公开(公告)号：US20060216551A1

公开(公告)日：2006-09-28

申请号：US11385182

申请日：2006-03-20

申请人： Tatsuya Tanifuji ,  Noriyuki Kumasaka

发明人： Tatsuya Tanifuji ,  Noriyuki Kumasaka

IPC分类号： G11B5/66 ,  B05D5/12

CPC分类号： G11B5/667 ,  G11B5/8404

摘要： A perpendicular magnetic recording disk is produced by forming a soft magnetic layer on a non-magnetic substrate either directly or through a foundation layer in between, forming texturing marks on the surface of this soft magnetic layer, forming a perpendicular magnetic recording layer on the soft magnetic layer either directly or through an intermediate layer in between, and forming a protective layer on the perpendicular recording layer. A texturing process is carried out such that the average surface roughness of the soft magnetic layer is 0.5 Å-5.0 Å, and the line density of the texturing marks is 30 lines/μm or more.

摘要翻译： 通过在非磁性基板上直接或通过其间的基础层形成软磁性层来形成垂直磁记录盘，在该软磁性层的表面上形成纹理标记，在柔软的磁性层上形成垂直磁记录层 磁性层直接或通过中间层之间的中间层，并在垂直记录层上形成保护层。 进行纹理化处理，使得软磁性层的平均表面粗糙度为0.5〜5.0，纹理标记的线密度为30线/μm以上。

公开(公告)号：US20050238927A1

公开(公告)日：2005-10-27

申请号：US11114256

申请日：2005-04-25

申请人： Yuji Horie ,  Tatsuya Tanifuji ,  Noriyuki Kumasaka

发明人： Yuji Horie ,  Tatsuya Tanifuji ,  Noriyuki Kumasaka

IPC分类号： B24B21/00 ,  B05D1/00 ,  B05D3/00 ,  B24B21/04 ,  B24B37/00 ,  B32B1/00 ,  C03C19/00 ,  C03C21/00 ,  G11B5/73 ,  G11B5/84

CPC分类号： G11B5/7315 ,  B24B21/04 ,  B24B37/04 ,  C03C19/00 ,  C03C21/002 ,  C03C2204/08 ,  G11B5/8404

摘要： A glass substrate for perpendicular magnetic recording, having a surface with an average surface roughness of 2.0 Å or less and surface height variations of 1 Å or less with wavelengths in the range of 0.05 mm-0.5 mm in both radial and circumferential directions, is produced by rotating a glass substrate, supplying polishing slurry containing a specified amount of abrading particles of artificial diamond on its surface, pressing a polishing tape on the surface and causing this polishing tape to travel in a direction opposite to the direction of rotation of the glass substrate.

摘要翻译： 制造用于垂直磁记录的玻璃基板，具有平均表面粗糙度为2.0或更小的表面，以及在径向和圆周方向上的波长在0.05mm-0.5mm的范围内的表面高度变化为1或更小的表面高度变化 通过旋转玻璃基板，在其表面上供给包含特定量的人造金刚石研磨颗粒的研磨浆料，将表面上的研磨带压制，并使该研磨带沿与玻璃基板的旋转方向相反的方向行进 。

公开(公告)号：US08348721B2

公开(公告)日：2013-01-08

申请号：US12394461

申请日：2009-02-27

申请人： Yuji Horie ,  Tatsuya Tanifuji ,  Noriyuki Kumasaka

发明人： Yuji Horie ,  Tatsuya Tanifuji ,  Noriyuki Kumasaka

IPC分类号： B24B7/22

CPC分类号： G11B5/7315 ,  B24B21/04 ,  B24B37/04 ,  C03C19/00 ,  C03C21/002 ,  C03C2204/08 ,  G11B5/8404

摘要： A glass substrate for perpendicular magnetic recording, having a surface with an average surface roughness of 2.0Å or less and surface height variations of 1Å or less with wavelengths in the range of 0.05 mm-0.5 mm in both radial and circumferential directions, is produced by rotating a glass substrate, supplying polishing slurry containing a specified amount of abrading particles of artificial diamond on its surface, pressing a polishing tape on the surface and causing this polishing tape to travel in a direction opposite to the direction of rotation of the glass substrate.

摘要翻译： 用于垂直磁记录的玻璃基板，其具有平均表面粗糙度为2.0或更小的表面，以及在径向和圆周方向上的波长在0.05mm-0.5mm范围内的表面高度变化为1或更小的表面，其由 旋转玻璃基板，在其表面上供给含有规定量的人造金刚石研磨颗粒的研磨浆料，将研磨带压在表面上，使该研磨带沿与玻璃基板的旋转方向相反的方向行进。

公开(公告)号：US20090163117A1

公开(公告)日：2009-06-25

申请号：US12394461

申请日：2009-02-27

申请人： Yuji Horie ,  Tatsuya Tanifuji ,  Noriyuki Kumasaka

发明人： Yuji Horie ,  Tatsuya Tanifuji ,  Noriyuki Kumasaka

IPC分类号： B24B7/24 ,  B24B7/26

CPC分类号： G11B5/7315 ,  B24B21/04 ,  B24B37/04 ,  C03C19/00 ,  C03C21/002 ,  C03C2204/08 ,  G11B5/8404

摘要： A glass substrate for perpendicular magnetic recording, having a surface with an average surface roughness of 2.0 Å or less and surface height variations of 1 Å or less with wavelengths in the range of 0.05 mm-0.5 mm in both radial and circumferential directions, is produced by rotating a glass substrate, supplying polishing slurry containing a specified amount of abrading particles of artificial diamond on its surface, pressing a polishing tape on the surface and causing this polishing tape to travel in a direction opposite to the direction of rotation of the glass substrate.

