Photoconductive plate for printing and a method for the preparat

Details Photoconductive plate for printing and a method for the preparat Photoconductive plate for printing and a method for the preparat

1980-08-07

1982-11-02

Martin, Jr., Roland E.

Radiation imagery chemistry: process, composition, or product th

Imaged product

Including resin or synthetic polymer

430 17, 430 49, 430 97, 430330, 101467, 101470, 4273722, G03G 1332

Patent

active

043574033

ABSTRACT:
A photoconductive plate for printing use having imaged and non-imaged portions. The plate comprises an electroconductive support and a photoconductive layer including a photoconductive material comprising an organic photoconductive pigment and a binder comprising an alkaline soluble phenol resin. The photoconductive plate is subjected to heat treatment at a sufficiently elevated temperature prior to removal of portions of the photoconductive layer so that at least 80% by volume of the non-imaged portion of the photoconductive layer is removed when the photoconductive plate is subjected to treatment with a removing solution. A method for preparing a printing plate. An image is formed on a photoconductive layer and the non-imaged portion of the photoconductive layer is removed by treating the layer with a removing solution. The photoconductive plate is subjected, prior to removal of the non-imaged portion of the photoconductive layer, to an elevated temperature sufficient so that at least 80% by volume of the photoconductive layer is removed in the non-imaged portion when the photoconductive layer is treated with a removing solution.

REFERENCES:
patent: 3121009 (1964-02-01), Giaimo
patent: 3230081 (1966-01-01), Tomanek et al.
patent: 3305359 (1967-02-01), Delmont
patent: 3615385 (1971-10-01), Lind
patent: 3745002 (1973-07-01), Honjo et al.

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