Method of producing a magnetic recording medium
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United States of America Patent
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Mar 2, 2004
Grant Date -
N/A
app pub date -
Nov 13, 2000
filing date -
Jul 17, 2000
priority date (Note) -
Expired
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Abstract
A method of producing a magnetic recording medium comprising the steps of providing a substrate having a layer of a non-magnetic material that can be converted into a magnetic state by annealing, and then converting selected portions of the non-magnetic layer to a magnetic state by subjecting them to annealing by directing a focussed beam of radiation onto the substrate to form a patterned magnetic layer comprising an ordered array of magnetic regions separated by non-magnetic regions.
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