Combination of intermediate transfer sheet and thermal transfer medium, and print forming method

A print forming method comprising:

• providing:
• a thermal transfer sheet comprising a substrate, a primer layer, and a colorant layer, wherein the primer layer and the colorant layer are layered in this order on one surface of the substrate;
• an intermediate transfer medium comprising another substrate, a protective layer, and a receiving layer, wherein the protective layer and the receiving layer are layered in this order on one surface of the another substrate;
• and a transfer receiving article;
• forming a thermal transfer image:
• transferring a colorant contained in the colorant layer of the thermal transfer sheet onto the receiving layer of the intermediate transfer medium to form a thermal transfer image on the receiving layer;
• and
• forming a print:
• transferring the receiving layer, on which the thermal transfer image has been formed, onto the transfer receiving article together with the protective layer,
• wherein the primer layer of the thermal transfer sheet used to form the thermal transfer image contains one or more selected from the group consisting of particles derived from colloidal inorganic particles, polyvinyl alcohol resins, polyvinyl pyrrolidone resins, and polyurethane resins.