JP2018001686A - Solid body production method and solid body production device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solid body production method and a solid body production device capable of suppressing the thinning of the color in the surface of a solid body.SOLUTION: Provided is a solid body production method comprising: a support material-fitted solid body production step where printed matters by ink are laminated to produce a support material-fitted solid body 70; and a solid body acquisition step where a support material 90 is removed from the support material-fitted solid body 70 to acquire a solid body 80. The ink includes: ink for molding to form into the material for the solid body 80; and ink for support to form into the material for the support material 90. The support material-fitted solid body production step is characterized in that, in the case a colored part by color ink for molding as the ink for molding in the solid body 80 is created, the part in contact with the colored part of the solid body 80 in the support material 90 is colored by the color ink for support as the ink for support to the color similar to the color in the colored part.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a three-dimensional object manufacturing method and a three-dimensional object manufacturing apparatus for manufacturing a three-dimensional object with an ink jet printer.

  Conventionally, a three-dimensional object manufacturing process with a support material for manufacturing a three-dimensional object with a support material in which the three-dimensional object is supported on a support material that supports the three-dimensional object by laminating a printed material with ink, and a three-dimensional object manufacturing process with a support material. There is known a three-dimensional object manufacturing method including a three-dimensional object acquisition step of removing a support material from a manufactured three-dimensional object with a support material to acquire a three-dimensional object (for example, see Patent Document 1). The ink includes modeling ink that is a material of a three-dimensional object, and white support ink that is a material of a support material. The modeling ink includes a modeling color ink for coloring at least a part of the three-dimensional object.

Japanese Patent Laid-Open No. 2006-107637

  However, in the conventional three-dimensional object manufacturing method, even if the surface of the three-dimensional object is colored with the color ink for modeling, when the three-dimensional object is obtained by removing the support material from the three-dimensional object with the support material, When the support material remains on the unevenness, there is a problem that the color of the surface of the three-dimensional object becomes white turbid and thin by the white support material.

  Then, an object of this invention is to provide the solid object manufacturing method and solid object manufacturing apparatus which can suppress that the color of the surface of a solid object becomes thin.

  The three-dimensional object manufacturing method of the present invention includes a three-dimensional object manufacturing process with a support material, in which a three-dimensional object with a support material on which the three-dimensional object is supported is laminated on a support material that supports the three-dimensional object, A three-dimensional object acquisition step of acquiring the three-dimensional object by removing the support material from the three-dimensional object with the support material manufactured by the three-dimensional object manufacturing process with the support material, and the ink is formed of the three-dimensional object. A modeling ink as a material and a supporting ink as a material of the support material, and the modeling ink includes a modeling color ink for coloring at least a part of the three-dimensional object. The support ink includes a color ink for support for coloring at least a part of the support material, and the three-dimensional object manufacturing process with the support material When generating a colored portion of the three-dimensional object with the modeling color ink, the portion of the support material that contacts the colored portion is colored with a color similar to the color of the colored portion with the support color ink. It is a process to perform.

  With this configuration, the three-dimensional object manufacturing method of the present invention manufactures a three-dimensional object with a support material in which the portion of the support material that contacts the colored portion of the three-dimensional object is colored in a color similar to the color of this colored portion. When the support material is removed from the three-dimensional object with the support material and the three-dimensional object is obtained, even if the support material remains on the unevenness of the colored part on the surface of the three-dimensional object, It is possible to suppress the color from becoming cloudy and thinning.

  In the three-dimensional object manufacturing method of the present invention, the three-dimensional object manufacturing process with a support material is a process of manufacturing the printed material with an ink jet printer, and the ink jet printer includes a table for supporting the three-dimensional object with a support material; An inkjet head that ejects the ink toward the table; and a head moving unit that moves the inkjet head relative to the table in a direction orthogonal to the direction of ink ejection by the inkjet head. The three-dimensional object manufacturing step with the support material includes: a moving amount of the relative movement of the inkjet head with respect to the table by the head moving means for each ejection of the modeling ink by the inkjet head, and a surface of the three-dimensional object with respect to the ejection direction. By changing according to the angle of Landing quantity of the shaping ink per unit area of the surface of the body thereof may be a step of substantially constant the.

