Magnetic disk, disk driver system and method for writing servo data on the magnetic disk
A disk drive, servo data technology, applied in the direction of driving/moving recording head, recording/reproducing/deleting method, instrument, etc., can solve the problems of difficult implementation, increasing the total cost of disk, and expensive CMP
Inactive Publication Date: 2011-09-21
WESTERN DIGITAL TECH INC
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The dip / liquid spin coating process is particularly attractive from a cost and simplification standpoint; however, it typically cannot fill servo-patterned features
One planarization process that can be used to avoid these limitations is chemical mechanical polishing (CMP); however, CMP is relatively expensive and difficult to implement, thus increasing the overall cost of the manufactured disk
Method used
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Embodiment Construction
[0020] The drawings and the following description illustrate specific exemplary embodiments of the invention. It will thus be appreciated that those skilled in the art will be able to devise various arrangements which, although not explicitly described or shown herein, embody the principles of the invention and are included within its scope. Additionally, any examples described herein are intended to aid in the understanding of the principles of the invention, and should be construed as not limited to these specifically described examples and conditions. As a result, the invention is not to be limited to the specific embodiments or examples described below, but by the claims and their equivalents.
[0021] figure 1 A simplified top view of a typical disk drive system 100 suitable for including a disk 110 is shown, as exemplarily described herein. In disk drive system 100, a disk 110 is rotatably mounted on a motorized spindle 120. As shown in FIG. A slider 122 on which a re...
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Abstract
The invention relates to a magnetic disk, a disk driver system and a method for writing servo data on the magnetic disk. Embodiments herein illustrate patterned servo data that is used to facilitate subsequent servo writing to a magnetic disk while allowing the patterned disk to be planarized with a relatively simple planarization process. One disk drive system includes a magnetic disk that is patterned with magnetic lands and nonmagnetic grooves. The magnetic disk also includes bootstrap bands that may be configured at an inner diameter of the magnetic disk. The magnetic lands of the bootstrap bands have varying sizes and are patterned as servo data having a uniform polarity of magnetization. The bootstrap bands have a width that is sufficiently narrow to support an air bearing surface of a slider. The data tracks are circumferentially configured proximate to the bootstrap bands. The slider reads the patterned servo data to facilitate writing of additional servo data in the data tracks.
Description
technical field [0001] The present invention relates to the field of disk drive systems, and more particularly, to disks having patterned servo regions that assist in aligning a slider with data on the disk. Background technique [0002] Many computing systems use disk drive systems for mass storage of information. Disk drive systems typically include one or more sliders, which include read and write heads. The actuator / cantilever holds the slider above the disk. As the disk rotates, the airflow generated by the rotation of the disk causes the air bearing surface (ABS) of the slider to fly above the disk at a specific height. How high the slider flies depends on the shape of the ABS. As the slider flies on a cushion of air, a voice coil motor (VCM) moves the actuator / cantilever to position the read and write heads over selected tracks of the disk. [0003] Disks consist of data sectors and servo sectors. The servo sector includes servo data, and the servo data is used t...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G11B17/056G11B5/09
CPCG11B21/02G11B5/82G11B5/59627G11B5/743G11B5/59633G11B5/59688B82Y10/00
Inventor 托马斯.R.阿尔布雷克特库尔特.A.鲁宾
Owner WESTERN DIGITAL TECH INC