Method for manufacturing liquid with pattern and manufacturing system for liquid with pattern

Abstract

The present invention aims to provide a method for manufacturing a liquid having a pattern with high design freedom in the liquid, which can produce a sense of color, taste, fragrance, texture, and the like, and a system for manufacturing a liquid having a pattern. The present invention relates to a method for manufacturing a liquid having a pattern, which uses a nozzle capable of controlling a position to discharge a pattern forming material in which first microparticles of a first edible organic substance are dispersed in a first liquid into a second liquid, thereby forming a pattern composed of the first microparticles.

Description

TECHNICAL FIELD

[0001] The present application relates to a manufacturing method of a liquid with a pattern and a manufacturing system of a liquid with a pattern. More specifically, it relates to a manufacturing method of a liquid with a pattern and a manufacturing system of a liquid with a pattern in which a pattern such as a character, a picture, or a deviation of a component can be formed in a liquid. BACKGROUND

[0002] Three-dimensional printing technology is a technology in which a three-dimensional structure is formed by sequentially stacking materials as two-dimensional layers based on three-dimensional CAD (Computer-Aided Design) data. Using this technology, three-dimensional structures have been formed from various materials such as metal materials, polymer materials, food raw materials, and cells.

[0003] So far, as an example of three-dimensional printing technology in a liquid phase, a technology has been proposed in which a platform on which a liquid phase can be replaced is used, and a polymer material is stacked while the liquid phase is replaced according to the purpose conditions, thereby constructing a polymer structure (for example, refer to Patent Literature 1), or a technology has been proposed in which a solidified material is accumulated and solidified in a gel, thereby forming a three-dimensional object floating in the gel (for example, refer to Patent Literature 2), or a technology has been proposed in which a second fluid that does not mix with a first fluid is introduced into the first fluid, and a pattern is formed in the first fluid using the property that these do not mix (for example, refer to Patent Literature 3).

[0004] PATENT LITERATURE

[0005] Patent Literature 1: U.S. Patent Application Publication No. 2020 / 247053

[0006] Patent Literature 2: U.S. Patent Application Publication No. 2018 / 281295

[0007] Patent Literature 3: International Publication No. 2018 / 218264 SUMMARY

[0008] However, when considering the generation of a three-dimensional pattern in a liquid, if it is a method in which a polymer material is stacked as described in Patent Literature 1, the polymer structure that has been formed needs to always contact the bottom surface or the wall surface of the platform, and the design freedom of the three-dimensional pattern is limited. In addition, when a liquid in which a three-dimensional pattern has been formed is supplied as a beverage, sometimes it is required that the three-dimensional pattern does not change the texture as a beverage, and if it is the method described in Patent Literature 1, a large (one whole piece) polymer structure will be formed in the beverage as a fluid, and therefore the structure will necessarily affect the texture as a beverage. Similarly, when a liquid in which a three-dimensional pattern has been formed is supplied as a cosmetic, the three-dimensional pattern will also necessarily affect the feeling (tactile sensation) when it comes into contact with the skin.

[0009] In addition, if it is the method described in Patent Literature 2 or Patent Literature 3, it is possible to generate a three-dimensional figure in a state of floating in a gel or a fluid without contacting the bottom surface or the wall surface of a container in which the gel or the fluid is housed. However, if the method described in Patent Literature 2 is used, a solidifying material is used in the generation of a three-dimensional figure, and therefore, as in the case of Patent Literature 1, a solid structure is formed, and this structure necessarily affects the texture as a beverage or the tactile sensation as a cosmetic. Furthermore, even when a combination of two fluids that do not mix is used as described in Patent Literature 3, the difference in the properties of the fluids used for the line drawing, such as the hydrophilicity, affects the texture as a beverage or the tactile sensation as a cosmetic. Furthermore, two fluids having different properties have the property that the same fluid fuses with each other and the different fluids separate from each other, and therefore, line drawing is difficult, and the design freedom of the three-dimensional figure that can be drawn is limited.

[0010] Furthermore, the same problems as described above do not occur only in three-dimensional figures, but can also occur when a one-dimensional figure or a two-dimensional figure is formed in a liquid.

[0011] An object of the present application is to provide a method for manufacturing a liquid having a figure and a system for manufacturing a liquid having a figure, in which the design freedom of a figure in a liquid, which can generate a sense of color, taste, aroma, texture, tactile sensation, and the like, is high.

[0012] In addition, in recent years, there are concerns about the depletion of food resources due to abnormal weather, the increase in the world population, and the expansion of consumption. In the field of meat, three-dimensional printing is performed by culturing cells, and attempts are made to achieve the same texture as real meat. However, in beverages in which plants are used as raw materials, there are no such attempts. Therefore, an object of the present application can also be to provide a plant raw material beverage having a low environmental burden, which has the same texture as a beverage such as real milk or coffee, which has a high environmental burden, by designing a figure at a micro level.

[0013] To realize such a liquid with a figure, the present inventors focused on utilizing edible fine particles of a small size in the generation of a figure in a liquid. Such edible fine particles contain an insoluble component and are uniformly dispersed in a liquid, whereby the component can be easily taken in or utilized with the liquid. Such edible fine particles are generally used for this purpose, but the present inventors found that, if the size-dependent diffusion phenomenon of the edible fine particles is utilized, even in a liquid, the fine particles stay at the original position for a certain period of time, and thus a figure such as a letter or a picture composed of the fine particles can be drawn by arranging the fine particles in a liquid that becomes a site, and the shape thereof can be maintained. This is because the diffusion coefficient of the fine particles is smaller than that of a low molecule such as a pigment. Moreover, if the fine particles are edible, the monomers thereof, like a low molecule such as a pigment, are difficult to feel the taste in the mouth or the touch on the skin, but the fine particles can be aggregated by the coagulation property of non-covalent bonding, and as a result, the taste or the touch can be generated, and thus the presence or absence and the degree of the taste or the touch of the figure composed of the fine particles can be freely controlled.

[0014] That is, although not limited thereto, the present application relates to a method for manufacturing a liquid with a figure and a system for manufacturing a liquid with a figure.

[0015] <1> A method for manufacturing a liquid with a figure, which uses a nozzle capable of controlling a position to discharge a figure-forming material in which fine particles of a first edible organic substance are dispersed in a first liquid into a second liquid in which fine particles of a second edible organic substance are dispersed at 0 vol% or more and 74 vol% or less, thereby forming a figure composed of the fine particles of the first edible organic substance.

[0016] <2> The method for manufacturing a liquid with a figure according to <1>, wherein the fine particles of the first edible organic substance and / or the fine particles of the second edible organic substance are not chemically bound to each other by cross-linking.

[0017] <3> The method for manufacturing a liquid with a figure according to <1> or <2>, wherein the fine particles of the first edible organic substance and / or the fine particles of the second edible organic substance are aggregated to each other by the coagulation property of non-covalent bonding, thereby generating a taste.

[0018] <4> The method for manufacturing a liquid with a figure according to any one of <1> to <3>, wherein the diameter of the fine particles of the first edible organic substance and / or the fine particles of the second edible organic substance is 0.13 μm or more and 1000 μm or less.

[0019] The manufacturing method of the liquid having a pattern according to any one of the above <1> to <8>, wherein the ratio of the density of the first microparticles to the density of the second microparticles with respect to the density of the second liquid is 0.9 or more and 1.1 or less, and the ratio of the density of the second liquid to the density of the first liquid is 0.9 or more and 1.1 or less.

[0020] The manufacturing method of the liquid having a pattern according to any one of the above <1> to <5>, wherein the absolute value of the difference between the moisture content of the first liquid and the moisture content of the second liquid is 0% or more and 50% or less.

[0021] The manufacturing method of the liquid having a pattern according to any one of the above <1> to <6>, wherein the viscosity of the first liquid and the viscosity of the second liquid are each 0.8 mPa-s or more and 6 Pa-s or less at 25°C.

[0022] The manufacturing method of the liquid having a pattern according to any one of the above <1> to <7>, wherein the diameter L of the nozzle and the speed U of the nozzle in the second liquid satisfy the relationship of U x L ≤ 10 -3 m 2 / s.

[0023] The manufacturing method of the liquid having a pattern according to any one of the above <1> to <9>, wherein the ratio of the discharge flow rate X of the pattern-forming material discharged from the nozzle to the value of the opening area A of the tip end of the nozzle with respect to the speed U of the nozzle in the second liquid is 0.2 or more and 10 or less.

[0024] A manufacturing system of a liquid having a pattern, which is a manufacturing system of a liquid having a pattern in which a pattern-forming material containing microparticles of a small size of a first edible organic substance is dispersed in a first liquid, comprising: a tank that houses the pattern-forming material; a nozzle that discharges the pattern-forming material; a pump that supplies the pattern-forming material to the nozzle; and a control device that controls the position of the nozzle and the discharge flow rate of the pattern-forming material discharged from the nozzle, in such a manner that the diameter L of the nozzle and the speed U of the nozzle satisfy the relationship of U x L ≤ 10 -3 m 2 / s, and the control device discharges the pattern-forming material from the nozzle while moving the nozzle in a second liquid.

[0025] [1] A manufacturing method of a liquid having a pattern, which discharges a pattern-forming material in which microparticles of a small size of a first edible organic substance are dispersed in a first liquid to a second liquid using a nozzle whose position is controllable, to form a pattern composed of the microparticles in the second liquid.

[0026] 〔2〕. The method for producing a liquid having a pattern according to any one of the above items 1 to 3, wherein the first particles constituting the pattern are not chemically bound to each other by cross-linking.

[0027] 〔3〕. The method for producing a liquid having a pattern according to any one of the above items 1 or 2, wherein the diameter of the first particles is 0.13 μm or more and 1000 μm or less.

[0028] 〔4〕. The method for producing a liquid having a pattern according to any one of the above items 1 to 3, wherein the ratio of the density of the first particles to the density of the second liquid is 0.9 or more and 1.1 or less, and the ratio of the density of the second liquid to the density of the first liquid is 0.9 or more and 1.1 or less.

[0029] 〔5〕. The method for producing a liquid having a pattern according to any one of the above items 1 to 4, wherein the first particles contain at least one component selected from the group consisting of a coloring matter, a taste-imparting component, a nutrient, and an aroma component.

[0030] 〔6〕. The method for producing a liquid having a pattern according to any one of the above items 1 to 5, wherein the first particles contain at least one of silica and titanium dioxide.

[0031] 〔7〕. The method for producing a liquid having a pattern according to any one of the above items 1 to 6, wherein the first edible organic matter is at least one edible organic matter selected from the group consisting of polysaccharides, polypeptides, higher alcohols, natural resins, lipids, higher fatty acid esters, polyphenols, polyvinyl alcohol, polyethylene glycol, and nucleic acids.

[0032] 〔8〕. The method for producing a liquid having a pattern according to any one of the above items 1 to 7, wherein the first particles are aggregated to each other by non-covalent bonding aggregation, thereby generating a texture.

[0033] 〔9〕. The method for producing a liquid having a pattern according to any one of the above items 1 to 8, wherein the absolute value of the difference between the moisture content of the first liquid and the moisture content of the second liquid is 0% or more and 50% or less.

[0034] 〔10〕. The method for producing a liquid having a pattern according to any one of the above items 1 to 9, wherein the viscosity of the first liquid and the viscosity of the second liquid are each 0.8 mPa-s or more and 6 Pa-s or less at 25°C.

[0035] 〔11〕. The method for producing a liquid having a pattern according to any one of the above items 1 to 10, wherein the first liquid is an aqueous solution.

[0036] 〔12〕. The method for manufacturing a liquid having a pattern according to any one of claims 1 to 11, wherein the nozzle is freely movable in a plurality of axes.

[0037] 〔13〕. The method for manufacturing a liquid having a pattern according to any one of claims 1 to 12, wherein the second liquid is stored in a container, and the length of the nozzle is at least greater than the depth of the second liquid stored in the container.

[0038] 〔14〕. The method for manufacturing a liquid having a pattern according to any one of claims 1 to 13, wherein the diameter L of the nozzle and the speed U of the nozzle in the second liquid satisfy the relationship of U x L < 10 -3 m 2 / s.

[0039] 〔15〕. The method for manufacturing a liquid having a pattern according to any one of claims 1 to 14, wherein the ratio of the discharge flow rate X of the pattern-forming material discharged from the nozzle to the value of the opening area A of the tip of the nozzle with respect to the speed U of the nozzle in the second liquid is 0.2 or more and 10 or less.

[0040] 〔16〕. The method for manufacturing a liquid having a pattern according to any one of claims 1 to 15, wherein the nozzle has a tip in a circular, elliptical, triangular, rectangular, square, diamond, V-shaped, U-shaped, or C-shaped shape.