  With this configuration, the three-dimensional object manufacturing method of the present invention substantially constants the landing amount of the modeling ink with respect to the unit area of the three-dimensional object surface regardless of the angle of the surface of the three-dimensional object with respect to the ink ejection direction. It can suppress that an unevenness | corrugation arises on the surface of an object. Therefore, when the three-dimensional object manufacturing method of the present invention removes the support material from the three-dimensional object with the support material and obtains the three-dimensional object, the colored portion on the surface of the three-dimensional object by the support material remaining on the unevenness of the surface of the three-dimensional object It can be suppressed that the color of the surface of the three-dimensional object becomes thin due to white turbidity, and the color of the colored portion on the surface of the three-dimensional object becomes white turbid due to irregular reflection caused by the unevenness of the surface of the three-dimensional object.

  In the three-dimensional object manufacturing method of the present invention, the three-dimensional object manufacturing process with a support material is a process of manufacturing the printed material with an ink jet printer, and the ink jet printer includes a table for supporting the three-dimensional object with a support material; An inkjet head having a plurality of nozzles that eject the ink toward the table, and the distance between the adjacent nozzles is shorter than the diameter of the dots when the ink is landed by the inkjet head. Also good.

  With this configuration, the three-dimensional object manufacturing method of the present invention can connect the ink dots in a liquid state when the ink lands, so that the surface of the three-dimensional object is uneven by connecting the ink dots. It is possible to suppress the occurrence. Therefore, when the three-dimensional object manufacturing method of the present invention removes the support material from the three-dimensional object with the support material and obtains the three-dimensional object, the colored portion on the surface of the three-dimensional object by the support material remaining on the unevenness of the surface of the three-dimensional object It can be suppressed that the color of the surface of the three-dimensional object becomes thin due to white turbidity, and the color of the colored portion on the surface of the three-dimensional object becomes white turbid due to irregular reflection caused by the unevenness of the surface of the three-dimensional object.

  The three-dimensional object manufacturing method of the present invention may include a clear ink application step of applying a clear ink to the surface of the three-dimensional object acquired by the three-dimensional object acquisition step.

  With this configuration, the three-dimensional object manufacturing method of the present invention fills the unevenness generated on the surface of the three-dimensional object with a clear ink, so that the color of the colored portion on the surface of the three-dimensional object becomes cloudy due to irregular reflection caused by the unevenness of the surface of the three-dimensional object. Can be suppressed.

  In the three-dimensional object manufacturing method of the present invention, the modeling ink includes the modeling color inks of a plurality of colors, and the three-dimensional object manufacturing process with a support material is a process of manufacturing the printed material by an inkjet printer. The inkjet printer includes a table for supporting the three-dimensional object with the support material, an inkjet head that ejects the ink toward the table, and a direction orthogonal to the ink ejection direction of the inkjet head. And a head moving means for moving the inkjet head relative to the base in a direction in which the inkjet heads of the color inks for modeling of a plurality of colors are arranged, The object manufacturing process forms a specific color by overlaying the color inks for modeling of multiple colors A plurality of the three-dimensional objects from the surface depending on whether the ink-jet head ejects the modeling color ink in the forward path or the return path in the moving direction of the relative movement of the ink-jet head with respect to the table by the head moving means. The step of aligning the stacking order of the color inks for modeling in the color of the three-dimensional object as a whole may be used.

  With this configuration, the three-dimensional object manufacturing method of the present invention forms the stacking order of the color inks for modeling of a plurality of colors from the surface of the three-dimensional object over the entire three-dimensional object, so that the color inks for modeling of a plurality of colors are overlapped and formed. Can suppress blurring of the color.

  In the three-dimensional object manufacturing method of the present invention, the modeling ink may include a special color ink for modeling.

  With this configuration, the method for manufacturing a three-dimensional object according to the present invention uses a color ink for modeling with a special color equivalent to a color formed by overlapping a plurality of color inks for modeling with a plurality of colors. It is possible to suppress the occurrence of color blur due to the difference in the stacking order of the color modeling color inks.

  A three-dimensional object manufacturing apparatus according to the present invention includes a three-dimensional object manufacturing means with a support material for manufacturing a three-dimensional object with a support material on which the three-dimensional object is supported on a support material that supports the three-dimensional object. The ink includes a modeling ink that is a material of the three-dimensional object and a support ink that is a material of the support material, and the modeling ink colors at least a part of the three-dimensional object. A color ink for modeling for performing, the support ink includes a color ink for support for coloring at least a part of the support material, and the three-dimensional object manufacturing means with a support material includes When generating a colored portion of the three-dimensional object using the modeling color ink, a portion of the support material that is in contact with the colored portion is defined as a color of the colored portion. Characterized in that it is a means of coloring by the support for color ink system colors of color.

