公开(公告)号：US4872071A

公开(公告)日：1989-10-03

申请号：US143798

申请日：1988-01-14

申请人： Malcolm C. Easton ,  Peter B. P. Phipps

发明人： Malcolm C. Easton ,  Peter B. P. Phipps

IPC分类号： G11B5/455 ,  G11B19/04 ,  G11B27/34 ,  G11B27/36 ,  G11B33/10

CPC分类号： G11B19/04 ,  G11B27/34 ,  G11B27/36 ,  G11B33/10

摘要： A method and apparatus for detecting abnormal operation in a magnetic disk file which comprises reading data for each head and each track to obtain a readback signal. The readback signal is read from a predetermined area of each track on a disk that is not normally rewritten during normal operation of the system. The amplitude of the signal read from one track is compared with the amplitude of the signals read from other tracks, and an alarm condition when the comparison indicates a variation which exceeds a predetermined level. Corrective action can be taken in response to the alarm condition prior to an actual failure condition in the magnetic disk file.

公开(公告)号：US4245008A

公开(公告)日：1981-01-13

申请号：US956296

申请日：1978-10-30

申请人： John D. Michaelsen ,  Daniel A. Nepela ,  Peter B. P. Phipps

发明人： John D. Michaelsen ,  Daniel A. Nepela ,  Peter B. P. Phipps

IPC分类号： G11B5/66 ,  C22C19/07 ,  C22C38/00 ,  G11B5/64 ,  H01F10/14 ,  H01F10/16 ,  H01F41/20 ,  B32B15/04

CPC分类号： G11B5/656 ,  H01F10/14 ,  H01F41/20 ,  Y10S428/928 ,  Y10T428/12465 ,  Y10T428/12931 ,  Y10T428/12951

摘要： A thin film magnetic recording medium for deposition on a record carrier includes a ferromagnetic alloy containing iron, cobalt and chromium. The ferromagnetic alloy consists of from 0-55% cobalt, from 8-22% of chromium with the remainder iron. The preferred range of chromium is from 10-18%. The magnetic recording layer is vacuum deposited over an extended portion of a record carrier for storing information which is represented by the spatial distribution of magnetic transitions in the magnetic layer. The iron-cobalt-chromium or iron-chromium composition according to this invention, gives the best magnetic properties consistent with excellent corrosion resistance.

摘要翻译： 用于沉积在记录载体上的薄膜磁记录介质包括含铁，钴和铬的铁磁性合金。 铁磁合金由0-55％的钴组成，8-22％的铬和其余的铁组成。 铬的优选范围为10-18％。 磁记录层被真空沉积在记录载体的延伸部分上，用于存储由磁性层中的磁转变的空间分布表示的信息。 根据本发明的铁 - 钴 - 铬或铁 - 铬组合物具有与优异的耐腐蚀性一致的最佳磁性。

公开(公告)号：US5491605A

公开(公告)日：1996-02-13

申请号：US363460

申请日：1994-12-23

申请人： Timothy S. Hughbanks ,  Hin Pong E. Lee ,  Peter B. P. Phipps ,  Neil L. Robertson ,  Albert J. Wallash

发明人： Timothy S. Hughbanks ,  Hin Pong E. Lee ,  Peter B. P. Phipps ,  Neil L. Robertson ,  Albert J. Wallash

IPC分类号： G11B5/11 ,  G11B5/39 ,  G11B5/40 ,  G11B5/127 ,  G11B5/10

CPC分类号： G11B5/3903 ,  G11B5/11 ,  G11B5/40 ,  G11B5/3967

摘要： In a magnetic read/write transducer, the elements of the magnetoresistive (MR) and inductive heads are shorted together and to the slider substrate to provide a low resistance, conductive path bypassing the MR sensor element and minimizing electrical current through the MR sensor element during discharge of static electric charge. The MR sensor element, the MR conductive leads, the MR magnetic shield elements and inductive pole tips exposed at the slider air bearing surface are shorted together and to the slider substrate by a layer of conductive material, such as tungsten, formed over the slider air bearing surface. The conductive layer shorts the head elements together and to the slider substrate thus protecting the head against ESD/EOS damage during subsequent handling and assembly. The conductive layer is removed by wet etching prior to placing the magnetic head into operation in a magnetic storage system.

摘要翻译： 在磁读/写换能器中，磁阻（MR）和感应头的元件在一起和滑块基板短路，以提供绕阻MR传感器元件的低电阻导电路径，并使通过MR传感器元件的电流最小化 放电静电。 在滑块空气轴承表面处暴露的MR传感器元件，MR导电引线，MR磁屏蔽元件和感应极端部通过形成在滑块空气上的一层导电材料（例如钨）短路在一起并且滑块基板 承载面。 导电层将头元件组合在一起并滑动到滑块基板，从而在随后的处理和组装过程中保护头部免受ESD / EOS损坏。 在磁头在磁存储系统中运行之前，通过湿蚀刻去除导电层。

公开(公告)号：US4594273A

公开(公告)日：1986-06-10

申请号：US672518

申请日：1984-11-19

申请人： Saad K. Doss ,  Peter B. P. Phipps

发明人： Saad K. Doss ,  Peter B. P. Phipps

IPC分类号： C23C18/52 ,  C23C18/36 ,  B05D1/18

CPC分类号： C23C18/36

摘要： The rate of deposition of metallic film on a substrate in an electroless plating process is substantially increased without affecting film properties or causing adverse consequences to the plating bath. The boiling point of the plating bath is elevated either by adding to the bath a substance, such as ethylene glycol, which does not alter the reactivity of the bath, or by providing a sealed enclosure over the bath to increase the ambient pressure. The bath is then heated to a substantially higher temperature but below the temperature at which localized boiling occurs. Excellent metal film qualities are obtained on the substrate at a substantially higher rate than in conventional electroless plating and no nucleation sites are created in the bath to cause spontaneous decomposition of the bath.

摘要翻译： 化学镀处理中的金属膜在基板上的沉积速度大大增加，而不影响膜性质或对电镀槽产生不利影响。 通过向浴中加入不改变浴的反应性的物质，例如乙二醇，或通过在浴上提供密封的外壳以增加环境压力，电镀浴的沸点升高。 然后将浴加热至基本更高的温度，但低于局部沸腾发生的温度。 在基板上以比常规化学镀更高的速率获得优异的金属膜质量，并且在浴中不产生成核位置以引起浴的自发分解。