Patent ID: 8071178

Claim:
A method of forming a metal film, comprising: a step of forming an organic film by applying and polymerizing an undercoat composition for forming a metal film containing an addition-polymerizable monomer 1 having a carboxylic acid group or a sulfonic acid group, a monomer not having a carboxylic acid group or a sulfonic acid group contained in the addition-polymerizable monomer 1 but having 3 to 4 polymerizable unsaturated bonds in one molecule and a polymerization initiator on a substrate or film; a step of converting the carboxylic acid group or the sulfonic acid group acidic group into a metal (M1) salt by treating the organic film with an aqueous solution containing a metal (M1) ion; a step of converting the metal (M1) salt into a metal (M2) salt by treating the organic film with an aqueous solution containing a metal (M2) ion having an ionization tendency lower than the metal (M1) ion; and a step of forming a metal film on the organic film surface by reducing the metal (M2) ion.