WO2019065512A1 - Composition d'encre aqueuse pour jet d'encre, procédé pour supprimer l'altération d'images imprimées sur des préparations solides, et préparation solide - Google Patents

Composition d'encre aqueuse pour jet d'encre, procédé pour supprimer l'altération d'images imprimées sur des préparations solides, et préparation solide Download PDF

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Publication number
WO2019065512A1
WO2019065512A1 PCT/JP2018/035107 JP2018035107W WO2019065512A1 WO 2019065512 A1 WO2019065512 A1 WO 2019065512A1 JP 2018035107 W JP2018035107 W JP 2018035107W WO 2019065512 A1 WO2019065512 A1 WO 2019065512A1
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WIPO (PCT)
Prior art keywords
fading
ink composition
aqueous ink
printed image
red
Prior art date
Application number
PCT/JP2018/035107
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English (en)
Japanese (ja)
Inventor
悠人 榎本
Original Assignee
株式会社Ｓｃｒｅｅｎホールディングス
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Filing date
Publication date
Priority claimed from JP2018172657A external-priority patent/JP7190297B2/ja
Application filed by 株式会社Ｓｃｒｅｅｎホールディングス filed Critical 株式会社Ｓｃｒｅｅｎホールディングス
Priority to KR1020207004290A priority Critical patent/KR102290817B1/ko
Priority to CN201880055466.8A priority patent/CN111094475B/zh
Publication of WO2019065512A1 publication Critical patent/WO2019065512A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/30—Inkjet printing inks
    • C09D11/32—Inkjet printing inks characterised by colouring agents
    • C09D11/322—Pigment inks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/40—Printing on bodies of particular shapes, e.g. golf balls, candles, wine corks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0023—Digital printing methods characterised by the inks used
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0082—Digital printing on bodies of particular shapes
    • B41M5/0088—Digital printing on bodies of particular shapes by ink-jet printing
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B63/00—Lakes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/30—Inkjet printing inks
    • C09D11/38—Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes

Definitions

  • the present invention relates to an aqueous ink composition for inkjet, a method for suppressing fading of a printed image of a solid preparation, and a solid preparation. More specifically, the present invention relates to an aqueous ink composition for ink jet that can suppress fading and discoloration of a printed image formed on the surface of a solid preparation such as pharmaceuticals and foods, and a method for suppressing fading of a printed image of a solid preparation And solid preparations.
  • Ink-jet inks for tablets, capsules and the like are roughly classified into pigment inks in which pigments are dispersed, and dye inks using dyes.
  • Dye inks are excellent in color development, but have problems with moisture resistance and light resistance. Specifically, dye ink has problems such as occurrence of bleeding due to moisture and fading due to light.
  • pigment inks are excellent in moisture resistance and light resistance, but are inferior in color developability as compared to dyes.
  • Patent Document 1 discloses a lake pigment ink in which a lake pigment is dispersed.
  • the lake pigment is a pigment obtained by insolubilizing a dye that is soluble in water. Therefore, the lake pigment ink has the same vividness as a dye ink and has moisture resistance because it is pigmented.
  • the lake pigment contained in the lake pigment ink originally is a dye, there remains a problem in light resistance. That is, the photodegradation of the dye contained as a component of the lake pigment discolors the printed image and reduces the saturation.
  • One object of the present invention is to provide an aqueous inkjet ink composition capable of suppressing fading of printed images on the surface of solid preparations such as pharmaceuticals and foods, a method of suppressing fading of printed images of solid preparations, and solid preparations. It is.
  • the inkjet aqueous ink composition comprises an edible lake pigment and a fading inhibitor.
  • the lake pigment comprises a dye containing at least one selected from the group consisting of Red No. 2, Red No. 3, Red No. 40, Red No. 102, Yellow No. 4, Yellow No. 5, Blue No. 1 and Blue No. 2.
  • the antifading agent comprises at least one selected from the group consisting of monosaccharides, disaccharides, dextrins and sugar alcohols.
  • the content of the fading inhibitor is 50% by mass or less based on the total mass of the aqueous ink composition.
  • the lake pigment may contain, as an optional component, a lake pigment other than the specific lake pigment.
  • the dye which is a component of the specific lake pigment has a property of decomposing (photodegrading) by light irradiation.
  • the fading inhibitor exerts the function of suppressing the photodegradation to the specific lake pigment containing such a dye. Therefore, in the water-based ink composition having the above-described structure, deterioration of the printed image due to fading can be reduced.
