Planographic printing plate aluminum alloy plate, a lithographic printing plate support, a manufacturing method of a lithographic printing plate precursor and lithographic printing plate aluminum alloy plate

摘要

PPROBLEM TO BE SOLVED: To provide an aluminum alloy plate for planographic printing with excellent resistance to dot-like stain and a manufacturing process thereof, and also to provide a support body for planographic printing using it and an original plate for planographic printing plate, especially an original plate for planographic printing plate which can be developed on-press. PSOLUTION: The aluminum alloy plate for planographic printing plate includes 0.08 to 0.45 mass% of Fe and 0.05 to 0.20 mass% of Si, the remainder being an aluminum alloy plate comprised of an obligatory impurity and Al, wherein an Fe-Al intermetallic compound being contained at 0.05% or less. PCOPYRIGHT: (C)2010,JPO&INPIT