公开(公告)号：US06833175B2

公开(公告)日：2004-12-21

申请号：US10097152

申请日：2002-03-13

申请人： Susumu Yoshida ,  Hideyuki Akimoto ,  Masaya Suzuki

发明人： Susumu Yoshida ,  Hideyuki Akimoto ,  Masaya Suzuki

IPC分类号： G11B582

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

摘要： A glass substrate for a magnetic recording medium has a textured surface having numerous grooves extending in the circumferential direction of the glass substrate. The average roughness of the textured surface is 0.4 nm or less. The number of the grooves is 15 or more per micrometer. The average depth of the grooves is 2 nm or less. The grooves are formed by mechanical texturing using a texturing liquid applied between a texturing tape and the surface of a blank glass substrate rotating. The texturing liquid is an aqueous dispersion of fine diamond abrasive grains.

摘要翻译： 用于磁记录介质的玻璃基板具有沿着玻璃基板的圆周方向延伸的许多凹槽的织纹表面。 纹理表面的平均粗糙度为0.4nm以下。 槽的数量为每微米15个以上。 槽的平均深度为2nm以下。 通过使用施加在变形带和旋转的坯料玻璃基板的表面之间的纹理液体的机械纹理来形成凹槽。 纹理液是精细金刚石磨粒的水分散体。

公开(公告)号：US06801396B1

公开(公告)日：2004-10-05

申请号：US08964686

申请日：1997-11-05

申请人： Brent Ray Den Hartog ,  Dennis Leonard Fox ,  James Aloysius Hagan ,  John Chen Shen ,  Kannimangalam Venkatasubramanyam Viswanathan

发明人： Brent Ray Den Hartog ,  Dennis Leonard Fox ,  James Aloysius Hagan ,  John Chen Shen ,  Kannimangalam Venkatasubramanyam Viswanathan

IPC分类号： G11B582

CPC分类号： G11B5/84 ,  Y10S977/863 ,  Y10S977/881 ,  Y10S977/888 ,  Y10S977/895

摘要： The present invention utilizes a combination of chemical and mechanical finishing processes to polish a disk substrate surface to near atomic smoothness. Broadly speaking, the surface of a disk substrate that has been machined (i.e., rough ground) to a predetermined surface roughness is subjected to attack by a chemical formulation (called an attacking agent). The chemical formulation is used to soften the substrate material. Then, the softened material is “wiped away” via mechanical action.

摘要翻译： 本发明利用化学和机械精加工的组合来将盘基片表面抛光至近原子光滑度。 一般来说，已经被加工（即粗糙研磨）到预定表面粗糙度的盘基片的表面受到化学制剂（称为攻击剂）的攻击。 化学制剂用于软化基材。 然后，软化的材料通过机械作用“擦去”。

公开(公告)号：US06624976B2

公开(公告)日：2003-09-23

申请号：US10090502

申请日：2002-03-04

申请人： Hiroshi Takino

发明人： Hiroshi Takino

IPC分类号： G11B582

CPC分类号： G11B17/043 ,  G11B5/012 ,  G11B5/82 ,  G11B17/0436 ,  G11B19/12 ,  G11B23/0302 ,  G11B23/0307 ,  G11B23/0308

摘要： A magnetic disc rotates causing an air flow that produces a floating force head unit which undergoes floating force by air flow produced as the result of the fact that the magnetic disc is rotated serves to selectively carry out loading of a first disc cartridge within which there is accommodated a first magnetic disc adapted so that flat recording tracks are provided at a disc substrate formed by molding synthetic resin and a magnetic layer is provided in a manner to cover the recording tracks, and a second disc cartridge within which there is accommodated a second magnetic disc adapted so that information uneven pit trains are formed at a disc substrate formed by molding synthetic resin and a magnetic layer is formed in a manner to include bottom surfaces and upper surfaces of information uneven pit trains, the magnetic layer being magnetized in the state where magnetization direction of the magnetic layer portions on the bottom surfaces and that of the magnetic layer portions of the upper surfaces of information pit trains are different from each other so that information such as program, etc. are recorded. Thus, new program can be installed into computer only by exchange of the disc cartridge.

