Device for testing a resist layer on a gravure printing plate

Details Device for testing a resist layer on a gravure printing plate Device for testing a resist layer on a gravure printing plate

1982-04-28

1985-09-10

Yasich, Daniel M.

Measuring and testing

Moisture content or absorption characteristic of material

368 89, 377 20, G01N 3322, G01N 3344

Patent

active

045398399

ABSTRACT:
An inspecting liquid is dropped onto a resist layer formed on a gravure printing plate and is allowed to permeate the resist layer or gelatin resist layer to reach the printing plate so that a short circuit is formed between the inspecting liquid and the printing plate. The time required for forming the short circuit in the resist layer is measured by utilizing an oscillator pulse counting circuit to determine the conditions of the resist layer thereby to improve the quality of the finished printing plate.

REFERENCES:
patent: 2491689 (1949-12-01), Pollock
patent: 2636962 (1953-04-01), Bouyoucos
patent: 2740032 (1956-03-01), Bouyoucos
patent: 3028755 (1962-04-01), Carter
patent: 3875503 (1975-04-01), Hayashi
patent: 4103228 (1978-07-01), Ham
patent: 4206646 (1980-06-01), Spellman et al.
patent: 4209741 (1980-06-01), Coby et al.
patent: 4253064 (1981-02-01), McBride, Jr.
patent: 4394090 (1983-07-01), Hyde

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