Patent ID: 8440263
Filing Date: 2013-05-14
Classification: H05K

Abstract:
1. A method for forming a metallic pattern by an inkjet method, comprising: a printing process to form a pattern portion on a substrate by jetting an ink containing a precursor of a nonelectric plating catalyst; and a plating process to form a metallic pattern by nonelectric plating on the pattern portion, wherein the surface of the substrate is constituted of ink non-absorptive resin and has been subjected to a plasma treatment so as to make the sum of a polar component and a hydrogen bond component thereon of the surface free energy of the substrate not less than 5 mN/m and not more than 30 mN/m, the precursor of the nonelectric plating catalyst is present in a state of being dissolved in ink, and the ink has a pH value at 25° C. of not less than 9.0; and wherein the printing process is done after the plasma treatment.