Foil image formation method

The present invention addresses at least the problem of providing a method for forming a high-resolution foil image regardless of the hydrophilicity of a recording medium. In order to solve said problem, the present invention provides a method wherein an adhesive ink that is formed by dispersing or dissolving a polymer resin in water and in a water-soluble organic solvent, or an active-ray-curable inkjet ink that undergoes a temperature-induced sol-gel phase transition is used as an adhesive for a foil, the adhesive is applied by means of inkjet printing, and a foil image is formed. The polymer resin of the adhesive ink is a polymer of a monomer that includes (meth)acrylic acid and a (meth)acrylic acid alkyl ester that has a C2-12 alkyl group, the acid value of the polymer resin being 50-120 mg KOH/g, and the glass transition temperature of the polymer resin being 30-110 °C. The active-ray-curable inkjet ink includes 0.5-10 mass% of a gelling agent with respect to the total mass of the active-ray-curable inkjet ink. The difference between the temperature of the recording medium when the active-ray-curable inkjet ink makes impact and the sol-gel-phase-transition temperature of the active-ray-curable inkjet ink is 30 °C or more.