Abstract: There is provided an apparatus for forming a three-dimensional object having a desired decoration. The apparatus for forming a three-dimensional object configured to form a three-dimensional object includes: a head for reflective ink configured to form a light reflection layer, a head for decorative ink, a head for transparent ink, a main scanning driving unit and a sub-scanning driving unit. At least the head for decorative ink and the head for transparent ink are arranged to be positionally offset in a sub-scanning direction, the head for reflective ink, the head for decorative ink and the head for transparent ink are configured to form a transparent layer between the light reflection layer and a decorative layer, thereby forming the decorative layer, the transparent layer and the light reflection layer in corresponding order from a surface layer-side of the three-dimensional object towards an inner side of the three-dimensional object.

Abstract: There is provided a method for forming a three-dimensional object having a desired decoration. The method using an apparatus for forming a three-dimensional object configured to form a three-dimensional object includes: a head for reflective ink configured to form a light reflection layer, a head for decorative ink, a head for transparent ink, a main scanning driving unit and a sub-scanning driving unit. At least the head for decorative ink and the head for transparent ink are arranged to be positionally offset in a sub-scanning direction, the head for reflective ink, the head for decorative ink and the head for transparent ink are configured to form a transparent layer between the light reflection layer and a decorative layer, thereby forming the decorative layer, the transparent layer and the light reflection layer in corresponding order from a surface layer-side of the three-dimensional object towards an inner side of the three-dimensional object.

Abstract: [Object] It is an object to provide a method for forming a three-dimensional object that suppresses generation of streaks on the three-dimensional object, which streaks are parallel to a main scanning direction. [Means of Realizing the Object] A method for forming a three-dimensional object includes a slice information calculation step (step ST23) of dividing three-dimensional data of the three-dimensional object into a plurality of layers so as to calculate cross-sectional slice information of each of the layers; and a unit-layer formation step (step ST27) of forming each of the layers based on the cross-sectional slice information. The unit-layer formation step (step ST27) is repeated a plurality of times. The unit-layer formation step (step ST27) includes a printing step (step ST27A) of extruding inks onto a work surface while moving the extruders in the main scanning direction so as to form a single print path.

Abstract: A three-dimensional object shaping method for shaping a three-dimensional object by layering a unit layer formed using a colored ink of one or more colors, the method including a slice information calculating process of calculating a plurality of pieces of cross-sectional slice information from three-dimensional data including color data, a halftone processing process of carrying out a halftone process using a dither matrix on at least one part of the color data with respect to each layer of the plurality of pieces of cross-sectional slice information and carrying out the halftone process so that a pattern of the dither matrix used with respect to at least two of the plurality of pieces of cross-sectional slice information differs, and a unit layer forming process of forming the unit layer based on the cross-sectional slice information subjected to the halftone process.

Abstract: An inkjet forming method is provided and is a three-dimensional object forming method for forming a three-dimensional object in which a target object and a removable portion are integrally formed by vertically stacking a plurality of forming layers in a vertical direction. The inkjet forming method includes: forming the forming layer to include a target layer to be the target object after shaping and a removable layer to be the removable portion after shaping; with respect to the forming layers being vertically stacked in the vertical direction, forming the removable layer to be arranged at an outside of the target layer, and forming an outer contour of the removable layer disposed at a lower side outward than an outer contour of the removable layer disposed at an upper side; and during forming the forming layers, forming the target layer and the removable layer simultaneously with ink droplets ejected by an inkjet printing.

Abstract: There is provided an apparatus for forming a three-dimensional object having a desired decoration. The apparatus for forming a three-dimensional object configured to form a three-dimensional object includes: a head for reflective ink configured to form a light reflection layer, a head for decorative ink, a head for transparent ink, a main scanning driving unit and a sub-scanning driving unit. At least the head for decorative ink and the head for transparent ink are arranged to be positionally offset in a sub-scanning direction, the head for reflective ink, the head for decorative ink and the head for transparent ink are configured to form a transparent layer between the light reflection layer and a decorative layer, thereby forming the decorative layer, the transparent layer and the light reflection layer in corresponding order from a surface layer-side of the three-dimensional object towards an inner side of the three-dimensional object.

