Magnetic disk
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United States of America Patent
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-
Jun 2, 1992
Grant Date -
N/A
app pub date -
Dec 5, 1990
filing date -
Dec 6, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magnetic disk of the stretched surface type, in which a substrate is formed at least two bases having opposing warp characteristics so as to avoid adverse deformation effects. Non-metallic materials, which are less expensive than metallic materials such as aluminum, preferably are used for the substrate, with the thermal expansion coefficient of the substrate being approximately that of the arm on which a magnetic head is mounted. The bases may be adhered by a hot-melt adhesive or a radiation-curable adhesive.
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