Optical information recording medium

Details Optical information recording medium Optical information recording medium

1992-05-12

1994-05-31

Ryan, Patrick J.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 65, 428457, 428913, 430945, 346 76L, 3461351, B32B 300

Patent

active

053168143

ABSTRACT:
An optical information recording medium including a ROM area and a recordable area is composed of a light-transmitting substrate with prepits and/or guide grooves formed on the surface thereof, a light absorption layer serving as a recording layer which is composed of a dye as the main component overlaid on the light-transmitting substrate, and a light reflection layer which is composed of metallic film overlaid on the light absorption layer. The light absorption layer of this optical information recording medium is formed on the substrate by coating a solution composed of a dye and a solvent of a mixture of a fluoridated alcohol of formula (I) and an alcohol of formula (II):

REFERENCES:
patent: 4651172 (1987-03-01), Watanabe et al.
patent: 4940618 (1990-07-01), Hamada
patent: 5206063 (1993-04-01), Westerhout

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