Abstract: A color adjustment unit in a shaping controller includes a 3D/2D conversion unit which converts 3D data representing a three-dimensional object having colored layers formed on the surface thereof into 2D data; a two-dimensional color patch data creating unit which creates, as two-dimensional color patch data, a plurality of 2D images in which at least one kind of parameter of a plurality of kinds of parameters related to a color of each layer of the colored layers in the converted 2D data is set at a plurality of different levels; a three-dimensional color patch data creating unit which applies thickness information about thicknesses of the colored layers depending on the number of layers of the colored layers to the two-dimensional color patch data to create three-dimensional color patch data; and a color patch layering unit which layers three-dimensional color patches depending on the thickness according to the three-dimensional color patch data.

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: There is provided a method for forming a three-dimensional object having a desired decoration. The method using an apparatus for forming a three-dimensional object configured to form a three-dimensional object includes: a head for reflective ink configured to form a light reflection layer, a head for decorative ink, a head for transparent ink, a main scanning driving unit and a sub-scanning driving unit. At least the head for decorative ink and the head for transparent ink are arranged to be positionally offset in a sub-scanning direction, the head for reflective ink, the head for decorative ink and the head for transparent ink are configured to form a transparent layer between the light reflection layer and a decorative layer, thereby forming the decorative layer, the transparent layer and the light reflection layer in corresponding order from a surface layer-side of the three-dimensional object towards an inner side of the three-dimensional object.

Abstract: [Object] It is an object to provide a method for forming a three-dimensional object that suppresses generation of streaks on the three-dimensional object, which streaks are parallel to a main scanning direction. [Means of Realizing the Object] A method for forming a three-dimensional object includes a slice information calculation step (step ST23) of dividing three-dimensional data of the three-dimensional object into a plurality of layers so as to calculate cross-sectional slice information of each of the layers; and a unit-layer formation step (step ST27) of forming each of the layers based on the cross-sectional slice information. The unit-layer formation step (step ST27) is repeated a plurality of times. The unit-layer formation step (step ST27) includes a printing step (step ST27A) of extruding inks onto a work surface while moving the extruders in the main scanning direction so as to form a single print path.

Abstract: A color adjustment unit in a shaping controller includes a 3D/2D conversion unit which converts 3D data representing a three-dimensional object having colored layers formed on the surface thereof into 2D data; a two-dimensional color patch data creating unit which creates, as two-dimensional color patch data, a plurality of 2D images in which at least one kind of parameter of a plurality of kinds of parameters related to a color of each layer of the colored layers in the converted 2D data is set at a plurality of different levels; a three-dimensional color patch data creating unit which applies thickness information about thicknesses of the colored layers depending on the number of layers of the colored layers to the two-dimensional color patch data to create three-dimensional color patch data; and a color patch layering unit which layers three-dimensional color patches depending on the thickness according to the three-dimensional color patch data.

Abstract: A three-dimensional object shaping method for shaping a three-dimensional object by layering a unit layer formed using a colored ink of one or more colors, the method including a slice information calculating process of calculating a plurality of pieces of cross-sectional slice information from three-dimensional data including color data, a halftone processing process of carrying out a halftone process using a dither matrix on at least one part of the color data with respect to each layer of the plurality of pieces of cross-sectional slice information and carrying out the halftone process so that a pattern of the dither matrix used with respect to at least two of the plurality of pieces of cross-sectional slice information differs, and a unit layer forming process of forming the unit layer based on the cross-sectional slice information subjected to the halftone process.

Abstract: An inkjet forming method is provided that manufactures a three-dimensional object by vertically stacking multiple horizontally extending layers. The contour of a region in one layer, constituting a target object, in the horizontal direction is contiguous with a region in the layer constituting a removable portion and is vertically contiguous with a region constituting the target object in another layer immediately above and vertically contiguous with the one layer. At least a part of the region constituting the removable portion forms a contour of the layer in the horizontal direction. When a target layer is formed by the inkjet forming method, entirety of the target layer and an entire contour of the target layer in the horizontal direction are vertically contiguous with an inner part of another layer immediately below the target layer than a contour of the layer immediately below the target layer in the horizontal direction.

Abstract: There is provided an apparatus for forming a three-dimensional object having a desired decoration. The apparatus for forming a three-dimensional object configured to form a three-dimensional object includes: a head for reflective ink configured to form a light reflection layer, a head for decorative ink, a head for transparent ink, a main scanning driving unit and a sub-scanning driving unit. At least the head for decorative ink and the head for transparent ink are arranged to be positionally offset in a sub-scanning direction, the head for reflective ink, the head for decorative ink and the head for transparent ink are configured to form a transparent layer between the light reflection layer and a decorative layer, thereby forming the decorative layer, the transparent layer and the light reflection layer in corresponding order from a surface layer-side of the three-dimensional object towards an inner side of the three-dimensional object.