Storage cassette for high storage density, disc-shaped information carriers
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United States of America Patent
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-
Oct 17, 1989
Issued Date -
N/A
app pub date -
Oct 18, 1988
filing date -
Feb 16, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
High storage density information carriers, particularly optically readable video discs and digital records, can only be read error-free by a playback device when the high requirements made of freedom from warping also remain guaranteed over long storage times. A cassette is provided to support and fix an information carrier only within its central portion which is free of information tracks and, by a sufficient spacing of the information carrier in the support-free area between a bottom portion and a cover portion contact with the information carrier in this area is avoided, even given consideration of maximally-admissible warping tolerances of the storage cassette and of the information carrier.
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