  With this configuration, the three-dimensional object manufacturing apparatus of the present invention manufactures a three-dimensional object with a support material in which the part of the support material that contacts the colored part of the three-dimensional object is colored in the same color as the color of the colored part. Therefore, when the support material is removed from the three-dimensional object with the support material and the three-dimensional object is obtained, even if the support material remains on the unevenness of the colored portion of the surface of the three-dimensional object, the surface of the three-dimensional object is It is possible to suppress the color of the colored portion from becoming cloudy and light.

  The three-dimensional object manufacturing method and the three-dimensional object manufacturing apparatus of the present invention can suppress the color of the surface of the three-dimensional object from becoming light.

It is a flowchart of the solid thing manufacturing method which concerns on one embodiment of this invention. It is sectional drawing of an example of the solid object with a support material manufactured in the solid object manufacturing process with a support material shown in FIG. It is sectional drawing of an example of the solid object acquired in the solid object acquisition process shown in FIG. It is a schematic front view of a part of an inkjet printer used in the three-dimensional object manufacturing process with a support material shown in FIG. FIG. 5 is a schematic top view of a part of the ink jet printer shown in FIG. 4. It is a block diagram of the inkjet printer shown in FIG. It is a schematic front sectional drawing of a part of the inkjet printer shown in FIG. 4 when manufacturing a three-dimensional object with a support material. (A) It is a figure which shows an example of the color overlap of the color ink for modeling in a part of surface of the solid object shown in FIG. (B) It is an example of the color overlap of the color ink for modeling in a part of the surface of the three-dimensional object shown in FIG. 7, and is a diagram showing an example different from the example shown in FIG. 8 (a). (A) It is a figure which shows an example of the color overlap of the UV curable ink in the solid object with a support material shown in FIG. 7, and a part of boundary part of a support material. (B) An example of the color overlap of the UV curable ink in the three-dimensional object with the support material shown in FIG. 7 and a part of the boundary portion of the support material, which is different from the example shown in FIG. It is a figure which shows an example. (A) It is a figure which shows an example of the surface whose angle with respect to a perpendicular direction is 90 degrees among the surfaces of the solid object shown in FIG. (B) It is a figure which shows an example of the surface whose angle with respect to a perpendicular direction is 30 degrees among the surfaces of the solid object shown in FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  First, the three-dimensional object manufacturing method according to the present embodiment will be described.

  FIG. 1 is a flowchart of the three-dimensional object manufacturing method according to the present embodiment.

  As shown in FIG. 1, in the three-dimensional object manufacturing method according to the present embodiment, first, a three-dimensional object manufacturing process with a support material for manufacturing a three-dimensional object 70 with a support material (see FIG. 2) is executed (S101). ).

  FIG. 2 is a cross-sectional view of an example of the three-dimensional object 70 with a support material.

  As shown in FIG. 2, the three-dimensional object 70 with a support material includes a three-dimensional object 80 and a support material 90 that supports the three-dimensional object 80. The three-dimensional object 70 with a support material is formed of UV curable ink. The UV curable ink contains an ultraviolet absorber and is cured by being irradiated with ultraviolet rays.

  The three-dimensional object 80 includes a colored portion 81 that forms a surface portion of the three-dimensional object 80 and is colored, and a non-colored portion 82 that forms a portion other than the colored portion 81. The three-dimensional object 80 is formed by modeling ink that is a UV curable ink that is a material of the three-dimensional object 80. In particular, the colored portion 81 is formed by modeling color ink that is modeling ink for coloring. The modeling color ink is an ink that develops color when it contains a coloring material such as a pigment or a dye.

  The support material 90 includes a colored portion 91 that is in contact with the colored portion 81 and is colored, and a non-colored portion 92 that forms a portion other than the colored portion 91. The support material 90 is formed of a support ink that is a UV curable ink that is a material of the support material 90. In particular, the colored portion 91 is formed of a supporting color ink that is a supporting ink for coloring. The support ink is ink that is easily dissolved in a solvent such as alcohols or a specific solvent such as water. In addition, the color ink for support is colored by including a color material such as a pigment or a dye.

  As shown in FIG. 1, in the three-dimensional object manufacturing method according to the present embodiment, the three-dimensional object with a support material manufactured by the three-dimensional object manufacturing process with a support material in S101 after the three-dimensional object manufacturing process with a support material in S101. A three-dimensional object acquisition step is performed in which the support material 90 is removed from the three-dimensional object 70 with the support material, for example, by immersing 70 in water or hot water, and the three-dimensional object 80 is acquired as shown in FIG. 3 (S102).

