An image-forming method: by superposing a heat-sensitive transfer sheet on a heat-sensitive transfer image-receiving sheet so that a receptor layer can be contacted with a thermal transfer layer; and providing thermal energy in accordance with image signals;in which the heat-sensitive transfer image-receiving sheet comprises the receptor layer containing one of polyester and/or polycarbonate polymers, vinyl chloride polymers and/or a polymer latex; andin which the heat-sensitive transfer sheet comprises the thermal transfer layer containing a dye represented by formula (1) or (2):