Use of anthracyanine and phenanthracyanine chromophores in optic

Details Use of anthracyanine and phenanthracyanine chromophores in optic Use of anthracyanine and phenanthracyanine chromophores in optic

1987-01-12

1988-11-08

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Erasable imaging

430945, 430944, 430495, 430906, 430 21, 430270, 540122, 540129, 540130, 540123, 540140, 540133, 540128, 540139, 3461351, 346 76L, 369284, 369 94, 428 69, G03C 366, G03C 172, G11B 724

Patent

active

047833866

ABSTRACT:
Provided is an optical information recording medium and a method of recording information thereon. The information layer of the recording medium comprises an anthracyanine or phenanthracyanine chromophore compound. In a preferred embodiment, the chromophore is substituted with at least one substituent conferring film forming properties to the chromophore, e.g., a monomer or oligomeric substituent comprised of acid, amide or ester units. The resulting information layer exhibits strong absorption in the range of from about 780-850 nm. Employing an anthracyanine or phenanthracyanine chromophore substituted with a film forming substituent further offers the advantages of a single component material exhibiting good thermomechanical properties.

REFERENCES:
patent: 4241355 (1980-12-01), Bloom et al.
patent: 4478782 (1984-10-01), Kuder et al.
patent: 4492750 (1985-01-01), Law et al.
E. V. Blackburn et al., "Preparation and Photochemistry of Some Tetra Zaporphins", Journal of Chemical Society (C), London, 1970, pp. 175-178.

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