INK COMPOSITION CONTAINING SOFT MATERIAL, TECHNIQUE FOR FORMING SOLID USING SUCH COMPOSITION, AND THREE-DIMENSIONAL PRINTING TECHNIQUE

摘要

A printing ink composition is disclosed which comprises a composition containing a polymer component including vinyl acetate. A printing method using such an ink composition is also disclosed. A method for forming a solid utilizing such a printing method is further disclosed wherein a solid is formed by stacking layers on top of one another, which layers are so designed to form the cross-sectional shape of the solid. The ink composition contains (a) a polymer component including a homopolymer of vinyl acetate, its partial hydrolysis product, a copolymer between vinyl acetate and one or more monomers selected from acrylic esters and the like, or its partial hydrolysis product, and (b) a compound containing (i) a component including one or more materials selected from saps and the like or (ii) a component selected from artificial saps which respectively include the main components of the saps and the like.