[0041] 〔17〕. The method for manufacturing a liquid having a pattern according to any one of claims 1 to 16, wherein the second liquid has dispersed therein second fine particles of a second edible organic substance, and the pattern-forming material is discharged into the second liquid having the second fine particles dispersed therein.

[0042] 〔18〕. The method for manufacturing a liquid having a pattern according to claim 17, wherein the second fine particles are not chemically bound to each other by cross-linking.

[0043] 〔19〕. The method for manufacturing a liquid having a pattern according to claim 17 or 18, wherein the diameter of the second fine particles is 0.13 μm or more and 1000 μm or less.

[0044] 〔20〕. The method for manufacturing a liquid having a pattern according to any one of claims 17 to 19, wherein the ratio of the density of the second fine particles to the density of the first fine particles, the density of the first liquid, and the density of the second liquid is 0.9 or more and 1.1 or less, respectively.

[0045] 〔21〕. The method for producing a liquid having a pattern according to any one of claims 17 to 20, wherein the second microparticles contain at least one component selected from the group consisting of a pigment, a taste-imparting component, a nutrient, and a flavor-imparting component.

[0046] 〔22〕. The method for producing a liquid having a pattern according to any one of claims 17 to 21, wherein the second microparticles contain at least one of silicon dioxide and titanium dioxide.

[0047] 〔23〕. The method for producing a liquid having a pattern according to any one of claims 17 to 22, wherein the second edible organic substance comprises at least one edible organic substance selected from the group consisting of a polysaccharide, a polypeptide, a higher alcohol, a natural resin, a lipid, a higher fatty acid ester, a polyphenol, a polyvinyl alcohol, a polyethylene glycol, and a nucleic acid.

[0048] 〔24〕. The method for producing a liquid having a pattern according to any one of claims 17 to 23, wherein the second microparticles are aggregated by non-covalent bonding of the aggregation property, and the texture is imparted.

[0049] 〔25〕. A system for producing a liquid having a pattern, which is a system for producing a liquid having a pattern in which a pattern is formed in a liquid, comprising: a tank for containing a pattern-forming material in which microparticles of a small size containing an edible organic substance are dispersed in a first liquid; a nozzle for discharging the pattern-forming material; a pump for sending the pattern-forming material to the nozzle; and a control device for controlling the position of the nozzle and the discharge rate of the pattern-forming material discharged from the nozzle, wherein the control device discharges the pattern-forming material from the nozzle while moving the nozzle in a second liquid, in such a manner that the diameter L of the nozzle and the speed U of the nozzle satisfy the relationship U x L < 10 -3 m 2 / s.

[0050] 〔26〕. The system for producing a liquid having a pattern according to claim 25, wherein the ratio of the discharge rate X of the pattern-forming material discharged from the nozzle to the value of the opening area A of the tip of the nozzle with respect to the speed U of the nozzle in the second liquid is 0.2 or more and 10 or less.

[0051] 〔27〕. A method for producing a liquid having a pattern, which comprises discharging a first liquid into a second liquid in which microparticles of a small size containing an edible organic substance are dispersed, using a nozzle whose position is controllable, to form a pattern composed of the first liquid.

[0052] 〔28〕. A manufacturing system of a liquid having a pattern, which is a manufacturing system of a liquid having a pattern in which a pattern is formed in a liquid, comprising: a tank that houses a first liquid; a nozzle that discharges the first liquid; a pump that supplies the first liquid to the nozzle; and a control device that controls the position of the nozzle and the discharge rate of the first liquid discharged from the nozzle, wherein the diameter L of the nozzle and the speed U of the nozzle satisfy the relationship U x L < 10 -3 m 2 / s, and the control device discharges the first liquid from the nozzle while moving the nozzle in a second liquid in which fine particles containing edible organic matter are dispersed.

[0053] 〔29〕. The manufacturing system of a liquid having a pattern according to the above item 28, wherein the ratio of the discharge rate X of the first liquid discharged from the nozzle to the value of the opening area A of the tip of the nozzle is 0.2 or more and 10 or less with respect to the speed U of the nozzle in the second liquid.

[0054] According to the present application, it is possible to provide a manufacturing method of a liquid having a pattern and a manufacturing system of a liquid having a pattern, in which the design freedom of a pattern in a liquid that can generate a sense such as color, taste, texture, and touch is high. BRIEF DESCRIPTION OF DRAWINGS

[0055] Figure 1 is a graph showing the correlation between the typical movement amount of a particle in a liquid for one hour and the diameter of the particle.

[0056] Figure 2 is a graph showing the theoretical value when the Reynolds number becomes a range of 1000 or less when moving the nozzle in a liquid.

[0057] Figure 3 is a schematic view of a manufacturing system of a liquid having a pattern in which a pattern is formed in a liquid according to the present application.

[0058] Figure 4 is a schematic view of a manufacturing system of a liquid having a pattern using a gantry system according to the present application.

[0059] Figure 5 is a schematic view of a manufacturing system of a liquid having a pattern using a robot arm according to the present application.

[0060] Figure 6 is an optical microscope photograph of a 10% by volume particle suspension in Verification Experiment 1.

[0061] Figure 7is a photograph showing the diffusion of a 1 μm diameter microparticle suspension agent dropped into a 20% by volume glycerol aqueous solution in Verification Experiment 1.

[0062] Figure 8 is a graph showing the diffusion of a 1 μm diameter microparticle suspension agent dropped into a 20% by volume glycerol aqueous solution in various liquid amounts in Verification Experiment 3.

[0063] Figure 9 is a graph showing the diffusion of a 1 μm diameter microparticle suspension agent dropped into a 20% by volume glycerol aqueous solution at a concentration of 0.5% by volume, 0.5 μL liquid amount, and left for 4 hours in Verification Experiment 3.

[0064] Figure 10 is a graph showing the diffusion of a 0.2 μm diameter microparticle suspension agent dropped into a 20% by volume glycerol aqueous solution in Verification Experiment 4.

[0065] Figure 11 is a photograph showing the construction of an image with a 1 μm diameter microparticle suspension agent in a 20% by volume glycerol aqueous solution in Verification Experiment 5.

[0066] Figure 12 is a graph showing the diffusion of a 45 μm diameter or 90 μm diameter microparticle suspension agent dropped into a 20% by volume glycerol aqueous solution at a concentration of 1.4% by volume, 1 μL liquid amount, respectively, and left for 4 hours in Verification Experiment 6.

[0067] Figure 13 is a photograph of a 1% by weight fluorescein sodium solution dropped into a 20% by volume glycerol aqueous solution.

[0068] Figure 14 is an optical microscope photograph of an agarose-made microparticle suspension agent in Verification Experiment 7.

[0069] Figure 15 is a graph showing the diffusion of a 90 μm diameter agarose-made microparticle suspension agent dropped into a 20% by volume glycerol aqueous solution and left for 4 hours in Verification Experiment 7.

[0070] Figure 16 is a graph showing the diffusion of a 1% by weight fluorescein sodium solution dropped into a 20% by volume glycerol aqueous solution and left for 3 minutes.

[0071] Figure 17 is a graph showing the results of evaluating the deviation of a line drawn 40 mm long when a 0.2% by volume suspension agent containing 1 μm diameter microparticles was discharged at various nozzle diameters, moving speeds, and discharge amounts of concentration 0.5% by volume or 1% by weight carboxymethyl cellulose into a 20% by volume glycerol aqueous solution in Verification Experiment 8.

[0072] Figure 18 is a graph showing the results of evaluation of the deviation of a line when a line of 40 mm in length was drawn using a suspension containing 1-μm-diameter particles at a concentration of 0.2% by volume, which was discharged at various discharge rates into a 20% by volume aqueous glycerol solution containing 0.5% by weight of carboxymethyl cellulose, in verification test 9. DETAILED DESCRIPTION

[0073] In the method of manufacturing a liquid having a pattern according to the first aspect of the present application (hereinafter, sometimes simply referred to as the method of manufacturing according to the first aspect), a pattern-forming material in which first microparticles containing a first edible organic substance are dispersed in a first liquid are discharged into a second liquid using a nozzle capable of controlling the position, thereby forming a pattern composed of the first microparticles.

[0074] According to the method of manufacturing according to the first aspect, a pattern-forming material in which first microparticles containing a first edible organic substance are dispersed in a first liquid are discharged into a second liquid using a nozzle capable of controlling the position, thereby forming a pattern composed of the first microparticles, whereby a pattern such as a letter or a drawing composed of the first microparticles is drawn in the second liquid as a space, and the shape thereof can be maintained. Therefore, a liquid having a pattern in which the color, taste, aroma, texture, tactile sensation, and the like are freely designed can be provided. For example, by causing the first microparticles to contain a coloring matter, a taste-imparting substance, and an aroma-imparting component, the color, taste, and aroma in space in the second liquid can also be designed. In addition, by controlling the cohesiveness of the first microparticles, the texture or tactile sensation in space in the second liquid can also be designed. Furthermore, by designing the pattern composed of the first microparticles at a micro level, a plant-derived beverage having a low environmental burden and the same texture as a beverage such as real milk or coffee, which has a high environmental burden, can also be manufactured.

[0075] Also, in the present specification, the "liquid" can also be a liquid-like substance that can be ingested by drinking or applied to the skin. Therefore, it is basically preferable that the first liquid and the second liquid be aqueous solutions.

[0076] The kinds of the first liquid and the second liquid are not particularly limited, and can be all beverages. Specifically, for example, they can be water, tea, coffee, juice beverages, carbonated beverages, functional beverages, sports beverages, energy beverages, non-alcoholic beverages, and the like, alcoholic beverages, nutritional beverages, milk, soy milk, soup, smoothies, frozen beverages, frozen cocktails, milkshakes, and the like. From the viewpoint of being able to visually observe the pattern composed of the first particles from the outside of the second liquid, it is preferable that the second liquid have a degree of transparency in which the pattern is visually observable through the second liquid. From the same viewpoint, the second liquid can also be transparent, colored, or colorless. The first liquid and the second liquid can be liquids of different kinds from each other, or liquids of the same kind. In addition, the first liquid and the second liquid can each be a single kind of liquid, or a mixture or separation of a plurality of liquids.

[0077] In addition, the kinds of the first liquid and the second liquid can also be skin cosmetics such as perfumes, cosmetic water, and creams.

[0078] Furthermore, the kinds of the first liquid and the second liquid can also be liquids suitable for the growth and maintenance of cells, such as culture media and buffers.

[0079] The pattern can also be any one of a one-dimensional pattern (line), a two-dimensional pattern (plane), and a three-dimensional pattern (solid). The kind of the pattern is not particularly limited, and for example, symbols such as characters, and colored patterns such as drawings, or patterns of deviations in ingredients, which generate taste, texture, and the like, or patterns that complexly generate these senses can be exemplified.

[0080] The first particles are microparticles containing a first edible organic substance. Since the first particles are microparticles and preferably have a diameter of 0.13 μm or more as described later, the diffusion of the first particles discharged into the second liquid is limited by the size thereof, and depending on the size, it can remain in the vicinity of the discharged position for several tens of minutes to several tens of hours. Thus, it is possible to produce a patterned liquid in which a pattern composed of the first particles is disposed at an arbitrary position in the second liquid. Furthermore, the particle configuration of the first particles is not particularly limited, and for example, uniform type, core-shell type, two-sided type, and the like can be exemplified.

[0081] With respect to the first liquid and the second liquid (which can also be water), it is preferable that the first particles described above be insoluble or hardly soluble. Thereby, the first particles can be stored for a long period of time in a state of being dispersed in the first liquid, and the first particles can be maintained for a long period of time in the second liquid.

[0082] It is preferable that the first particles described above that compose the pattern not be chemically bound to each other by cross-linking. Thereby, the pattern composed of the first particles does not become a mass, and it is easier to drink the pattern together with the second liquid.

[0083] Here, the preferable size range of the first microparticles is explained. A particle dropped in a liquid diffuses by Brownian motion. From the diffusion coefficient D of the particle, the typical movement distance x at a certain time t based on the diffusion can be calculated by the following equation 1.

[0084] x = V(2Dt) (equation 1)

[0085] Using the diameter d of the particle, the Boltzmann constant k B , the absolute temperature T, and the viscosity η of the liquid constituting the system, the diffusion coefficient D can be calculated from the Stokes-Einstein relation (equation 2 below).

