| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of an aluminum alloy plate for a lithographic printing plate which is superior in plate wear resistance and printability and enables formation of uniform and minute etching pits. SOLUTION: The aluminum alloy plate for the lithographic printing plate comprises, by mass%, 0.1-0.6% Fe, 0.02-0.2% Si, 0.001-0.02% Cu, 0.01-0.1% Zn, 0.005-0.1% Mg, 0.001-0.05% Ti and the balance being Al and unavoidable impurities. The manufacturing method of this aluminum alloy plate includes a step of removing a surface layer of the aluminum alloy plate, after the plate is subjected to hot rolling, either during cold rolling performed in a plurality of times or after completion of the final cold rolling, wherein the depth of 0.1% or more of the plate thickness thereof is removed. COPYRIGHT: (C)2009,JPO&INPIT
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