Printing plates

Details Printing plates Printing plates

C - Chemistry, Metallurgy

25

D

204/86.5

C25D 5/44 (2006.01) B41N 3/03 (2006.01) C25F 3/04 (2006.01)

Patent

CA 1109020

ABSTRACT OF THE DISCLOSURE Aluminium or aluminium alloy is electrolytically grained using alternating current and an aqueous electrolyte comprising specified amounts of hydrochloric acid and a monocarboxylic acid containing from 1 to 4 carbon atoms, preferably acetic acid. The grained aluminium or alloy may be coated with a light sensitive layer to form a light sensitive plate for use in the production of lithographic printing plates by photomechanical techniques.

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