[0086] D = (k B T) / (3πηd) (equation 2)

[0087] When a particle having a diameter of 1 μm is dropped in a liquid, the viscosity of the liquid in which the particle is dropped is assumed to be equivalent to the viscosity of water at 20°C, and the diffusion coefficient D is 4 x 10 -13 m 2 / s, and the particle typically moves 50 μm in one hour and 260 μm in 24 hours, respectively.

[0088] The theoretical value of the correlation between the typical movement amount of a microparticle in a liquid in one hour and the diameter of the microparticle is shown in Figure 1 . Figure 1 is a graph showing the theoretical value of the correlation between the typical movement amount of a microparticle in a liquid in one hour and the diameter of the microparticle. As shown in Figure 1 , the larger the size of the particle, the more the diffusion based on Brownian motion is suppressed. When a pattern forming material containing microparticles is used to draw a pattern in a liquid with a line width of 1 mm, the microparticles forming the line diffuse three-dimensionally, and the diameter of the microparticles whose line thickness becomes thicker by 30% (0.3 mm) or more in one hour is 0.13 μm or less. For example, when a pattern forming material containing microparticles having a diameter of 0.13 μm is used to arrange two lines having a line width of 1 mm at an interval of 1 mm, even if the thickness of each line becomes 1.3 times, respectively, and the distance between the two arranged lines is 0.3 mm, the two lines can be recognized as two lines from each other. That is, if microparticles having a diameter of 0.13 μm or more are used, a pattern that can be recognized even after one hour can be drawn.

[0089] Thus, while the diameter of the first microparticles can also be 0.13 μm or more, it is preferably 0.2 μm or more and 1000 μm or less. If it is 0.2 μm or more, the pattern drawn with a line width of 1 mm in the second liquid is maintained sufficiently even if it is left for one hour. If it is 1000 μm or less, the first microparticles do not feel rough when put in the mouth (see Reference 1 below, for example), and are more preferably 100 μm or less from this viewpoint. More preferably, the diameter of the first microparticles is 0.3 μm or more, further preferably 0.5 μm or more, and still further preferably 50 μm or less.

[0090] Here, the "diameter of the microparticles" is the mode diameter of the particle size distribution of the microparticles measured by dynamic light scattering (DLS).

[0091] The ratio of the density of the first microparticles to the density of the second liquid (the density of the first microparticles / the density of the second liquid) is preferably 0.9 or more and 1.1 or less, and the ratio of the density of the second liquid to the density of the first liquid (the density of the second liquid / the density of the first liquid) is preferably 0.9 or more and 1.1 or less. If these ratios are 0.9 or more and 1.1 or less, the pattern composed of the first microparticles is inhibited from floating or sinking in the second liquid together with the first liquid. From this viewpoint, these ratios are more preferably 0.92 or more and 1.08 or less, and further preferably 0.95 or more and 1.05 or less, respectively.

[0092] Here, the "density" indicates the weight per unit volume, and the "density of the microparticles" corresponds to the minimum density in the density of the solution (e.g., an aqueous glycerol solution) in which the microparticles (and also the pattern-forming material) are dropped and centrifuged under prescribed conditions (e.g., at 18,500 x g for one minute) without observing the sedimentation of the microparticles. The solution and the "density of the liquid" can be measured by a densimeter (DMA 4500M, Anton Paar), for example.

[0093] It is preferable that the above first microparticle contain at least one component selected from the group consisting of a pigment, a taste-imparting component, a nutrient, and a flavor-imparting component. Since the first microparticle contains these additives, various spatial designs can be performed by the pattern formed of the first microparticle. For example, when a pigment is contained, a spatial color design can be performed by the pattern formed of the first microparticle, when a taste-imparting component is contained, a spatial taste design can be performed by the pattern formed of the first microparticle, when a nutrient is contained, a spatial nutrient design can be performed by the pattern formed of the first microparticle, and when a flavor-imparting component is contained, a spatial flavor design can be performed by the pattern formed of the first microparticle. As the pigment, for example, a red pigment, a green pigment, a blue pigment, a black pigment, a white pigment, or the like can be used. As the taste-imparting component, for example, sucrose, fructose, salt, glucose, an amino acid, a nucleic acid, acetic acid, malic acid, citric acid, caffeine, tannin, capsaicin, glycerin, a food extract, or the like can be used. As the nutrient, for example, a vitamin, a mineral, a lipid, a fatty acid, a polypeptide, a saccharide, a health raw material molecule, a food extract, or the like can be used. As the flavor-imparting component, for example, a food flavoring compound containing vanillin, eugenol, geraniol, citral, or the like, and a food extract, or the like, which are specified in the first schedule of the Food Sanitation Law Enforcement Regulations, can be used. Furthermore, the first microparticle can contain a plurality of particles having different pigments and different kinds of pigments (for example, different colors). As each of the taste-imparting component, the nutrient, and the flavor-imparting component, the first microparticle can also contain a plurality of particles having different additives and different kinds of additives.

[0094] It is preferable that the above first microparticle contain at least one of silicon dioxide (SiO2) and titanium dioxide (TiO2). By containing these additives in the first microparticle, white or other colors can be expressed excellently.

[0095] The above first microparticle can also contain a hydrophobic substance or a hydrophilic substance for maintaining the above additive such as a pigment or silicon dioxide within the microparticle. Furthermore, the first microparticle can have a structure in which a layer containing a hydrophobic substance and a layer containing a hydrophilic substance are alternately arranged from the center to the outside, like a three-layer structure of a hydrophilic substance / hydrophobic substance / hydrophilic substance or a hydrophobic substance / hydrophilic substance / hydrophobic substance, for example.

[0096] The above first microparticle contains a first edible organic substance. The first edible organic substance is a substance that can function as a main component of forming the shape of the particle that is the first microparticle. Furthermore, although the "edible organic substance" is an organic substance that is edible for humans, it is not particularly limited as to whether it is digestible for humans and absorbable for humans. Furthermore, although the molecular weight of the first edible organic substance is not particularly limited, it is preferable that the first edible organic substance be a high-molecular-weight substance.

[0097] The first edible organic substance is preferably at least one edible organic substance selected from the group consisting of polysaccharides, polypeptides, higher alcohols, natural resins, lipids, higher fatty acid esters, polyphenols, polyvinyl alcohol, polyethylene glycol, and nucleic acids (DNA). Also, "polysaccharides" herein means sugars in which a plurality of (two or more) monosaccharides are combined. Also, although "polypeptides" means compounds in which a plurality of amino acids are linked by peptide bonds, they are considered to include proteins herein.

[0098] Suitable specific examples of the polysaccharides include dextrin, pectin, agar, agarose, glucan, polyglucose, maltodextrin, alginic acid (sodium alginate, calcium alginate, etc.), cellulose, hemicellulose, chitin, chitosan, starch (starch, etc.), glucan, sucrose, methylcellulose, carboxymethylcellulose, hydroxypropylcellulose, and the like. These can be used in combination of one or two or more.

[0099] Suitable specific examples of the polypeptides include gelatin, protein hydrolysate, collagen, albumin, and the like. These can be used in combination of one or two or more.

[0100] Suitable specific examples of the higher alcohols include dodecanol, hexadecanol, and the like. These can be used in combination of one or two or more.

[0101] Suitable specific examples of the natural resins include gum arabic, shellac, paraffin, lignin, polylactic acid, and the like. These can be used in combination of one or two or more.

[0102] Suitable specific examples of the lipids include lecithin and the like.

[0103] Also, the above suitable specific examples of polysaccharides and polypeptides, which belong to different categories, can also be used in combination of two or more.

[0104] Also, as specific examples of the first edible organic substance, although they include substances common to the above specific examples of additives of taste-imparting components or nutrients, these common examples are first edible organic substances that can function as components of taste-imparting components or nutrients, and the like. Also, in the present specification, "edible organic substances" are not limited to so-called foodstuffs and food additives, and the like, but can also be medical products, quasi-drugs in Japan, and the like, and mean organic substances that can be taken orally.

[0105] The first microparticles can also be cells such as human cells, animal cells, plant cells, and microbial cells. By using the first microparticles as these cells, it is possible to impart various physiological functions to the pattern composed of the first microparticles. Also, these cells contain the first edible organic substance.

[0106] The first microparticles can also be aggregated with each other by non-covalent bonding aggregation, and the texture or the tactile sensation can be generated. Thus, the texture or the tactile sensation in space can be designed by the pattern formed by the first microparticles. Furthermore, the method of aggregating the microparticles with each other by non-covalent bonding aggregation is not particularly limited, and the microparticles can be aggregated by, for example, charging the surface of the microparticles.

[0107] In the manufacturing method according to the first aspect, the first microparticles are dispersed in the first liquid before being discharged into the second liquid, and the first microparticles are discharged into the second liquid as the pattern forming material using a nozzle capable of controlling the position. In this way, in order to discharge the first microparticles into the second liquid using the nozzle, the first liquid is formed of a liquid containing the first microparticles. When the first microparticles contain a coloring component (in the case of coloring), the first liquid in which the first microparticles are dispersed, that is, the pattern forming material can function as a pattern forming ink.

[0108] Although the volume percentage concentration of the first microparticles in the pattern forming material is not particularly limited, it is preferably 0.05 vol% or more and 50 vol% or less, more preferably 0.1 vol% or more and 40 vol% or less, and further preferably 0.5 vol% or more and 30 vol% or less.

[0109] Here, the "volume percentage concentration of the first microparticles in the pattern forming material" can be measured by the Coulter method.

[0110] Furthermore, the kind of the pattern forming material to be discharged into the second liquid is not particularly limited, and one kind of pattern forming material can be discharged into the second liquid, or two or more kinds of pattern forming materials different from each other in at least one of the first microparticles and the first liquid can be simultaneously or sequentially discharged into the second liquid.

[0111] From the viewpoint of maintaining the pattern formed of the first microparticles in the second liquid for a long period of time, the first liquid is preferably compatible with the second liquid, and can be the same liquid as the second liquid or a liquid close to the second liquid. Hereinafter, this point will be described in detail.

[0112] The absolute value of the difference between the moisture content of the first liquid and the moisture content of the second liquid is preferably 0% or more and 50% or less. By combining liquids having no difference in moisture content, the taste or the color can be changed without changing the texture or the tactile sensation. By combining liquids having different moisture contents, the texture or the tactile sensation can be changed. More preferably, the absolute value of the difference between the two is 25% or less, and further preferably 15% or less. Furthermore, generally, the moisture content of the first liquid is less than the moisture content of the second liquid.

[0113] Here, the "water content of the liquid" can be measured by a drying reduction method. That is, the weight of a sample (here, a liquid) containing water is measured, and then the sample is placed in a thermostat at a predetermined temperature to evaporate the water, and the change in the weight of the sample is measured, whereby the water content can be measured.

[0114] It is preferable that the viscosity of the first liquid and the viscosity of the second liquid each be 0.8 mPa-s or more and 6 Pa-s or less at 25°C. If the viscosities of both are 0.8 mPa-s or more and 6 Pa-s or less at 25°C, the diffusion of the first liquid into the second liquid is easily suppressed, and thus the shape of the pattern composed of the first particles can be maintained in the second liquid for a longer period of time. From this viewpoint, it is more preferable that the viscosities of both be 3 Pa-s or less at 25°C, and it is further preferable that the viscosities of both be 1 Pa-s or less. In one aspect, it is preferable that the viscosity of the first liquid and the viscosity of the second liquid each be 1 mPa-s or more and 100 mPa-s or less at 25°C, and it is more preferable that the viscosities of both be 1 mPa-s or more and 50 mPa-s or less at 25°C. Furthermore, the viscosity of the first liquid and the viscosity of the second liquid can be either one greater than the other, or substantially the same.

[0115] Here, the "viscosity of the liquid" can be measured using the value measured by a densitometer (for example, DMA 4500 M, manufactured by Anton Paar) and a tuning fork vibration viscometer (for example, SV-10, manufactured by A&D Company Limited).

[0116] In addition, the following indicates one example of the viscosity at 25°C of a food that can be used as the first liquid and the second liquid. Water: 1 mPa-s, milk: 2 to 10 mPa-s, soy sauce: 5 to 10 mPa-s, juice beverage: 10 mPa-s, tomato juice: 19 mPa-s, lactic acid bacteria beverage stock solution: 40 to 50 mPa-s, salad oil: 50 to 80 mPa-s, maple syrup: 200 mPa-s, yogurt: 500 mPa-s, medium-thick sauce: 170 to 800 mPa-s, egg yolk: 500 to 900 mPa-s, ketchup: 2 Pa-s, mayonnaise: 8 Pa-s, honey: 10 to 50 Pa-s, malt syrup: 100 Pa-s.