  In the three-dimensional object manufacturing method according to the present embodiment, after the three-dimensional object acquisition step of S102, printing with a clear ink is applied to the surface of the three-dimensional object 80 acquired by the three-dimensional object acquisition process of S102, for example, by manual work. A clear ink application step of applying by a method other than the above is executed (S103).

  Next, the structure of the inkjet printer 10 (refer FIG. 4) as a three-dimensional object manufacturing apparatus used in the three-dimensional object manufacturing process with support material of S101 is demonstrated.

  FIG. 4 is a schematic front view of a part of the inkjet printer 10. FIG. 5 is a schematic top view of a part of the inkjet printer 10.

  As shown in FIG. 4 and FIG. 5, the inkjet printer 10 includes a table 21 that supports a three-dimensional object 70 with a support material, a main scanning direction indicated by an arrow 11, and a sub-scan indicated by an arrow 12 orthogonal to the main scanning direction. And a carriage 22 that is supported so as to be movable with respect to the base 21.

  The inkjet printer 10 includes a plurality of nozzle rows 23c in which nozzles 23b for discharging the UV curable ink 23a are arranged in the vertical direction indicated by an arrow 13 orthogonal to both the main scanning direction and the sub-scanning direction toward the table 21. A plurality of inkjet heads 23 provided are mounted on the carriage 22. The plurality of inkjet heads 23 are arranged in the main scanning direction. The nozzle row 23c extends in the sub-scanning direction.

  In the inkjet head 23, the distance between the nozzles 23b adjacent in the main scanning direction and the distance between the nozzles 23b adjacent in the sub-scanning direction are shorter than the dot diameter when the UV curable ink 23a is landed by the inkjet head 23.

  At least one of the inkjet heads 23 provided in the inkjet printer 10 discharges modeling ink. In particular, at least one of the inkjet heads 23 that ejects modeling ink ejects modeling color ink. For example, the inkjet printer 10 includes an inkjet head 23 that ejects yellow modeling color ink, an inkjet head 23 that ejects magenta modeling color ink, and an inkjet head 23 that ejects cyan modeling color ink. ing. An inkjet head 23 that ejects yellow modeling color ink, an inkjet head 23 that ejects magenta modeling color ink, and an inkjet head 23 that ejects cyan modeling color ink are indicated by an arrow 11a in the main scanning direction. Are arranged in this order in the direction indicated by.

  At least one of the inkjet heads 23 provided in the inkjet printer 10 ejects support ink. In particular, at least one of the inkjet heads 23 that eject support ink ejects support color ink. For example, the inkjet printer 10 includes an inkjet head 23 that ejects yellow support color ink, an inkjet head 23 that ejects magenta support color ink, and an inkjet head 23 that ejects cyan support color ink. ing. The inkjet head 23 that ejects yellow support color ink, the inkjet head 23 that ejects magenta support color ink, and the inkjet head 23 that ejects cyan support color ink are indicated by an arrow 11a in the main scanning direction. Are arranged in this order in the direction indicated by.

  The inkjet printer 10 is equipped with ultraviolet irradiation devices 24 such as UV-LEDs (Light Emitting Diodes) that irradiate ultraviolet rays toward the base 21 at both ends of the carriage 22 in the main scanning direction.

  FIG. 6 is a block diagram of the inkjet printer 10.

  As shown in FIG. 6, the inkjet printer 10 includes a main scanning direction moving device 31 as a head moving unit that moves the carriage 22 relative to the base 21 in the main scanning direction, and a sub scanning of the carriage 22 relative to the base 21. Via a sub-scanning direction moving device 32 as a head moving means for relatively moving in the direction, a vertical direction moving device 33 for moving the table 21 in the vertical direction relative to the carriage 22, and a network such as a LAN (Local Area Network). In addition, a communication unit 34 that is a communication device that communicates with an external apparatus directly by wire or wirelessly or via a network, and a control unit 35 that controls the entire inkjet printer 10 are provided.

  The control unit 35 includes, for example, a CPU (Central Processing Unit), a ROM (Read Only Memory) that stores programs and various data in advance, and a RAM (Random Access Memory) used as a work area of the CPU. ing. The CPU executes a program stored in the ROM.

  The control unit 35 functions as a three-dimensional object manufacturing means 35a with a support material that manufactures the three-dimensional object 70 with a support material by stacking the printed material using the UV curable ink 23a by executing a program stored in the ROM. .

  Next, the operation of the inkjet printer 10 will be described.

  FIG. 7 is a schematic front sectional view of a part of the ink jet printer 10 when the three-dimensional object 70 with a support material is manufactured.