摘要翻译： 制造用于垂直磁记录的玻璃基板，具有平均表面粗糙度为2.0或更小的表面，以及在径向和圆周方向上的波长在0.05mm-0.5mm的范围内的表面高度变化为1或更小的表面高度变化 通过旋转玻璃基板，在其表面上供给包含特定量的人造金刚石研磨颗粒的研磨浆料，将表面上的研磨带压制，并使该研磨带沿与玻璃基板的旋转方向相反的方向行进 。

公开(公告)号：US20050248882A1

公开(公告)日：2005-11-10

申请号：US11176426

申请日：2005-07-06

申请人： Yuji Horie ,  Hiromitsu Okuyama ,  Tatsuya Tanifuji

发明人： Yuji Horie ,  Hiromitsu Okuyama ,  Tatsuya Tanifuji

IPC分类号： B24B21/00 ,  B24B37/00 ,  B24B37/20 ,  B24B37/24 ,  C03C19/00 ,  C09K3/14 ,  G11B5/73 ,  G11B5/82 ,  G11B5/84

CPC分类号： G11B5/7315 ,  B24B37/042 ,  C03C19/00 ,  C03C2204/08 ,  G11B5/82 ,  G11B5/8404

摘要： A magnetic hard disk substrate is produced by rotating an aluminum substrate or a glass substrate, supplying polishing slurry on its surface, pressing a polishing tape on the surface and running it in a direction opposite to the direction of rotation of the substrate. Texturing marks are formed with a line density greater than 70 lines/μm in the radial direction on the surface. The polishing slurry has abrading particles dispersed in a dispersant. The abrading particles may be monocrystalline diamond particles, polycrystalline diamond particles or cluster particles with such monocrystalline and polycrystalline diamond particles with diameters in the range of 1-50 nm. Agglomerated particles of such cluster particles that are agglomerated in the dispersant may also be included as the abrading particles.

摘要翻译： 通过旋转铝基板或玻璃基板，在其表面上供给研磨浆料，在表面上按压研磨带并沿与基板的旋转方向相反的方向进行驱动来制造磁性硬盘基板。 纹理标记形成在表面上沿径向方向的线密度大于70线/毫米。 抛光浆料具有分散在分散剂中的研磨颗粒。 研磨颗粒可以是单晶金刚石颗粒，多晶金刚石颗粒或具有直径在1-50nm范围内的单晶和多晶金刚石颗粒的簇颗粒。 在分散剂中聚集的这种团簇颗粒的聚集颗粒也可以作为研磨颗粒。

公开(公告)号：US06974368B2

公开(公告)日：2005-12-13

申请号：US10776372

申请日：2004-02-10

申请人： Yuji Horie ,  Hiromitsu Okuyama ,  Tatsuya Tanifuji

发明人： Yuji Horie ,  Hiromitsu Okuyama ,  Tatsuya Tanifuji

IPC分类号： B24B21/00 ,  B24B37/00 ,  B24B37/20 ,  B24B37/24 ,  C03C19/00 ,  C09K3/14 ,  G11B5/73 ,  G11B5/82 ,  G11B5/84 ,  B24B1/10

CPC分类号： G11B5/7315 ,  B24B37/042 ,  C03C19/00 ,  C03C2204/08 ,  G11B5/82 ,  G11B5/8404

摘要： A magnetic hard disk substrate is produced by rotating an aluminum substrate or a glass substrate, supplying polishing slurry on its surface, pressing a polishing tape on the surface and running it in a direction opposite to the direction of rotation of the substrate. Texturing marks are formed with a line density greater than 70 lines/μm in the radial direction on the surface. The polishing slurry has abrading particles dispersed in a dispersant. The abrading particles may be monocrystalline diamond particles, polycrystalline diamond particles or cluster particles with such monocrystalline and polycrystalline diamond particles with diameters in the range of 1-50 nm. Agglomerated particles of such cluster particles that are agglomerated in the dispersant may also be included as the abrading particles.