[0117] The nozzle is a cylinder having a hollow inside and open at both end faces, and the pattern-forming material in which the first particles are dispersed in the first liquid is introduced from the root end of the nozzle and then discharged from the top end of the nozzle by flowing through the hollow inside of the nozzle. Generally, the three-dimensional position of the nozzle and the discharge flow rate of the pattern-forming material discharged from the top end of the nozzle are controlled by a control device of a manufacturing system of a liquid having a pattern described later. Furthermore, the number of nozzles used is not particularly limited, and one or a plurality of nozzles can be used.

[0118] It is preferable that the nozzle described above be freely movable in multiple axes (for example, 3 or more axes, 8 or fewer axes). Thereby, a three-dimensional pattern can be easily formed as a pattern composed of the first particles. Also, not only the nozzle but also the container in which the second liquid is housed can be moved.

[0119] The second liquid described above is housed in a container (for example, a cup or a bowl), and it is preferable that the length of the nozzle described above be at least greater than the depth of the second liquid housed in the container described above. Thereby, using the nozzle, a pattern composed of the first particles can be formed at an arbitrary position in the second liquid.

[0120] When a pattern is formed in a liquid, it is possible that turbulence occurs due to the nozzle and the pattern becomes disordered. In general, the smaller the Reynolds number (Re), the easier it is to suppress turbulence. It is particularly advantageous if it is suppressed to 1000 or less. This Reynolds number is defined by the following Equation 3 using the velocity U, the length L, and the kinematic viscosity coefficient v.

[0121] Re = (UL) / v (Equation 3)

[0122] Here, using the kinematic viscosity coefficient v = 1 x 10 -6 m 2 / s of water at 20°C, if the diameter of the nozzle is taken as L and the velocity of the nozzle in the second liquid is taken as U, the relationship of the nozzle diameter L and the nozzle velocity U for which the Reynolds number becomes 1000 or less is Figure 2 the gray portion. Figure 2 indicates the theoretical value of the range in which the Reynolds number (Re) becomes 1000 or less when the nozzle is moved in a liquid. That is, it is preferable that the diameter L (m) of the nozzle described above and the velocity U (m / s) of the nozzle described above in the second liquid satisfy the relationship of U x L ≤ 10 -3 m 2 / s. Thereby, turbulence due to the nozzle can be effectively suppressed, and a pattern of a desired shape can be formed sharply. From such a viewpoint, it is more preferable that the diameter L (m) of the nozzle and the velocity U (m / s) of the nozzle described above in the second liquid satisfy the relationship of U x L ≤ 5 x 10 -4 m 2 / s, and it is further preferable that the relationship of U x L ≤ 10 -4 m 2 / s be satisfied.

[0123] Also, "the diameter L of the nozzle" here indicates the length measured at the longest portion of the opening at the tip of the nozzle. For example, when the shape of the opening at the tip of the nozzle is circular, the diameter is indicated, when it is elliptical, the length of the major axis is indicated, and when it is quadrangular, the length of the diagonal of the longer side is indicated. Also, when the shape of the opening at the tip of the nozzle is a V shape, a U shape, a C shape, or the like having a recessed portion, the diameter of the smallest circle that encloses the shape is indicated.

[0124] It is assumed that the velocity of the above-mentioned nozzle U (m / s) and the discharge flow rate X (m³) of the material used to form the above-mentioned pattern ejected from the above-mentioned nozzle are... 3 / s) and the opening area A (m²) at the tip of the above nozzle. 2 When the following Equation 1 is satisfied, the drawing is more stable. This is because the relative velocity of the pattern-forming material ejected relative to the nozzle is relatively small, which can suppress turbulence caused by the nozzle. In particular, when the movement direction of the nozzle is the same as the ejection direction of the pattern-forming material, the drawing can be performed very stably if the following Equation 1 holds.

[0125] U=X / A……(Formula 1)

[0126] In this way, although it is ideal when the relationship (X / A) / U = 1 is established, even if the ratio of (X / A) / U deviates from 1 to a certain extent, it can effectively suppress turbulence caused by the nozzle and form the desired shape clearly.

[0127] Specifically, in order to effectively suppress turbulence caused by the nozzle and clearly form the desired pattern, the discharge flow rate X (m³) of the pattern-forming material ejected from the nozzle is relative to the velocity U (m / s) of the nozzle in the second liquid. 3 / s) divided by the opening area A(m) at the tip of the nozzle. 2 The ratio of the values ​​of X / A to U (hereinafter also referred to as the velocity ratio) is preferably 0.2 or higher and 10 or lower, more preferably 0.3 or higher and 8 or lower, and even more preferably 0.4 or higher and 5 or lower. If the velocity ratio is less than 0.2 or greater than 10, the Reynolds number increases and may become a cause of turbulence.

[0128] While the opening shape of the nozzle tip is not specifically limited, it is preferred that the nozzle has a round, elliptical, triangular, rectangular, square, rhomboid, V-shaped, U-shaped or C-shaped tip.

[0129] The pattern-forming material may also contain dispersed particles in the second liquid from which it is dispensed. That is, the pattern-forming material may contain minute particles of a second edible organic compound, which are then dispensed into the second liquid containing these particles. Alternatively, the pattern-forming material may not contain dispersed particles in the second liquid from which it is dispensed. In this case, the pattern-forming material may be dispensed into a second liquid in which minute particles of a second edible organic compound are dispersed at a volume percentage of 0% to 74% or less.

[0130] The volume percentage concentration of the second microparticles in the second liquid is not particularly limited if it is 0 vol% or more and 74 vol% or less, but is preferably 0.1 vol% or more and 70 vol% or less, more preferably 1 vol% or more and 60 vol% or less, and further preferably 5 vol% or more and 50 vol% or less. Also, since the pattern formation in the liquid is not affected by the concentration of the microparticles in the liquid, the concentration can be freely set. When the same particles are most densely arranged in the liquid, the arrangement becomes a hexagonal closest packing arrangement, and the packing ratio at this time can be calculated to be about 74 vol%. Thus, the maximum volume percentage concentration of the second microparticles in the second liquid is 74 vol%.

[0131] Here, the "volume percentage concentration of the second microparticles in the second liquid" can be measured by a Coulter particle counting method.

[0132] Preferably, the second microparticles are not chemically bound to each other by cross-linking. Thus, the second microparticles do not form a lump, and the second microparticles can be more easily drunk with the second liquid.

[0133] From the same viewpoint as that for the first microparticles, the diameter of the second microparticles can be 0.13 μm or more, but is preferably 0.2 μm or more and 1000 μm or less, and more preferably 100 μm or less. Further, it is more preferable that the diameter of the second microparticles be 0.3 μm or more, further preferably 0.5 μm or more, and more further preferably 50 μm or less.

[0134] As with the first microparticles and the second liquid, the ratio of the density of the second microparticles to the density of the first microparticles, the density of the second microparticles to the density of the first liquid, and the density of the second microparticles to the density of the second liquid is preferably 0.9 or more and 1.1 or less. Further, it is more preferable that the ratio of these be 0.92 or more and 1.08 or less, and further preferably 0.95 or more and 1.05 or less.

[0135] The second microparticles can further contain at least one component selected from the group consisting of a pigment, a taste-imparting component, a nutrient, and an aroma-imparting component. As specific examples of these components, the components exemplified in the first microparticles can be exemplified. Also, the second microparticles can contain a plurality of particles that differ in the presence or absence of a pigment and the kind of pigment contained (e.g., different colors). As for each of the taste-imparting component, the nutrient, and the aroma-imparting component, the second microparticles can also contain a plurality of particles that differ in the presence or absence of these additives and the kind of additive contained.

[0136] From the same viewpoint as that for the first microparticles, it is preferable that the second microparticles contain at least one of silicon dioxide and titanium dioxide.

[0137] The second microparticles can also contain a hydrophobic or hydrophilic substance for maintaining the above-mentioned colorant or additive such as silica within the microparticles.

[0138] The second microparticles contain a second edible organic substance. The second edible organic substance is a substance that can function as a main component of the shape of the particles that form the second microparticles. Although the molecular weight of the second edible organic substance is not particularly limited, it is preferable that the second edible organic substance be a high-molecular-weight substance.

[0139] It is preferable that the second edible organic substance include at least one edible organic substance selected from the group consisting of polysaccharides, polypeptides, higher alcohols, natural resins, lipids, higher fatty acid esters, polyphenols, polyvinyl alcohol, polyethylene glycol, and nucleic acids (DNA). As appropriate specific examples of these edible organic substances, the substances exemplified in the first edible organic substance can be exemplified. Also, as in the case of the first edible organic substance, appropriate specific examples of the edible organic substance can be used in combination of one or two or more, and the above-mentioned appropriate specific examples belonging to different classifications such as polysaccharides and polypeptides can also be used in combination of two or more. In addition, as in the case of the first microparticles, the specific examples of the edible organic substance can also include substances common to the specific examples of the additives of the taste-imparting components or nutrients, and such common examples are edible organic substances that can function as components of the taste-imparting components or nutrients and the like.

[0140] The second microparticles can also be aggregated by coagulation through non-covalent bonding, and thus the second microparticles can generate a sense of eating or a sense of touch. Thus, the second liquid in which the second microparticles are dispersed can generate a sense of eating or a sense of touch, and a change in the sense of eating or the sense of touch can occur between the pattern formed of the first microparticles and the second liquid in which the second microparticles are dispersed.

[0141] Next, a manufacturing system of a liquid with a pattern (hereinafter, sometimes simply referred to as a manufacturing system) according to the second aspect of the present application will be described. Also, regarding the configurations common to the manufacturing method according to the first aspect, since they can also be applied in the manufacturing system according to the second aspect, the description thereof will be appropriately omitted below.

[0142] The manufacturing system according to the second aspect is a manufacturing system of a liquid having a pattern formed therein, and includes a tank that stores a pattern forming material including fine particles of edible organic matter dispersed in a first liquid; a nozzle that discharges the pattern forming material; a pump that supplies the pattern forming material to the nozzle; and a control device that controls the position of the nozzle and the discharge rate of the pattern forming material from the nozzle. Thus, the pattern forming material can be supplied from the tank to the nozzle by the pump, and the position of the nozzle and the discharge rate of the pattern forming material can be controlled by the control device while the pattern forming material is discharged from the nozzle to an arbitrary position in a second liquid. Further, the discharge rate of the pattern forming material can be controlled by a change in pressure in the nozzle due to a change in pressure of the pump or a change in pressure in the nozzle due to voltage applied to a piezo element provided in the nozzle. Thus, a liquid having a pattern can be automatically manufactured by designing a pattern using software such as CAD and controlling the nozzle based on the design. That is, a liquid having a pattern can be manufactured, in which the design freedom of the pattern is high and the pattern can produce a sense such as color, taste, aroma, texture, and touch. In addition, a plant-derived beverage having a low environmental burden and the same texture as a beverage such as real milk or coffee, which has a high environmental burden, can be manufactured by designing a pattern composed of fine particles at a micro level.

[0143] Further, the diameter L (m) of the nozzle and the speed U (m / s) of the nozzle satisfy the relationship U x L ≤ 10 -3 m 2 / s. Thus, as explained in the manufacturing method according to the first aspect, turbulence generated by the nozzle can be effectively suppressed, and a pattern having a desired shape can be clearly formed. From this viewpoint, it is more preferable that the diameter L (m) of the nozzle and the speed U (m / s) of the nozzle in the second liquid satisfy the relationship U x L ≤ 5 x 10 -4 m 2 / s, and it is further preferable that the relationship U x L ≤ 10 -4 m 2 / s is satisfied.

[0144] From the same viewpoint as the manufacturing method according to the first aspect, the discharge rate X (m 3 / s) of the pattern forming material from the nozzle with respect to the speed U (m / s) of the nozzle in the second liquid, and the ratio (X / A) / U of the value of the opening area A (m 2 ) of the tip of the nozzle to the discharge rate X (m / s) of the pattern forming material from the nozzle is preferably 0.2 or more and 10 or less, more preferably 0.3 or more and 8 or less, and further preferably 0.4 or more and 5 or less.

[0145] The pattern forming material accommodated in the liquid tank can be supplied to the nozzle by a liquid supply pipe. The liquid tank is not particularly limited as long as it is a container that can accommodate the pattern forming material. The liquid tank can be provided separately from the pump and the nozzle, or can be provided integrally with the pump and the nozzle. In addition, a plurality of liquid tanks can be provided depending on the type of the pattern forming material.

[0146] The nozzle is as described in the manufacturing method according to the first aspect. In addition, a piezoelectric element such as a piezo element can be connected to the nozzle, and the discharge amount of the pattern forming material from the nozzle can be controlled by applying a voltage to the piezoelectric element to change the pressure inside the nozzle.

