JP5651823B2 - Application method of edible ink - Google Patents

Description

The present invention relates to a method for applying edible ink by applying edible ink to an object such as various foods and medicines including fruits and vegetables by printing or the like.

Conventionally, as this type of edible ink, for example, a technique described in Patent Document 1 (Japanese Patent Laid-Open No. 2005-314697) is known.
This is a white edible ink made by mixing a white edible pigment made of shellfish powder with a solvent containing a spreading agent and a wetting agent. An edible pigment having a calcium content of 38% or more and a particle size of 1 to 8 μm as a powder under pulverization is produced by mixing with infant milk as a spreading agent and glycerin as a wetting agent in ethanol. And using this kind of edible ink, for example, it prints on food with an inkjet printer.

JP-A-2005-314697

By the way, in the above-mentioned conventional edible ink, the thickness of the coating applied to the object is about several tens of μm and is flat and thin. Therefore, the coating is raised from the coating surface and is thick and has a three-dimensional effect. There is a fact that it is difficult to emphasize the applied material in the form. In order to produce a three-dimensional effect, it is necessary to repeatedly coat and the like, and the work becomes complicated.
The present invention has been made in view of the above points, and the coating can be easily raised from the coating surface, and the coating can be emphasized in a thick and three-dimensional form. while so, and to provide a method for coating edible ink that can be easily workability.

The edible ink used in the coating method of the edible ink of the present invention for achieving such an object is produced in a liquid state by mixing an edible pigment with a solvent containing a spreading agent and a wetting agent. An edible ink that can be applied to a foaming agent that reacts with the reactive agent to cause the applied product to foam when the reactive agent is attached to the applied product in the state of being applied to the object. It is set as the structure which added. Here, it is desirable to select a reactive agent that is as non-reactive as possible with a solvent containing an edible dye, a spreading agent, and a wetting agent. However, even if the reactive agent has some reaction with any of the solvents including edible dyes, spreading agents and wetting agents, as long as the purpose of foaming can be achieved and the function as an ink can be maintained, there is no problem. . Moreover, it can respond by adjusting addition amount etc. so that the objective of foaming may be achieved and the function as an ink may be maintained.

  When this edible ink is applied to an object, for example, the edible ink is applied to the object by an appropriate means such as well-known pad printing, screen printing, inkjet printer printing, etc., and applied to the surface of the object. Form things. Then, a reactive agent is made to adhere to a coated material. Adhesion to the coated material is desirable as long as the coated material is not yet dried. This adhesion is performed by an appropriate means such as applying with a brush, instilling, or spraying with a sprayer. In the case of spraying, the reactants are evenly attached to the coated material, which is efficient. As a result, the foaming agent and the reactive agent in the coated product react to foam the coated product. For this reason, the coated material expands to increase the volume, and has a thick and three-dimensional form, so that the coated material is emphasized. Further, in this case, since the applied material can be foamed by a simple operation of simply attaching the reactant to the applied material, the operation can be performed very easily and workability can be improved.

  Here, examples of the object include objects that are mainly ingested or touched by the human body such as various foods and medicines. As food, various fruits such as apples, bananas, mandarin oranges, lemons, vegetables, cookies, biscuits, pies, chocolate, candy, caramel, chewing gum, jelly, rice crackers, potatoes, potato chips and other sweets, cheese, butter, etc. Dairy products, eggs, ham, sausages, kamaboko, chikuwa and other fish products. Examples of pharmaceuticals include tablets and capsules. Moreover, an edible sheet | seat is mentioned as a target object. An edible ink may be applied to the sheet, and the applied sheet may be attached to another object such as food.

  Examples of edible dyes include titanium oxide and calcium carbonate as white edible dyes. Examples of calcium carbonate include egg shell calcium and shell calcium. As the shell, one or more of various shells such as oysters, scallops, clams, swordfish shells, pearl oysters, and abalone shells can be used.

