公开(公告)号：US08388414B2

公开(公告)日：2013-03-05

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

IPC: B08B1/02

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：US08221192B2

公开(公告)日：2012-07-17

申请号：US12537982

申请日：2009-08-07

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

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

IPC: B24B49/00

CPC classification number: G11B5/8404 ,  G11B5/3136 ,  G11B5/455 ,  G11B5/6064

Abstract: 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.

Abstract translation: 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：US20070153419A1

公开(公告)日：2007-07-05

申请号：US11645252

申请日：2006-12-21

Applicant: Reiko Arai ,  Katsumi Mabuchi ,  Mitsuhiro Shoda ,  Hiroyuki Matsumoto ,  Hiroyuki Nakagawa

Inventor： Reiko Arai ,  Katsumi Mabuchi ,  Mitsuhiro Shoda ,  Hiroyuki Matsumoto ,  Hiroyuki Nakagawa

IPC: G11B5/74 ,  G11B5/02

CPC classification number: G11B5/4555 ,  G11B5/7379

Abstract: Embodiments in accordance with the invention realize a perpendicular magnetic record medium with a high media S/N and excellent corrosion resistance. In a perpendicular magnetic record medium in accordance with an embodiment of the present invention prepared by forming an adhesion layer, an underlayer, a seed layer, an intermediate layer, and a recording layer sequentially on a substrate, the seed layer is specified to have a laminated structure consisting of a first seed layer and a second seed layer. The first seed layer consists of an amorphous alloy containing Cr and the second seed layer consists of an amorphous alloy predominantly composed of Ni with an fcc structure.

Abstract translation: 根据本发明的实施例实现了具有高介质S / N和优异耐腐蚀性的垂直磁记录介质。 在根据本发明的实施例的垂直磁记录介质中，通过在基板上依次形成粘合层，底层，种子层，中间层和记录层而制备，种子层被规定为具有 层叠结构由第一种子层和第二种子层构成。 第一晶种层由含有Cr的非晶合金构成，第二晶种层由主要由具有fcc结构的Ni构成的非晶合金构成。

公开(公告)号：US20060088735A1

公开(公告)日：2006-04-27

申请号：US11257852

申请日：2005-10-24

Applicant: Naoto Endou ,  Hiroyuki Matsumoto ,  Mitsuhiro Shoda

Inventor： Naoto Endou ,  Hiroyuki Matsumoto ,  Mitsuhiro Shoda

IPC: G11B5/65 ,  B05D5/12

CPC classification number: G11B5/72 ,  G11B5/8408

Abstract: Embodiments of the invention provide a magnetic disk manufacturing method for efficiently removing, in a tape cleaning process of a magnetic disk surface in which scratches tend to occur, fine protrusions that serve as a flying hindrance, allowing no glide noise to occur, and suppressing minor damages (scratches) that are given to the magnetic disk surface and cause a read signal error. In one embodiment, the magnetic disk manufacturing method is characterized in that a surface of a pad facing a cleaning tape is formed with protrusions and indentations.

Abstract translation: 本发明的实施例提供一种磁盘制造方法，用于在易于产生划痕的磁盘表面的带清洁过程中有效地去除作为飞行障碍的微小突起，不会产生滑动噪声，并且抑制小的 给磁盘表面造成损坏（划痕），并导致读取信号错误。 在一个实施例中，磁盘制造方法的特征在于，面向清洁带的焊盘的表面形成有突起和凹陷。

公开(公告)号：US06773784B2

公开(公告)日：2004-08-10

申请号：US10364501

申请日：2003-02-12

Applicant: Kouji Sonoda ,  Hiroshi Tani ,  Hiroyuki Matsumoto ,  Mitsuhiro Shoda ,  Toshinori Ono

Inventor： Kouji Sonoda ,  Hiroshi Tani ,  Hiroyuki Matsumoto ,  Mitsuhiro Shoda ,  Toshinori Ono

IPC: G11B5725

CPC classification number: C03C17/40 ,  G11B5/725 ,  G11B5/732 ,  G11B5/7325 ,  Y10T428/24942 ,  Y10T428/265

Abstract: The object of this invention is to provide a magnetic disk which has an excellent durability even with a protective film having a small film thickness of 4 nm or less. The magnetic disk of this invention is a magnetic disk comprising a non-magnetic substrate and, provided thereon, a magnetic metal film, carbon protective film and fluorine-containing lubricant film, wherein the carbon protective film is a DLC film having a film thickness of 4 nm or less and the ratio of infrared absorption intensity resulting from the C—H bond near 2,920 cm−1 determined by FT-IR using ATR to infrared absorption intensity resulting from the C—F bond of the lubricant film is 0.035-0.060.

Abstract translation: 本发明的目的是提供一种即使是具有4nm或更小的薄膜厚度的保护膜也具有优异的耐久性的磁盘。 本发明的磁盘是包含非磁性基片的磁盘，其上设置有磁性金属膜，碳保护膜和含氟润滑剂膜，其中碳保护膜是DLC膜，其膜厚度为 4nm以下，由FT-IR使用ATR测定的CH键附近的2,920cm -1处的红外吸收强度与由润滑剂膜的CF键导致的红外吸收强度的比率为0.035〜0.060。

公开(公告)号：US06395412B1

公开(公告)日：2002-05-28

申请号：US09399228

申请日：1999-09-20

Applicant: Yoshinori Honda ,  Yuuichi Kokaku ,  Mitsuhiro Shoda ,  Toshinori Ono

Inventor： Yoshinori Honda ,  Yuuichi Kokaku ,  Mitsuhiro Shoda ,  Toshinori Ono

IPC: G11B566

CPC classification number: G11B5/7315 ,  G11B5/656 ,  G11B5/72 ,  G11B5/7325 ,  Y10T428/24942

Abstract: Surface roughness of the magnetic layer and the protective layer is flatter than the surface roughness of the substrate to decrease medium noise, hereby levitation stability of the magnetic head in the ultra low region and high density recording is obtained, for magnetic recording medium and magnetic disk apparatus of high reliability.

Abstract translation: 磁性层和保护层的表面粗糙度比衬底的表面粗糙度平坦，以降低介质噪声，因此获得磁头在超低区域和高密度记录中的悬浮稳定性，对于磁记录介质和磁盘 高可靠性设备。