Substrate for a lithographic printing plate

Details Substrate for a lithographic printing plate Substrate for a lithographic printing plate

C - Chemistry, Metallurgy

22

C

96/211, 75/79

C22C 21/00 (2006.01) B41N 1/08 (2006.01)

Patent

CA 1305615

ABSTRACT A substrate for a lithographic printing plate is made of a rolled aluminum alloy sheet of following composition: 0.8 to 2.0 % Fe, up to 0.8 % Si and up to 1.0 % Mn, such that the sum of the Si and Mn contents lies between 0.3 and 1.3 %, up to 0.3 % Cu, up to 0.8 % Mg, up to 2.0 % Zn and 0.3 % each of other constituents in total up to 1.0 %, rest aluminum. A process for manufacturing such a substrate is such that this composition is cast as a 5 to 12 mm thick strip then fabri- cated to a 0.03 to 0.6 mm thick rolled sheet.

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