Colored edible pigments other than white include, for example, Yellow No. 4, Yellow No. 5, Blue No. 1, Blue No. 2, Patent Blue V, Red No. 2, Red No. 3, Red No. 40, Red No. 102, Red No. 104, Red No. 105, Green No. 3, and these aluminum lake dyes.
In addition, turmeric pigments, gardenia pigments, safflower pigments, tomato pigments, saffron pigments, cochineal pigments, monascus pigments, paprika pigments, astaxanthin, fiphia pigments, β-carotene pigments, butterfly pigments, red pepper pigments, red pepper pigments, anato pigments, Lac pigment, cochineal pigment, beet red pigment, red cabbage pigment, purple potato pigment, red radish pigment, grape skin pigment, perilla pigment, eldaberry pigment, purple corn pigment, anthocyanin pigment, polyphenol brown, chlorophyll, chlorophyllin, cacao pigment , Oyster pigments, cucumber pigments, chlorophylls, caramel pigments, riboflavin pigments, plant charcoal pigments, gold, silver, fish scale foils and the like.

  Examples of spreading agents include shellac, vegetable wax (eg, carnauba wax, candelilla wax, wood wax, rice wax, etc.), methyl cellulose, carboxymethyl cellulose calcium, carboxymethyl cellulose sodium, sodium alginate, propylene glycol alginate, starch glycol Examples thereof include sodium acid, starch phosphate sodium, sodium polyacrylate, pullulan, gum arabic, ester gum, pectin, duran gum, xanthan gum, and carrageenan.

  Examples of the wetting agent include glycerin, propylene glycol, sorbitol, saccharides, and other edible solvents, which can be used alone or in combination of two or more.

When the spreader and / or wetting agent cannot form a liquid, a solvent that dissolves the edible dye, the spreading agent, and the wetting agent is used. Examples of the solvent include ethanol, geraniol, sclareol and the like.
In addition, additives such as fatty acid ester surfactants, pH adjusters, silicone antifoaming agents and preservatives can be added as necessary.

And if needed, the said foaming agent is comprised with alkaline salt, and it is set as the structure which is the acidic solution with which the said reactive agent reacts with the said alkaline salt. Here, as the solvent containing the edible dye, the spreading agent, and the wetting agent, an anhydrous solvent is selected in relation to the foaming agent and the reactive agent.
Thereby, when an acidic solution is made to adhere to a coating material, alkaline salts and acidic solution react, and a coating material is made to foam by generation | occurrence | production of gas. In this case, it is desirable for the reactant to adhere to the coated material before the coated material is still dried.

In this configuration, the alkaline salt is not particularly limited as long as it can be used as a food additive, but a salt of organic acid or inorganic acid exhibiting alkalinity is preferably used. For example, as the alkaline salt, one or more kinds are selected from sodium bicarbonate, sodium carbonate, sodium bicarbonate, potassium carbonate, potassium bicarbonate, sodium hydroxide, potassium hydroxide and the like.
The acidic solution is not particularly limited as long as it can be used as a food additive, and for example, at least one kind is selected from a citric acid solution, a lactic acid solution, an acetic acid solution, and the like.

Moreover, the said foaming agent is comprised with acidic salt as needed, and it is set as the structure which is the alkaline solution with which the said reactive agent reacts with the said acidic salt. Here, as the solvent containing the edible dye, the spreading agent, and the wetting agent, an anhydrous solvent is selected in relation to the foaming agent and the reactive agent.
Thereby, when an alkaline solution is made to adhere to a coated material, acidic salts react with the alkaline solution, and the coated material is foamed by the generation of gas. In this case, it is desirable for the reactant to adhere to the coated material before the coated material is still dried.

In the above configuration, the acidic salts are not particularly limited as long as they can be used as food additives, but salts of organic acids or inorganic acids exhibiting acidity are preferably used. For example, at least one selected from citric acid, lactic acid, acetic acid and the like is selected.
The alkaline solution is not particularly limited as long as it can be used as a food additive. For example, at least one selected from a sodium bicarbonate solution and a calcium hydroxide solution is selected.