  As shown in FIG. 7, the three-dimensional object manufacturing means 35a with a support material is based on the modeling data input via the communication unit 34, the inkjet head 23, the ultraviolet irradiation device 24, the main scanning direction moving device 31, and the sub scanning direction. The moving device 32 and the vertical direction moving device 33 are driven. Specifically, the three-dimensional object manufacturing means with support material 35 a moves the carriage 22 in the main scanning direction by the main scanning direction moving device 31. When the carriage 22 is moved in the main scanning direction, the support-attached three-dimensional object manufacturing means 35a discharges the UV curable ink 23a toward the table 21 by the ink jet head 23 and the landed UV curable type. The ink 23 a is irradiated with ultraviolet rays by the ultraviolet irradiation device 24. Then, each time the printing in the main scanning direction is finished, the three-dimensional object manufacturing means with support material 35a changes the position of the carriage 22 in the sub scanning direction with respect to the table 21 by the sub scanning direction moving device 32. The three-dimensional object manufacturing means 35a with a support material finishes printing at a specific position in the vertical direction by repeating the above processing. Then, the support-attached three-dimensional object manufacturing means 35a lowers the position of the table 21 in the sub-scanning direction by the vertical movement device 33 every time printing at a specific position in the vertical direction is finished. The three-dimensional object manufacturing means 35a with the support material repeats the above process to form a three-dimensional object 70 with the support material based on the modeling data by laminating the layered printed material with the UV curable ink 23a.

  When generating the colored portion 81 of the three-dimensional object 80, the three-dimensional object manufacturing means 35 a with a support material is colored with the modeling color ink to form the colored portion 81. When the support material-added three-dimensional object manufacturing means 35a generates the support material 90, the support material 90 supports the portion of the support material 90 that contacts the colored portion 81 of the three-dimensional object 80 in a color similar to the color of the colored portion 81. A colored portion 91 is formed by coloring with the color ink for use.

  When the three-dimensional object manufacturing means 35a with a support material forms a specific color by stacking a plurality of color inks for modeling, the forward path in the moving direction of the relative movement of the carriage 22 relative to the table 21 by the main scanning direction moving device 31 and The order in which the color inks for modeling of a plurality of colors from the surface of the colored portion 81 of the three-dimensional object 80 are aligned in the entire three-dimensional object 80 depending on which of the return paths the ink-jet head 23 is caused to eject the color ink for modeling.

  For example, in the case where a part of the surface of the colored portion 81 of the three-dimensional object 80 is formed with the modeling color ink, the three-dimensional object manufacturing means 35a with a support material is three-dimensional from this surface in a direction orthogonal to the surface. Regarding the surfaces 80a, 80b, and 80c in which the vertical component in the direction toward the outside of the object 80 is the downward direction indicated by the arrow 13a, the modeling color ink is applied to the inkjet head 23 in the direction indicated by the arrow 11a in the main scanning direction. As shown in FIG. 8A, the cyan modeling color ink, the magenta modeling color ink, and the yellow modeling color ink overlap from the bottom in the vertical direction. That is, the stacking order of the plurality of color modeling color inks from the surface of the colored portion 81 is the order of cyan modeling color ink, magenta modeling color ink, and yellow modeling color ink. In addition, when the three-dimensional object manufacturing means 35a with the support material forms a part of the surface of the colored portion 81 with the color ink for modeling, the three-dimensional object manufacturing unit 35a has an exterior of the three-dimensional object 80 from this surface in a direction orthogonal to the surface. With respect to the surfaces 80d, 80e, and 80f in which the vertical component in the direction toward the side is the upward direction indicated by the arrow 13b, the ink jet head 23 is shaped in the direction indicated by the arrow 11b opposite to the arrow 11a in the main scanning direction. By discharging the color ink for yellow, as shown in FIG. 8B, the yellow color ink for modeling, the color ink for magenta color modeling, and the color ink for cyan color overlap from the bottom in the vertical direction. Therefore, the three-dimensional object manufacturing means 35a with the support material causes the inkjet head 23 to eject the modeling color ink in the direction indicated by the arrow 11a with respect to the surfaces 80a, 80b, and 80c, and the arrow 80 with respect to the surfaces 80d, 80e, and 80f. By ejecting the modeling color ink to the inkjet head 23 in the direction shown, the stacking order of the modeling color inks of the plurality of colors from the surface of the colored portion 81 is changed over the entire three-dimensional object 80, and the cyan modeling color ink, magenta The color ink for modeling and the color ink for yellow modeling can be arranged in this order. Therefore, the color of the surface of the colored portion 81 is a specific color composed of cyan, magenta, and yellow, but is strongly influenced by cyan, which is the outermost color, and becomes a bluish color.

