公开(公告)号：US5914168A

公开(公告)日：1999-06-22

申请号：US517757

申请日：1995-08-22

Applicant: Hiroaki Wakamatsu ,  Katsuhide Sone ,  Kiyoshi Yamaguchi ,  Yoshihiro Mitobe ,  Yoshito Kitamoto

Inventor： Hiroaki Wakamatsu ,  Katsuhide Sone ,  Kiyoshi Yamaguchi ,  Yoshihiro Mitobe ,  Yoshito Kitamoto

IPC: G11B5/82 ,  G11B5/56 ,  G11B5/60 ,  G11B5/64 ,  G11B5/65 ,  G11B5/72 ,  G11B5/73 ,  G11B5/738 ,  G11B21/21 ,  G11B5/66

CPC classification number: G11B5/7325 ,  G11B5/64 ,  G11B5/72 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/265

Abstract: A magnetic recording medium able to cope with low flying height of the magnetic head in a CSS system and having fine surface roughness, wherein (1) a metal layer having columnar protrusions formed by the filming of Ti or the like or (2) a resin layer or glass resin layer having irregularly distributed through-holes are provided on the substrate of a magnetic recording medium to impart roughness (texture).

Abstract translation: 一种磁记录介质，其能够应对CSS系统中磁头的飞行高度低并且具有良好的表面粗糙度，其中（1）具有通过Ti等的成膜形成的柱状突起的金属层或（2）树脂 在磁记录介质的基板上设置具有不规则分布的通孔的层或玻璃树脂层，以赋予粗糙度（纹理）。

公开(公告)号：US4675075A

公开(公告)日：1987-06-23

申请号：US899130

申请日：1986-08-22

Applicant: Yusaku Sakai ,  Yoshito Kitamoto ,  Shinji Ohtaki ,  Yasushi Tamaki ,  Hikaru Nagai

Inventor： Yusaku Sakai ,  Yoshito Kitamoto ,  Shinji Ohtaki ,  Yasushi Tamaki ,  Hikaru Nagai

IPC: G11B5/72 ,  G11B5/64 ,  G11B5/66 ,  G11B5/725 ,  G11B5/84 ,  B05D5/12

CPC classification number: G11B5/725 ,  Y10S428/90 ,  Y10T428/24612 ,  Y10T428/24669

Abstract: A magnetic recording medium having an excellent resistance to wear and CSS strength and showing a satisfactory lubricant retention, and processes for production thereof. The magnetic recording medium includes a substrate having formed thereon, in sequence, a magnetic recording layer, a protective coating, and a lubricant coating, the protective coating including a plane portion and a plurality of fine projections and recesses formed on the plane portion.

公开(公告)号：US6132875A

公开(公告)日：2000-10-17

申请号：US724323

申请日：1996-10-01

Applicant: Katsumi Kiuchi ,  Eishin Yamakawa ,  Yoshito Kitamoto ,  Makoto Watanabe ,  Masahiro Takagi ,  Akira Kikuchi

Inventor： Katsumi Kiuchi ,  Eishin Yamakawa ,  Yoshito Kitamoto ,  Makoto Watanabe ,  Masahiro Takagi ,  Akira Kikuchi

IPC: C23C16/26 ,  C23C28/00 ,  G11B5/10 ,  G11B5/255 ,  G11B5/31 ,  G11B5/39 ,  G11B5/72 ,  G11B5/725 ,  G11B5/84 ,  G11B33/14

CPC classification number: G11B5/3903 ,  C23C16/26 ,  C23C28/00 ,  C23C28/321 ,  C23C28/322 ,  C23C28/343 ,  C23C28/347 ,  C23C28/36 ,  G11B33/148 ,  G11B5/10 ,  G11B5/255 ,  G11B5/3106 ,  G11B5/72 ,  G11B5/725 ,  G11B5/8408 ,  G11B5/102 ,  G11B5/3163 ,  Y10S428/90 ,  Y10T428/30

Abstract: In a magnetic recording medium wherein a magnetic recording layer for storing information, a carbon type protective layer for preventing damage of the magnetic recording layer and a lubrication layer are sequentially formed on a non-magnetic substrate, the carbon protective layer has a relatively smaller hydrogen content on the side nearer the lubrication layer than on the side nearer the magnetic recording layer. In a magnetic head slider having an electromagnetic conversion device mounted thereto, a carbon protective layer is laminated on at least a sliding surface side, and a lubrication layer is disposed on the carbon type protective layer. In a recording apparatus including a recording medium for storing information and a magnetic head for recording or reproducing information to and from the memory medium, a carbon protective film having a lower hydrogen content at an upper, surface portion thereof than at a lower, initial portion thereof is formed on either the recording medium or a sliding portion of the magnetic head.

