Optical information recording medium for semiconductor laser

Details Optical information recording medium for semiconductor laser Optical information recording medium for semiconductor laser

1983-06-23

1985-03-12

Herbert, Thomas J.

Stock material or miscellaneous articles

Composite

Of quartz or glass

260396R, 346 76L, 3461351, 369 94, 428457, 428532, 428913, 430945, B32B 1706, B32B 1504, G01D 1510

Patent

active

045045488

ABSTRACT:
An optical recording medium is disclosed which allows information to be recorded thereinto and read thereoutof by means of semiconductor laser light. The recording medium comprises at least a substrate and a recording layer formed on one or both sides of the substrate. Information is recorded into and read from the recording layer by laser light. The recording layer comprises an organic film of a naphthoquinonoid dye corresponding to the following molecular formula or an organic film whose major component is the naphthoquinonoid dye: ##STR1## where R is a first auxochrome and R' a second auxochrome. The first auxochrome is a hydroxyl group, an amino group, or an alkyl substituted amino group, while the second auxochrome is a hydroxyl group, an amino group, an alkyl substituted amino group or ##STR2## where X' is a hydrogen atom, an alkyl group, an amino group, a substituted amino group or an alkoxyl group.

REFERENCES:
patent: 4023185 (1977-05-01), Bloom et al.
patent: 4298975 (1981-11-01), van der Veen et al.
patent: 4442127 (1984-04-01), Jones et al.

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