公开(公告)号：US08456643B2

公开(公告)日：2013-06-04

申请号：US12886408

申请日：2010-09-20

申请人： Vijay Prabhakaran ,  Wuxing Gan ,  Ladislav R. Pust ,  David E. Fowler ,  Lanshi Zheng

发明人： Vijay Prabhakaran ,  Wuxing Gan ,  Ladislav R. Pust ,  David E. Fowler ,  Lanshi Zheng

IPC分类号： G01B11/02 ,  G11B5/00 ,  G11B5/596

CPC分类号： G11B5/455 ,  G11B5/607

摘要： A method and system for determining a shape of a portion of an air-bearing surface (ABS) of a head residing on a slider are described. The ABS is configured to fly at a fly height from and with a velocity with respect to a disk during normal operating conditions. The method and system include driving at least one heater residing in the head while the slider is substantially at the normal operating conditions with respect to the disk and the fly height. The shape of the portion of the ABS changes in response to the heater(s) being driven. The method and system also include performing Doppler measurements on the slider while the heater is driven. The shape may then be determined based on the Doppler measurements.

摘要翻译： 描述了用于确定位于滑块上的头部的空气轴承表面（ABS）的一部分的形状的方法和系统。 ABS被配置成在正常操作条件期间以相对于盘的速度从飞行高度飞行。 该方法和系统包括驱动位于头部中的至少一个加热器，同时滑块基本上处于相对于盘的飞行高度的正常操作条件。 ABS部分的形状随加热器的驱动而变化。 该方法和系统还包括在加热器被驱动时对滑块执行多普勒测量。 然后可以基于多普勒测量来确定形状。

公开(公告)号：US06956718B1

公开(公告)日：2005-10-18

申请号：US10223992

申请日：2002-08-19

申请人： Ashok Venkatesh Kulkarni ,  Vijay Prabhakaran ,  Pablo Gabriel Levi ,  Biao Sun ,  Eric Thomas Sladek ,  Michael Thomas Sullivan

发明人： Ashok Venkatesh Kulkarni ,  Vijay Prabhakaran ,  Pablo Gabriel Levi ,  Biao Sun ,  Eric Thomas Sladek ,  Michael Thomas Sullivan

IPC分类号： G11B5/60

CPC分类号： G11B5/6082 ,  G11B5/3106

摘要： A slider is formed of an air bearing surface coated with a wear limiting coating that substantially limits surface wear of the air bearing surface encountered in proximity recording. The wear limiting coating is comprised of a wear inhibiting layer formed on the air bearing surface and a sacrificial layer formed on the wear inhibiting layer. The two coatings of the wear limiting coating have different mechanical properties so that the sacrificial layer is burnished, exposing the wear inhibiting layer. This design substantially limits the surface wear of the air bearing surface typically encountered in proximity recording, resulting in less debris accumulation, which could otherwise adversely affect the performance of the proximity recording head. This self-limiting burnishing action overcomes the flying height variation due to manufacturing tolerances and provides extremely small and uniform magnetic spacing, which greatly enhances the proximity recording. Moreover, the burnishing action also achieves an improved flying stability and a reduction in the altitude sensitivity.

摘要翻译： 滑动件由涂覆有磨损限制涂层的空气轴承表面形成，其基本上限制了在接近记录中遇到的空气轴承表面的表面磨损。 磨损限制涂层由形成在空气轴承表面上的耐磨损层和形成在耐磨损层上的牺牲层组成。 磨损限制涂层的两个涂层具有不同的机械性能，使得牺牲层被抛光，暴露出耐磨损层。 该设计基本上限制了在接近记录中通常遇到的空气轴承表面的表面磨损，导致更少的碎屑积聚，否则这将不利地影响接近记录头的性能。 这种自限制抛光动作克服了由于制造公差引起的飞行高度变化，并且提供极小的和均匀的磁间距，这极大地增强了接近记录。 此外，抛光动作还实现了飞行稳定性的提高和高度敏感性的降低。

公开(公告)号：US20110286129A1

公开(公告)日：2011-11-24

申请号：US12886408

申请日：2010-09-20

申请人： VIJAY PRABHAKARAN ,  WUXING GAN ,  LADISLAV R. PUST ,  DAVID E. FOWLER ,  LANSHI ZHENG

发明人： VIJAY PRABHAKARAN ,  WUXING GAN ,  LADISLAV R. PUST ,  DAVID E. FOWLER ,  LANSHI ZHENG

IPC分类号： G11B5/02

CPC分类号： G11B5/455 ,  G11B5/607

摘要： A method and system for determining a shape of a portion of an air-bearing surface (ABS) of a head residing on a slider are described. The ABS is configured to fly at a fly height from and with a velocity with respect to a disk during normal operating conditions. The method and system include driving at least one heater residing in the head while the slider is substantially at the normal operating conditions with respect to the disk and the fly height. The shape of the portion of the ABS changes in response to the heater(s) being driven. The method and system also include performing Doppler measurements on the slider while the heater is driven. The shape may then be determined based on the Doppler measurements.

摘要翻译： 描述了用于确定位于滑块上的头部的空气轴承表面（ABS）的一部分的形状的方法和系统。 ABS被配置成在正常操作条件期间以相对于盘的速度从飞行高度飞行。 该方法和系统包括驱动位于头部中的至少一个加热器，同时滑块基本上处于相对于盘的飞行高度的正常操作条件。 ABS部分的形状随加热器的驱动而变化。 该方法和系统还包括在加热器被驱动时对滑块执行多普勒测量。 然后可以基于多普勒测量来确定形状。