| 摘要 |
PROBLEM TO BE SOLVED: To provide an aluminum alloy plate for a lithographic printing plate, from which a lithographic printing plate excellent in the resistance to dotted antifoul can be obtained, and a support for a lithographic printing plate employing thereof and an original plate for the lithographic printing plate, especially an on-board developable original plate for the lithographic printing plate. SOLUTION: In the manufacturing method of the aluminum alloy plate for the lithographic printing plate for manufacturing the aluminum alloy plate for the lithographic printing plate, this manufacturing method of the aluminum alloy plate for the lithographic printing plate is equipped with the semi-continuous casting process for forming an ingot having ≤0.15 mass% of Fe from molten aluminum alloy metal, the facing process for making a plate by applying facing to the ingot formed in the semi-continuous casting process, the hot rolling process for obtaining a rolled sheet by applying rolling to the tabular ingot after the facing process, and the cold rolling process for obtaining an aluminum alloy plate of ≥0.1 mm thick by applying cold rolling to the rolled sheet after the hot rolling process under the condition that the rolling reduction is larger than 88%. COPYRIGHT: (C)2010,JPO&INPIT
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