[0147] The pump is not particularly limited as long as it can supply the pattern forming material to the nozzle, and for example, a syringe pump, a peristaltic pump, or the like can be used.

[0148] The control device can further include a multi-axis mechanism (for example, a mechanism of three or more axes, or a mechanism of eight or fewer axes) that is connected to the nozzle and moves the position of the nozzle. Thus, the nozzle can be controlled by the multi-axis mechanism, and the nozzle can be moved in three dimensions. That is, a three-dimensional pattern can be easily formed. As the multi-axis mechanism, for example, a gantry system (for example, three axes) or a robot arm (for example, eight axes) can be used.

[0149] In addition, in order to control the discharge amount of the pattern forming material, the control device can control the pressure of the pump, or can control the voltage applied to the piezoelectric element provided in the nozzle portion.

[0150] Furthermore, the control device can further include a control processing device that performs control processing of the nozzle, the pump, the multi-axis mechanism, or the like. The control processing device is constituted by, for example, a software program for implementing various processes such as control processing, a CPU (Central Processing Unit) that executes the software program, various hardware (for example, a storage device) that is controlled by the CPU, or the like. A software program (for example, a control program using 3D-CAD data) or data necessary for the operation of the control processing device is stored in the storage device. Furthermore, the control processing device can be disposed together with the multi-axis mechanism at a place where a liquid having a pattern is manufactured (for example, in the same store), and devices related to at least a part of the functions of the control processing device can be disposed dispersedly at a place different from the place where the liquid having a pattern is manufactured (for example, in the cloud).

[0151] The manufacturing system related to the second aspect can further include a stage on which a container containing the second liquid is placed. The stage can be movable, and the control device can move not only the nozzle but also the stage, i.e., move the second liquid contained in the container, while discharging the pattern forming material into the second liquid from the nozzle.

[0152] Figure 3 Fig. 1 is a schematic view of a manufacturing system of a patterned liquid according to the present application. Figure 3 The manufacturing system 100 of a patterned liquid shown in the figure includes a plurality of liquid tanks 110 containing a pattern forming material 10 of which microparticles 11 are dispersed in a first liquid 12, a nozzle 120 discharging the pattern forming material 10, a pump 130 sending the pattern forming material 10 to the nozzle 120, a control device 140, a stage 150 on which a container 40 containing a second liquid 20 is placed, a sending pipe 151 connecting the liquid tank 110 and the pump 130, and a sending pipe 152 connecting the pump 130 and the nozzle 120. The control device 140 controls the position of the nozzle 120 and the discharge amount of the pattern forming material 10 discharged from the nozzle 120. According to the manufacturing system 100, a pattern 30 composed of the microparticles 11 can be automatically formed in the second liquid 20. Different kinds of pattern forming materials 10 can be contained in the plurality of liquid tanks 110, and the plurality of kinds of pattern forming materials 10 can be simultaneously or sequentially discharged from the nozzle 120. In addition, the manufacturing system 100 can include a plurality of nozzles 120, and the plurality of kinds of pattern forming materials 10 can be simultaneously or sequentially discharged from the plurality of nozzles 120.

[0153] Figure 4 Fig. 2 is a schematic view of a manufacturing system of a patterned liquid according to the present application using a gantry system. Figure 4The manufacturing system 200 of a liquid with a pattern shown in the drawing is provided with a liquid tank 210 that houses a pattern forming material (not shown) in which microparticles (not shown) are dispersed in a first liquid (not shown), a nozzle 220 that discharges the pattern forming material, a stage 250 that is provided with a container 40 that houses a second liquid 20, and a gantry system 260 that is a multi-axis mechanism of a control device (not shown). In addition, the liquid tank 210 is integrally provided with a pump (not shown) that supplies the pattern forming material to the nozzle 220 and an x-axis drive motor (not shown) of the gantry system 260. The gantry system 260 is a 3-axis drive mechanism provided with an x-axis rail 261 that supports the liquid tank 210 so as to be movable in the x-axis direction, a z-axis rail 262 that supports the x-axis rail 261 so as to be movable in the z-axis direction, a z-axis drive motor 263 that drives the x-axis rail 261 supported on the z-axis rail 262 in the z-axis direction, a y-axis rail 264 that supports the z-axis rail 262 so as to be movable in the y-axis direction, and a y-axis drive motor 265 that drives the z-axis rail 262 supported on the y-axis rail 264 in the y-axis direction, and the nozzle 220 is freely movable in the 3 axes under the control of the control device. The control device controls the position of the nozzle 220 by the gantry system 260 and controls the discharge flow rate of the pattern forming material discharged from the nozzle 220. By the manufacturing system 200, it is also possible to automatically form a pattern 30 composed of microparticles in the second liquid 20.

[0154] Figure 5 is a schematic view of a manufacturing system of a liquid with a pattern using a robot according to the present application. Figure 5 The manufacturing system 300 of a liquid with a pattern shown in the drawing is provided with a liquid tank 310 that houses a pattern forming material (not shown) in which microparticles (not shown) are dispersed in a first liquid (not shown), a nozzle 320 that discharges the pattern forming material, and a robot 360 that is a multi-axis mechanism of a control device (not shown). In addition, the liquid tank 310 is integrally provided with a pump (not shown) that supplies the pattern forming material to the nozzle 320. The robot 360 is, for example, an 8-axis drive mechanism, and the nozzle 320 is freely movable in the 8 axes under the control of the control device. The control device controls the position of the nozzle 320 by the robot 360 and controls the discharge flow rate of the pattern forming material discharged from the nozzle 320. By the manufacturing system 300, it is also possible to automatically form a pattern 30 composed of microparticles in the second liquid 20.

[0155] Next, a manufacturing method of a liquid having a pattern according to a third aspect of the present application (hereinafter, sometimes simply referred to as a manufacturing method according to the third aspect) will be described. Also, regarding the configurations common to the manufacturing method according to the first aspect, since they can be applied to the manufacturing method according to the third aspect as well, the description thereof will be appropriately omitted below.

[0156] In the manufacturing method according to the third aspect, the first liquid is ejected into the second liquid in which the fine particles containing the edible organic matter are dispersed, using a nozzle whose position can be controlled, to form the pattern composed of the first liquid.

[0157] According to the manufacturing method according to the third aspect, the first liquid is ejected into the second liquid in which the fine particles containing the edible organic matter are dispersed, using a nozzle whose position can be controlled, to form the pattern composed of the first liquid, whereby the pattern composed of the first liquid, such as a letter or a drawing, is drawn in the second liquid in which the fine particles are dispersed, in the place, and the shape thereof can be maintained. Therefore, a liquid having a pattern whose color, taste, aroma, texture, tactile sensation, and the like are freely designed can be provided. For example, by causing the first liquid to contain a coloring matter, a taste-imparting substance, and an aroma-imparting component, the design of the color, taste, and aroma in space in the second liquid can be performed. In addition, by controlling the texture or tactile sensation of the first liquid, the design of the texture or tactile sensation in space in the second liquid can also be performed. Furthermore, by designing the pattern composed of the first liquid at a micro level, a plant-derived beverage having the same texture as a beverage such as real milk or coffee, which has a high environmental burden, can also be manufactured.

[0158] The fine particles are fine particles containing an edible organic matter. Since the fine particles are fine particles, the diameter thereof is preferably 0.13 μm or more as described later, and thus the diffusion of the fine particles dispersed in the second liquid is limited by the size thereof. Therefore, even after the first liquid is ejected into the second liquid, the fine particles can stay in the vicinity of the original position for tens of minutes to tens of hours depending on the size. That is, the first liquid ejected into the second liquid can also stay in the vicinity of the position where it is ejected for tens of minutes to tens of hours. As a result, a liquid having a pattern in which the pattern composed of the first liquid is arranged at an arbitrary position in the second liquid can be generated.

[0159] As such, the manufacturing method according to the first aspect and the manufacturing method according to the third aspect differ only in the point of whether the fine particles are ejected into a liquid or another liquid is ejected into a liquid in which the fine particles are dispersed, and regarding each feature described in the manufacturing method according to the first aspect, the manufacturing method according to the third aspect can also apply. For example, the manufacturing method according to the third aspect can adopt the following aspects.

[0160] The kinds of the first liquid and the second liquid are not particularly limited, and all liquids can be used. As specific examples, the liquids described in the manufacturing method relating to the first aspect can be given. From the viewpoint that the pattern formed of the first liquid can be visually observed from the outside of the second liquid, it is preferable that the second liquid have transparency to such a degree that the pattern can be visually observed through the second liquid. From the same viewpoint, the second liquid can also be transparent colored or colorless. The first liquid and the second liquid can be liquids of different kinds from each other, or can be liquids of the same kind. In addition, the first liquid and the second liquid can each be a single kind of liquid, or can be a mixture or a separation of a plurality of liquids.

[0161] In addition, the kinds of the first liquid and the second liquid can also be skin cosmetics such as perfume, cosmetic water, and cream.

[0162] Furthermore, the kinds of the first liquid and the second liquid can also be liquids suitable for the growth and maintenance of cells such as culture medium and buffer.

[0163] In the manufacturing method relating to the third aspect, the first liquid does not necessarily contain fine particles of a small size containing edible organic matter.

[0164] In addition, one kind of first liquid can be discharged into the second liquid in which the fine particles are dispersed, or two or more kinds of first liquids can be simultaneously or sequentially discharged into the second liquid in which the fine particles are dispersed.

[0165] It is preferable that the above-mentioned first liquid contain at least one component selected from the group consisting of a coloring component, a taste component, a nutrient component, and an aroma component. Since the first liquid contains these additives, various spatial designs can be performed by the pattern formed of the first liquid. For example, when a coloring component is contained, a color design in space can be performed by the pattern formed of the first liquid, when a taste component is contained, a taste design in space can be performed by the pattern formed of the first liquid, when a nutrient component is contained, a nutrient design in space can be performed by the pattern formed of the first liquid, and when an aroma component is contained, an aroma design in space can be performed by the pattern formed of the first liquid. As the coloring component, for example, a red coloring component, a green coloring component, a blue coloring component, a black coloring component, a white coloring component, and the like can be used. As the taste component, for example, sucrose, fructose, salt, glucose, amino acid, nucleic acid, acetic acid, malic acid, citric acid, caffeine, tannin, capsaicin, glycerin, food extract, and the like can be used. As the nutrient component, for example, vitamin, mineral, lipid, fatty acid, polypeptide, saccharide, health raw material molecule, food extract, and the like can be used. As the aroma component, for example, a food flavoring compound containing vanillin, eugenol, geraniol, citral, and the like, and a food extract, and the like specified in the first schedule of the Japanese Food Hygiene Law Enforcement Regulation can be used. Furthermore, the first liquid can contain a plurality of liquids different in the presence or absence of a coloring component and the kind of the coloring component contained (for example, different in color). As to each of the taste component, the nutrient component, and the aroma component, the first liquid can also contain a plurality of liquids different in the presence or absence of these additives and the kind of the additives contained.

[0166] When the above-mentioned first liquid contains a coloring component (when colored), the first liquid can function as an ink for pattern formation.

[0167] The above-mentioned pattern can be any one of a one-dimensional pattern (line), a two-dimensional pattern (plane), and a three-dimensional pattern (solid). The kind of the pattern is not particularly limited, and for example, a symbol such as a letter, a colored pattern, a pattern that gives a sense of taste, a sense of eating, or a sense of touch, or a pattern that gives a plurality of these senses can be exemplified.

[0168] The particle configuration of the above-mentioned microparticle is not particularly limited, and for example, a uniform type, a core-shell type, a two-face type, and the like can be exemplified.

[0169] It is preferable that the above-mentioned microparticle be insoluble or hardly soluble with respect to the first liquid and the second liquid (water can also be included). From the viewpoint that the pattern formed of the first liquid can be visually observed from the outside of the second liquid, the microparticle can also have a degree of transparency in which the pattern formed of the first liquid can be visually observed through the microparticle dispersed in the second liquid. From the same viewpoint, the microparticle can also be transparent colored or colorless.

[0170] It is preferable that the above-mentioned microparticles are not chemically bound to each other by cross-linking. Thus, the pattern formed by the microparticles does not form a mass, and the microparticles can be more easily taken with the second liquid.

[0171] While the diameter of the above-mentioned microparticles can be 0.13 μm or more, it is preferable that the diameter is 0.2 μm or more and 1000 μm or less. More preferably, the diameter of the microparticles is 0.3 μm or more, further preferably 0.5 μm or more, and still further preferably 50 μm or less.

