Process for preparing lithographic printing plate bases

B - Operations – Transporting – 41 – N

Patent

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204/20, 101/61

B41N 1/02 (2006.01) B41N 3/03 (2006.01) C25F 3/02 (2006.01) C25F 3/04 (2006.01)

Patent

CA 1155708

ABSTRACT OF THE DISCLOSURE There is disclosed a process for preparing lithographic printing plate bases, which comprises electrolytically etching a sheet made of aluminum or an aluminum alloy in an aqueous electrolytic solution containing hydrochloric acid and citric or malic acid at a bath temperature of 10 to 40°C.

373569

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