Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2006-02-21
2006-02-21
Sniezek, Andrew L. (Department: 2651)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
C360S097010, C360S073030
Reexamination Certificate
active
07002768
ABSTRACT:
A disk drive having a layer of lubricant on a disk surface, where an undesirable lubricant layer thickness modulation is reduced by varying ω/f during operation of the disk drive. Here ω is the angular velocity of the disk and f is a resonant frequency of a head assembly containing the head. In this manner, the amplitude of the lubricant thickness modulation is decreased, improving disk drive performance. The ratio ω/f is preferably varied by varying the disk angular velocity ω.
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Dai Qing
Hendriks Ferdinand
Marchon Bruno
Nayak Ullal Vasant
Alboszta Marek
Gold Darren
Hitachi Global Storage Technologies - Netherlands B.V.
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