  • the content of the fading inhibitor is 50% by mass or less based on the total mass of the aqueous ink composition, the fading inhibitor can not be sufficiently dissolved in the aqueous ink composition and is precipitated. It can be suppressed or prevented.
  • the monosaccharide contains at least either galactose or fructose.
  • the disaccharide preferably contains at least one of maltose and trehalose.
  • the dextrins preferably contain cyclodextrin.
  • the sugar alcohols include at least one selected from the group consisting of reduced isomaltulose, xylitol and sorbitol.
  • one embodiment of the present invention provides a method for suppressing fading of a printed image printed on a solid preparation.
  • This method includes a preparation step of preparing an inkjet aqueous ink, a printing step of forming the printed image on the surface of the solid preparation by an inkjet method using the inkjet aqueous ink, and a fading suppression step.
  • the inkjet water-based ink contains an edible lake pigment and a fading inhibitor.
  • the lake pigment comprises a dye containing at least one selected from the group consisting of Red No. 2, Red No. 3, Red No. 40, Red No. 102, Yellow No. 4, Yellow No. 5, Blue No. 1 and Blue No. 2. Contains specific lake pigments.
  • the antifading agent comprises at least one selected from the group consisting of monosaccharides, disaccharides, dextrins and sugar alcohols.
  • the content of the fading inhibitor is 50% by mass or less based on the total mass of the aqueous ink composition.
  • the lake pigment may contain, as an optional component, a lake pigment other than the specific lake pigment.
  • the fading suppression step is a step in which the fading inhibitor in the printed image suppresses the photodegradation of the specific lake pigment.
  • an aqueous ink for inkjet including an aqueous ink composition containing a fading inhibitor such as a monosaccharide is prepared (preparation step), and printing is performed on the surface of a solid preparation by the inkjet method using the aqueous ink Printing process). Furthermore, the fading inhibitor in the printed image suppresses the photodegradation of the specific lake pigment (fading suppression step). Thereby, it is possible to suppress the fading of the printed image caused by the photodegradation of the specific lake pigment in the aqueous ink composition. That is, with the method described above, it is possible to suppress fading due to photodegradation of a printed image printed on a solid preparation by an inkjet method, and maintain good visibility of the printed image. As a result, for example, when product information is printed on the surface of a solid lumber, it is possible to prevent dispensing errors, accidental ingestion, and the like.
  • the fading suppressing step is carried out according to JIS Z Z of the printed image of the solid preparation after the irradiation of visible light having an accumulated light amount of 1.2 million luxes based on the printed image of the solid preparation immediately after the printing step. It is preferable to set the color difference ⁇ E * (ab) of the L * a * b * color system according to 8781 to 17 or less (more preferably 9 or less).
  • the monosaccharide contains at least either galactose or fructose.
  • the disaccharide preferably contains at least one of maltose and trehalose.
  • the dextrins preferably include cyclodextrin.
  • the sugar alcohol preferably contains at least one selected from the group consisting of reduced isomaltulose, xylitol and sorbitol.
  • one embodiment of the present invention provides a solid preparation having a dry film of an aqueous ink for ink jet on its surface.
  • the inkjet aqueous ink contains the above-described aqueous ink composition.
  • the anti-fading agent is contained in the dry film of the ink-jet ink. Since the said fading inhibitor suppresses that a specific lake pigment is photolyzed by light irradiation as mentioned above, it can reduce fading of the printing image which a dry film forms. Thereby, the visibility fall of a printing image can be suppressed. As a result, it is possible to provide a solid preparation capable of preventing dispensing errors and accidental ingestion.
  • the anti-fading agent consisting of monosaccharides, disaccharides, dextrins and sugar alcohols reduces the fading of printed images caused by the irradiation of specific lake pigments containing dyes such as Red No. 2 with light. be able to.
  • the present invention it is possible to suppress fading of printed images in solid preparations such as pharmaceuticals and foods.
  • solid preparations such as pharmaceuticals and foods.
  • an aqueous ink composition for ink jet that can improve the light resistance of a printed image, a method of suppressing fading of a printed image of a solid formulation, and a solid formulation.
  • aqueous ink composition for inkjet
  • aqueous ink composition for inkjet according to one embodiment
  • the aqueous ink composition of the present embodiment is an aqueous ink containing at least an edible lake pigment and an antifading agent, wherein the main solvent is water.
  • the aqueous ink composition of the present embodiment can have an edible property by using a material conforming to the standard of the pharmaceutical additive, the Japanese Pharmacopoeia, or the official document of the food additive prescribed by the Pharmaceutical Affairs Law, and It can be suitably used for inkjet recording.
