able lithographic printing plate with diazo resinUS5187046 *Mar 18, 1991Feb 16, 1993Aluminum Company Of AmericaArc-grained lithoplateUS5462609 *Jan 11, 1993Oct 31, 1995Aluminum Company Of AmericaElectric arc method for treating the surface of lithoplate and other metalsUS5481084 *Oct 8, 1993Jan 2, 1996Aluminum Company Of AmericaMethod for treating a surface such as a metal surface and producing pr