[0172] The ratio of the density of the above-mentioned microparticles to the density of the above-mentioned second liquid (the density of the microparticles / the density of the second liquid) is preferably 0.9 or more and 1.1 or less. If the ratio is 0.9 or more and 1.1 or less, the microparticles can be inhibited from floating or sinking in the second liquid, and thus the pattern formed by the first liquid can be formed at any position in the second liquid. From this viewpoint, more preferably, the ratio is 0.92 or more and 1.08 or less, and further preferably 0.95 or more and 1.05 or less.

[0173] The above-mentioned microparticles can further contain at least one component selected from the group consisting of a coloring material, a taste-imparting component, a nutrient, and an aroma-imparting component. As specific examples of the coloring material, the taste-imparting component, the nutrient, and the aroma-imparting component, for example, the substances described in the manufacturing method relating to the first aspect can be mentioned. Further, the microparticles can contain a plurality of particles different in the presence or absence of a coloring material and the kind of the coloring material contained (for example, different in color). As to each of the taste-imparting component, the nutrient, and the aroma-imparting component, the microparticles can also contain a plurality of particles different in the presence or absence of the additive and the kind of the additive contained.

[0174] It is preferable that the above-mentioned microparticles contain at least one of silicon dioxide (SiO2) and titanium dioxide (TiO2).

[0175] The above-mentioned microparticles can further contain a hydrophobic substance or a hydrophilic substance for maintaining the above-mentioned coloring material or additive such as silicon dioxide within the microparticles. In addition, the microparticles can have a structure in which a layer containing a hydrophobic substance and a layer containing a hydrophilic substance are alternately arranged from the center to the outside, such as a three-layer structure of hydrophilic substance / hydrophobic substance / hydrophilic substance or hydrophobic substance / hydrophilic substance / hydrophobic substance.

[0176] The above-mentioned microparticles contain an edible organic substance. The edible organic substance is a substance that can function as a main component of the shape of the particle that forms the microparticles. While the molecular weight of the edible organic substance is not particularly limited, it is preferable that the edible organic substance is a high-molecular-weight substance.

[0177] The edible organic substance is preferably at least one edible organic substance selected from the group consisting of polysaccharides, polypeptides, higher alcohols, natural resins, lipids, higher fatty acid esters, polyphenols, polyvinyl alcohol, polyethylene glycol, and nucleic acids (DNA). As appropriate examples of these edible organic substances, the first edible organic substance exemplified in the manufacturing method of the first aspect can be exemplified. Also, as in the case of the manufacturing method of the first aspect, appropriate examples of the edible organic substance can be used in combination of one or two or more, and the appropriate examples of the above-mentioned different classification such as polysaccharides and polypeptides can also be used in combination of two or more.

[0178] The microparticles can also be cells such as human cells, animal cells, plant cells, and microbial cells. By using microparticles as these cells, the second liquid in which the microparticles are dispersed can have various physiological functions. Also, these cells contain edible organic substances.

[0179] The microparticles can also be aggregated by cohesion through non-covalent bonding, and can produce a sense of eating or a sense of touch.

[0180] Although the volume percentage concentration of the microparticles in the second liquid is not particularly limited, it is preferably 0.05% by volume or more and 74% by volume or less, more preferably 0.1% by volume or more and 60% by volume or less, and further preferably 0.5% by volume or more and 50% by volume or less.

[0181] Here, the "volume percentage concentration of the microparticles in the second liquid" can be measured by the Coulter particle counting method.

[0182] As in the case of the manufacturing method of the first aspect, the first liquid is preferably compatible with the second liquid, and can also be the same liquid as the second liquid or a liquid close to the second liquid, from the viewpoint of maintaining the pattern composed of the first liquid in the second liquid for a long period of time.

[0183] The ratio of the density of the second liquid to the density of the first liquid (the density of the second liquid / the density of the first liquid) is preferably 0.9 or more and 1.1 or less. If the ratio is 0.9 or more and 1.1 or less, the pattern composed of the first liquid can be inhibited from floating or sinking in the second liquid. From this viewpoint, the ratio is more preferably 0.92 or more and 1.08 or less, and further preferably 0.95 or more and 1.05 or less.

[0184] The absolute value of the difference between the moisture content of the first liquid and the moisture content of the second liquid is preferably 0% or more and 50% or less. The absolute value of the difference between the two is more preferably 25% or less, and further preferably 15% or less. Also, the moisture content of the first liquid is generally greater than the moisture content of the second liquid.

[0185] The viscosity of the first liquid and the viscosity of the second liquid are preferably 0.8 mPa-s or more and 6 Pa-s or less at 25°C, respectively. If the viscosities of both are 0.8 mPa-s or more and 6 Pa-s or less at 25°C, respectively, the diffusion of the first liquid in the second liquid is easily suppressed, and thus the shape of the pattern formed of the first liquid can be maintained in the second liquid for a longer period of time. From this viewpoint, the viscosities of both are more preferably 3 Pa-s or less at 25°C, and further preferably 1 Pa-s or less, respectively. In one aspect, the viscosity of the first liquid and the viscosity of the second liquid are preferably 1 mPa-s or more and 100 mPa-s or less at 25°C, respectively, and more preferably 1 mPa-s or more and 50 mPa-s or less, respectively. The viscosity of the first liquid and the viscosity of the second liquid can be either one of them greater or substantially the same.

[0186] The nozzle is a cylinder having a hollow inside and open both ends, and the first liquid is introduced from the root end of the nozzle and then discharged from the top end of the nozzle by flowing through the hollow inside of the nozzle. Generally, the three-dimensional position of the nozzle and the discharge flow rate of the first liquid discharged from the top end of the nozzle are controlled by a control device of a manufacturing system of a liquid having a pattern described later. Also, the number of nozzles used is not particularly limited, and can be one or a plurality of nozzles.

[0187] The nozzle is preferably movable in multiple axes (for example, three or more axes and eight or fewer axes). Also, not only the nozzle but also the container in which the second liquid is housed can be moved.

[0188] The second liquid is housed in a container (for example, a cup or a bowl), and the length of the nozzle is preferably at least greater than the depth of the second liquid housed in the container.

[0189] The diameter L (m) of the nozzle and the speed U (m / s) of the nozzle in the second liquid preferably satisfy the relationship of U x L ≤ 10 -3 m 2 / s, more preferably U x L ≤ 5 x 10 -4 m 2 / s, and further preferably U x L ≤ 10 -4 m 2 / s.

[0190] The discharge flow rate X (m 3 / s) of the first liquid discharged from the nozzle with respect to the speed U (m / s) of the nozzle in the second liquid is divided by the value of the opening area A (m 2 ) of the top end of the nozzle, and the ratio (X / A) / U is preferably 0.2 or more and 10 or less, more preferably 0.3 or more and 8 or less, and further preferably 0.4 or more and 5 or less.

[0191] Although the shape of the opening of the tip of the above-mentioned nozzle is not particularly limited, it is preferable that the above-mentioned nozzle have a circular, elliptical, triangular, rectangular, square, diamond, V-shaped, U-shaped, or C-shaped tip.

[0192] Next, a manufacturing system of a liquid having a pattern (hereinafter, sometimes simply referred to as a manufacturing system) according to a fourth aspect of the present application will be described. Also, regarding the configurations common to the manufacturing method and the manufacturing system according to the above-mentioned aspects, since they can also be applied to the manufacturing system according to the fourth aspect, the description thereof will be appropriately omitted below.

[0193] The manufacturing system according to the fourth aspect is a manufacturing system of a liquid having a pattern in which a pattern is formed in a liquid, and includes a tank that houses a first liquid, a nozzle that discharges the first liquid, a pump that supplies the first liquid to the nozzle, and a control device that controls the position of the nozzle and the discharge flow rate of the first liquid discharged from the nozzle, the control device discharging the first liquid from the nozzle while moving the nozzle in a second liquid in which fine particles containing edible organic matter are dispersed. Thus, the first liquid can be supplied from the tank to the nozzle by the pump, and the position of the nozzle and the discharge flow rate of the first liquid can be controlled by the control device while discharging the first liquid from the nozzle to an arbitrary position in the second liquid in which the fine particles are dispersed. Also, the discharge flow rate of the first liquid can be controlled by the change in pressure due to the pump pressure or the change in pressure in the nozzle due to the voltage applied to a piezo element or the like provided in the nozzle portion. Thus, a liquid having a pattern can be automatically manufactured by designing a pattern using software such as CAD and controlling the nozzle in accordance with the design. That is, a liquid having a pattern in which the design freedom of the pattern in the liquid is high and which can produce a pattern of a sense such as color, taste, aroma, texture, and touch can be manufactured. In addition, by designing a pattern composed of the first liquid at a micro level, a plant-derived beverage having a low environmental burden and the same texture as a beverage such as real milk or coffee, which has a high environmental burden, can also be manufactured.

[0194] Also, the control device discharges the first liquid from the nozzle while moving the nozzle in the second liquid in such a manner that the diameter L (m) of the nozzle and the speed U (m / s) of the nozzle in the second liquid satisfy U x L < 10 -3 m 2 / s. Thus, as described in the manufacturing method according to the first aspect, the turbulent flow generated by the nozzle can be effectively suppressed, and a pattern of a desired shape can be sharply formed. From this viewpoint, it is more preferable that the diameter L (m) of the nozzle and the speed U (m / s) of the nozzle in the second liquid satisfy U x L < 5 x 10-4 m 2 Further preferably, the relationship U x L is 10 or less -4 m 2 .

[0195] From the same viewpoint as the manufacturing method involved in the first aspect, the discharge flow rate X (m3 / s) of the first liquid discharged from the nozzle with respect to the speed U (m / s) of the nozzle in the second liquid described above is preferably 0.2 or more and 10 or less, more preferably 0.3 or more and 8 or less, and further preferably 0.4 or more and 5 or less. 3 / s) divided by the value of the opening area A (m 2 ) of the tip of the nozzle is also preferably 0.2 or more and 10 or less, more preferably 0.3 or more and 8 or less, and further preferably 0.4 or more and 5 or less.

[0196] The first liquid housed in the liquid tank can also be supplied to the nozzle by a liquid delivery pipe. The liquid tank is not particularly limited as long as it is a container that can house the first liquid. The liquid tank can be provided separately from the pump and the nozzle, or can be provided integrally with the pump and the nozzle. In addition, depending on the type of the first liquid, a plurality of liquid tanks can be provided.

[0197] The nozzle can be as described in the manufacturing method involved in the third aspect. A piezoelectric element such as a piezo element can also be connected to the nozzle, and the discharge flow rate of the first liquid from the nozzle can be controlled by applying a voltage to the piezoelectric element to generate a pressure change in the nozzle.

[0198] The pump is not particularly limited as long as it can deliver the first liquid to the nozzle, and for example, a syringe pump, a peristaltic pump, or the like can be used.

[0199] The control device can also have a multi-axis mechanism (for example, a mechanism of three or more axes and eight or less axes) connected to the nozzle and configured to move the position of the nozzle. As the multi-axis mechanism, for example, a gantry system (for example, three axes) or a robot arm (for example, eight axes) can be used.

[0200] In addition, in order to control the discharge flow rate of the first liquid, the control device can control the pressure of the pump, or can control the applied voltage of the piezoelectric element provided in the nozzle portion.

[0201] Further, the above control device can also have a control processing device that performs control processing of the nozzle, the pump, the multi-axis mechanism, and the like. The control processing device is constituted by, for example, a software program for implementing various processing such as control processing, a CPU that executes the software program, various hardware (for example, a storage device) that is controlled by the CPU, and the like. A software program (for example, a control program using 3D-CAD data) or data required for the operation of the control processing device is stored in the storage device. Further, the control processing device can also be arranged together with the multi-axis mechanism at a place where the liquid with a pattern is manufactured (for example, in the same store), and devices related to at least a part of the functions of the control processing device can also be arranged dispersedly at a place different from the place where the liquid with a pattern is manufactured (for example, in the cloud).

[0202] The manufacturing system related to the fourth aspect can also have a stage on which a container that contains the second liquid is set. The stage can also be configured to be movable, and the control device can also move not only the nozzle but also the stage, that is, move the second liquid contained in the container, while discharging the first liquid from the nozzle into the second liquid.

[0203] As the manufacturing system related to the fourth aspect, for example, a manufacturing system of a liquid with a pattern as shown in FIG. 1 can be applied. Figures 3-5

[0204] In the above, although the aspect of manufacturing a liquid with a pattern, for example, a beverage with a pattern, using fine particles of a small size has been described, the present application can be applied not only to a beverage product but also, for example, to the manufacture of a cosmetic product.

