公开(公告)号：US5155372A

公开(公告)日：1992-10-13

申请号：US797877

申请日：1991-11-26

申请人： Arlen J. Bowen ,  David L. Erickson ,  Daniel W. Jewell ,  Venkat R. Koka

发明人： Arlen J. Bowen ,  David L. Erickson ,  Daniel W. Jewell ,  Venkat R. Koka

IPC分类号： G02B27/46 ,  G01N21/93 ,  G01N21/94 ,  G01N21/95 ,  G01N21/956

CPC分类号： G01N21/95623

摘要： The present invention includes a system for monitoring surface structures on a planar surface utilizing a radiation source emitting a beam. The planar surface has various surface structure types, including a plurality of grooves therein which intersect at various angles which are equal to or less than a predetermined maximum angle. The system includes an apparatus for directing the beam to the planar surface along an optical axis perpendicular to the planar surface resulting in radiation being scattered from the planar surface and a reference beam being specularly reflected from the planar surface. The system also includes detector responsive to radiation scattered from the planar surface. This detector produces a first signal representative thereof. Also provided is a spatial filter for filtering radiation scattered from the planar surface to allow only radiation from at least selected one of the plurality of surface structure types to reach the detector responsive to radiation scattered from the planar surface. The system may also include a detector responsive to the reference beam, producing a second signal in response to the reference beam and a circuit for producing a final signal from the first signal and the second signal.

摘要翻译： 本发明包括一种利用发射光束的辐射源监测平面上的表面结构的系统。 该平坦表面具有各种表面结构类型，其中包括多个凹槽，该多个凹槽以等于或小于预定最大角度的各种角度相交。 该系统包括用于沿着垂直于平面表面的光轴将光束引导到平面表面的装置，导致从平面表面散射的辐射和从平面表面镜面反射的参考光束。 该系统还包括响应于从平面表面散射的辐射的检测器。 该检测器产生代表其的第一信号。 还提供了一种空间滤波器，用于对从平面表面散射的辐射进行滤波，以允许来自多个表面结构类型中的至少一个的至少一个的辐射响应于从平面表面散射的辐射而到达检测器。 系统还可以包括响应于参考光束的检测器，响应于参考光束产生第二信号，以及用于从第一信号和第二信号产生最终信号的电路。

公开(公告)号：US5650900A

公开(公告)日：1997-07-22

申请号：US680591

申请日：1996-07-12

申请人： Bo Wei ,  Dallas W. Meyer ,  Venkat R. Koka

发明人： Bo Wei ,  Dallas W. Meyer ,  Venkat R. Koka

IPC分类号： G11B5/725 ,  G11B5/82 ,  G11B5/84 ,  G11B5/72

CPC分类号： G11B5/725 ,  G11B5/82 ,  G11B5/8408

摘要： A magnetic disc for a computer disc drive has distinct zones of differing lubricant thickness. A bonded+mobile zone covers a portion of the disc which preferably coincides with the landing zone. A zone of different lubricant thickness, such as lubricant-free, bonded-only or mostly-bonded, covers a different portion of the disc such as over the data zone. After a uniform layer of lubricant is coated over the disc surface, lubricant can be removed from distinct zones by solvent removal over a periphery of the disc and by removal by laser. The lubricant removal from distinct zones can occur either before or after bonding. Multiple lubricant thickness zones may be used, and the lubricant thickness profile over the entire disc can be controlled as desired.

