Optical data recording medium

Details Optical data recording medium Optical data recording medium

1989-07-17

1991-02-26

Ryan, Patrick J.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 65, 428913, 430270, 430945, 369288, 346 11, 346 76L, 3461351, B32B 300

Patent

active

049960890

ABSTRACT:
An optical data recording medium provided with a recording layer, the recording medium having excellent durability to light and heat, superior writing sensitivity and a high C/N value, wherein at least one a group of anion selected from a group of hexafluorophosphate ion (PF.sub.6 .sup.-), trifluoromethane sulfonate ion (CF.sub.3 SO.sub.3 .sup.-) or thiocyanate ion (SCN.sup.-) is present as the anion in an indol cyanine dye having a methyne chain present in the recording layer of the optical data recording medium.

REFERENCES:
patent: 4547444 (1985-10-01), Bell et al.
patent: 4735839 (1988-04-01), Sato et al.
patent: 4767693 (1988-08-01), Oba et al.
patent: 4791023 (1988-12-01), Suzuki et al.
patent: 4885228 (1989-12-01), Inagi et al.
patent: 4900648 (1990-02-01), Hioki

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