ,  G11B5/66 ,  G11B5/73 ,  G11B5/738 ,  G11B5/84 ,  G11B5/85 ,  G11B5/851

CPC分类号： G11B5/7315 ,  G11B5/7325 ,  G11B5/8404

摘要： The magnetic recording medium includes a nonmagnetic substrate having different values of surface tension corresponding to surface free energy in a predetermined magnetic recording direction and in the direction substantially perpendicular thereto, a magnetic film epitaxially grown on the nonmagnetic substrate, and a protective film on the magnetic film. The surface of the nonmagnetic substrate is provided with irregular surfaces having gradients of 45 degrees .+-.10 degrees relative to the substrate surface. The magnetic film has a main component of an easy axis of magnetization in the magnetic recording direction. The hydrogen peroxide aqueous solution and nitric acid used for the surface treatment of the substrate affect differently the critical surface tension. The partial nonmetal layer can be partially worked to provide textures extending in the magnetic recording direction. The nonmagnetic substrate and the magnetic film are respectively made of substantially nickel-phosphorus and cobalt, and the partial nonmetal layer is made of carbon.

摘要翻译： 磁记录介质包括具有表面张力的非磁性基板（1），其表面张力的值在规定的磁记录方向上与其大致垂直的方向不同，并且形成在所述磁记录介质上的磁性膜（3） 通过插入非磁性金属层（2）并具有在磁记录方向上延伸的准备磁化的主要分量的衬底，膜（3）被覆盖有保护层（4）。 尤其适用于磁存储器。

公开(公告)号：US4939614A

公开(公告)日：1990-07-03

申请号：US175527

申请日：1988-03-31

申请人： Takaaki Shirakura ,  Shinya Matsuoka ,  Hiroshi Yashiki ,  Masanori Arayashiki ,  Masaki Ohura

发明人： Takaaki Shirakura ,  Shinya Matsuoka ,  Hiroshi Yashiki ,  Masanori Arayashiki ,  Masaki Ohura

IPC分类号： G11B5/72 ,  G11B5/73 ,  G11B5/738 ,  G11B5/82 ,  G11B5/84

CPC分类号： G11B5/7315 ,  G11B5/72 ,  G11B5/82 ,  G11B5/84

摘要： A magnetic disk medium in which texture working is performed on surfaces of a substrate or on surfaces of subbing films provided on the substrate to attain circumferential worked-traces so that the contact start stop area thereof is different from the recording/reproducing area thereof in roughness of the worked surfaces.

摘要翻译： 一种磁盘介质，其中在基板的表面上或在基板上设置的底胶膜的表面进行纹理加工以获得周向加工痕迹，使得其接触开始停止区域与其粗糙度的记录/再现区域不同 的工作表面。

公开(公告)号：US5353182A

公开(公告)日：1994-10-04

申请号：US985176

申请日：1992-12-02

申请人： Takao Nakamura ,  Nobuya Sekiyama ,  Masaki Ohura ,  Yoshiki Kato ,  Noriaki Okamoto ,  Masami Masuda

发明人： Takao Nakamura ,  Nobuya Sekiyama ,  Masaki Ohura ,  Yoshiki Kato ,  Noriaki Okamoto ,  Masami Masuda

IPC分类号： G11B5/82 ,  G11B5/84 ,  G11B5/48 ,  B05D5/12 ,  G11B5/012

CPC分类号： G11B5/8404 ,  G11B5/82 ,  Y10S428/90

摘要： A magnetic disk includes a non-magnetic substrate with a surface processed layer having fine irregularities formed at least on a main surface thereof, and at least a thin film magnetic film and a protective film formed in that order on the non-magnetic substrate in such a manner that the fine irregularities are duplicated thereof. The surface of the surface processed layer of the non-magnetic substrate has protrusions whose surfaces are made flat and a configuration which exhibits a three-dimensional bearing curve in which the bearing ratio at a section taken at a depth from the top of the surface which corresponds to the portion of the top portion deformed by the head load during the contact start-stops drive is between 0.1% and 10%. The protrusions formed on the surface processed layer have a height ranging from several nm to several tens of nm. The bearing ratio is a value obtained at a depth of 5 to 10 nm from the top of the protrusions.

