Process for producing aluminum support for lithographic printing

Details Process for producing aluminum support for lithographic printing Process for producing aluminum support for lithographic printing

1984-09-26

1986-03-18

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

20412943, 20412975, C25D 1116, C25F 304

Patent

active

045766860

ABSTRACT:
A process for producing an aluminum support for a lithographic printing plate is described, comprising a step of electrolytically graining the surface of an aluminum plate in an aqueous solution of electrolyte comprising hydrochloric acid and nitric acid in a ratio by weight from 1/1 to 1/3.5 by applying an electric current having an asymmetrical alternating wave form.

REFERENCES:
patent: 3887447 (1975-06-01), Sheasby
patent: 4072589 (1978-02-01), Golda
patent: 4087341 (1978-05-01), Takahashi
patent: 4294672 (1981-10-01), Ohba
patent: 4468295 (1984-08-01), Pliefke
patent: 4476006 (1984-10-01), Ohba
patent: 4502925 (1985-03-01), Walls

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