Patent ID: 7704414

Claim:
An image-forming method comprising: forming noble metal particles in a microsphere state by gas evaporation; a step A comprising applying an ink composition on a substrate, wherein the ink composition comprises (i) the noble metal particles in a microsphere state, (ii) an amphiphilic block copolymer having a repeating unit structure of a polyalkenyl ether, and (iii) a solvent, wherein the noble metal particles in a micro sphere state are enclosed in the amphiphilic block copolymer before applying the ink composition, and wherein the noble metal particles in a microsphere state have an average particle diameter of not more than 20 nm; a step B comprising stimulating the ink composition to destroy the enclosure of noble metal particles in a microsphere state by an amphiphilic block copolymer after step A; and a step C comprising treating the substrate on which a circuit pattern was fixed, by heat or light, to decompose and vaporize the block copolymer after step B to form a wiring pattern on the substrate.