In the creation process of the present invention, it has been proposed that the foaming agent is composed of alkaline salts and acidic salts and water is used in place of the reactants, and is presented for reference. Here, as the solvent containing the edible dye, the spreading agent, and the wetting agent, an anhydrous solvent is selected in relation to the foaming agent and the water to be attached .
Thereby, when water is made to adhere to the coating, the alkaline salts and the acidic salts react with each other as an aqueous solution, and the coating is foamed by the generation of gas. In this case, it is desirable that the water adheres to the coated material before the coated material is not yet dried.
Here, alkaline salts and acidic salts are selected from the above.

In order to achieve the above object, the edible ink application method of the present invention is an edible ink application method for applying the edible ink to an object,
First, the edible ink is applied to an object to form an application on the surface of the object, and then the reactant is attached to the application to foam the application.
That is, when edible ink is applied to an object, the edible ink is applied to the object by an appropriate means such as well-known pad printing, screen printing, ink jet printer printing, etc. A coating is formed. Then, a reactive agent is made to adhere to a coated material. Adhesion to the coated material is desirable as long as the coated material is not yet dried. This adhesion is performed by an appropriate means such as applying with a brush, instilling, or spraying with a sprayer. As a result, the foaming agent and the reactive agent in the coated product react to foam the coated product. For this reason, the coated material expands to increase the volume, and has a thick and three-dimensional form, so that the coated material is emphasized. Further, in this case, since the applied material can be foamed by a simple operation of simply attaching the reactant to the applied material, the operation can be performed very easily and workability can be improved.

  If necessary, a liquid material is used as the reactive agent, and the reactive agent is sprayed on and adhered to the coated material. Since the spraying is performed, the reactants uniformly adhere to the coated material, so that the reaction efficiency is good and the whole can be foamed uniformly.

  According to the present invention, since the foaming agent and the reactive agent in the coating are reacted to foam the coating, the coating can be easily raised from the coating surface, and is thick and three-dimensional. It becomes possible to emphasize the coated material in the form. In addition, since the applied material can be foamed by a simple operation of simply attaching the reactant to the applied material, the operation can be performed very easily and the workability can be improved.

It is process drawing which shows the manufacturing method of the edible ink which concerns on embodiment of this invention. It is process drawing which shows the application | coating method of the edible ink which concerns on embodiment of this invention. It is a table | surface which shows Examples 1-6 of the edible ink which concerns on the Example of this invention with a comparative example, and shows the test result regarding the reflectance and chromaticity which concern on Experimental Example 3. FIG. It is a table | surface which concerns on Experimental example 1 and shows the color tone change of the calcium carbonate by the difference in the heating temperature of a shell. It is a table | surface figure which concerns on Experimental example 2 and shows the influence which the sorbitol solution density | concentration has on the particle size production | generation of a calcium carbonate. 4 is a drawing-substituting micrograph showing the particle state of the produced calcium carbonate according to Experimental Example 2. It is a figure which shows the state which applied the edible ink which concerns on Experimental Example 4,5,7,8,9 to the Example on the apple.

Hereinafter, edible inks and edible ink application methods according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The edible ink according to the embodiment of the present invention is produced in a liquid state by mixing an edible pigment with a solvent containing a spreading agent and a wetting agent, and is applied to an object by printing or the like. , when adhered with reactant in the coating material in a state of being applied to the Target product is obtained by adding a foaming agent to foam the coating material reacts with the reaction agent. FIG. 1 is a process diagram showing a method for producing edible ink according to an embodiment of the present invention.

Specifically, the edible ink according to the embodiment of the present invention is a white edible ink obtained by mixing a white edible pigment composed of shell powder into a solvent containing a spreading agent and a wetting agent to form a liquid. is there.
As the shell, one or more of various shells such as oysters, scallops, clams, swordfish shells, pearl oysters, and abalone shells can be used. In the embodiment, a scallop is used.

