Abstract: A three-dimensional object building method and a three-dimensional printer capable of accurately reproducing the color of a three-dimensional object on three-dimensional data are provided. The three-dimensional object building method includes a slice information calculating process that divides three-dimensional data of a three-dimensional object into a plurality of layers to calculate cross-sectional slice information of each of the layers; a unit layer forming process that forms each layer based on the cross-sectional slice information, and repeats the unit layer forming process a plurality of times; a parameter value determining process that determines a value of a color adjustment parameter used for adjusting a color parameter for forming a color portion, according to a value of an angle of a surface of the color portion of the three-dimensional object relative to a reference plane; and a parameter reflecting process that reflects the color adjustment parameter on the cross-sectional slice information.

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: Even when dots of ink for forming layers that constitute a three-dimensional object are reduced in size to produce a gap therebetween, the present disclosure suppresses an adverse effect caused by the gap. A control part in a manufacturing device for a three-dimensional object controls a head, such that the center of an ink droplet ejected for forming a segment layer does not overlap the center of an ink droplet that forms another segment layer immediately below, and that the ink droplet is ejected at a resolution different from the resolution of the other segment layer immediately below the segment layer being formed.

Abstract: [Object] In a method for producing a three-dimensional object using nozzles, at least a partial recovery is realized from an adverse effect caused by an abnormal nozzle that is abnormal in the amount of ejection. [Means of Realizing the Object] Over a lower layer (L1a), an upper layer (L1b) is formed in such a manner that hitting positions of droplets ejected from nozzles (6) are different from hitting positions of droplets ejected in forming the lower layer. In forming the upper layer, a droplet ejected from a recovery nozzle (E) hits a hitting position of a droplet ejected from an abnormal nozzle (A) in forming the lower layer. The amount of ejection from the recovery nozzle (E) is adjusted based on the amount of ejection from the abnormal nozzle.

Abstract: A three-dimensional-object forming apparatus generates a three-dimensional object such that from a formation intermediate product obtained by sequentially depositing unit layers each including a build material and/or a support material on a work surface, a support made of the support material is removed. The three-dimensional-object forming apparatus includes a position determiner and a roughener. The position determiner determines a position of the build material and a position of the support material to make a partial surface contact between the three-dimensional object and the support. The roughener roughens a specific area defined by an outer surface among outer surfaces of the build material located at the position determined by the position determiner. The outer surface is parallel with the work surface.

Abstract: A three-dimensional-object forming apparatus generates a three-dimensional object such that from a formation intermediate product obtained by sequentially depositing unit layers each including a curable build material and/or a curable support material, a support made of the support material is removed. The apparatus includes a stage, an ejection unit, a curing unit, and a composite arranger. On the stage, a multilayer structure of the unit layers is placeable. The ejection unit ejects the build and support materials toward an uppermost surface of the multilayer structure while moving relative to the stage. The curing unit cures the build and support materials on the uppermost surface. The composite arranger controls the ejection and curing units, when the support includes a foundation between the object and the stage, to cause the build and support materials to coexist in a lowermost surface region of the object contacting the foundation.

Abstract: [Object] With the present invention, it is possible to, for example, more appropriately flatten a layer of ink during formation of a three-dimensional object. [Means of Realizing the Object] A forming apparatus for forming a three-dimensional object by additive manufacturing include an inkjet head, flattening means, a platform, a main scanning driver, and a deposition direction driver to change a head-to-platform distance being a distance between the inkjet head and the platform. In an operation of forming a layer of ink, the forming apparatus causes a plurality of times of the first direction scanning intended to cause the inkjet head to move in one direction with respect to an identical position of the three-dimensional object in the middle of formation, and increases the head-to-platform distance during a main scanning operation to be performed later than the head-to-platform distance during the main scanning operation to be performed earlier in an operation of forming a layer of ink.

Abstract: Provided is an apparatus for manufacturing a three-dimensional object that may allow a support material to land on a table before a modeling material irrespective of the moving direction of a carriage. The apparatus includes a modeling material head that ejects an ink for object shaping, support material heads that eject an ink for supporting the three-dimensional object, color ink heads that eject color inks, curing units for curing the ejected inks, and a flattening roller unit with a flattening roller used to flatten surfaces of the ejected inks. In the apparatus, one of the curing units, the flattening roller unit, one of the support material heads, the modeling material head, the color ink heads, the other support material head, and the other curing unit are arranged and mounted in the carriage in the mentioned order from one side to the other in the main scanning direction.

Abstract: [Object] A method for manufacturing a three-dimensional object is provided. The method reduces the difference between the amount of build material used and the amount of decorative ink used. [Means of Realizing the Object] A method for manufacturing a three-dimensional object including an object body portion (A) and a decorative portion (C) is provided. The method includes forming the object body portion (A) from at least decorative ink and build material and forming the decorative portion (C) from the decorative ink. The decorative portion (C) covers the object body portion (A).

