Substrate for a lithographic printing plate

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

1987-12-29

1989-02-07

Crowder, Clifford D.

Metal treatment

Stock

Aluminum base

101459, 420548, C22C 2100, B41N 108

Patent

active

048029351

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 fabricated to a 0.03 to 0.6 mm thick rolled sheet.

REFERENCES:
patent: 4360461 (1982-11-01), Gray
patent: 4672022 (1987-06-01), Reiss

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