摘要翻译： 通过旋转铝基板或玻璃基板，在其表面上供给研磨浆料，在表面上按压研磨带并沿与基板的旋转方向相反的方向进行驱动来制造磁性硬盘基板。 纹理标记形成在表面上沿径向方向的线密度大于70线/毫米。 抛光浆料具有分散在分散剂中的研磨颗粒。 研磨颗粒可以是单晶金刚石颗粒，多晶金刚石颗粒或具有直径在1-50nm范围内的单晶和多晶金刚石颗粒的簇颗粒。 在分散剂中聚集的这种团簇颗粒的聚集颗粒也可以作为研磨颗粒。

公开(公告)号：US20080000878A1

公开(公告)日：2008-01-03

申请号：US11809728

申请日：2007-05-31

申请人： Yuji Horie ,  Hiromitsu Okuyama ,  Tatsuya Tanifuji

发明人： Yuji Horie ,  Hiromitsu Okuyama ,  Tatsuya Tanifuji

IPC分类号： B44C1/22

CPC分类号： C09G1/02 ,  G11B5/8404

摘要： A method of texturing a surface of a magnetic hard disk substrate includes the steps of rotating the magnetic hard disk substrate, supplying polishing slurry on the surface of the substrate, and pressing a polishing tape on the substrate surface and running the polishing tape. The polishing slurry includes abrading particles of monocrystalline diamond that are cluster particles with corners having diameters in the range of 1-10 nm, dispersed in a dispersant such as water and a water-based aqueous solution. The cluster particles are tasseled assemblies of crystalline particles with no directionality.

摘要翻译： 对磁性硬盘基板的表面进行纹理化的方法包括以下步骤：旋转磁性硬盘基板，在基板的表面上提供研磨浆料，并将研磨带压在基板表面上并运行研磨带。 抛光浆料包括分散在分散剂如水和水基水溶液中的直径在1-10nm范围内的具有角度的簇粒子的单晶金刚石研磨颗粒。 簇颗粒是没有方向性的结晶颗粒的流苏组件。

公开(公告)号：US07790046B2

公开(公告)日：2010-09-07

申请号：US11809728

申请日：2007-05-31

申请人： Yuji Horie ,  Hiromitsu Okuyama ,  Tatsuya Tanifuji

发明人： Yuji Horie ,  Hiromitsu Okuyama ,  Tatsuya Tanifuji

IPC分类号： B44C1/22 ,  C03C15/00

CPC分类号： C09G1/02 ,  G11B5/8404

摘要： A method of texturing a surface of a magnetic hard disk substrate includes the steps of rotating the magnetic hard disk substrate, supplying polishing slurry on the surface of the substrate, and pressing a polishing tape on the substrate surface and running the polishing tape. The polishing slurry includes abrading particles of monocrystalline diamond that are cluster particles with corners having diameters in the range of 1-10 nm, dispersed in a dispersant such as water and a water-based aqueous solution. The cluster particles are tasseled assemblies of crystalline particles with no directionality.

摘要翻译： 对磁性硬盘基板的表面进行纹理化的方法包括以下步骤：旋转磁性硬盘基板，在基板的表面上提供研磨浆料，并将研磨带压在基板表面上并运行研磨带。 抛光浆料包括分散在分散剂如水和水基水溶液中的直径在1-10nm范围内的具有角度的簇粒子的单晶金刚石研磨颗粒。 簇颗粒是没有方向性的结晶颗粒的流苏组件。

公开(公告)号：US20060003092A1

公开(公告)日：2006-01-05

申请号：US11223393

申请日：2005-09-08

申请人： Yuji Horie ,  Hiromitsu Okuyama ,  Tatsuya Tanifuji

发明人： Yuji Horie ,  Hiromitsu Okuyama ,  Tatsuya Tanifuji

IPC分类号： B05D5/12 ,  B05D3/12 ,  B24D3/02

CPC分类号： B24B21/04 ,  B24B19/028 ,  B24B37/042 ,  C03C19/00 ,  G11B5/8404

摘要： Texturing line marks are formed clearly and uniformly over a surface of a glass substrate for a magnetic hard disk such that there will be no abnormal protrusions exceeding 100 Å and the line density will be 30 lines/μm or more by rotating the glass substrate, supplying slurry on the surface of the glass substrate and pressing a processing tape on the surface of the glass substrate and running the processing tape. The slurry includes abrading particles of an artificial diamond material produced by a shock method and dispersed in a dispersing medium. The abrading particles include primary particles that are artificial diamond particles with average diameter 1 nm-20 nm and cluster particles with secondary particles that are artificial diamond particles with average diameter 0.05 μm-0.20 μm. The dispersing medium of the slurry includes water and an additive that contains higher aliphatic amide and two or more selected from the group consisting of glycol compounds, organic phosphates and surfactants.

摘要翻译： 在用于磁性硬盘的玻璃基板的表面上，纹理线标记被清楚均匀地形成，使得不会有超过100的异常突起，并且通过旋转玻璃基板，线密度将为30线/毫米或更大 在玻璃基板的表面上的浆料，并且在玻璃基板的表面上按压处理带并运行处理带。 浆料包括通过冲击法制造并分散在分散介质中的人造金刚石材料的研磨颗粒。 研磨颗粒包括平均直径为1nm-20nm的人造金刚石颗粒的初级颗粒和具有平均直径为0.05m2至0.20μm的人造金刚石颗粒的二次颗粒的颗粒。 浆料的分散介质包括水和含有高级脂族酰胺和选自二醇化合物，有机磷酸盐和表面活性剂中的两种或更多种的添加剂。