  • the inkjet recording is an image recording method in which an aqueous ink composition is discharged as droplets from a fine inkjet head, and the droplets are fixed on a recording medium to form an image.
  • the "edible" possessed by the lake pigment means that it is recognized as a substance which is permitted to be orally administered as a drug or a drug additive, and / or as a food or a food additive.
  • the lake pigment is a specific pigment comprising at least one dye selected from the group consisting of Red No. 2, Red No. 3, Red No. 40, Red No. 102, Yellow No. 4, Yellow No. 5, Blue No. 1 and Blue No. 2.
  • Contains laked pigment In addition to the specific lake pigment, the lake pigment may contain other lake pigments as required.
  • the other lake pigment is not particularly limited as long as it is edible.
  • a specific example is a lake pigment made of an aluminum lake.
  • the content of the specific lake pigment is in the range of 0.5% by mass to 12% by mass with respect to the total mass of the aqueous ink composition. Is preferably, and more preferably in the range of 1% by mass to 5% by mass.
  • the content of the specific lake pigment is 0.5% by mass or more, the density of the printed image can be prevented from becoming insufficient.
  • the content of the specific lake pigment is 12% by mass or less, it is possible to prevent discharge failure caused by deposition of the lake pigment component on the nozzle in the nozzle of the inkjet head.
  • the lake pigment which comprises aqueous ink composition contains other lake pigments other than a specific lake pigment
  • content of another lake pigment can be suitably set up according to the kind etc.
  • the fading inhibitor has a function of suppressing photodecomposition of a specific lake pigment by light irradiation such as natural light. Since the dye contained in the component of the specific lake pigment is photolyzed by light irradiation, there is a risk that the printed image may be light faded (yellow color) with only the specific lake pigment. However, since the antifading agent suppresses the photodegradation of such specific lake pigments, it is possible to reduce the fading of the printed image.
  • amber color means that the specific lake pigment contained in the printed image is photolyzed due to the influence of natural light or the like, whereby the color tone of the printed image is irreversibly changed or the printed image is deteriorated.
  • the discoloration inhibitor comprises at least one selected from the group consisting of monosaccharides, disaccharides, dextrins and sugar alcohols.
  • the monosaccharide is not particularly limited, and specific examples include glucose, galactose, mannose, fructose and the like. Among these, galactose and fructose are preferred in the present embodiment.
  • the disaccharide is not particularly limited, and specific examples include sucrose (sucrose, sugar), lactose (lactose), maltose, trehalose, palatinose (isomaltulose) and the like. Among these, maltose and trehalose are preferred in the present embodiment.
  • the dextrins are not particularly limited, and specific examples include cyclodextrin and the like.
  • the cyclodextrin is not particularly limited, and specific examples thereof include ⁇ -cyclodextrin, ⁇ -cyclodextrin, ⁇ -cyclodextrin, ⁇ -cyclodextrin and the like.
  • the sugar alcohols are not particularly limited, and specific examples thereof include mannitol, erythritol, reduced isomaltulose, xylitol, sorbitol and the like.
  • the reduced isomaltulose is a compound obtained by reducing isomaltulose by hydrogenation or the like.
  • Reduced isomaltulose is ⁇ -D-glucopyranosyl-1,1-mannitol (hereinafter referred to as “GPM”) and ⁇ -D-glucopyranosyl-1,6-sorbitol (hereinafter referred to as “GPS-6”).
  • GPM ⁇ -D-glucopyranosyl-1,1-mannitol
  • GPS-6 ⁇ -D-glucopyranosyl-1,6-sorbitol
  • a mixture of The mixing ratio of GPM and GPS-6 is not particularly limited, but usually, they are mixed in approximately equimolar amounts.
  • Each of the above-mentioned fading inhibitors may be used alone or in combination of two or more.
  • the content of the fading inhibitor is 50% by mass or less, preferably 1% by mass to 15% by mass, and more preferably 5% by mass to 10% by mass, based on the total mass of the aqueous ink composition.
  • the content thereof is preferably 20% by mass or less, preferably 1% by mass to 15% by mass, based on the total mass of the aqueous ink composition. And more preferably 3% by mass to 8% by mass.
  • the aqueous ink composition of the present embodiment contains water (water as a main solvent).
  • water it is preferable to use pure water such as ion exchange water, ultrafiltration water, reverse osmosis water, distilled water, or water from which ionic impurities such as ultrapure water have been removed.
