Desensitizing ink for the receiving surface of a chemical duplic

Details Desensitizing ink for the receiving surface of a chemical duplic Desensitizing ink for the receiving surface of a chemical duplic

1979-10-09

1981-09-01

Ziegler, J.

Coating processes

Transfer or copy sheet making

Reactive components

101135, 260 18R, 260DIG38, 282 275, 427151, 525472, 525488, 525507, 525508, B41M 312

Patent

active

042872340

ABSTRACT:
A desensitizing ink for wet offset printing on the acceptor surface of a chemical duplicating set of superimposed sheets where one of the sets has an electrophilic acceptor coating and the other a nucleophilic coating for producing a chromogenic reaction wherein the nucleophilic desensitizing ink contains an alkoxylated nucleophilic compound which permits a continuous ink transfer to the water repellant zones of the wetted impression plate of an offset press and simultaneously neutralizes the corresponding zones of the acceptor surface.

REFERENCES:
patent: 3029216 (1962-04-01), Bailey et al.
patent: 3246997 (1966-04-01), Summer et al.
patent: 3477862 (1969-11-01), Forsyth, Jr.
patent: 3692548 (1972-09-01), Packer
patent: 3952117 (1976-04-01), Miyamoto

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