And in embodiment, using FIG. 1, a shell is heat-processed at 160 degreeC-400 degreeC, and makes the powder of calcium carbonate whose particle size is 20 micrometers or less, This powder is comprised as an edible pigment | dye. The shell is preferably heat-treated at 180 ° C to 380 ° C, more preferably 250 ° C to 380 ° C.
In the embodiment, as shown in FIG. 1, heavy calcium carbonate fine particles adjusted to 5 μm to 20 μm as edible dyes, and the production method is different from this heavy calcium carbonate fine particles, and adjusted to 0.1 μm to 10 μm. At least one of light calcium carbonate is used. Light calcium carbonate is suitable for inkjet printers.

Here, the production process for producing each edible pigment will be described. The production methods for heavy calcium carbonate and light calcium carbonate are different.
(A) Production of Heavy Calcium Carbonate Fine Particles As shown in FIG. 1, the shell is washed with water and then pulverized to a particle size of 3 mm or less using a known pulverizer, preferably 1 mm to 2 mm or less. Grind into. Next, the pulverized powder is heat-treated at 160 ° C. to 400 ° C. using an external heating rotary furnace. Desirably, heat treatment is performed at 180 ° C. to 380 ° C., and more desirably at 250 ° C. to 380 ° C.

  Then, it grinds further. This pulverization is performed by using an apparatus for forming fine particles, for example, a jet mill or a wet mill to form calcium carbonate powder having a particle size of 20 μm or less. Then, if necessary, powder having a particle size in the range of 5 μm to 20 μm is extracted by a known method such as filtration or centrifugation.

(B) Production of light calcium carbonate As shown in FIG. 1, the shell is washed with water and then pulverized to a particle size of 3 mm or less using a known pulverizer, preferably pulverized to 1 mm to 2 mm or less. To do. Next, the pulverized powder is heat-treated at 160 ° C. to 400 ° C. using an external heating rotary furnace. Desirably, heat treatment is performed at 180 ° C. to 380 ° C., and more desirably at 250 ° C. to 380 ° C.

  Next, it is calcined at 800 ° C. to 1200 ° C. to make calcium oxide by a known calcining apparatus. Next, this calcium oxide is poured into water to form calcium hydroxide. Next, while stirring the calcium hydroxide solution, carbon dioxide gas is blown into the calcium hydroxide solution to form calcium carbonate, which is then precipitated. The precipitated calcium carbonate is then collected. Thereafter, the particle size is adjusted to obtain calcium carbonate powder having a particle size of 10 μm or less.

  The particle size is adjusted as follows. The collected calcium carbonate is put into a sorbitol solution and stirred, and is allowed to stand for a predetermined time after stirring. Then, the floating part of the stationary solution is taken out. Finally, calcium carbonate having a particle size of 10 μm or less is extracted from the extracted solution by a centrifugal separator. Then, if necessary, a powder having a particle size in the range of 0.1 μm to 10 μm is extracted by a known method such as filtration. When used in an inkjet printer, it is desirable to extract a powder having a particle size in the range of 0.1 μm to 1 μm.

Further, as shown in FIG. 1, as the spreading agent, anhydrous ones were selected in relation to the foaming agent and the reactive agent described later, and carnauba wax that was shellac or vegetable wax was used.
As the wetting agent, an anhydrous one was selected in relation to a foaming agent and a reactive agent described later, and glycerin was used.
Moreover, the solvent for making an edible dye, a spreading agent, and a wetting agent into a liquid was used. As the solvent, an anhydrous solvent was selected in relation to the foaming agent and the reactant described later, and ethanol was used.

