Radiation imagery chemistry: process – composition – or product th – Dye image from radiation sensitive dye or dye former by dry... – Composition or product
Patent
1991-02-14
1992-11-17
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Dye image from radiation sensitive dye or dye former by dry...
Composition or product
430 19, 430 20, 430495, 430945, G03C 1695
Patent
active
051642875
ABSTRACT:
A photochromic material containing a copolymer of a spirobenzothiopyran derivative prepolymer and a liquid crystal prepolymer. In addition, a rewritable optical recording medium using the photochromic material. A rewritable optical recording medium obtained by coating a dispersed material, which is obtained by uniformly dispersing a spirobenzothiopyran derivative compound in a thermoplastic resin, on a substrate. A photochromic material capable of controlling a colored state and a decolorized state in a photon mode or a heat mode using an ultraviolet light source and a near-infrared light source. A rewritable optical recording medium capable of rewriting an information in a photon mode using a semiconductor laser.
REFERENCES:
patent: 3642484 (1972-02-01), Poot et al.
patent: 4565779 (1986-01-01), Arakawa et al.
patent: 4753867 (1988-06-01), Arakawa et al.
patent: 5023859 (1991-06-01), Eich et al.
patent: 5024784 (1991-06-01), Eich et al.
High Density Data Storage on Ultraviolet Sensitive Tape, S. Maslowski, Applied Optics, 13 No. 4 857-860 (1974).
Photochromism: Spectroscopy and Photochemistry of Pyran and Thiopyran Derivatives, Becker et al., J. Phys. Chem., 72 No. 3 997 (1968).
Photo-and-Thermo-Chromic Liquid Crystal Polymers with Spiropyran Groups, Cabrera et al., Mol. Cryst. Liq. Cryst., 155, 221-230 (1988).
Nagae Suguru
Nakaki Yoshiyuki
Nomura Kenji
Tsunoda Sei
Tsutsumi Kazuhiko
Bowers Jr. Charles L.
McPherson John A.
Mitsubishi Denki & Kabushiki Kaisha
LandOfFree
Photochromic material and rewritable optical recording medium does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photochromic material and rewritable optical recording medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photochromic material and rewritable optical recording medium will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1171240