摘要翻译： 磁盘旋转，导致产生浮力头单元的空气流，该浮力头单元由于产生的空气流而产生浮动力，因为磁盘被旋转的事实用于选择性地执行其中存在的第一盒式磁盘的装载 容纳第一磁盘，其适于使得平面记录轨道设置在通过模制合成树脂形成的盘基片上，并且以覆盖记录轨道的方式设置磁性层，以及第二盒式磁盘，其中容纳有第二磁性 盘，使得在通过模制合成树脂形成的盘基片上形成信息不均匀凹坑列，并且以包括信息不均匀凹坑列的底表面和上表面的方式形成磁性层，磁层在如下状态下被磁化： 底面上的磁性层部分的磁化方向和磁性层部分的磁性层部分的磁化方向 信息坑列的上表面彼此不同，从而记录诸如节目等的信息。 因此，只有通过更换光盘盒才能将新程序安装到计算机中。

公开(公告)号：US06602570B1

公开(公告)日：2003-08-05

申请号：US09781976

申请日：2001-02-14

申请人： Xiaoding Ma ,  Raj Thangaraj ,  Huan Tang ,  Michael J. Stirniman

发明人： Xiaoding Ma ,  Raj Thangaraj ,  Huan Tang ,  Michael J. Stirniman

IPC分类号： G11B582

CPC分类号： G11B5/82 ,  G11B5/725

摘要： A magnetic recording medium with low bonded lubricant at the landing zone, where the head takes off and lands, for better wear resistance, and with high bonded lubricant at the data zone to protect the data from corrosion, and a method of making the same are disclosed.

摘要翻译： 在着陆区具有低粘结润滑剂的磁记录介质，其中头部脱落并着陆以获得更好的耐磨性，并且在数据区具有高粘合润滑剂，以保护数据免受腐蚀，并且其制备方法 披露

公开(公告)号：US06584067B2

公开(公告)日：2003-06-24

申请号：US09796792

申请日：2001-03-02

申请人： Noriaki Oshima ,  Hideki Oono ,  Keiichiro Nishizawa

发明人： Noriaki Oshima ,  Hideki Oono ,  Keiichiro Nishizawa

IPC分类号： G11B582

CPC分类号： B82Y10/00 ,  G11B7/007 ,  G11B7/121 ,  G11B7/122 ,  G11B7/24097 ,  G11B7/26 ,  G11B23/0035

摘要： An optical recording medium wherein a land and a groove are formed in both front and rear surfaces of a circular disk-like substrate respectively, at least a recording layer and a dielectric layer are formed on the surfaces of the substrate, and a hub is provided in only one of the surfaces and recording/reproducing are conducted by using a flying optical head, the optical recording medium being characterized in that in a state that the medium is supported by the hub so that the hub-attached surface directs downward, and in a region from the innermost periphery to L/3, where L is a distance from the innermost periphery to the outermost periphery of a recording/reproducing area, the center of curvature in a radial direction of that region exists at an opposite side with respect to the hub-attached surface of the optical recording medium, whereby the optical recording medium of high reliability wherein the distance between the flying optical head floating above the surface of the recording medium and the surface of the recording medium can be kept constant; uniform recording/reproducing signals can be obtained, and head crushing seldom occurs.

摘要翻译： 一种光盘记录介质，其中在圆盘状基板的前表面和后表面分别形成有焊盘和凹槽，至少记录层和电介质层形成在基板的表面上，并且设置有集线器 在只有一个表面和记录/再现通过使用飞行光学头进行的情况下，光学记录介质的特征在于，在介质由轮毂支撑使得轮毂附接表面向下引导的状态下 从最内周到L / 3的区域，其中L是从记录/再现区域的最内周到最外周的距离，该区域的径向方向上的曲率中心相对于 光记录介质的轮毂安装表面，由此可靠的光学记录介质，其中浮动光学头在记录表面之上的距离 并且记录介质的表面可以保持恒定; 可以获得均匀的记录/再现信号，并且很少发生头部破碎。

