公开(公告)号：US06821627B2

公开(公告)日：2004-11-23

申请号：US10714854

申请日：2003-11-18

申请人： Michael Stirniman ,  Li-Ping Wang ,  Gary Rauch

发明人： Michael Stirniman ,  Li-Ping Wang ,  Gary Rauch

IPC分类号： G11B5725

CPC分类号： G11B5/725 ,  G11B5/8408

摘要： A magnetic recording medium is formed with a distribution of servo-marks in the form of pits or indentations with an attendant reduction in potential corrosion and increased tribology. Embodiments providing a protective overcoat, e.g. containing carbon, over a magnetic recording medium having a servo-patterned substrate; applying a fluoropolyether comprising one or more acrylate groups on the protective overcoat by dip coating the magnetic recording medium in a solution of the fluoropolyether and polymerizing the fluoropolyether by ultraviolet radiation.

公开(公告)号：US06749904B1

公开(公告)日：2004-06-15

申请号：US10138265

申请日：2002-05-06

申请人： Connie Chunling Liu ,  Li-Ping Wang ,  Linda Lijun Zhong ,  Jeffery Lee Petrehn

发明人： Connie Chunling Liu ,  Li-Ping Wang ,  Linda Lijun Zhong ,  Jeffery Lee Petrehn

IPC分类号： B05D300

CPC分类号： G11B5/74 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/82 ,  G11B5/855 ,  Y10T428/12014 ,  Y10T428/12104 ,  Y10T428/12465 ,  Y10T428/12646 ,  Y10T428/12861 ,  Y10T428/24479 ,  Y10T428/26 ,  Y10T428/31

摘要： High areal storage density, patterned magnetic media comprising a patterned plurality of at least partially crystalline, ferromagnetic particles or grains are provided by means of a simple, economical process wherein a non-magnetic substrate is provided with a layer of an amorphous, paramagnetic or anti-paramagnetic material comprising at least one component, e.g., a metal element, which is ferromagnetic when in at least partially crystalline form, and at least partially crystallizing the at least one component at selected areas of the amorphous layer to form a spaced-apart pattern of at least partially crystallized, ferromagnetic particles or grains of the at least one component, the particles or grains being spaced apart and surrounded by a matrix of the amorphous material. Embodiments include utilizing a focussed or scanned laser source and an amorphous Ni—P layer for forming ferromagnetic Ni particles or grains.

摘要翻译： 通过简单，经济的方法提供包括图案化的多个至少部分结晶的铁磁性颗粒或颗粒的图案化磁性介质，其中非磁性衬底具有无定形，顺磁性或抗反射层 对抗磁性材料，其包含至少一种组分，例如金属元素，其在至少部分结晶形式时是铁磁性的，并且至少部分地使非晶层的选定区域处的至少一种组分结晶，以形成间隔开的图案 的至少部分结晶的铁磁性颗粒或至少一种组分的晶粒​​，所述颗粒或颗粒间隔开并被无定形材料的基质包围。 实施例包括利用聚焦或扫描的激光源和非晶Ni-P层来形成铁磁性Ni颗粒或颗粒。

公开(公告)号：US06387530B1

公开(公告)日：2002-05-14

申请号：US09593243

申请日：2000-06-14

申请人： Connie Chunling Liu ,  Li-Ping Wang ,  Linda Lijun Zhong ,  Jeffery Lee Petrehn

发明人： Connie Chunling Liu ,  Li-Ping Wang ,  Linda Lijun Zhong ,  Jeffery Lee Petrehn

IPC分类号： B32B1500

CPC分类号： G11B5/74 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/82 ,  G11B5/855 ,  Y10T428/12014 ,  Y10T428/12104 ,  Y10T428/12465 ,  Y10T428/12646 ,  Y10T428/12861 ,  Y10T428/24479 ,  Y10T428/26 ,  Y10T428/31

摘要： High areal storage density, patterned magnetic media comprising a patterned plurality of at least partially crystalline, ferromagnetic particles or grains are provided by means of a simple, economical process wherein a non-magnetic substrate is provided with a layer of an amorphous, paramagnetic or anti-paramagnetic material comprising at least one component, e.g., a metal element, which is ferromagnetic when in at least partially crystalline form, and at least partially crystallizing the at least one component at selected areas of the amorphous layer to form a spaced-apart pattern of at least partially crystallized, ferromagnetic particles or grains of the at least one component, the particles or grains being spaced apart and surrounded by a matrix of the amorphous material. Embodiments include utilizing a focussed or scanned laser source and an amorphous Ni—P layer for forming ferromagnetic Ni particles or grains.

