Optical foam-spacer disk assembly
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United States of America Patent
Stats
-
Sep 26, 1989
Grant Date -
N/A
app pub date -
Mar 2, 1987
filing date -
Mar 5, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An optical disk is provided which comprises two sheets of substrates; or two sheets of substrate and a reinforcing plate or a reinforcing rim; or one sheet of substrate and a reinforcing plate; which are bonded to form an integrated body having a spacer interposed therebetween, said spacer being made of elastomeric foam having a specific gravity of not more than 1.5 and an expansion ratio of not less than 1.5 as the material of the said spacer. This optical disk has a high adaptability of the drive and exhibits a high reliability, i.e. excellent vibration restricting performance, thereby being possible to provide a stable and highly accurate information processing.
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Cited Art Landscape
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