摘要翻译： 磁盘包括具有至少在其主表面上形成有细微凹凸的表面处理层的非磁性基板，以及至少在非磁性基板上依次形成的薄膜磁性膜和保护膜 这种细微的不规则性被复制的方式。 非磁性基板的表面处理层的表面具有突起，其表面是平坦的，并且具有三维轴承曲线的构造，其中在从表面的顶部开始的深度处截取的截面的轴承比 对应于在接触开始 - 停止期间头部负载变形的顶部的部分在0.1％和10％之间。 形成在表面处理层上的突起具有几nm至几十nm的高度。 轴承比是从突起的顶部开始的深度为5〜10nm的值。

公开(公告)号：US5202810A

公开(公告)日：1993-04-13

申请号：US513609

申请日：1990-04-24

申请人： Takao Nakamura ,  Nobuya Sekiyama ,  Masaki Ohura ,  Yoshiki Kato ,  Noriaki Okamoto ,  Masami Masuda

发明人： Takao Nakamura ,  Nobuya Sekiyama ,  Masaki Ohura ,  Yoshiki Kato ,  Noriaki Okamoto ,  Masami Masuda

IPC分类号： G11B5/82 ,  G11B5/84

CPC分类号： G11B5/8404 ,  G11B5/82 ,  Y10S428/90

摘要： A magnetic disk includes a non-magnetic substrate with a surface processed layer having fine irregularities formed at least on a main surface thereof, and at least thin film magnetic film and a protective film formed in that order on the non-magnetic substrate in such a manner that the fine irregularities are duplicated thereof. The surface of the surface processed layer of the non-magnetic substrate has protrusions whose surfaces are made flat and a configuration which exhibits a three-dimensional bearing curve in which the bearing ratio at a section taken at a depth from the top of the surface which corresponds to the portion of the top portion deformed by the head load during the contact start-stops drive is between 0.1% and 10%. The protrusions formed on the surface processed layer have a height ranging from several nm to several tens of nm. The bearing ratio is a value obtained at a depth of 5 to 10 nm from the top of the protrusions.

摘要翻译： 磁盘包括具有至少在其主表面上形成有细微凹凸的表面处理层的非磁性基板，以及至少在非磁性基板上形成的薄膜磁性膜和保护膜。 方式是细微的不规则被复制。 非磁性基板的表面处理层的表面具有突起，其表面是平坦的，并且具有三维轴承曲线的构造，其中在从表面的顶部开始的深度处截取的截面的轴承比 对应于在接触开始 - 停止期间头部负载变形的顶部的部分在0.1％和10％之间。 形成在表面处理层上的突起具有几nm至几十nm的高度。 轴承比是从突起的顶部开始的深度为5〜10nm的值。

公开(公告)号：US6057021A

公开(公告)日：2000-05-02

申请号：US944472

申请日：1997-10-06

申请人： Akira Ishikawa ,  Yuzuru Hosoe ,  Yoshihiro Shiroishi ,  Masatoshi Takeshita ,  Yotsuo Yahisa ,  Tomoo Yamamoto ,  Akira Osaki ,  Kiwamu Tanahashi ,  Jun Fumioka ,  Yoshiki Kato ,  Masaki Ohura ,  Yukio Katoh

发明人： Akira Ishikawa ,  Yuzuru Hosoe ,  Yoshihiro Shiroishi ,  Masatoshi Takeshita ,  Yotsuo Yahisa ,  Tomoo Yamamoto ,  Akira Osaki ,  Kiwamu Tanahashi ,  Jun Fumioka ,  Yoshiki Kato ,  Masaki Ohura ,  Yukio Katoh

IPC分类号： G11B5/64 ,  G11B5/66 ,  G11B5/73 ,  G11B5/84 ,  G11B5/60

CPC分类号： G11B5/7325 ,  G11B5/64 ,  G11B5/66 ,  G11B5/8404 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/265

摘要： In a magnetic recording medium having a non-magnetic disk substrate and a magnetic film formed on the surface of the non-magnetic disk substrate, a surface average roughness factor Ra(r) on the surface of the medium being from 0.3 nm to 3 nm, an orientation ratio of coercivity being from 0.1 to 0.7, and an in-plane magnetic anisotropic energy being from 3.times.10.sup.4 J/m.sup.3 to 5.times.10.sup.5 J/m.sup.3. By using such a medium, it is possible to provide a magnetic recording apparatus in which the magnetic head is capable of flying in a low position and high-density recording is achieved.

摘要翻译： 在具有非磁盘基板和形成在非磁盘基板的表面上的磁性膜的磁记录介质中，介质表面的表面平均粗糙度Ra（r）为0.3nm〜3nm 矫顽力的取向比为0.1〜0.7，面内磁各向异性能为3×104J / m3〜5×105J / m3。 通过使用这种介质，可以提供磁头能够在低位置飞行的磁记录装置，并且实现高密度记录。