公开(公告)号：US06583958B1

公开(公告)日：2003-06-24

申请号：US09654307

申请日：2000-09-01

申请人： Hiroyuki Suzuki ,  Yuzuru Hosoe ,  Kiwamu Tanahashi

发明人： Hiroyuki Suzuki ,  Yuzuru Hosoe ,  Kiwamu Tanahashi

IPC分类号： G11B582

CPC分类号： G11B5/656 ,  G11B5/00 ,  G11B2005/0002 ,  G11B2005/001

摘要： Provided are a low-noise, high-performance magnetic recording medium obtained by fining the size of the grains in a magnetic film, and a magnetic recording medium of low thermal demagnetization obtained by controlling the magnetic grain size in a small range. Simultaneously provided is a large-capacity magnetic storage system capable of high-density recording with a recording density exceeding 20 Gb/inch2. In a magnetic recording medium in which a magnetic layer is formed on a substrate via an underlayer, the magnetic layer is formed of an alloy containing cobalt as the main constituents and containing boron, chromium and germanium or containing phosphorus, chromium and germanium as additives of the alloy.

摘要翻译： 提供了通过使磁性膜中的晶粒尺寸变细而获得的低噪声，高性能的磁记录介质，以及通过将磁性粒径控制在小范围内而获得的低热退磁的磁记录介质。 同时提供能够以超过20Gb /英寸2的记录密度进行高密度记录的大容量磁存储系统。 在其中通过底层在基板上形成磁性层的磁记录介质中，磁性层由含有钴作为主要成分的合金形成并含有硼，铬和锗或含有磷，铬和锗作为添加剂的添加剂 合金。

公开(公告)号：US06320728B1

公开(公告)日：2001-11-20

申请号：US09311358

申请日：1999-05-13

申请人： Jialuo Jack Xuan ,  Xiaohua Shel Yang ,  Chung-Yuang Shih ,  Taesun E. Kim

发明人： Jialuo Jack Xuan ,  Xiaohua Shel Yang ,  Chung-Yuang Shih ,  Taesun E. Kim

IPC分类号： G11B582

CPC分类号： G11B5/82 ,  B23K26/0823

摘要： A magnetic data storage medium is provided that has a substrate surface with regularly spaced, continuous ridges and grooves thereby to enhance the magnetic layer crystallization orientation. Data storage tracks extend longitudinally along the ridges, the grooves between adjacent ridges providing separation between data tracks on either side of each ridge. To form the substrate surface a focused laser beam is continuously applied to the substrate in a path of generally circumferential direction on the disk surface between inner and outer radii of a data storage zone while the substrate is rotated at a relatively constant first speed and the focused beam is moved radially at a relatively constant second speed.

摘要翻译： 提供磁数据存储介质，其具有具有规则间隔的连续脊和凹槽的基板表面，从而增强磁层结晶取向。 数据存储轨道沿着脊部纵向延伸，相邻脊之间的沟槽提供每个脊的任一侧的数据轨道之间的间隔。 为了形成衬底表面，聚焦的激光束在数据存储区的内半径和外半径之间的盘表面的大致圆周方向的路径上连续地施加到衬底，同时衬底以相对恒定的第一速度旋转，并且聚焦 光束以相对恒定的第二速度径向移动。

公开(公告)号：US06270876B1

公开(公告)日：2001-08-07

申请号：US09435762

申请日：1999-11-08

申请人： Masahiro Abe ,  Takahiro Takahashi

发明人： Masahiro Abe ,  Takahiro Takahashi

IPC分类号： G11B582

CPC分类号： G11B5/7315 ,  C03C10/0027 ,  Y10T428/24355

摘要： A crystallized glass has a main crystal phase of &agr;-quartz (SiO2) and lithium disilicate (Li2·2SiO2) and has a thermal expansion coefficient of (90˜130)×10−7/K at −50° C.˜70° C. The crystallized glass mentioned above, has a following chemical composition; 70 wt %≦SiO2≦80 wt %, 5 wt %≦Al2O3≦9 wt %, 7 wt %≦Li2O≦10 wt %, 1 wt %≦P2O5≦3 wt %, 0 wt %≦K2O≦3 wt %, 0 wt %≦CaO≦3 wt %, 0 wt %≦BaO≦4 wt %, 0 wt %≦ZnO≦4 wt %, 0 wt %≦Sb2O3≦1 wt %, 0 wt %≦ZrO2≦6 wt %, 0 wt %≦Nb2O5≦6 wt %, 0 wt %≦SnO2≦4 wt %, 0 wt %≦MoO3≦3 wt %, 0.7 wt %≦(Nb2O5+SnO2+MoO3)≦6 wt %.

