Photosensitive leuco dye containing electrostatic master with pr

Details Photosensitive leuco dye containing electrostatic master with pr Photosensitive leuco dye containing electrostatic master with pr

1989-06-30

1990-07-31

Welsh, J. David

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

To produce printing surface

430 56, 430 73, 430 76, G03G 1332, G03F 720

Patent

active

049450204

ABSTRACT:
High resolution, photosensitive electrostatic master which is positive-working with a single imagewise exposure comprising a conductive support bearing a layer of a photosensitive composition consisting essentially of (A) at least one polymeric binder, (B) a hexaarylbiimidazole photooxidant, (C) leuco dye, preferably stabilized, oxidized by (B), (D) a nonionic halogenated compound, preferably a hydrocarbon, and (E) compatible plasticizer. A process of making positive images by a single imagewise exposure is described. The master is useful in making proofs that duplicate the image achieved by printing, etc.

REFERENCES:
patent: 3310401 (1967-03-01), Greig
patent: 3598592 (1971-08-01), Cescon
patent: 4111692 (1978-09-01), Etoh
patent: 4311783 (1982-01-01), Dessauer
patent: 4634657 (1987-01-01), Hollman, III
patent: 4859551 (1989-08-01), Kempf et al.

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