[0205] That is, the manufacturing method of a cosmetic product with a pattern related to the other aspect of the present application is as follows: a pattern forming material in which fine particles of a small size are dispersed in a first liquid is discharged into a second liquid using a nozzle whose position can be controlled, and a pattern composed of the above first particles is formed.

[0206] Further, the manufacturing method of a cosmetic product with a pattern related to the other aspect of the present application is as follows: a first liquid is discharged into a second liquid in which fine particles of a small size are dispersed using a nozzle whose position can be controlled, and a pattern composed of the above first liquid is formed.

[0207] Further, as for each feature of the particles and the liquids described in the manufacturing method of a liquid with a pattern related to the above aspect, the manufacturing method of a cosmetic product with a pattern and the manufacturing method of a beverage with a pattern related to these aspects can also be applied appropriately.

[0208] Further, as for the particles and the liquids in the manufacturing method of a cosmetic product with a pattern related to these aspects, materials that can be used as a cosmetic product and are generally available can be used. ​

[0209] Hereinafter, the present application will be specifically described based on verification experiments. Also, in the following verification experiments, although experiments using fine particles containing non-edible organic matter are included, the behavior of fine particles in a liquid is not affected by whether or not the organic matter is edible, and thus it is considered that the following results can also be obtained when fine particles containing edible organic matter are used. In addition, the present application is not limited to these verification experiments.

[0210] Verification Experiment 1

[0211] The shape of the fine particles was confirmed using an optical microscope. First, a water suspension of polystyrene fine particles having a diameter of 1 pm (Polystyrene Red Dyed Microsphere 1.00 pm, manufactured by Polysciences) having a concentration of 2.4 vol% was centrifuged at 18,500 x g for one minute to concentrate, and a 10 vol% fine particle suspension was prepared. The suspension was observed using an optical microscope (ECLIPSE N, manufactured by Nikon) with a 40x objective lens and a cooled CCD camera (Orca-Flash 2.8, manufactured by Hamamatsu Photonics) in a bright field. Figure 6 is a photograph of the 10 vol% fine particle suspension in Verification Experiment 1. As a result, as shown in Figure 6 , a spherical structure having a diameter of 1 pm that was well dispersed could be confirmed as fine particles.

[0212] Verification Experiment 2

[0213] The movement of fine particles in a solution having the same density as the fine particles was investigated. First, a water suspension of polystyrene fine particles having a diameter of 1 pm (Polystyrene Red Dyed Microsphere 1.00 pm, manufactured by Polysciences) was mixed with various concentrations of a glycerol aqueous solution so as to have a final concentration of 0.005 vol% (9.1 x 10 7 particles were observed to settle in a glycerol aqueous solution having a concentration of less than 20 vol%, and it was considered that the density of the fine particles was the same as that of a 20 vol% glycerol aqueous solution (1.06 g / cm 3 ). In addition, the density of the solution was measured using a densitometer (DMA 4500M, manufactured by Anton Paar).

[0214] Thus, a 0.5 vol% (9.1 x 10 9The above microparticle water suspension was dispersed and suspended in 20 vol% glycerol aqueous solution in a manner such that 0.5 μL of the microparticle suspension was dropped into 1.5 mL of 20 vol% glycerol aqueous solution. Thereafter, the microparticle dispersion was left to stand at room temperature and the diffusion of the microparticles was observed. Figure 7 is a photograph showing the dropping of the microparticle suspension having a diameter of 1 μm into 20 vol% glycerol aqueous solution in Verification Test 2. As a result, as shown in Figure 7 , the diffusion of the microparticles was slight even after 4 hours of standing, indicating that the microparticle suspension can form a pattern (e.g., an image) in a solution as a pattern forming material (e.g., ink).

[0215] Verification Test 3

[0216] Using the microparticle liquid Al adjusted in Verification Test 2, the dependence of the diffusion amount of the microparticle liquid on the dropped amount thereof was investigated. The microparticle liquid was dropped into 1.5 mL of 20 vol% glycerol aqueous solution in an amount of 0.5 μL to 10 μL, respectively, and the diffusion of the microparticles was left to stand at room temperature and videoed. The image of the analysis object was binarized at a threshold value of 129 by an image processing software (ImageJ (NIH)) and the number of pixels was calculated, whereby the area occupied by the microparticle liquid Al observed in the video was calculated. The area at the time of the start of the measurement, 0.5 vol% of the microparticle concentration, and 0.5 μL of the dropped amount was taken as 1, and the area occupied by the microparticle liquid Al under each condition at that time was calculated. Figure 8 is a graph showing the diffusion of the microparticle suspension having a diameter of 1 μm when dropped into 20 vol% glycerol aqueous solution in various amounts in Verification Test 3. Figure 9 is a graph showing the diffusion of the microparticle suspension having a diameter of 1 μm when dropped into 20 vol% glycerol aqueous solution at a concentration of 0.5 vol% and an amount of 0.5 μL and left to stand for 4 hours in Verification Test 3. As a result, as shown in Figure 8 , the maximum increase in the area under each condition after 30 minutes of standing was also 7% or less of the initial value, as shown in Figure 9 , the increase in the area of the sample dropped with 0.5 μL for 4 hours was 3% or less of the initial value. From this result, it was found that the image formed by the microparticles does not depend on the amount of the microparticle suspension used, and that a pattern (e.g., an image) can be stably formed in a solution using the microparticles.

[0217] Verification Test 4

[0218] An attempt was made to form an image using a graphic forming material (ink) of microparticles of different particle diameters and concentrations. First, a water suspension of polystyrene microparticles of 0.2 μm in diameter (Polystyrene Red Dyed Microsphere 0.20 μm, manufactured by Polysciences, Inc.) was mixed with various concentrations of an aqueous glycerol solution in such a manner that the final concentration became 0.005% by volume (9.1 x 10 7 The result was that the settling of the microparticles was observed in an aqueous glycerol solution at a concentration of less than 20% by volume, and it was considered that the density of the microparticles was the same as that of an aqueous glycerol solution at a concentration of 20% by volume (1.06 g / cm 3 The density of the solution was measured by a densimeter (DMA 4500M, manufactured by Anton Paar).

[0219] Next, the water suspension of the above-described microparticles of 0.2 μm in diameter was dispersed and suspended in an aqueous glycerol solution at a concentration of 20% by volume, and a microparticle suspension at a concentration of 1% by volume (2.2 x 10 12 The microparticle liquid was dropped by 1 μL into 1.5 mL of an aqueous glycerol solution at a concentration of 20% by volume, left to stand at room temperature, and the diffusion of the microparticles was videoed. The image of the analysis object was binarized by threshold value 129 by image processing software (ImageJ (NIH)), and the number of pixels was calculated, whereby the area occupied by the obtained microparticle liquid A2 in the video was calculated. The area obtained by dropping the microparticle liquid at the start of the measurement was taken as 1, and the area occupied by the microparticle liquid A2 under each condition at that time was calculated. Figure 10 is a graph showing the diffusion of the microparticle suspension of 0.2 μm in diameter when dropped into an aqueous glycerol solution at a concentration of 20% by volume in Verification Experiment 4. The result was that, as shown in Figure 10 even after 150 minutes, the particles remained in suspension, and the areas were each about 14% of the initial value. From this result, it was known that even a graphic (for example, an image) formed of small microparticles of 0.2 μm in diameter was stably formed in the solution for several hours.

[0220] Verification Experiment 5

[0221] An attempt was made to form an image using an ink of microparticles. An aqueous glycerol solution at a concentration of 20% by volume was mixed with a water suspension of polystyrene microparticles of 0.2 μm in diameter (Polystyrene Red Dyed Microsphere 0.20 μm, manufactured by Polysciences, Inc.) in such a manner that the final concentration became 5% by volume (9.1 x 10 10A microparticle suspension was prepared by dispersing and suspending 1 μm diameter polystyrene microparticles (Polystyrene Red Dyed Microsphere 1.00 μm, manufactured by Polysciences) in a 20 vol% glycerol aqueous solution using a method of (particles / mL). This microparticle suspension was then used to coat three areas in the 20 vol% glycerol aqueous solution. Figure 11 This is a photograph taken during verification experiment 5, showing an image constructed using a 1 μm diameter microparticle suspension in a 20% (v / v) glycerol aqueous solution. (Example) Figure 11 As shown, it was learned that even after 10 minutes, the particulate suspension maintained the image, demonstrating that images can be stably formed in solution using particulate suspension.

[0222] Verification Experiment 6

[0223] Experiments were conducted using patterning materials (inks) with microparticles of different sizes and concentrations to form images. First, aqueous suspensions of polystyrene microparticles with diameters of 45 μm or 90 μm (Fluoresbrite Plain Microspheres 45 μm YG, manufactured by Polysciences, or Fluoresbrite Plain Microspheres 90 μm YG, manufactured by Polysciences) were prepared to achieve a final concentration of 1.4 vol% (45 μm; 3.0 × 10⁻⁶). 5 Cells / mL, 90μm; 3.8×10 4 The particles were mixed with aqueous glycerol solutions of various concentrations at a concentration of (particles / mL) and centrifuged at 18,500 × g for one minute. As a result, sedimentation of the particles was observed in aqueous glycerol solutions with concentrations less than 20% by volume, suggesting that the density of these particles was similar to that in a 20% by volume aqueous glycerol solution (1.06 g / mL). 3 The same. Furthermore, the density of the solution was measured using a densitometer (DMA 4500M, manufactured by Anton Paar).

[0224] Next, the aqueous suspension of the above-mentioned particles with a diameter of 45 μm or 90 μm was dispersed and suspended in a 20 vol% glycerol aqueous solution to achieve a concentration of 1.4 vol% (45 μm; 3.0 × 10⁻⁶). 5 Cells / mL, 90μm; 3.8×10 4A3 or the microparticle liquid A4) was dropped into 1.5 mL of a 20% by volume aqueous glycerol solution, and the diffusion of the microparticles was videoed while left standing at room temperature. The image of the analysis object was binarized with a threshold value of 129 by image processing software (ImageJ (NIH)), and the number of pixels was calculated, whereby the area occupied by the microparticle liquid A3 or the microparticle liquid A4 in the obtained video was calculated. The area obtained by dropping the microparticle liquid at the start of the measurement was taken as 1, and the area occupied by the microparticle liquid A3 or the microparticle liquid A4 at that time was calculated. Figure 12 is a graph showing the diffusion when the microparticle liquid A3 or the microparticle liquid A4 was dropped into a 20% by volume aqueous glycerol solution and left standing for 4 hours. As a result, as shown in Figure 12 , even after 4 hours, the particles were maintained in suspension, and the areas were each about 10% of the initial value. From this result, it was found that even with a pattern (e.g., image) formed by relatively large microparticles of 45 μm in diameter or 90 μm in diameter, the pattern was stably formed in the solution for several hours.

[0225] Comparative Verification Experiment 1

[0226] It was confirmed that when a low molecule was dropped, the image was not maintained. A 1% by weight aqueous solution of fluorescein sodium (CAS Registry No. 518-47-8, molecular weight 376) adjusted to the same density was dropped into 1.5 mL of a 20% by volume aqueous glycerol solution. Figure 13 is a photograph of the dropping of a 1% by weight aqueous solution of fluorescein sodium into a 20% by volume aqueous glycerol solution. As a result, as shown in Figure 13 , it was observed that although the particles floated immediately after the dropping, they were rapidly dispersed and moved within 30 seconds. From this, it was found that it was difficult to form an image in a solution with a low molecule.

[0227] Verification Experiment 7

[0228] An attempt was made to form an image using a pattern-forming material (ink) of microparticles composed of an edible raw material (edible organic substance), i.e., agarose. Also, this verification experiment corresponds to an embodiment of the present application. First, in order to replace the agarose microparticles of 90 μm in diameter (density 1.05 g / cm 3) was prepared. 100 μL of the agarose-made micro-particle suspension was added to 1 mL of a 20% by volume aqueous glycerol solution, and centrifugation was performed at 2,000 x g for 10 seconds. The precipitate was resuspended in 1 mL of a 20% by volume aqueous glycerol solution, and the centrifugation operation was repeated twice. Finally, the precipitate was resuspended in 100 μL of a 20% by volume aqueous glycerol solution, and a suspension of agarose-made micro-particles having a diameter of 90 μm (hereinafter, sometimes referred to as micro-particle liquid El) was obtained.

[0229] Next, the shape of the agarose-made micro-particles was confirmed using an optical microscope. Bright field observation of the micro-particle liquid El was performed using an optical microscope (ECLIPSE N, manufactured by Nikon Corporation) with a 10x objective lens and a refrigerated CCD camera (Orca-Flash 2.8, manufactured by Hamamatsu Photonics K.K.). Figure 14 is a photograph of the agarose-made micro-particle suspension in Verification Test 7 under an optical microscope. As a result, as shown in Figure 14 , a well-dispersed spherical configuration having a diameter of 90 μm was confirmed as a micro-sized particle.

