Birefringent azo dye polymer erasable optical storage medium

Details Birefringent azo dye polymer erasable optical storage medium Birefringent azo dye polymer erasable optical storage medium

1993-04-21

1995-01-24

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Erasable imaging

430945, 430 1, 430270, 365120, 365121, G03C 100, G11C 1302

Patent

active

053842219

ABSTRACT:
An optical storage medium including a transparent polymer and an isomerizable AZO dye, the optical storage medium being coated as a water miscible solution on a substrate so as to form a film having a thickness of from .mu.m to 100 .mu.m storing information through birefringence and having a diffraction efficiency greater than 40% at a 1 millisecond response time. The isomerizable AZO dye remains in the film and is present in a concentration of from 4.5% to 25% based on the weight of the film.

REFERENCES:
patent: 4380769 (1983-04-01), Thomas et al.
patent: 4551819 (1985-11-01), Michl et al.
patent: 4562107 (1985-12-01), Daniels
patent: 4635076 (1987-01-01), Willson
patent: 4649169 (1987-03-01), Thompson et al.
patent: 4666819 (1987-05-01), Elmasry
patent: 4686143 (1987-08-01), Yoshikawa et al.
patent: 4686169 (1987-08-01), Yoshino et al.
patent: 4864537 (1989-09-01), Michl et al.
patent: 4954543 (1990-09-01), Lewis et al.
patent: 4960679 (1990-10-01), Nakagiri et al.
patent: 5011756 (1991-04-01), Nikles
patent: 5139928 (1992-08-01), Lewis
patent: 5147930 (1992-09-01), La Fleur et al.
patent: 5296321 (1994-03-01), Kawanishi et al.
Gong et al. "Holographic Method for investigation of Photochemical Processes of MR in PMMA & PS" J. Phys. Chem. 91 4504 1987.
Chemical Abstracts 1982 Index Guide p. 277G (1982).
Todorov et al. "Photoinduced Anisotropy in . . . " iEEE J. Quant Electron. (22) #8 1262-67 (1986).
Nuyken et al. "Azo polymers . . . " Makromol. Chem. (190) 469-75 (1989).

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