Optical disc structure and related method of manufacture

Details Optical disc structure and related method of manufacture Optical disc structure and related method of manufacture

G - Physics

11

B

352/32.4

G11B 7/24 (2006.01) G11B 7/26 (2006.01) B29C 65/48 (2006.01)

Patent

CA 1214872

OPTICAL DISC STRUCTURE AND RELATED METHOD OF MANUFACTURE 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.

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