abstract |
(57) [Problem] To form a metal thin film in a simple process by applying a paint and at an economical cost. SOLUTION: A step of forming a coating film 2 from a coating material containing colloidal particles of a noble metal or copper obtained by reducing a compound of a noble metal or copper in the presence of a polymer dispersant, and heating the coating film 2 And fusing the colloidal particles in the coating film 2 to form the metal thin film 2. |