Three-dimensional modeling apparatus, three-dimensional modeling method and computer program

A method for modeling an object by discharging droplets, the method comprising the steps of:

• (a) forming a model by discharging droplets having a single predetermined color from a plurality of droplet discharging units based on the same reference signal;
• (b) causing a colorimeter to measure a color of the model to perform colorimetry of the model and specifying a first portion of the model and a second portion of the model that has the color with a higher density than the first portion;
• (c) adjusting at least one of the liquid amount of droplets per unit area to be discharged from, among the plurality of droplet discharging units, a first type droplet discharging unit that formed the first portion, and the liquid amount of droplets per unit area to be discharged from, among the plurality of droplet discharging units, a second type droplet discharging unit that formed the second portion, by converting, based on measurement result of measuring the color of the model, a gradation value of density for droplets discharged from a plurality of droplet discharging units, such that a difference in density of colors to be reproduced by the first type and the second type droplet discharging units decreases, the gradation value being a value designated by object data that indicates a shape and a color of the object, the gradation value being multiplied by a coefficient based on the measurement result to convert the gradation value;
• and
• (d) modeling the object after the forming of the model, the modeling of the object including
• generating, from the object data and the gradation value that has been converted, cross sectional data that indicates a shape of a cross section of the object and color of the periphery of the cross section after the causing the colorimeter to measure the color of the model to perform the colorimetry of the model, and
• repeating processing for discharging the droplets from a plurality of droplet discharging units based on the cross sectional data and forming a plate-like structure for the object to newly form the plate-like structure for the object on a plate-like structure that has already been formed.

A non-transitory computer-readable medium storing a computer program for modeling an object by controlling a three-dimensional modeling apparatus using a computer and causing droplets to be discharged, the computer program causing the computer to realize:

• a function of forming a model by discharging droplets having a single predetermined color from a plurality of droplet discharging units based on the same reference signal;
• a function of causing a colorimeter to measure a color of the model to perform colorimetry of the model and specifying a first portion of the model and a second portion of the model that has the color with a higher density than the first portion;
• a function of adjusting at least one of the liquid amount of droplets per unit area to be discharged from, among the plurality of droplet discharging units, a first type droplet discharging unit that formed the first portion, and the liquid amount of droplets per unit area to be discharged from, among the plurality of droplet discharging units, a second type droplet discharging unit that formed the second by converting, based on measurement result of measuring the color of the model, a gradation value of density for droplets discharged from a plurality of droplet discharging units, the gradation value being a value designated by object data that indicates a shape and a color of the object, the gradation value being multiplied by a coefficient based on the measurement result to convert the gradation value;
• and
• a function of modeling the object after the function of the forming of the mode, the function of the modeling of the object including
• generating, from the object data and the gradation value that has been converted, cross sectional data that indicates a shape of a cross section of the object and color of the periphery of the cross section after the function of the causing the colorimeter to measure the color of the model to perform the colorimetry of the model, and
• repeating processing for discharging the droplets from a plurality of droplet discharging units based on the cross sectional data and forming a plate-like structure for the object to newly form the plate-like structure for the object on a plate-like structure that has already been formed.