Optical information recording medium

Details Optical information recording medium Optical information recording medium

1991-02-21

1993-04-13

Ryan, Patrick J.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 65, 428192, 428913, 369277, 369284, 369288, 346 76L, 3461351, 430945, B32B 302

Patent

active

052021718

ABSTRACT:
An optical information recording medium is manufactured by a so-called photopolymerization process. The medium comprises a glass substrate and a layer of ultraviolet ray setting resin having a surface which is a replica of a stamper. Concentric recesses are formed at the outer and inner peripheral edges of the glass substrate to receive an excess resin to avoid any formation of a bur on the finished disk medium.

REFERENCES:
patent: 4802160 (1989-01-01), Yamada

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