Furthermore, as shown in FIG. 1, in the embodiment, when a reactive agent is attached to a solvent in a state where it is applied to an object, foaming that reacts with the reactive agent to foam the applied material. The agent is added.
Examples of the combination of the foaming agent and the reactive agent include the following embodiments.
(1) Combination 1 (see ink composition II)
It is an acidic solution in which the foaming agent is composed of alkaline salts, and the reactant reacts with alkaline salts, provided that the solvent is composed of an anhydrous solvent.
As the alkaline salt, for example, sodium bicarbonate and baking powder were used.
Baking powder is composed of sodium bicarbonate, potassium hydrogen carbonate, calcium hydrogen carbonate, wheat flour, etc. using an edible material, and is mixed with bread making, cakes, etc., and then foamed and swollen by heat treatment.
For example, a citric acid solution was used as the acidic solution.
(2) Combination 2 (see ink composition III)
It is an alkaline solution in which the foaming agent is composed of acidic salts, and the reactant reacts with acidic salts, provided that the solvent is composed of an anhydrous solvent.
As acid salts, for example, citric acid and lactic acid were used. As the alkaline solution, for example, a sodium bicarbonate solution was used.
(3) Combination 3 (see ink composition IV)
Comprising that the solvent is composed of an anhydrous solvent, the foaming agent is composed of alkaline salts and acidic salts, and water is used instead of the reactant. The present combination 3 (see ink composition IV) was proposed in the creation process of the present invention, and is therefore presented for reference (hereinafter the same in the case of using water instead of the reactant). .
As the alkaline salt, for example, sodium bicarbonate was used. As acid salts, for example, citric acid and lactic acid were used.

More specifically, the edible ink according to the embodiment is as follows.
(1) 1st Embodiment 40-55 weight% of heavy calcium carbonate with a particle size of 5 micrometers-20 micrometers, 7-14 weight% of shellac, 5-40 weight% of glycerol, 13-26 weight% of ethanol, Composition composed of 2-15% by weight of alkaline salt (sodium bicarbonate or baking powder).
After printing, the coating is foamed by spraying an acidic solution of 2 to 15% by weight weak acid salts (such as citric acid or lactic acid).
(2) Second embodiment 40-55 wt% light calcium carbonate having a particle size of 0.1 μm to 10 μm, 7-14 wt% shellac, 5-40 wt% glycerin, 13-26 wt% ethanol , Composed of 2-15% by weight of an alkaline salt (sodium bicarbonate or baking powder).
After printing, the coating is foamed by spraying an acidic solution of 2 to 15% by weight weak acid salts (such as citric acid or lactic acid).
(3) Third Embodiment 35 to 45% by weight of light calcium carbonate having a particle size of 0.1 μm to 0.5 μm, 10 to 20% by weight of vegetable wax, 15 to 25% by weight of glycerin, and 10 of ethanol -25% by weight, composed of 2-15% by weight of alkaline salt (sodium bicarbonate or baking powder).
After printing, the coating is foamed by spraying an acidic solution of 2 to 15% by weight weak acid salts (such as citric acid or lactic acid).

(4) Fourth Embodiment 40-55 wt% heavy calcium carbonate having a particle size of 5 μm to 20 μm, 7-14 wt% shellac, 5-40 wt% glycerin, 13-26 wt% ethanol, A composition composed of 2 to 15% by weight of a weak acid salt (citric acid or lactic acid).
After printing, the coating is foamed by spraying 2-15% by weight alkaline solution (sodium bicarbonate solution).
(5) Fifth embodiment 40-55 wt% light calcium carbonate having a particle size of 0.1 μm to 10 μm, 7-14 wt% shellac, 5-40 wt% glycerin, 13-26 wt% ethanol A composition composed of 2 to 15% by weight of a weak acid salt (citric acid or lactic acid).
After printing, the coating is foamed by spraying 2-15% by weight alkaline solution (sodium bicarbonate solution).
(6) Sixth Embodiment 35 to 45% by weight of light calcium carbonate having a particle size of 0.1 to 0.5 μm, 10 to 20% by weight of vegetable wax, 15 to 25% by weight of glycerin, and 10 of ethanol. Composition composed of ˜25% by weight and weak acid salt (citric acid or lactic acid) at 2 to 15% by weight.
After printing, the coating is foamed by spraying 2-15% by weight alkaline solution (sodium bicarbonate solution).

