Manufacture of a planographic printing plate by making silver ha

Details Manufacture of a planographic printing plate by making silver ha Manufacture of a planographic printing plate by making silver ha

1975-02-18

1976-11-02

Kimlin, Edward G.

Gas separation: apparatus

Electric field separation apparatus

Electrode cleaner, apparatus part flusher, discharger, or...

101455, 101456, 101463, 101466, G03F 702

Patent

active

039895220

ABSTRACT:
A method for the preparation of a planographic printing plate wherein a photoexposed and developed photographic material containing a pattern of poorly water-soluble silver salt is treated with an aqueous liquid which contains in dissolved state an organic cationic compound or mixture of organic cationic compounds, iodide ions, and a sufficient amount of hydronium ions (H.sub.3 O.sup.+) for creating an acidic medium, said liquid being capable of making an unexposed and undeveloped photographic silver halide material as defined in the disclosure sufficiently receptive for a lithographic ink.

REFERENCES:
patent: 3161508 (1964-12-01), Hepher et al.
patent: 3454398 (1969-07-01), Wendt
patent: 3676125 (1972-07-01), De Haes
patent: 3679412 (1972-07-01), Guthrie et al.
patent: 3759850 (1973-09-01), Lehman
patent: 3808002 (1974-04-01), Eckert et al.
patent: 3819374 (1974-06-01), Kemp

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