[0230] Next, the dependence of the diffusion amount of the edible micro-particle liquid based on the amount of the liquid dropped was studied using the above-described micro-particle liquid El. 1 to 10 μL of the micro-particle liquid was dropped into 5 mL of a 20% by volume aqueous glycerol solution, and the diffusion of the micro-particles was imaged from the upper portion while being left at room temperature. The diameter of the micro-particle liquid El observed in the image was measured, and the area occupied by the micro-particle liquid El was calculated from the measured diameter. The area obtained when 1 μL of the micro-particle liquid was dropped at the start of the measurement was taken as 1, and the area occupied by each micro-particle liquid El at that time was calculated.

[0231] Figure 15 is a graph showing the diffusion when the agarose-made micro-particle suspension having a diameter of 90 μm was dropped into a 20% by volume aqueous glycerol solution and left for 4 hours in Verification Test 7. As a result, as shown in Figure 15 , the maximum increase in the area was about 10% of the initial value in 4 hours. From this result, it was found that even a pattern (e.g., an image) formed by edible micro-particles having a diameter of 90 μm is stably formed in a solution for several hours.

[0232] Comparative Verification Test 2

[0233] When the low molecule was dropped, it was confirmed by the same measuring system as in the verification experiment 7 that the image was not maintained. To 5 mL of a 20% by volume aqueous glycerol solution, 5 μL of a 1% by weight solution of sodium fluorescein (CAS Registry No. 518-47-8, molecular weight 376) (a solution suspended in a 20% by volume aqueous glycerol solution) was dropped. Figure 16 is a graph showing the diffusion when 1% by weight of a sodium fluorescein solution was dropped into a 20% by volume aqueous glycerol solution and left for 3 minutes. As a result, as shown in Figure 16 , it was confirmed that it dispersed rapidly immediately after dropping and diffused to more than 5 times the initial area after 3 minutes. It was thus known that it was difficult to form an image in a liquid in a solution of a low molecule.

[0234] Verification Experiment 8

[0235] It was verified that when the diameter L of the nozzle and the speed U of the nozzle in the liquid were U x L < 10 -3 m 2 / s, a good image was drawn.

[0236] First, in order to control the speed U of the nozzle and the discharge flow rate, a discharge device was constructed by combining a driver (EC-DS3M-150-1-MOT, manufactured by IAI Corporation, Japan) and a pump (QI-5-6R-UP-S, manufactured by TACMINA Corporation, Japan). The nozzle used was a product (PTFE needle TN-0.2-25, manufactured by Iwashita Engineering) having an outer diameter of 1 mm and an opening diameter (i.e., the diameter L of the nozzle) of 0.2 mm, and a product made by cutting a stainless steel pipe having an outer diameter of 5 mm and an inner diameter of 2 mm.

[0237] Furthermore, a water suspension of polystyrene microparticles having a diameter of 1 μm (Polystyrene Red Dyed Microsphere 1.00 μm, manufactured by Polysciences) was suspended in an aqueous glycerol solution having a final concentration of 20% by volume so as to have a final concentration of 0.2% by volume, and used as the ink.

[0238] In addition, as an aqueous solution to be drawn when a finer nozzle was used, an aqueous glycerol solution containing 0.5% by weight of carboxymethyl cellulose was used. The viscosity of this aqueous solution to be drawn at 25°C was evaluated using the value of the density measured by a densimeter (DMA 4500 M, manufactured by Anton Paar) and a tuning fork vibration type viscometer (SV-10, manufactured by A and D Corporation), and was 17 mPa-s, the same as the tomato juice.

[0239] In addition, as the water solution of the drawing object when a thicker nozzle was used, a 20% by volume glycerin water solution containing 1% by weight carboxymethyl cellulose was used. The viscosity of this water solution of the drawing object at 25°C was evaluated using the density determined by a densimeter (DMA 4500M, manufactured by Anton Paar) and the value of a tuning fork vibration type viscometer SV-10 (manufactured by A and D) and the result was 58 mPa s, which was the same as the Safflower oil.

[0240] The nozzle was selected in a manner such that the product (U x L) of the diameter L of the nozzle and the speed U of the nozzle became 0.03 x 10 -3 m 2 / s to 1.3 x 10 -3 m 2 / s, and the ink was discharged in the water solution and a line was drawn at various nozzle speeds.

[0241] The obtained line was videoed by an iPhone (registered trademark) SE (manufactured by Apple) and the deformation from a straight line was evaluated by visual observation with respect to 40 mm, which was the length of the drawn line. Specifically, when a straight line was drawn in the water solution, the line was twisted in a wavy manner due to the turbulent flow caused by the drawing operation depending on the conditions. The maximum length of the amplitude of the wave was determined by an image processing software (ImageJ (NIH)) and the value obtained by dividing the value of the length of the line 40 mm by this value was taken as the change rate (displacement of the line).

[0242] Figure 17 is a graph showing the results of evaluating the deviation of the line when a suspension containing microparticles of 1 pm in diameter at a concentration of 0.2% by volume was discharged in a 20% by volume glycerin water solution containing 0.5% or 1% by weight carboxymethyl cellulose at various nozzle diameters, moving speeds, and discharge amounts and a line of 40 mm in length was drawn in Verification Experiment 8. Also, Figure 17 In the graph, the quadrangle indicates the result when a thinner nozzle was used and the circle indicates the result when a thicker nozzle was used. As a result, as shown in Figure 17 , although the larger U x L was, the larger the change rate was, the change rate was 10% or less at 0.7 x 10 -3 m 2 / s, and a straight line could be drawn in the water solution. In addition, even at 10 -3 m 2 / s, the change rate was about 10%, and a straight line could be drawn in the water solution. On the other hand, it is expected that this will be further improved by increasing the viscosity of the water solution of the drawing object. That is, it was found that a good image could be obtained when U x L was 10 -3 m 2 / s or less.

[0243] Verification Experiment 9

[0244] The ratio of the value of the discharge amount X of the pattern forming material discharged from the nozzle divided by the opening area A of the tip of the nozzle to the velocity U of the nozzle ((X / A) / U, the ratio of the velocity) was evaluated.

[0245] The same verification device, ink, and water solution of the drawing object as in Verification Experiment 8 were used. In addition, a product (PTFE needle TN-0.2-25, manufactured by Iwashita Engineering Co.) having an outer diameter of 1 mm and an inner diameter of 0.2 mm was used for the nozzle. The velocity U of the nozzle was 102 mm / s.

[0246] That is, if the velocity U (m / s) of the nozzle = 102 x 10 -3 m / s,

[0247] The opening area A (m 2 ) of the nozzle = 0.031 x 10 -6 m 2 ,

[0248] then the discharge amount X satisfying the above Equation 1, U = X / A, is

[0249] Discharge amount X (m 3 / s) = U x A = 3.2 x 10 -9 m 3 / s = 3.2 μL / s = 192 μL / min,

[0250] This X was the most stable in this verification experiment, and it was considered that the discharge amount calculated therefrom was the most preferable.

[0251] In addition, since the velocity U of the nozzle and the opening area A of the nozzle were fixed, the ratio of the velocity (X / A) / U was changed by changing the discharge amount X. Specifically, in this verification experiment, the most stable discharge amount 192 μL / min was taken as 1, and experiments were performed in cases where the discharge amount was increased to 10 times (1916 μL / min) and decreased to 0.2 times (38 μL / min). That is, a line was drawn in the range of various discharge amounts 38 μL / min to 1916 μL / min.

[0252] After that, the deformation (change rate) of the obtained line was evaluated by the same method as in Verification Experiment 8. That is, the discharge amount 192 μL / min was taken as 1, and the relationship between the discharge amount and the deformation of the obtained line was evaluated.

[0253] Figure 18is a graph showing the results of evaluation of the deviation of a line when a line of 40 mm in length was drawn using a suspension containing 1-μm-diameter particles at a concentration of 0.2% by volume, which was discharged at various discharge rates into a 20% by volume aqueous glycerol solution containing 0.5% by weight of carboxymethyl cellulose, in Verification Test 9. As a result, as shown in Figure 18 the line deformation (change rate) obtained in the range of 0.2 to 10 was 10% or less, and the line could be drawn well.

[0254] From this result, it was known that when the ratio of the value of the discharge rate X of the pattern-forming material discharged from the nozzle divided by the opening area A of the tip of the nozzle ((X / A) / U, ratio of the speed) with respect to the speed U of the nozzle was 0.2 to 10, a good line could be drawn.

[0255] Reference

[0256] Reference 1: Hachinohe Institute of Technology Review, 2007, Vol. 26, pp. 9-13

[0257] Explanation of symbols

[0258] 10 - pattern-forming material;

[0259] 11 - particles;

[0260] 12 - first liquid;

[0261] 20 - second liquid;

[0262] 30 - pattern;

[0263] 40 - container;

[0264] 100, 200, 300 - manufacturing system of liquid with pattern;

[0265] 110, 210, 310 - liquid tank;

[0266] 120, 220, 320 - nozzle;

[0267] 130 - pump;

[0268] 140 - control device;

[0269] 150, 250 - stage;

[0270] 151, 152 - liquid delivery pipe;

[0271] 260 - gantry system;

[0272] 261 - x-axis guide rail;

[0273] 262 - z-axis guide rail;

[0274] 263 - z-axis drive motor;

[0275] 264 - y-axis guide rail;

[0276] 265 - y-axis drive motor;

[0277] 360 - robot arm.

Claims

1. A method of manufacturing a liquid having a pattern, characterized by, using a nozzle whose position is controllable, a pattern forming material in which first microparticles of a minute size containing a first edible organic substance are dispersed in a first liquid, discharging into a second liquid in which second microparticles of a minute size containing a second edible organic substance are dispersed at 0 vol% or more and 74 vol% or less, forming a pattern composed of the first microparticles, the diameters of the first microparticles and the second microparticles are 0.13 μm or more and 1000 μm or less, forming the pattern by discharging the pattern forming material from the nozzle into the second liquid with the nozzle immersed in the second liquid.

2. The method of claim 1, wherein the liquid having a pattern is characterized by The first microparticles constituting the pattern are not chemically bonded to each other and / or the second microparticles are not chemically bonded to each other by cross-linking.

3. The method of producing a liquid having a pattern according to claim 1 or 2, characterized by, The first microparticles and / or the second microparticles are coagulated by non-covalent bonding coagulation, and a sense of eating is produced.

4. The method of manufacturing a liquid having a pattern according to claim 1 or 2, characterized by, the ratio of the respective densities of the first microparticles and the second microparticles to the density of the second liquid is 0.9 or more and 1.1 or less, the ratio of the density of the second liquid to the density of the first liquid is 0.9 or more and 1.1 or less.

5. The method of producing a liquid having graphics according to claim 1 or 2, characterized by, The absolute value of the difference between the moisture contents of the first liquid and the second liquid is 0% or more and 50% or less.

6. The method of producing a liquid having graphics according to claim 1 or 2, characterized by, The viscosities of the first liquid and the second liquid are 0.8 mPa-s or more and 6 Pa-s or less at 25°C, respectively.

7. The method of producing a liquid having graphics according to claim 1 or 2, characterized by, The diameter L of the nozzle and the velocity U of the nozzle in the second liquid satisfy the relationship U x L < 10 -3 m 2 / s.

8. The method of producing a liquid having graphics according to claim 1 or 2, characterized by, The ratio of the value obtained by dividing the discharge flow rate X of the pattern forming material discharged from the nozzle by the opening area A of the tip of the nozzle to the speed U of the nozzle in the second liquid is 0.2 or more and 10 or less.

9. A manufacturing system of a liquid having a pattern, which is a manufacturing system of a liquid having a pattern in which a pattern is formed in a liquid, characterized by, comprising: a tank that houses a pattern forming material in which microparticles of a minute size containing an edible organic substance are dispersed in a first liquid; a nozzle that discharges the pattern forming material; a pump that supplies the pattern forming material to the nozzle; and a control device that controls the position of the nozzle and the discharge flow rate of the pattern forming material discharged from the nozzle, the diameters of the microparticles are 0.13 μm or more and 1000 μm or less, in a manner that the diameter L of the nozzle and the speed U of the nozzle satisfy U x L ≤ 10 -3 m 2 the control device discharges the pattern forming material from the nozzle while moving the nozzle in the second liquid in a manner that the diameter L of the nozzle and the speed U of the nozzle satisfy U x L ≤ 10

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