Radiation imagery chemistry: process – composition – or product th – Dye image from radiation sensitive dye or dye former by dry... – Multiple image formation – multiple image exposure – or...
Patent
1990-09-28
1995-07-11
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Dye image from radiation sensitive dye or dye former by dry...
Multiple image formation, multiple image exposure, or...
430338, 430342, 430343, 430345, 430495, 430945, G03C 172, G03C 500
Patent
active
054320488
ABSTRACT:
A rewritable photochromic optical disc which comprises a photochromic recording layer made of a diaryl ethene derivative capable of assuming first to third states, the first state with a first absorption band transforming into the second state with a second absorption band in response to light of a first wavelength, the second state transforming into the first state in response to light of a second wavelength in said second absorption band, the fist state transforming into the third state with a third absorption band in response to light of a third wavelength, and the third state transforming into the first state in response to light of a fourth wavelength in said third absorption band.
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Morinaka, Akira et al., "Photochromic films as optical recording materials and their preparation", Japan, Kokai Tokkyo Koho, 7 pp. 1989 (abstract).
Irie, M. "Thermally Irreversible Photochromic Material for Erasable Optical Data"; Polym. Inf. Technol., [Proc. Am. Chem. Soc. Symp.] Meeting Date 1988, 105-116, Edited by: Mittal, Kashimiri Lab. Plenum: New York, N.Y., 1989 (abstract).
Irie, Masahiro, "Advance in Photochromic Materials for Optical Storage Media"; Jpn. J. App. Phys.; Part 1, 28 (Supp. 28.3), 215-219, 1989 (abstract).
Irie, Masahiro, "Thermally Irreversible Photochromic Material for Erasable Optical Storage Data", Polym. Prepr. (Am. Chem. Soc. Div. Polym. Chem.), 29(2), 215-216, 1988 (abstract).
Irie, Masahiro, "Ethylene Derivative as Laser-Sensitive Photochromic Substance for Optical Recording Reaction", Jpn. Kokai Tokkyo Koho, 16 pp., 1988 (Abstract).
Matsui Fumio
Taniguchi Hitoshi
Bowers Jr. Charles L.
Chea Thorl
Pioneer Electronic Corporation
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