Three-dimensional forming apparatus and method of forming three-dimensional object

Abstract

A three-dimensional forming apparatus includes: an ejecting portion that ejects a forming material from an opening portion to a forming table; a moving portion that changes a relative position between the forming table and the ejecting portion; and a controller that controls the ejecting portion and the moving portion. The ejecting portion includes a tip surface having the opening portion. An external shape of the opening portion is polygonal. When the three-dimensional object is formed, the controller controls the moving portion such that a distance (Gp) between the tip surface and an estimated position to which the forming material is to be ejected from the ejecting portion satisfies the following Expression (1). (Sq1×Gp)/Vt<1.0  (1) where Sq1 represents an area of the opening portion, and Vt represents a volume of the forming material that is ejected per unit moving amount by the ejecting portion.

Dependencies are inferred from the claim text.