摘要翻译： 通过简单，经济的方法提供包括图案化的多个至少部分结晶的铁磁性颗粒或颗粒的图案化磁性介质，其中非磁性衬底具有无定形，顺磁性或抗反射层 对抗磁性材料，其包含至少一种组分，例如金属元素，其在至少部分结晶形式时是铁磁性的，并且至少部分地使非晶层的选定区域处的至少一种组分结晶，以形成间隔开的图案 的至少部分结晶的铁磁性颗粒或至少一种组分的晶粒​​，所述颗粒或颗粒间隔开并被无定形材料的基质包围。 实施例包括利用聚焦或扫描的激光源和非晶Ni-P层来形成铁磁性Ni颗粒或颗粒。

公开(公告)号：US07113882B2

公开(公告)日：2006-09-26

申请号：US10753435

申请日：2004-01-09

申请人： Ken-Ho Liu ,  Li-Ping Wang ,  Chang-Gen Mao ,  Hua-Liang Zhang

发明人： Ken-Ho Liu ,  Li-Ping Wang ,  Chang-Gen Mao ,  Hua-Liang Zhang

IPC分类号： G06F19/00

CPC分类号： G01R31/40 ,  G01R31/025

摘要： An automatic testing system. A sampling and converting device obtains a plurality of electronic parameters from a tested device and transforms them into a plurality of digital signals. A microprocessor receives the digital signals and performs various short-circuit tests, over-current tests and over-voltage tests in a specific sequence.

摘要翻译： 自动测试系统 采样和转换装置从测试装置获得多个电子参数，并将其转换成多个数字信号。 微处理器接收数字信号，并以特定顺序执行各种短路测试，过流测试和过压测试。

公开(公告)号：US20060196625A1

公开(公告)日：2006-09-07

申请号：US11358100

申请日：2006-02-22

申请人： Li-Ping Wang ,  David Kuo ,  Jing Gui ,  Koichi Wago

发明人： Li-Ping Wang ,  David Kuo ,  Jing Gui ,  Koichi Wago

IPC分类号： B22D11/06

CPC分类号： G11B5/865 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/855 ,  G11B11/10578 ,  G11B11/10582 ,  H01F41/32

摘要： A high field contrast magnetic stamper/imprinter for use in patterning of magnetic and magneto-optical (MO) recording media by contact printing, comprises: (a) a layer of a magnetic material having a high saturation magnetization Bsat≧˜1.2 and high permeability μ≧˜5, including a first, topographically patterned surface and a second surface opposite the first surface, the first, topographically patterned surface comprising a patterned plurality of spaced-apart recesses with a plurality of non-recessed areas therebetween, the topographical pattern corresponding to a magnetic pattern to be formed in a magnetic or MO recording medium; and (b) a layer of Ni on the second surface. A corrosion-resistant protective overcoat layer may be present on the topographically patterned surface. A method for manufacturing the stamper/imprinter is also disclosed.

公开(公告)号：US06879458B2

公开(公告)日：2005-04-12

申请号：US10304924

申请日：2002-11-26

申请人： Alexei H. Sacks ,  Li-Ping Wang ,  Donald E. Curtiss

发明人： Alexei H. Sacks ,  Li-Ping Wang ,  Donald E. Curtiss

IPC分类号： G11B5/00 ,  G11B5/55 ,  G11B5/596 ,  G11B21/02

CPC分类号： G11B5/00 ,  G11B5/5534 ,  G11B5/59633

摘要： A method for thermally writing a magnetic servo pattern on a magnetic disc medium prior to assembling the medium in a disc drive is provided in which the medium is first magnetized in a uniform magnetization direction. A plurality of magnetic domains are then thermally written on the medium, one magnetic domain at a time, by individually heating each magnetic domain with a light beam while exposing the magnetic domain to a magnetic field. The magnetic field has an orientation that is opposite to the uniform magnetization direction. The light beam forms an illumination pattern on the medium having a shape that at least partially defines a boundary of each magnetic domain.

摘要翻译： 提供了在将介质组装在盘驱动器中之前将磁性伺服图形热写入磁盘介质上的方法，其中介质首先以均匀的磁化方向被磁化。 然后通过在将磁畴暴露于磁场的同时用光束单独加热每个磁畴，将多个磁畴一次热写入介质一个磁畴。 磁场具有与均匀磁化方向相反的取向。 光束在具有至少部分地限定每个磁畴的边界的形状的介质上形成照明图案。

公开(公告)号：US06781785B2

公开(公告)日：2004-08-24

申请号：US09726965

申请日：2000-11-29

申请人： Karl A. Belser ,  Li-Ping Wang ,  Terry W. McDaniel

发明人： Karl A. Belser ,  Li-Ping Wang ,  Terry W. McDaniel

IPC分类号： G11B5596

CPC分类号： G11B5/59627 ,  G11B5/59677 ,  G11B5/59688 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/0021

摘要： Marks with curved edges are used in data patterns and sensed with proximity recording. Circular, elliptical, and oval marks are examples of marks with curved edges that can be used in the present invention. The marks with curved edges are used to define data patterns (e.g. position error signal patterns) as a function of radius. If the marks with curved edges have been recorded longitudinally, an amplitude of a read back signal, such as a peak amplitude, is determined in order to generate a position error signal. If the marks with curved edges have been recorded vertically, an area under the curve of the read back signal is determined in order to generate a position error signal.

