Light transmission particle for forming color image

Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...

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430126, 430 45, 430345, 428407, 8 25A, 26032611S, G03G 908

Patent

active

042385628

ABSTRACT:
Disclosed is a light transmission particle containing a colorless sublimable dye that is a spirobenzopyrane indole compound suitable for use in the formation of a color image. This particle can produce a clear color image having little fogging and having an excellent resolving power.

REFERENCES:
patent: 2940847 (1960-06-01), Kaprelian
patent: 3080318 (1963-03-01), Claus
patent: 3732119 (1973-05-01), Churchill
patent: 4121932 (1978-10-01), Ishida
patent: 4145300 (1979-03-01), Hendriks
Kobayashi et al., "The Photochromism of Evaporated Photospiran", Bull. Chem. Soc. Japan, 1969, 42(9) 2735-2736.
Day, "Thermochromism", Chem. Rev., vol. 63, 1963, pp. 65-66.

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