Special receptacle or package – For holding a machine readable recording medium – For holding a grooved phonograph disc
Patent
1988-10-18
1989-10-17
Fidei, David T.
Special receptacle or package
For holding a machine readable recording medium
For holding a grooved phonograph disc
206310, 206311, 206312, 206444, B65D 8530
Patent
active
048740853
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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Grobecker Hermann
Heher Werner
Nusselder Frederik B.
Zielasek Adelbert
Fidei David T.
Polygram GmbH
Treacy David R.
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