(7) Seventh Embodiment 40-55 wt% heavy calcium carbonate having a particle size of 5 μm to 20 μm, 7-14 wt% shellac, 5-40 wt% glycerin, 13-26 wt% ethanol, A composition composed of 2 to 15% by weight of an alkaline salt (sodium bicarbonate or baking powder) and 2 to 15% by weight of a weakly acidic salt (such as citric acid or lactic acid).
After printing, the coating is foamed by spraying water.
(8) Eighth Embodiment Light calcium carbonate having a particle size of 0.1 μm to 10 μm is 40 to 55 wt%, shellac is 7 to 14 wt%, glycerin is 5 to 40 wt%, and ethanol is 13 to 26 wt%. And 2-15% by weight of an alkaline salt (sodium bicarbonate or baking powder) and 2-15% by weight of a weakly acidic salt (citric acid or lactic acid).
After printing, the coating is foamed by spraying water.
(9) Ninth Embodiment 35 to 45% by weight of light calcium carbonate having a particle size of 0.1 μm to 0.5 μm, 10 to 20% by weight of vegetable wax, 15 to 25% by weight of glycerin, and 10 of ethanol Composition composed of ˜25% by weight, 2-15% by weight of alkaline salt (sodium bicarbonate or baking powder), and 2-15% by weight of weakly acidic salt (such as citric acid or lactic acid).
After printing, the coating is foamed by spraying water.

Next, a method for applying edible ink according to an embodiment of the present invention will be described.
As shown in FIG. 2, first, an edible ink is applied to an object by an appropriate means such as, for example, well-known pad printing, screen printing, ink jet printer printing, etc. to form an application on the surface of the object. (FIG. 2 (a)). Then, a reactive agent is made to adhere to a coated material. Adhesion to the coated material is desirable as long as the coated material is not yet dried. This adhesion is performed by an appropriate means such as applying with a brush, instilling, or spraying with a sprayer (FIG. 2 (b)). In the case of spraying, the reactants are evenly attached to the coated material, which is efficient. As a result, the foaming agent and the reactive agent in the coated product react to foam the coated product (FIG. 2C). Therefore, as shown in FIG.2 (c), a coating material expand | swells and a volume increases, it becomes a thick and three-dimensional form, and a coating material comes to be emphasized. For example, even a coating material having a thickness of several tens of μm can be made to have a thickness of about 1 to 3 mm by foaming.
Further, in this case, since the applied material can be foamed by a simple operation of simply attaching the reactant to the applied material, the operation can be performed very easily and workability can be improved.
The edible ink according to the present embodiment can be used without necessarily being foamed. That is, an edible ink is applied to an object to form an application on the surface of the object, and then dried without attaching a reactant. As a result, the edible ink is fixed and can be held at a thickness of several tens of μm.

Next, an example is shown. In the examples, two types of calcium carbonate, heavy calcium carbonate made of scallop shells and light calcium carbonate, were used.
As heavy calcium carbonate, as shown in FIG. 1, scallop shells are washed with water, pulverized to 1 mm to 2 mm, and pulverized in an externally heated rotary furnace, and the granular material obtained at a temperature of 250 ° C. Using a dry high-speed rotary impact pulverizer (N-COS-1, manufactured by Nara Machinery Co., Ltd.), which is an apparatus for finely pulverizing each of the obtained fired products, the particle size is adjusted to 5 μm to 20 μm. It was adjusted.
As light calcium carbonate, as shown in FIG. 1, scallop shells are washed with water and then crushed to 1 mm to 2 mm, fired at 1000 ° C. in an external heating rotary furnace, and 10 g to 20 g of the fired powder is distilled. Throw in 1000 ml of water and throw the carbon dioxide into bubbling water at 300 rpm while collecting the precipitate. Place 1000 ml of 15.0 wt% sorbitol solution in a beaker prepared in advance and place the precipitate in the beaker. The mixture was allowed to stand for 5 hours after stirring, and the floating part was centrifuged at 8000 rpm for 60 minutes using a centrifuge to obtain a precipitate (light calcium carbonate). The particle size was about 0.5 μm to 5 μm.

