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AssigneeHewlett-Packard Company
InventorsThomas C. Oliver, David P. Jones, Leslie G. Christie, Mark E. Wanger, Thomas E. Berg, Melvin C. Crane
Estimating the term…
A write-erase magnet assembly for a data storage device including: a permanent magnet having a longitudinal axis and having a first longitudinally extending face portion with a first polarity and a second longitudinally extending face portion with a second polarity opposite the first polarity for alternately producing write and erase magnetic bias fields on an adjacently positioned data storage medium; a magnet support assembly for rotatably supporting the permanent magnet; a magnetic detent fixedly positioned relative to the longitudinal axis of the permanent magnet for magnetically producing a biasing torque on the magnet tending to orient the closer of the first and second face portions of the permanent magnet in adjacent relationship with the detent. A coil for applying flipping torque and braking torque for an eddy current rotation dampening assembly are also disclosed.
A method of switching write and erase magnetic bias fields applied to a data storage medium using a permanent magnet having a first magnetic field orientation in a first rotation position associated with a writing operation and a second magnetic field orientation in a second rotation position associated with an erasing operation comprising the steps of:
Dependencies are inferred from the claim text.