Photoimaging systems with cyclic hydrazides

Details Photoimaging systems with cyclic hydrazides Photoimaging systems with cyclic hydrazides

1979-05-11

1981-01-27

Kimlin, Edward C.

Radiation imagery chemistry: process, composition, or product th

Dye image from radiation sensitive dye or dye former by dry...

Composition or product

430338, G03C 100, G03C 152

Patent

active

042476186

ABSTRACT:
A photosensitive system comprising in intimate admixture (1) a dye in its leuco form, (2) a photooxidant taken from the group of hexaarylbiimidazole compounds, benzophenone, para-aminophenyl ketones, polynuclear quinones and thioxanthenones, and mixtures thereof and in the presence of the admixture is a 5-member-heterocyclic phenylhydrazide compound. The cyclic phenylhydrazide can be present in the admixture, or a dry coating of the admixture, after imagewise exposure, is treated with a solution of the heterocyclic compound. The system is useful in formation of colored images.

REFERENCES:
patent: 2289367 (1942-07-01), Kendall
patent: 2728115 (1973-04-01), Poot et al.
patent: 3445234 (1969-05-01), Cescon et al.
patent: 3552973 (1971-01-01), Fishman
patent: 3585038 (1971-06-01), Cescon et al.
patent: 3753395 (1973-08-01), Poot et al.
patent: 3778267 (1973-12-01), Braunstein
patent: 3926643 (1975-12-01), Chang
patent: 4028108 (1977-06-01), Van Royen
Jaromir Kosar; Light Sensitive Systems, 1966 p. 361.
George H. Richter, Textbook of Organic Chemistry, p. 481--John Wiley & Sons, N.Y. 1952.

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