Light-sensitive o-quinonediazide containing planographic printin

Details Light-sensitive o-quinonediazide containing planographic printin Light-sensitive o-quinonediazide containing planographic printin

1977-01-04

1978-10-31

Bowers, Jr., Charles L.

Gas separation: apparatus

Electric field separation apparatus

Electrode retaining or supporting means

96 33, 96 49, 96 75, 96115R, G03C 160, G03F 708

Patent

active

041232798

ABSTRACT:
A method for increasing the ink-receptivity of a light-sensitive planographic printing plate comprising a support having thereon a light-sensitive layer comprising an o-quinonediazide based light-sensitive material which is rendered alkali solution-soluble by irradiation of active light and a condensate of an aldehyde and a substituted phenol represented by the formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each is a hydrogen atom, an alkyl group, or a halogen atom, and R.sub.3 is an alkyl group or a cycloalkyl group.

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patent: 3644118 (1972-02-01), Agnihotri
patent: 3647443 (1972-03-01), Rauner et al.
patent: 3666473 (1972-05-01), Colom et al.
patent: 3759711 (1973-09-01), Rauner et al.
patent: 3782939 (1974-01-01), Bonham
patent: 3859099 (1975-01-01), Petropoulos

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