As shown in FIG. 3, edible inks according to the following examples were produced using these heavy calcium carbonate or light calcium carbonate.
<Example 1 (type of ink composition II)>
Heavy calcium carbonate 50 wt%, shellac 8.75 wt%, ethanol 16.25 wt%, sodium bicarbonate 5 wt%, glycerin 20 wt%
<Example 2 (type of ink composition III)>
Heavy calcium carbonate 50 wt%, shellac 8.75 wt%, ethanol 16.25 wt%, citric acid 5 wt%, glycerin 20 wt%
<Example 3 (type of ink composition IV)>
Heavy calcium carbonate 50 wt%, shellac 8.75 wt%, ethanol 16.25 wt%, sodium bicarbonate 2.5 wt%, citric acid 2.5 wt%, glycerin 20 wt%

<Example 4 (type of ink composition III)>
Light calcium carbonate 50 wt%, shellac 8.75 wt%, ethanol 16.25 wt%, citric acid 5 wt%, glycerin 20 wt%
<Example 5 (type of ink composition IV)>
Light calcium carbonate 50 wt%, shellac 8.75 wt%, ethanol 16.25 wt%, citric acid 2.5 wt%, sodium bicarbonate 2.5 wt%, glycerin 20 wt%
<Example 6 (Type of ink composition II)>
Light calcium carbonate 50 wt%, shellac 8.75 wt%, ethanol 16.25 wt%, sodium bicarbonate 5 wt%, glycerin 20 wt%

Next, an experimental example is shown.
<Experimental example 1>
Using scallop shells as shells, this scallop shells were washed with water and crushed to 1 mm to 2 mm, and as shown in FIG. High-speed rotational impact pulverizer (N-COS-1, Co., Ltd.), which is an apparatus for firing at 180 ° C., 250 ° C., 380 ° C., 450 ° C., and 600 ° C. The particle size was adjusted to 5 μm to 20 μm using Nara Machinery Co., Ltd. to obtain heavy calcium carbonate fine particles. And as shown in FIG. 4, the color tone was compared about each fine particle. As a result, the whiteness was 180 ° C to 380 ° C.

<Experimental example 2>
In the same manner as described above, the scallop shell was washed with water, pulverized to 1 mm to 2 mm, and fired at 1000 ° C. in an external heating type rotary furnace to obtain a fired powder. 10 g to 20 g of the calcined powder was put into 1000 ml of distilled water, and carbon dioxide gas was bubbled into the running water while stirring at 300 rpm. The resulting precipitate was collected. Into a beaker prepared in advance, 1000 ml of 5.0% by weight, 10.0% by weight, 15.0% by weight and 20.0% by weight of each sorbitol solution was placed, and the precipitate was put in the beaker and stirred for 5 hours. The suspension was allowed to stand, and the floating part was centrifuged at 8000 rpm for 60 minutes using a centrifuge to obtain a precipitate (light calcium carbonate). Their whiteness and particle size were compared. The results are shown in FIG. As a result, it was found that light calcium carbonate having a particle size of about 0.5 μm to 5 μm can be efficiently obtained with a 10.0 wt% to 15.0 wt% sorbitol solution.
Further, FIG. 6 shows a drawing-substituting electron micrograph showing light calcium carbonate. From this micrograph, it can be seen that it is fine powder calcium carbonate having a constant particle size.

<Experimental example 3>
As shown in FIG. 3, with respect to Examples 1 to 6 described above, together with the comparative example, a printing test was performed to check the reflectance, chromaticity, and fixing condition. Printing was by pad printing or stencil printing. As a comparative example, a composition having a composition of 30% by weight of titanium dioxide, 30% by weight of shellac, 30% by weight of ethanol and 10% by weight of glycerin was used. The measuring device used was a spectroscopic color difference meter (SE-2000), manufactured by Nippon Denshoku Industries Co., Ltd. The XYZ color system is the basis for each color system as a CIE standard colorant. That is, using the chromaticity diagram, the color is represented by three of Yxy. Y is reflectance (%) and corresponds to lightness, and xy represents chromaticity. The results are shown in the figure. From this result, it is said that the white of the comparative example (titanium dioxide) is the strongest, but each example obtained the same reflectivity and chromaticity as compared with the comparative example (titanium dioxide). It can be seen that there was no discoloration and whiteness was improved.