摘要翻译： 具有弯曲边缘的标记用于数据模式并用近距离记录感测。 圆形，椭圆形和椭圆形标记是可用于本发明的具有弯曲边缘的标记的示例。 具有弯曲边缘的标记用于定义作为半径的函数的数据模式（例如位置误差信号模式）。 如果已经纵向记录具有弯曲边缘的标记，则确定诸如峰值振幅的回读信号的幅度，以便产生位置误差信号。 如果已经垂直记录了具有弯曲边缘的标记，则确定回读信号的曲线下方的区域以产生位置误差信号。

公开(公告)号：US06490117B1

公开(公告)日：2002-12-03

申请号：US09425768

申请日：1999-10-22

申请人： Alexei H. Sacks ,  Li-Ping Wang ,  Donald E. Curtiss

发明人： Alexei H. Sacks ,  Li-Ping Wang ,  Donald E. Curtiss

IPC分类号： G11B2102

CPC分类号： G11B5/00 ,  G11B5/5534 ,  G11B5/59633

摘要： A method and apparatus for thermally writing a magnetic servo pattern on a magnetic disc medium prior to assembling the medium in a disc drive are provided in which the medium is first magnetized in a uniform magnetization direction. A plurality of magnetic domains are then thermally written on the medium, one magnetic domain at a time, by individually heating each magnetic domain with a light beam while exposing the magnetic domain to a magnetic field. The magnetic field has an orientation that is opposite to the uniform magnetization direction. The light beam forms an illumination pattern on the medium having a shape that at least partially defines a boundary of each magnetic domain.

摘要翻译： 提供了在将介质组装在盘驱动器中之前将磁性伺服图形热写入磁盘介质上的方法和装置，其中介质首先以均匀的磁化方向被磁化。 然后通过在将磁畴暴露于磁场的同时用光束单独加热每个磁畴，将多个磁畴一次热写入介质一个磁畴。 磁场具有与均匀磁化方向相反的取向。 光束在具有至少部分地限定每个磁畴的边界的形状的介质上形成照明图案。

公开(公告)号：US06483299B1

公开(公告)日：2002-11-19

申请号：US09708491

申请日：2000-11-09

申请人： Jason L. Pressesky ,  Hans Jürgen Richter ,  Li-Ping Wang

发明人： Jason L. Pressesky ,  Hans Jürgen Richter ,  Li-Ping Wang

IPC分类号： G01R3312

CPC分类号： G11B27/36 ,  G01R33/1207 ,  G11B5/00 ,  G11B33/14 ,  G11B2005/001 ,  G11B2220/20

摘要： An apparatus and a method for measuring the magnetic properties of recording media. Particularly, the invention is directed to the measurement of the coercivity of recording media having high coercivity values. The apparatus for measuring the magnetic properties of recording media contains a thermal source to increase the temperature of a selected portion of the recording media, thus temporally decreasing the coercivity of the recording media in the selected portion. Magnetic transitions are induced by applying a magnetic field to the regions of the medium affected by the thermal source. The electromagnet applies an incrementally increasing DC field to the selected portion to generate variable magnetization data.

摘要翻译： 一种用于测量记录介质的磁特性的装置和方法。 特别地，本发明涉及具有高矫顽力值的记录介质的矫顽力的测量。 用于测量记录介质的磁特性的装置包含一个热源，以增加记录介质的选定部分的温度，从而暂时降低所选部分中的记录介质的矫顽力。 通过对受热源影响的介质的区域施加磁场来诱导磁转变。 电磁体对所选择的部分施加递增增加的DC场，以产生可变磁化数据。

公开(公告)号：US20070231472A1

公开(公告)日：2007-10-04

申请号：US11761909

申请日：2007-06-12

申请人： Jianwei Liu ,  Michael Stirniman ,  Li-Ping Wang

发明人： Jianwei Liu ,  Michael Stirniman ,  Li-Ping Wang

IPC分类号： C23C14/28 ,  B05D1/40

CPC分类号： C23C14/0605 ,  C23C14/025 ,  C23C14/221 ,  C23C14/5846 ,  G11B5/722 ,  G11B5/82

摘要： A system and method for corrosion problems in magnetic media resulting from moisture penetrating through the carbon layer into the magnetic layer by diffusion or other methods are overcome by processing the carbon overcoat to stop and/or inhibit the moisture penetration. The process involves removing moisture channels from protective overcoats of thin film magnetic media by irradiating the protective overcoat with ultraviolet (UV) radiation in an inert hydrophobic chemical environment. Afterwards, the thin film magnetic media can be removed into ambient atmosphere where it is coated with a lubricant.

摘要翻译： 通过加工碳外涂层以阻止和/或抑制水分渗透来克服通过扩散或其它方法通过碳层渗透到磁性层中的水分导致的磁性介质中的腐蚀问题的系统和方法。 该过程涉及通过在惰性疏水化学环境中用紫外线（UV）辐射照射保护性外涂层来从薄膜磁性介质的保护性外涂层去除水分通道。 之后，可以将薄膜磁性介质移除到环境气氛中，在其中涂覆润滑剂。