Abstract: A forming apparatus is configured to form a three-dimensional object, and includes an extrusion head, The extrusion head includes a basic-color extrusion head and a lighter-color extrusion head. The basic-color extrusion head is configured to extrude a basic-color build material having a basic color for expressing a mixed color. The lighter-color extrusion head is configured to extrude a lighter-color build material having a color lighter than the basic-color build material extruded from the basic-color extrusion head.

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.

Abstract: A shaping device that shapes a 3D object, including: a discharging head that discharges an ultraviolet curing type ink as a material of shaping; an ultraviolet light source; a main scanning driving unit; a sub-scanning driving unit, a flattening roller serving as a flattening unit, and a controller, where the controller causes the inkjet head to carry out the main scanning operation for plural times with respect to each position in a plane orthogonal to a layering direction, and when an integrated light amount of the ultraviolet ray irradiated per unit area in one main scanning operation is defined as a unit area light amount, the unit area light amount in some main scanning operations is made smaller than the unit area light amount in the other main scanning operations in the plural times of main scanning operations carried out with respect to each position.

Abstract: The method includes a three-dimensional structure forming step of stacking the ink layers to form a three-dimensional structure including the three-dimensional object and a support member that supports the three-dimensional object, and a separating step of separating the support member from the three-dimensional object subsequent to the three-dimensional structure forming step. Subsequent to the separating step, the support member is combined with the three-dimensional object to protect the three-dimensional object.

Abstract: A three-dimensional shaping device that discharges an ultraviolet curing ink from an ink jet head toward a working surface and curing the ink to shape a three-dimensional object on the working surface; the three-dimensional shaping device includes a control unit that executes a shaping control related to shaping of the three-dimensional object; and an input unit, connected to the control unit, for setting a shaping mode prepared in advance according to a shaping condition of the three-dimensional object; wherein the control unit executes the shaping control based on shaping data of the three-dimensional object including a color profile related to a hue of the three-dimensional object; the color profile is associated with the shaping mode; and when the shaping mode is set through the input unit, the control unit executes the shaping control based on the color profile associated with the set shaping mode.

Abstract: To provide a three-dimensional object, a three-dimensional object manufacturing method, and a 3D data generation program that can facilitate handling compared to the conventional art even if the object is large. A three-dimensional object includes: a shell portion internally formed with a cavity; and a filling material that is filled in the cavity, and the filling material has a smaller specific gravity than the shell portion. The shell portion is configured by a plurality of parts, and the shell portion is formed with a filling material introducing port for introducing the filling material into the cavity when filling the filling material into the cavity, and a gas discharging port for discharging gas in the cavity to outside the cavity when filling the filling material into the cavity.

Abstract: A method includes an object segment forming step of forming a plurality of object segments and a joining step of joining the plurality of object segments to each other via joint surfaces. The object segment forming step includes forming a first object segment having an upper surface serving as a first joint surface and a second object segment having an upper surface serving as a second joint surface or forming the first object segment having a lower surface serving as the first joint surface and the second object segment having a lower surface serving as the second joint surface.

Abstract: A forming apparatus configured to form a three-dimensional object includes a head configured to extrude build materials and a controller configured to control extrusion of the materials by the head. The three-dimensional object includes a colored region that is colored using a coloring material among the materials. The head includes a head for coloring that is an extrusion head configured to extrude the coloring material in multi-step variable amounts of droplets. The controller is configured to control the amount of droplets of the coloring material extruded by the head for coloring.

Abstract: A shaping device that shapes a 3D object includes: an inkjet head, which is a discharging head and discharges a material of shaping; a main scanning driver; a layering direction driver; and a controller, where the controller causes the inkjet head to carry out a plurality of main scanning operations with respect to each position within a plane orthogonal to a layering direction, and when an amount of the material of shaping discharged from the inkjet head per unit area in one main scanning operation with respect to a region to which the material of shaping is to be discharged is defined as a unit area discharging amount, the unit area discharging amount in some main scanning operations is less than the unit area discharging amount in the other main scanning operations of the plurality of main scanning operations carried out with respect to each position.

Abstract: A shaping device that shapes a three-dimensional (3D) object includes discharging heads and a controller; where the discharging heads include at least a black head that discharges a black material, and a coloring material head that discharges a material for coloring of a chromatic color; the controller causes the discharging heads to form a coloring region colored using at least the material for coloring, and a black region colored in black using at least the black material in at least one part of a portion where a hue is externally identifiable in the 3D object; and form the black region to be thicker than the coloring region with respect to a thickness in a normal direction perpendicular to a surface of the 3D object.

Abstract: A shaping device that shapes a three-dimensional (3D) object includes discharging heads that each discharges a material of shaping; and a controller; wherein the discharging heads include at least a black material head that discharges a black material, and a translucent material head that discharges a material having translucency; the controller causes the discharging heads to form a black region colored in black using the black material in at least one part of a portion where a hue is externally identifiable in the 3D object; and the black region includes an inner side region, which is a first region, colored in black using the black material, and a surface side region, which is a second region, covering the inner side region from an outer side, having a higher transmittance of light than the inner side region and formed using at least the material having translucency.