  The three-dimensional object manufacturing means 35a with support material causes the inkjet head 23 to discharge the modeling color ink in the direction indicated by the arrow 11b with respect to the surfaces 80a, 80b, and 80c, and the arrow 80a with respect to the surfaces 80d, 80e, and 80f. The modeling color ink may be ejected to the inkjet head 23 in the direction shown. With this configuration, the three-dimensional object manufacturing means 35a with the support material allows the three-dimensional object 80 to overlap the order of the plurality of colors of the modeling color ink from the surface of the colored portion 81, and the yellow modeling color ink and magenta modeling The color ink and the cyan color ink can be arranged in this order. Therefore, the color of the surface of the colored portion 81 is a specific color composed of cyan, magenta, and yellow, but is strongly influenced by yellow, which is the outermost color, and becomes a yellowish color.

  In the above, the color of the surface of the colored portion 81 of the three-dimensional object 80 has been described. However, the color of the surface of the colored portion 91 of the support material 90 is also used for supporting the inkjet head 23 in either the forward path or the return path in the main scanning direction. The color of the colored portion 91 of the support material 90 can be changed depending on whether color ink is ejected.

  For example, as shown in FIGS. 9A and 9B, the order in which the color inks for supporting a plurality of colors from the surface of the support material 90 in the colored portion 91 of the support material 90 are arranged in this colored portion. The order in which the color inks for modeling of a plurality of colors from the surface of the three-dimensional object 80 in the colored portion 81 in contact with 91 may be opposite may be used. With this configuration, after the support material 90 is removed from the three-dimensional object 70 with the support material, even if the support material 90 remains on the surface of the three-dimensional object 80, the colored portion 81 on the surface of the three-dimensional object 80 and the three-dimensional object 80 Since the order of color overlap is the same as that of the colored portion 91 of the support material 90 remaining on the surface, the support material 90 remaining on the surface of the three-dimensional object 80 is further difficult to be visually recognized.

  The three-dimensional object manufacturing means 35a with a support material determines the movement amount of the relative movement of the carriage 22 with respect to the table 21 by the main scanning direction moving device 31 or the sub scanning direction moving device 32 for each ejection of the modeling ink by the inkjet head 23 in the vertical direction. By changing the angle according to the angle of the surface of the three-dimensional object 80, the number of inks for modeling with respect to the unit area of the surface of the three-dimensional object 80 is made substantially constant. For example, as shown in FIG. 10A, the three-dimensional object manufacturing means 35a with a support material generates a surface with an angle of 90 ° with respect to the vertical direction among the surfaces of the three-dimensional object 80. When the movement amount of the relative movement of the carriage 22 with respect to the table 21 by the main scanning direction moving device 31 or the sub-scanning direction moving device 32 for each ink discharge is a distance 41, as shown in FIG. When generating a surface having an angle of 30 ° with respect to the vertical direction among the 80 surfaces, the carriage with respect to the table 21 by the main scanning direction moving device 31 or the sub-scanning direction moving device 32 for each ejection of the modeling ink by the inkjet head 23 The movement amount of the relative movement of 22 is a distance 42 that is half of the distance 41. Thus, the three-dimensional object manufacturing means 35a with a support material extends the surface of the three-dimensional object 80 every time the ink for modeling is discharged by the inkjet head 23 when generating a surface having an angle of 90 ° with respect to the vertical direction. The distance 41 in the direction is equal to the distance 43 in the extending direction of the surface for each ejection of the modeling ink by the inkjet head 23 in the case of generating a surface having an angle of 30 ° with respect to the vertical direction among the surfaces of the three-dimensional object 80. can do. That is, the three-dimensional object manufacturing means with support material 35a makes the landing quantity of the modeling ink substantially constant with respect to the unit area of the surface of the three-dimensional object 80.

  As described above, in the three-dimensional object manufacturing method according to the present embodiment, the colored part 91 that is in contact with the colored part 81 of the three-dimensional object 80 in the support material 90 is similar in color to the colored part 81. Since the three-dimensional object 70 with the support material colored is manufactured, when the three-dimensional object 80 is obtained by removing the support material 90 from the three-dimensional object 70 with the support material, the unevenness of the colored portion 81 on the surface of the three-dimensional object 80 is obtained. Even if the support material 90 remains, the support material 90 can suppress the color of the colored portion 81 on the surface of the three-dimensional object 80 from becoming clouded and thinning.

