Optical recording medium

Details Optical recording medium Optical recording medium

1993-11-04

1995-10-03

Ryan, Patrick J.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428457, 428913, 430270, 430945, 3461351, 347264, B32B 300

Patent

active

054550947

ABSTRACT:
An optical recording medium has a substrate having a groove, a recording film of phthalocyanine coloring matter and provided on the substrate, a light reflection film on the recording film, and a protection film on the light reflection film. The depth of the groove is between 800 .ANG. and 1100 .ANG..

REFERENCES:
patent: 5075147 (1991-12-01), Usami et al.
patent: 5080946 (1992-01-01), Takagisi et al.
patent: 5161150 (1992-11-01), Namba et al.

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