Radiation imagery chemistry: process – composition – or product th – Erasable imaging
Patent
1993-08-23
1995-07-11
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Erasable imaging
430945, 430 21, 430269, G11B 700
Patent
active
054320321
ABSTRACT:
A method of writing and reading or writing, reading and erasing information in an optical recording medium is provided in which in an optical recording medium an optically active compound which is an inherently chiral dissymmetric olefinic chromophore is subjected to the action of circularly polarized light or is caused to undergo cis-trans isomerization during writing, is subjected to linearly polarized light during reading, and is subjected to linearly or circularly polarized light or light of a wavelength suitable to effect cis-trans isomerization for erasing.
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Feringa et al., "Inherently Chiral Olefins", Recl. Trav. Chim. Pays-Bas 97, pp. 249-251 (Oct. 1978).
Feringa et al., "Torsionally Distorted Olefins", J. Am. Chem. Soc. 99, pp. 602-603 (Jan. 1977).
De Lange Ben
Feringa Bernard L.
Jager Wolter F.
Meijer Egbert W.
Bartlett Ernestine C.
Bowers Jr. Charles L.
McPherson John A.
U.S. Philips Corporation
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