  In the three-dimensional object manufacturing method according to the present embodiment, the landing amount of the modeling ink with respect to the unit area of the surface of the three-dimensional object 80 is substantially constant regardless of the angle of the surface of the three-dimensional object 80 with respect to the discharge direction of the UV curable ink. Therefore, it is possible to suppress the occurrence of unevenness on the surface of the three-dimensional object 80. Therefore, in the three-dimensional object manufacturing method according to the present embodiment, when the three-dimensional object 80 is obtained by removing the support material 90 from the three-dimensional object 70 with the support material, the support material 90 remaining on the unevenness of the surface of the three-dimensional object 80. As a result, the color of the colored portion 81 on the surface of the three-dimensional object 80 becomes white turbid and thin, or the color of the colored portion 81 on the surface of the three-dimensional object 80 becomes white turbid and thin due to irregular reflection caused by unevenness on the surface of the three-dimensional object 80. Can be suppressed.

  In the three-dimensional object manufacturing method according to the present embodiment, the unevenness generated on the surface of the three-dimensional object 80 is filled with the clear ink (S103), so the colored portion on the surface of the three-dimensional object 80 due to irregular reflection caused by the unevenness on the surface of the three-dimensional object 80 It can suppress that the color of 81 becomes cloudy and becomes thin.

  As described above, the inkjet head 23 is configured such that the distance between the nozzles 23b adjacent in the main scanning direction and the distance between the nozzles 23b adjacent in the sub-scanning direction are the dots when the UV curable ink 23a is landed by the inkjet head 23. Shorter than the diameter. With this configuration, the three-dimensional object manufacturing method according to the present embodiment can connect the dots of the UV curable ink 23a in a liquid state when the UV curable ink 23a is landed, and thus the UV curable ink 23a. By connecting the dots, it is possible to suppress the formation of irregularities on the surface of the three-dimensional object 80. Therefore, in the three-dimensional object manufacturing method according to the present embodiment, when the three-dimensional object 80 is obtained by removing the support material 90 from the three-dimensional object 70 with the support material, the support material 90 remaining on the unevenness of the surface of the three-dimensional object 80. As a result, the color of the colored portion 81 on the surface of the three-dimensional object 80 becomes white turbid and thin, or the color of the colored portion 81 on the surface of the three-dimensional object 80 becomes white turbid and thin due to irregular reflection caused by unevenness on the surface of the three-dimensional object 80. Can be suppressed.

  In the three-dimensional object manufacturing method according to the present embodiment, since the stacking order of the color inks for modeling of a plurality of colors from the surface of the three-dimensional object 80 is aligned throughout the solid object 80, the color inks for modeling of a plurality of colors are overlapped. The blur of the formed color can be suppressed.

  In the three-dimensional object manufacturing method according to the present embodiment, the modeling ink may include a special modeling color ink. With this configuration, the method for manufacturing a three-dimensional object according to the present embodiment uses the surface color of the three-dimensional object 80 by using the color ink for modeling with the same color as the color formed by overlapping the color inks for modeling of a plurality of colors. The occurrence of color blur due to the difference in the stacking order of the color inks for modeling from a plurality of colors can be suppressed.

  In the present embodiment, the main scanning direction moving device 31 moves the carriage 22 in the main scanning direction relative to the table 21 by moving the carriage 22 in the main scanning direction. However, the main scanning direction moving device 31 may move the carriage 22 relative to the table 21 by moving the table 21 in the main scanning direction, or the table 21 and the carriage 22 in the main scanning direction. May be moved relative to the table 21 in the main scanning direction.

  In the present embodiment, the sub-scanning direction moving device 32 moves the carriage 22 relative to the table 21 in the sub-scanning direction by moving the carriage 22 in the sub-scanning direction. However, the sub-scanning direction moving device 32 may move the carriage 22 relative to the base 21 in the sub-scanning direction by moving the base 21 in the sub-scanning direction, or the base 21 and the carriage 22 in the sub-scanning direction. May be moved relative to the table 21 in the sub-scanning direction.

  In the present embodiment, the vertical direction moving device 33 moves the carriage 21 relative to the table 21 in the vertical direction by moving the table 21 in the vertical direction. However, the vertical movement device 33 may move the carriage 22 in the vertical direction relative to the table 21 by moving the carriage 22 in the vertical direction, or move the table 21 and the carriage 22 in the vertical direction. Accordingly, the carriage 22 may be moved relative to the table 21 in the vertical direction.