摘要翻译： 结晶玻璃具有α-石英（SiO2）和二硅酸锂（Li2.2SiO2）的主晶相，并且在-50℃〜70℃具有（90〜130）×10-7 / K的热膨胀系数 上述结晶化玻璃具有以下化学成分; 70重量％<= SiO 2≤80重量％，5重量％<= Al 2 O 3 <= 9重量％，7重量％<= Li 2 O = 10重量％，1重量％<= P 2 O 5≤3重量％ 0重量％<= 3重量％，0重量％<= CaO <= 3重量％，0重量％≤BaO <= 4重量％，0重量％<= ZnO <= 4重量％ = Sb 2 O 3 <= 1重量％，0重量％<= ZrO 2≤6重量％，0重量％≤Nb2 O 5≤6重量％0重量％SnO 2≤4重量％0重量％MoO 3 <= 3重量％，0.7重量％<=（Nb 2 O 5 + SnO 2 + MoO 3）≤6重量％。

公开(公告)号：US06268979B1

公开(公告)日：2001-07-31

申请号：US09261827

申请日：1999-03-03

申请人： Yasunao Kuroda

发明人： Yasunao Kuroda

IPC分类号： G11B582

CPC分类号： G11B5/82 ,  C03C17/36 ,  C03C17/3649 ,  C03C17/40 ,  C03C21/002 ,  C03C23/0025 ,  C03C2217/77 ,  C03C2217/78 ,  C03C2218/32 ,  G11B5/7325

摘要： A magnetic recording medium includes a substrate, a data region and a CSS region on a surface of the substrate. Information is recorded in the data region, and a magnetic head is held stationary in the CSS region. A thin film texture is fabricated in the data region by sputtering, and a laser texture is fabricated in the CSS region by laser irradiation. The laser texture includes a plurality of first projections. The thin film texture includes a plurality of second projections. The second projections are lower in height than the first projections.

摘要翻译： 磁记录介质包括基板表面上的基板，数据区和CSS区。 信息被记录在数据区域中，磁头在CSS区域中保持静止。 通过溅射在数据区域中制造薄膜纹理，并且通过激光照射在CSS区域中制造激光纹理。 激光纹理包括多个第一突起。 薄膜纹理包括多个第二突起。 第二个突出部分的高度比第一个投影高。

公开(公告)号：US06191921B1

公开(公告)日：2001-02-20

申请号：US09494104

申请日：2000-01-28

申请人： Kevin Hanrahan ,  Ryan Schmidt

发明人： Kevin Hanrahan ,  Ryan Schmidt

IPC分类号： G11B582

CPC分类号： C21D8/0447 ,  C21D2221/00 ,  Y10S148/902

摘要： A base plate for a suspension assembly in a hard disk drive wherein the base plate has a hardened flange and soft hub. The base plate is stamped in a progressive die in a sequence of forging and coining operations. The base plate is subsequently fully annealed to allow the material to yield at a low stress level so that the hub will create a press fit against the inner wall of an actuator arm boss hole. The base plate is passed through a secondary coining operation following the annealing step to work-harden the flange portion only. The result is a base plate with a flange portion that is hardened and a hub portion that is softer than the flange portion. The advantage is that the hardened flange is more resistant to deformation of a load beam welded thereto and the hub is more disposed to plastically deform and harden during swaging which is desirable for maintaining a press fit.

摘要翻译： 一种用于硬盘驱动器中的悬挂组件的基板，其中所述基板具有硬化凸缘和柔性毂。 基板以锻造和压印操作的顺序冲压在渐进式模具中。 基板随后完全退火，以允许材料在低应力水平下屈服，使得毂将产生压配合到致动器臂凸台孔的内壁上。 在退火步骤之后，基板通过二次压印操作，以仅对凸缘部分进行加工硬化。 结果是具有硬化的凸缘部分和比凸缘部分更柔软的毂部的基板。 优点在于，硬化的凸缘更能抵抗焊接在其上的负载梁的变形，并且毂更多地设置成在型锻期间塑性变形和硬化，这对于保持压配合是理想的。