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Servo write robust and good altitude performance abs

a servo and high-performance technology, applied in the field of head sliders, can solve the problems of power requirements, radiated audible noise limits, and computer systems that may not operate,

Active Publication Date: 2012-04-26
WESTERN DIGITAL TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This design ensures stable fly height and reduced roll tendency, preventing crashes during both read and servo write operations, maintaining predetermined fly height and altitude performance with improved roll stiffness in helium environments.

Problems solved by technology

In general, the hard disk drive is a device, which may or may not be removable, but without which, some computing systems may not operate.
Mechanical considerations, radiated audible noise limits, power requirements, and other factors limit the number of disks that can be economically combined in a single drive.
It is well known to those familiar with head-disk interface design that a particular head-disk combination will not fly precisely at the desired separation.
Furthermore, the head and its mounting gimbal are subject to mechanical tolerances and forces that can cause it to deviate from the desired attitude with respect to the media surface, (e.g., static and dynamic pitch and roll).

Method used

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  • Servo write robust and good altitude performance abs
  • Servo write robust and good altitude performance abs
  • Servo write robust and good altitude performance abs

Examples

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Embodiment Construction

[0020]In the following, reference is made to embodiments of the invention. However, it should be understood that the invention is not limited to specific described embodiments. Instead, any combination of the following features and elements, whether related to different embodiments or not, is contemplated to implement and practice the invention. Furthermore, although embodiments of the invention may achieve advantages over other possible solutions and / or over the prior art, whether or not a particular advantage is achieved by a given embodiment is not limiting of the invention. Thus, the following aspects, features, embodiments and advantages are merely illustrative and are not considered elements or limitations of the appended claims except where explicitly recited in a claim(s). Likewise, reference to “the invention” shall not be construed as a generalization of any inventive subject matter disclosed herein and shall not be considered to be an element or limitation of the appended...

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Abstract

A head slider for a disk drive storage device. In general, the head slider should fly at the target height above the disk without crashing onto the hard disk. The head slider has an outside flange that encloses a plateau and an inside flange that encloses a plateau. The two plateaus may have the same surface area or the outside plateau may have a greater surface area. Because of the design of the outside flange, the likelihood that the head slider will crash on the hard disk is reduced.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]Embodiments of the present invention generally relate to a head slider within disk drive storage devices.[0003]2. Description of the Related Art[0004]Hard disk drives are used in many computer system operations. In fact, many computing systems operate with some type of hard disk drive to store the most basic computing information, e.g., the boot operation, the operating system, the applications, etc. In general, the hard disk drive is a device, which may or may not be removable, but without which, some computing systems may not operate.[0005]A typical hard disk drive includes a storage disk or hard disk that spins at a standard rotational speed. An actuator arm or slider is utilized to reach out over the disk. The arm has a magnetic read / write transducer or head for reading / writing information to or from a location on the disk. The complete assembly, e.g., the arm and head, is called a head gimbal assembly (HGA). The as...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G11B5/60
CPCG11B5/6082
Inventor AMBEKAR, ROHIT P.BACH, NGHIAPIT, REMMELTRUIZ, OSCAR J.
Owner WESTERN DIGITAL TECH INC