Apparatus and method for laser texturing a landing zone and a data zone of a magnetic recording medium
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United States of America Patent
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Mar 20, 2001
Grant Date -
N/A
app pub date -
Jun 14, 1999
filing date -
Jan 15, 1997
priority date (Note) -
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Abstract
The substrate of a magnetic recording medium is laser textured with uniformity and precision employing a fiber optic laser delivery system to form a laser textured landing zone and a laser textured decoupled data zone. A continuous wave laser light beam is split into first and second continuous wave laser light sub-beams. The first continuous laser light sub-beam is impinged on a rotating substrate surface through a microfocusing lens system to laser texture a data zone. The second continuous wave laser light sub-beam is converted into a pulsed laser light beam and passed through a microfocusing lens to impinge on the substrate surface to laser texture a data zone.
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