METHOD OF MANUFACTURING SURFACE BLACKENED COPPER METAL, METHOD OF MANUFACTURING BASE MATERIAL WITH CONDUCTOR LAYER PATTERN, BASE MATERIAL WITH CONDUCTOR PATTERN, AND ELECTROMAGNETIC WAVE SHIELDING MEMBER USING THE BASE MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a method of manufacturing a copper metal layer whose surface is blackened with good mass-productivity.;SOLUTION: In the method of manufacturing a pattern copper metal layer whose surface is blackened using a conductive base material 1 for plating, the conductive base material 1 for plating has an insulating layer 3 formed on a surface of a conductive base material 2 and also has a pattern of a recessed portion 4 which is wide in an opening direction and for forming plating, formed in the insulating layer 3. Following steps are carried out in one copper pyrophosphate plating bath, a conductive layer forming step of forming the copper metal layer by depositing copper metal in the recessed portion 4 of the conductive base material 1 for plating with first current density, and a blackening processing step of depositing copper metal on a surface of the copper metal layer with second current density larger than the first current density so that the surface may become black.;COPYRIGHT: (C)2009,JPO&INPIT