C - Chemistry – Metallurgy – 25 – D
Patent
C - Chemistry, Metallurgy
25
D
204/11.5, 204/24
C25D 11/06 (2006.01) G03F 7/00 (2006.01)
Patent
CA 1175384
ABSTRACT Aluminum sheets for lithographic printing plate production are anodised firstly in a phosphoric acid electrolyte and secondly in in electrolyte containing a major amount of phosphoric acid and a minor amount of sulphuric acid.
396367
Bereskin & Parr
Vickers Plc
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