Aluminum alloy support for planographic printing plate and method for producing the same

摘要

An aluminum alloy support for a planographic printing plate is disclosed, which is an aluminum alloy plate comprising 0/=99.7 wt % and the balance of inevitable impurity elements, wherein the number of intermetallic compounds present in the arbitrary thickness direction with in 10 mu m from the plate surface is from 100 to 3,000 per mm2 and the intermetallic compound has an average particle size of from 0.5 to 8 mu m, with the intermetallic compounds having a particle size of 10 mu m or more being in a proportion by number of 2% or less. Also disclosed is a method for producing the above-described aluminum alloy support.