Optical disc air separation method and device

Details Optical disc air separation method and device Optical disc air separation method and device

1983-07-26

1985-09-03

Goldberg, E. A.

Dynamic information storage or retrieval

Storage medium structure

Layered

369287, 3461351, 346137, H04N 576, G01D 1534

Patent

active

045396736

ABSTRACT:
An optical disc structure including two resilient disc members which are bonded together adjacent their outer peripheries and which include an air channel allowing communication between the chamber formed between the discs and the atmosphere. An information layer is formed on the inner surface of at least one of the members. When the members are spun, a pressure differential is caused tending to push the two members apart, thereby assuring that one member will not contact the information layer formed on the other member and that the two members will not be close enough together to cause optical interference.

REFERENCES:
patent: 4074282 (1978-02-01), Balas, Jr. et al.
patent: 4264911 (1981-04-01), Wilkinson
patent: 4353767 (1982-10-01), Wilkinson
patent: 4365258 (1982-12-01), Geyer et al.
patent: 4447899 (1984-05-01), Geyer et al.

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