Abstract translation: 在用于存储信息的磁记录层的磁记录介质中，用于防止磁记录层损伤的碳类保护层和润滑层依次形成在非磁性基板上，碳保护层具有相对较小的氢 在靠近磁记录层的一侧更靠近润滑层的内容物。 在安装有电磁转换装置的磁头滑块中，至少在滑动面侧层叠有碳保护层，在碳类保护层上设置有润滑层。 在包括用于存储信息的记录介质和用于向存储介质记录或再现信息的磁头的记录装置中，具有在其上表面部分处的氢含量低于低于初始部分的碳保护膜 形成在磁头的记录介质或滑动部分上。

公开(公告)号：US5486276A

公开(公告)日：1996-01-23

申请号：US120149

申请日：1993-09-10

Applicant: Yoshito Kitamoto ,  Masahiro Takagi ,  Hiroshi Akiba ,  Kazuyuki Seki

Inventor： Yoshito Kitamoto ,  Masahiro Takagi ,  Hiroshi Akiba ,  Kazuyuki Seki

IPC: C23C14/34 ,  G11B5/72 ,  G11B5/84 ,  B05D3/12

CPC classification number: G11B5/72 ,  C23C14/3464 ,  G11B5/84 ,  Y10S428/90 ,  Y10T428/25

Abstract: A method for manufacturing small magnetic disks from a nonmagnetic large disk. A nonmagnetic large disk is first prepared, and subjected to at least one step of a manufacturing process necessary for manufacturing a magnetic disk from a nonmagnetic substrate. The manufacturing process may comprise the steps of applying at least one underlayer to the substrate, applying the layer of magnetic material to the underlayer, applying the protective layer to the layer of magnetic material, applying the lubricating layer to the protective layer, carrying out a texture treatment, polishing the underlayer, and burnishing the protective layer, and carrying out a levitation and characteristic test. After at least one of these steps, the large disk is divided into a plurality of the small disks. Accordingly, it is possible to manufacture small magnetic disks, by the use of manufacturing equipment designed to manufacture large magnetic disks.

Abstract translation: 一种从非磁性大型磁盘制造小型磁盘的方法。 首先制备非磁性大型磁盘，并且从非磁性基板经受制造磁盘所需的制造工艺的至少一个步骤。 该制造方法可以包括以下步骤：将至少一个底层施加到基底上，将该磁性材料层施加到底层上，将该保护层施加到该磁性材料层上，将该润滑层施加到该保护层上， 纹理处理，研磨底层，抛光保护层，进行悬浮和特征试验。 在这些步骤中的至少一个之后，大盘被分成多个小盘。 因此，可以通过使用设计用于制造大型磁盘的制造设备来制造小型磁盘。

公开(公告)号：US4664963A

公开(公告)日：1987-05-12

申请号：US623259

申请日：1984-06-21

Applicant: Yusaku Sakai ,  Yoshito Kitamoto ,  Shinji Ohtaki ,  Yasushi Tamaki ,  Hikaru Nagai

Inventor： Yusaku Sakai ,  Yoshito Kitamoto ,  Shinji Ohtaki ,  Yasushi Tamaki ,  Hikaru Nagai

IPC: G11B5/72 ,  G11B5/64 ,  G11B5/66 ,  G11B5/725 ,  G11B5/84

CPC classification number: G11B5/725 ,  Y10S428/90 ,  Y10T428/24612 ,  Y10T428/24669

Abstract: A magnetic recording medium having an excellent resistance to wear and CSS strength and showing a satisfactory lubricant retention, and processes for production thereof. The magnetic recording medium includes a substrate having formed thereon, in sequence, a magnetic recording layer, a protective coating, and a lubricant coating, the protective coating including a plane portion and a plurality of fine projections and recesses formed on the plane portion.

Abstract translation: 具有优异的耐磨性和CSS强度并显示令人满意的润滑剂保留性的磁记录介质及其制备方法。 磁记录介质包括依次形成有磁记录层，保护涂层和润滑剂涂层的基板，所述保护涂层包括平面部分和形成在平面部分上的多个细小突起和凹部。