  • water sterilized by ultraviolet irradiation or hydrogen peroxide addition is preferable because it can prevent the generation of mold and bacteria over a long period of time.
  • the content of water is not particularly limited, and can be appropriately set as needed.
  • additives may be blended as long as they meet the criteria of the pharmaceutical additive, the Japanese Pharmacopoeia, or the official document of the food additive prescribed by the Pharmaceutical Affairs Law. Good.
  • additives include surface tension modifiers, wetting agents, water-soluble resins, organic amines, surfactants, pH adjusters, chelating agents, preservatives, viscosity modifiers, antifoam agents, and the like.
  • the content of these additives is not particularly limited except for the surface tension regulator and the wetting agent, and can be appropriately set as needed. The contents of the surface tension regulator and the wetting agent will be described later, respectively.
  • the surface tension regulator is not particularly limited as long as it conforms to the standards of the Pharmaceutical Affairs Law and the like, and specific examples thereof include glycerin fatty acid ester and the like.
  • glycerin fatty acid esters include caprylic acid decaglyceryl, lauric acid hexaglycerin ester, oleic acid hexaglycerin ester, condensed linolenic acid tetraglycerin ester, decaglyceryl laurate having an HLB (Hydrophilic-Lipophilic Balance) value of 15 or less, HLB Deglyceryl oleate etc. whose value is less than 13 are mentioned. You may use these individually by 1 type or in mixture of 2 or more types.
  • a commercially available product can be used as decaglyceryl caprylate, and as an example of such a commercially available product, Ryoto (registered trademark) polyglyester CE19D (trade name, manufactured by Mitsubishi Chemical Foods Corporation, HLB value 15) And SY Greister MCA 750 (trade name, manufactured by Sakamoto Yakuhin Kogyo Co., Ltd., HLB value 16), and the like.
  • Ryoto registered trademark
  • polyglyester CE19D trade name, manufactured by Mitsubishi Chemical Foods Corporation, HLB value 15
  • SY Greister MCA 750 trade name, manufactured by Sakamoto Yakuhin Kogyo Co., Ltd., HLB value 16
  • the HLB value is an HLB value according to the Griffin method, and is defined by the following equation.
  • HLB value 20 ⁇ (sum of formula weight of hydrophilic group / molecular weight)
  • the HLB value is a value within the range of 0 to 20. The larger the HLB value, the stronger the hydrophilicity, and the smaller the HLB value, the stronger the hydrophobicity.
  • decaglyceryl laurate one having an HLB value of 15 or less can be used.
  • the discharge stability is deteriorated, for example, the occurrence of blurring and the like due to clogging of the nozzle of the ink jet head.
  • the lower limit of the HLB value is preferably 10 or more from the viewpoint of solubility in a water solvent.
  • a commercially available product can be used as the deglyceryl laurate having an HLB value of 15 or less, and an example of such a commercially available product is NIKKOL (registered trademark) DECAGLYN 1-L (trade name, Nikko Chemicals Co., Ltd.) (Manufactured by Sakamoto Yakuhin Kogyo Co., Ltd., HLB value 14.8), and the like.
  • decaglyceryl oleate one having an HLB value of less than 13 can be used.
  • the HLB value is 13 or more, the discharge stability is degraded, for example, the occurrence of blurring and the like due to clogging of the nozzle of the inkjet head.
  • the lower limit of the HLB value is preferably 10 or more from the viewpoint of solubility in a water solvent.
  • deglyceryl oleate having a HLB value of less than 13 commercially available products can be used, and as an example of such commercially available products, NIKKOL (registered trademark) DECAGLYN 1-OV (trade name, Nikko Chemicals Co., Ltd.) Manufactured by HL B value 12), SY Glyster MO-7S (trade name, manufactured by Sakamoto Yakuhin Kogyo Co., Ltd., HLB value 12.9), and the like.
  • a commercial item can be used as lauric acid hexaglycerin ester, and as an example of such a commercial item, NIKKOL (registered trademark) HEXAGLYN 1-L (trade name, manufactured by Nikko Chemicals Co., Ltd., HLB value 14) And SY Glyster ML-500 (trade name, manufactured by Sakamoto Yakuhin Kogyo Co., Ltd., HLB value 13.5), and the like.