10 Inkjet printer (three-dimensional object manufacturing equipment)
21 units 23 inkjet head 23a UV curable ink 23b nozzle 31 main scanning direction moving device (head moving means)
32 Sub-scanning direction moving device (head moving means)
35a Three-dimensional object manufacturing means with support material 70 Three-dimensional object with support material 80 Three-dimensional object 81 Colored portion 90 Support material 91 Colored portion (a portion of the support material that contacts the colored portion of the three-dimensional object)

Claims (7)

A three-dimensional object manufacturing process with a support material for manufacturing a three-dimensional object with a support material on which the three-dimensional object is supported on a support material that supports the three-dimensional object;
A three-dimensional object acquisition step of obtaining the three-dimensional object by removing the support material from the three-dimensional object with the support material manufactured by the three-dimensional object manufacturing process with the support material, and
The ink is
Modeling ink to be the material of the three-dimensional object;
A support ink as a material of the support material,
The modeling ink includes a modeling color ink for coloring at least a part of the three-dimensional object,
The support ink includes a support color ink for coloring at least a part of the support material;
In the three-dimensional object manufacturing process with a support material, when generating a colored portion with the modeling color ink in the three-dimensional object, a portion of the support material that is in contact with the colored portion has a color similar to the color of the colored portion. A method for producing a three-dimensional object, characterized in that it is a step of coloring a color with the color ink for support. The three-dimensional object manufacturing process with a support material is a process of manufacturing the printed matter by an inkjet printer,
The inkjet printer is
A stand for supporting the three-dimensional object with the support material;
An inkjet head that ejects the ink toward the table;
A head moving means for moving the inkjet head relative to the table in a direction orthogonal to a direction in which the ink is ejected by the inkjet head;
The three-dimensional object manufacturing step with the support material includes: a moving amount of the relative movement of the inkjet head with respect to the table by the head moving means for each ejection of the modeling ink by the inkjet head, and a surface of the three-dimensional object with respect to the ejection direction. The method for manufacturing a three-dimensional object according to claim 1, wherein the method is a step of making the landing quantity of the modeling ink substantially constant with respect to a unit area of the surface of the three-dimensional object by changing the angle according to the angle. The three-dimensional object manufacturing process with a support material is a process of manufacturing the printed matter by an inkjet printer,
The inkjet printer is
A stand for supporting the three-dimensional object with the support material;
An inkjet head having a plurality of nozzles that eject the ink toward the table;
The three-dimensional object manufacturing method according to claim 1, wherein a distance between the adjacent nozzles is shorter than a diameter of a dot when the ink is landed by the inkjet head.   The three-dimensional object manufacturing according to any one of claims 1 to 3, further comprising a clear ink application step of applying a clear ink to a surface of the three-dimensional object acquired by the three-dimensional object acquisition step. Method. The modeling ink includes a plurality of modeling color inks,
The three-dimensional object manufacturing process with a support material is a process of manufacturing the printed matter by an inkjet printer,
The inkjet printer is
A stand for supporting the three-dimensional object with the support material;
An inkjet head that ejects the ink toward the table;
The inkjet head is relative to the platform in a direction orthogonal to the ink ejection direction of the inkjet head and in a direction in which the inkjet heads of the color inks for modeling of a plurality of colors are arranged. And a head moving means for moving,
In the three-dimensional object manufacturing process with a support material, when a specific color is formed by superimposing a plurality of color inks for modeling, a forward path in a moving direction of the relative movement of the inkjet head with respect to the table by the head moving means and It is a step of aligning the stacking order of the color inks for modeling of a plurality of colors from the surface of the three-dimensional object in the entire three-dimensional object, depending on whether the ink-jet head is caused to eject the color ink for modeling on the return path. The three-dimensional object manufacturing method according to claim 1, wherein   The three-dimensional object manufacturing method according to any one of claims 1 to 4, wherein the modeling ink includes the special color ink for modeling. A support material with a support material for producing a solid material with a support material on which the solid material is supported by laminating a printed material with ink on the support material supporting the three-dimensional object;
The ink is
Modeling ink to be the material of the three-dimensional object;
A support ink as a material of the support material,
The modeling ink includes a modeling color ink for coloring at least a part of the three-dimensional object,
The support ink includes a support color ink for coloring at least a part of the support material;
When the three-dimensional object manufacturing means with the support material generates a colored portion by the modeling color ink in the three-dimensional object, a portion of the support material that is in contact with the colored portion has a color similar to the color of the colored portion. A three-dimensional object manufacturing apparatus, characterized in that it is means for coloring a color with the color ink for support.

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