A complex, which is obtained from a copper salt and can become the central metal of the copper phthalocyanine, is attached to be held on the surface of a solid carrier, and in such a condition, phthalic anhydride or its derivative and carbamylurea as a nitrogensource are subjected to reaction with metal fine particles formed on the surface of the solid carrier. 銅フタロシアニンの中心金属となり得る銅塩から得られる錯体を固体担体の表面上に付着させて担持させ、その状態で、無水フタル酸若しくはその誘導体と、窒素源としてカルバミル尿素とを固体担体の表面上に形成された金属微粒子に反応させる。 - 特許庁