Process for making photosensitive lithographic printing plates i

Details Process for making photosensitive lithographic printing plates i Process for making photosensitive lithographic printing plates i

1977-04-18

1978-04-25

Welsh, John D.

Gas separation: apparatus

Electric field separation apparatus

Electrode retaining or supporting means

96 33, 427419, 148 6, 148 627, G03C 194

Patent

active

040860922

ABSTRACT:
A method for preparing aluminum based lithographic printing plates which comprises coating at least one surface of an aluminum base sheet with a potassium zirconium fluoride solution, thereafter treating the coated, aluminum plate with a stratum of a sodium silicate solution and then applying to said surface a lithographically suitable light sensitive composition to yield the desired photosensitive lithographic printing plate of improved characteristics.

REFERENCES:
patent: 2882153 (1959-04-01), Cohn
patent: 3148984 (1964-09-01), Harper
patent: 3682713 (1972-08-01), Ries et al.
patent: 3912548 (1975-10-01), Faigen

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