<Experimental example 4>
Using the ink composition according to each example, pad printing was performed on an apple as shown in FIG. Whiteness and transferability were good and printing was easy.
<Experimental example 5>
Using the ink composition according to each example, as shown in FIG. 7, when the screen was printed on a transfer sheet and transferred to an apple, it was easy to print with good whiteness and transferability.

<Experimental example 6>
Moreover, it printed in the inkjet printer using the ink composition containing 25-55 weight% of light calcium carbonate with a particle size of 0.1 micrometer-0.5 micrometer. As a result, good printing results could be obtained.

<Experimental example 7>
Next, Example 1 (ink composition containing 5% by weight of sodium bicarbonate) was printed on an apple as shown in FIG. 7, and then as shown in FIG. 2 (b) 5-15% by weight of citric acid was sprayed on the coating material, and the shape of the coating material was observed and experimented. As a result, as shown in FIG. 2 (c), the coated material foamed and raised to an embossed three-dimensional shape. The height of the emboss was about 1 to 3 mm.
<Experimental Example 8>
Moreover, about Example 2 (ink composition which mix | blended citric acid in the ratio of 5 weight%), as shown in FIG. 7, it prints on an apple, Then, as shown in FIG.2 (b), the coating material 5 to 15% by weight of sodium bicarbonate solution was sprayed to observe the shape of the solution. As a result, as shown in FIG. 2 (c), the coated material foamed and raised to an embossed three-dimensional shape. The height of the emboss was about 1 to 3 mm.
<Experimental Example 9>
Further, Example 3 (ink composition containing 2.5% by weight of citric acid and 2.5% by weight of sodium bicarbonate) was printed on an apple as shown in FIG. 7, and then FIG. 2 (b) As shown in Fig. 4, water was sprayed on the coated material, and the shape was observed and experimented. As a result, as shown in FIG. 2 (c), the coated material foamed and raised to an embossed three-dimensional shape. The height of the emboss was about 1 to 3 mm.

<Experimental example 10>
With the ink composition according to each example, printing experiments of pad printing and screen printing were performed on an edible film mainly composed of agar or gelatin. As a result, all showed good printing forms.

  As described above, since the ink composition provided by the present invention is blended with edible components, it is possible to print pictograms and figures on foods such as fruits and confectionery, and for foods with a colored background. This is effective when edible white ink is required. In addition, since it is possible to create a processed character such as embossing, it is extremely effective when creating printed materials in various forms.

Claims (3)

In the edible ink application method for applying edible ink to an object,
As the edible ink, an edible dye is mixed with a solvent containing a spreading agent and a wetting agent, and is produced in a liquid state and applied to an object. The edible ink is applied to the object. When a reactive agent is attached to the coated product in an applied state, a foaming agent that reacts with the reactive agent to foam the coated material is added, and an edible ink in which the foaming agent is composed of an alkaline salt is used.
As the reactant, a reactant composed of an acidic solution that reacts with the alkaline salt is used.
First, the edible ink is applied to an object to form an application on the surface of the object, and then the reactant is attached to the application to foam the application. Application method of edible ink.   In the edible ink application method for applying edible ink to an object,
  As the edible ink, an edible dye is mixed with a solvent containing a spreading agent and a wetting agent, and is produced in a liquid state and applied to an object. The edible ink is applied to the object. When a reactive agent is attached to the coated product in an applied state, a foaming agent that reacts with the reactive agent to foam the coated product is added, and an edible ink in which the foaming agent is composed of acidic salts is used.
  As the reactant, a reactant composed of an alkaline solution that reacts with the acidic salts is used.
  First, the edible ink is applied to an object to form an application on the surface of the object, and then the reactant is attached to the application to foam the application. Application method of edible ink. The edible ink coating method according to claim 1 or 2 , wherein a liquid material is used as the reactive agent, and the reactive agent is sprayed and adhered to the coated material.