Abstract: To provide a three-dimensional building apparatus and a three-dimensional building method capable of generating a three-dimensional object with sufficient adhesion between unit layers even when a photocurable material having larger cure shrinkage due to photocuring placed under a low temperature condition is used as a model material and a support material. A three-dimensional building apparatus includes: a stage configured to hold a deposition structure formed by depositing unit layers; an ejector configured to eject a photocurable model material and a photocurable support material toward the uppermost surface of the deposition structure while moving relative to the stage; an emitter configured to emit an active beam light capable of curing the photocurable model material and the photocurable support material; and a heater configured to heat the uppermost surface of the deposition structure in forming a workpiece.

Abstract: Provided are a three-dimensional building apparatus and a three-dimensional building method capable of generating a three-dimensional object with sufficient adhesion between unit layers without performing a special process before curing a model material and a support material. A three-dimensional building apparatus includes: a stage configured to hold a deposition structure formed by depositing unit layers; an ejector configured to eject droplets of a curable model material and a curable support material toward the uppermost surface of the deposition structure; a curing device configured to cure the uppermost surface; and an ejection controller configured to perform an ejection control of the ejection device so as to reduce the deposition rate on the lower layer side of the workpiece and to increase the deposition rate on the upper layer side of the workpiece.

Abstract: A method for producing a three-dimensional object includes depositing an ink layer over an upper surface of a table so as to form a removal portion with which the three-dimensional object is removed off the upper surface of the table. The ink layer is deposited over a planar upper surface of the removal portion formed in the removal portion forming step so as to form the three-dimensional object over the planar upper surface of the removal portion. The removal portion includes a support material and a mixture material. The support material supports the three-dimensional object. The mixture material is less adhesive to the upper surface of the table than the support material is adhesive to the upper surface of the table.