Apparatus and method for stabilizing slider flying height over a discrete track media disk surface in a hard disk drive
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United States of America Patent
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May 1, 2012
Grant Date -
Dec 2, 2010
app pub date -
May 27, 2009
filing date -
May 27, 2009
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This application discloses a hard disk drive and a disk employing Discrete Tracks each including a land with a groove at a first depth with sectors of each track separated by servo pattern wedges with a variable second land and a variable second groove possessing widths and a second depth for the grooves differing from the first widths and depth of the groove of the sectors. The second depth optimizes the stability of the flying height of a slider over both sectors and servo pattern wedges, removing the possibility of added vibrational modes adversely affecting the slider's normal operations of reading, writing and flying above the disk surface. This also discloses the disks and their manufacture of disk surfaces with these sector zones and servo pattern wedges.
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