Method for producing three-dimensional object and forming apparatus

Abstract

The thickness of a surface decoration layer is increased without significantly deteriorating the representation of the tone and the gradation of the color. A method for producing a three-dimensional object includes forming a surface decoration layerusing white material, at least one coloring materialother than white, and clear material, and using the at least one coloring materialand the clear material. The surface decoration layerincludes a plurality of layers formed by building a plurality of layer bodies one above the other. At least one of the layer bodies is formed with the white materialin at least one location among the lowermost layer of the surface decoration layerand a region of an internal formation regionclose to the surface decoration layer. The internal formation region constitutes an internal portion of the three-dimensional object. The plurality of layers constituting the surface decoration layerincludes the same color. When the plurality of layers are deposited, the density of the color visually recognized when the three-dimensional object is observed is adjusted to be greater than the density of the color of each of the plurality of layers.