| 摘要 |
PURPOSE:To improve slow coloring speed and low speed for achievable density while maintaining high rigidity of coloring image, by incorporating polyvalent metal salt of carboxylated terpene phenol resin and/or reaction product of a carboxylated terpene phenol resin, aromatic carboxylic acid and polyvalent metal compound in a developer layer. CONSTITUTION:Polyvalent metal salt of carboxylated terpene phenol resin can be produced by thermally melting for reaction carboxylated terpene phenol resin with polyvalent metal oxide, hydroxide, chloride, carbonate, sulfate, etc., in the presence of inorganic ammonium salt. Reaction product of carboxylated terpene phenol resin, aromatic carboxylic acid and polyvalent metal compound can be produced by uniformly mixing and reacting carboxylated terpene phenol resin, aromatic carboxylic acid and polyvalent metal compound. |
