Optical recording medium

Details Optical recording medium Optical recording medium

Filed on

1993-04-01

Date issued

1995-06-13

Examiner

Bowers, Jr., Charles L.

Patent Class

Radiation imagery chemistry: process, composition, or product th

SubClass

Imaging affecting physical property of radiation sensitive...

SubSubClass

Radiation sensitive composition or product or process of making

Other Related Categories

430270, 430495, 430945, 3461351, G11B 724

Type

Patent

Status

active

Patent number

054241715

Description

ABSTRACT:
An optical recording medium provided with: a light transmissive substrate; and a recording film and a reflective film which are formed on the light transmissive substrate. The recording film includes phthalocyanine dye expressed by the following general expression [I], ##STR1## wherein R.sub.1 and R.sub.2 represent either of hydrogen, hydroxyl group, alkoxyl group, and straight chained or side chained alkyl group, respectively, R.sub.3 to R.sub.6 represent either of substituted or non-substituted alkyl group, sulfino group, amino group, or sulfonic acid group, respectively, q represents the number of substituents and is the integer of 0 to 4, and Me represents a metal atom.

REFERENCES:
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patent: 4529688 (1985-07-01), Law et al.
patent: 4798781 (1989-01-01), Hirose et al.
patent: 4816386 (1989-03-01), Gotoh et al.
patent: 5024926 (1991-06-01), Itoh et al.
patent: 5075203 (1991-12-01), Katayose et al.
patent: 5079135 (1992-01-01), Matsuzawa et al.
patent: 5248538 (1993-09-01), Kovacs et al.
patent: 5283094 (1994-02-01), Sasakawa et al.

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