摘要翻译： 用于计算机磁盘驱动器的磁盘具有不同的润滑剂厚度区域。 粘结+移动区覆盖盘的一部分，优选地与着陆区重合。 不同润滑剂厚度的区域，例如无润滑剂，仅粘合或大部分粘合的区域覆盖盘的不同部分，例如数据区域。 在盘表面上涂覆均匀的润滑剂层之后，可以通过在圆周上通过溶剂去除并通过激光去除从不同的区域去除润滑剂。 不同区域的润滑剂去除可能在粘合之前或之后发生。 可以使用多个润滑剂厚度区，并且可以根据需要控制整个盘上的润滑剂厚度分布。

公开(公告)号：US5820945A

公开(公告)日：1998-10-13

申请号：US831050

申请日：1997-04-01

申请人： Bo Wei ,  Dallas W. Meyer ,  Venkat R. Koka

发明人： Bo Wei ,  Dallas W. Meyer ,  Venkat R. Koka

IPC分类号： G11B5/725 ,  G11B5/82 ,  G11B5/84 ,  B05D3/00

CPC分类号： G11B5/725 ,  G11B5/82 ,  G11B5/8408

摘要： A magnetic disc for a computer disc drive has distinct zones of differing lubricant thickness. A bonded+mobile zone covers a portion of the disc which preferably coincides with the landing zone. A zone of different lubricant thickness, such as lubricant-free, bonded-only or mostly-bonded, covers a different portion of the disc such as over the data zone. After a uniform layer of lubricant is coated over the disc surface, lubricant can be removed from distinct zones by solvent removal over a periphery of the disc and by removal by laser. The lubricant removal from distinct zones can occur either before or after bonding. Multiple lubricant thickness zones may be used, and the lubricant thickness profile over the entire disc can be controlled as desired.

摘要翻译： 用于计算机磁盘驱动器的磁盘具有不同的润滑剂厚度区域。 粘结+移动区覆盖盘的一部分，优选地与着陆区重合。 不同润滑剂厚度的区域，例如无润滑剂，仅粘合或大部分粘合的区域覆盖盘的不同部分，例如数据区域。 在盘表面上涂覆均匀的润滑剂层之后，可以通过在圆周上通过溶剂去除并通过激光去除从不同的区域去除润滑剂。 不同区域的润滑剂去除可能在粘合之前或之后发生。 可以使用多个润滑剂厚度区，并且可以根据需要控制整个盘上的润滑剂厚度分布。

公开(公告)号：US06188545B1

公开(公告)日：2001-02-13

申请号：US09360489

申请日：1999-07-23

申请人： Long Nguyen ,  Venkat R. Koka ,  Frank Morris ,  Syed Iftikar

发明人： Long Nguyen ,  Venkat R. Koka ,  Frank Morris ,  Syed Iftikar

IPC分类号： G11B358

CPC分类号： G11B23/50

摘要： Methods and apparatus for increasing the reliability of removable storage media by dynamically reducing particulate contaminants from magnetic disks. The apparatus and methods include using wipers which slidingly engage both sides of the magnetic disk as the disk rotates, in order to reduce particulates. In some embodiments, the wiper can be coupled to a swing-type actuator or to any resilient member which can be moved over the surface of the magnetic disk.

摘要翻译： 通过动态地减少磁盘中的微粒污染物来增加可移动存储介质的可靠性的方法和装置。 该装置和方法包括使用当盘旋转时滑动地接合磁盘的两侧的擦拭器，以便减少微粒。 在一些实施例中，擦拭器可以联接到摆动式致动器或可以在磁盘表面上移动的任何弹性部件。

公开(公告)号：US5781377A

公开(公告)日：1998-07-14

申请号：US675377

申请日：1996-07-02

申请人： Venkat R. Koka ,  Ramesh Sundaram

发明人： Venkat R. Koka ,  Ramesh Sundaram

IPC分类号： G11B5/60 ,  G11B5/187 ,  G11B21/21

CPC分类号： G11B5/60

摘要： An improved magnetic head slider is disclosed. The slider includes an air bearing surface and a trailing edge face. A magnetic transducer located at the trailing edge face end of the slider is encapsulated in alumina. A coating of non-hygroscopic material covers at least portions of the alumina to form at least portions of the trailing edge face.

摘要翻译： 公开了一种改进的磁头滑块。 滑块包括空气轴承表面和后缘面。 位于滑块的后缘面端部的磁性换能器被包封在氧化铝中。 非吸湿材料的涂层覆盖氧化铝的至少一部分以形成后缘面的至少部分。