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Photochromic Printing

IP.com Disclosure Number: IPCOM000084315D
Original Publication Date: 1975-Oct-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Crooks, W: AUTHOR

Abstract

A record material such as paper is coated with particles of light-responsive material, and also with solvent contained in thermorupturable microcapsules. The capsules are thermoruptured using an IR laser giving image wise impingement. The record material is then blanket exposed to UV or visible light, to which the light-responsive particles are sensitive and the image is thereby developed.

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Photochromic Printing

A record material such as paper is coated with particles of light-responsive material, and also with solvent contained in thermorupturable microcapsules. The capsules are thermoruptured using an IR laser giving image wise impingement. The record material is then blanket exposed to UV or visible light, to which the light-responsive particles are sensitive and the image is thereby developed.

Suitable solvents include ligroin, diethylbenzene, xylene, toluene, cyclobexane, petroleum ether and the like. Suitable light-sensitive materials include: 10-(9',2'-methylxanthylidene) - anthrone,

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3 -methyl-10-(9'-xanthylidene) - anthrone,

3-chloro-10-(9'-xanthylidene) - anthrone,

10-(9'-xanthylidene) - anthrone,

1,3,3-trimethylindolino-6'-nitro benzopyrylospiran,

1,3,3 trimethylindolino-6'-methoxy-8-nitrobenzo

pyrylospiran,

1,3,3, trimethylindolino-6'-nitro-8'-methoxybenzo

pyrylospiran, and

1,3,3-trimethylindolino-7'-bromo-8'-nitrobenzo

pyrylospiran.

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