  • NIKKOL registered trademark
  • HEXAGLYN 1-L trade name, manufactured by Nikko Chemicals Co., Ltd., HLB value 14
  • SY Glyster ML-500 trade name, manufactured by Sakamoto Yakuhin Kogyo Co., Ltd., HLB value 13.5
  • a commercially available product can be used as the condensed linolenic acid tetraglycerin ester, and examples of such a commercially available product include SY Glyster CR-310 (trade name, manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.).
  • the content of the surface tension regulator is preferably in the range of 0.1% by mass to 10% by mass, and more preferably in the range of 0.5% by mass to 5% by mass, based on the total mass of the aqueous ink composition. It is more preferable that When printing is performed by the inkjet method when the content of the surface tension adjusting agent is 0.1% by mass or more, discharge failure due to meniscus formation failure or the like in the nozzle of the ink jet head is prevented, and clogging of the nozzle Can be prevented. As a result, the ejection stability can be improved. On the other hand, when the content of the surface tension regulator is 10% by mass or less, it is possible to prevent the adverse effect on the discharge due to the insoluble portion of the surface tension regulator or the emulsification failure.
  • the wetting agent is not particularly limited as long as it meets the standards of the Pharmaceutical Affairs Law and the like, and specific examples include propylene glycol, glycerin and the like.
  • the amount of the wetting agent added is preferably 3% by mass to 50% by mass, and more preferably 10% by mass to 40% by mass, with respect to the total mass of the aqueous ink composition.
  • the method for suppressing fading of a printed image of a solid preparation of the present embodiment includes a preparation step of preparing an inkjet aqueous ink (hereinafter sometimes referred to as "aqueous ink") containing the above-mentioned aqueous ink composition, and an aqueous ink.
  • the method includes at least a printing step of performing inkjet printing on a solid preparation by using, and a fading suppression step of suppressing fading of a printed image.
  • the step of preparing the aqueous ink may include the step of manufacturing the aqueous ink composition.
  • the process of producing the aqueous ink composition can be carried out by mixing the above-mentioned components in an appropriate manner. That is, the lake pigment, the fading inhibitor, water and, if necessary, the additives are mixed and sufficiently stirred. Further, if necessary, filtration is performed to remove coarse particles and foreign substances that cause clogging. Thus, the aqueous ink composition according to the present embodiment can be obtained.
  • the method of mixing the materials is not particularly limited.
  • materials can be sequentially added to a container equipped with a stirring device such as a mechanical stirrer or a magnetic stirrer to perform stirring and mixing.
  • a stirring device such as a mechanical stirrer or a magnetic stirrer to perform stirring and mixing.
  • the filtration method is not particularly limited, and, for example, centrifugal filtration, filter filtration and the like can be adopted.
  • the printing step is a step of printing an image on the surface of the solid preparation by an inkjet method. More specifically, an aqueous ink is discharged as an ink droplet from a fine nozzle to a solid preparation, and the ink drop is adhered to the surface of the solid preparation to perform image printing.
  • the ejection method is not particularly limited, and for example, known methods such as continuous injection type (charge control type, spray type, etc.), on-demand type (piezo type, thermal type, electrostatic suction type, etc.) may be employed. it can.
  • the printing conditions such as the ejection amount of the ink droplet and the printing speed are not particularly limited, and can be appropriately set as needed.
  • the printing step includes a drying step of drying the ink droplets attached to the surface of the solid preparation.
  • the drying method is not particularly limited, and in addition to hot air drying, natural drying and the like can be performed. Further, the drying conditions such as the drying time and the drying temperature are not particularly limited, and can be appropriately set according to the discharge amount of the ink droplet, the type of the aqueous ink composition, and the like.
  • the fading suppression step is a step of suppressing the photodegradation of the specific lake pigment due to light irradiation by the fading suppression agent contained in the printed image.
  • the change in color of the printed image is L based on the printed image immediately after printing.
  • the fading suppression step can suppress the color difference ⁇ E * (ab) to 17 or less, preferably 0 to 10, more preferably 0 to 5.
  • the printed image immediately after printing means the printed image after drying as described above.
  • ⁇ E * (ab) is a color difference in accordance with JIS Z8781 and is represented by the following general formula (1). That is, ⁇ E * (ab) represents a change in color from the print image immediately after printing.
  • ⁇ E * (ab) (( ⁇ L * 2 ) 2 + ( ⁇ a * 2 ) 2 + ( ⁇ b * 2 ) 2 ) 1/2 (1)
  • ⁇ L * 2 , ⁇ a * 2 and ⁇ b * 2 are respectively expressed as follows.
  • L * 2- L * 0 L * 0 represents the lightness of the L * a * b * colorimetric system immediately after the printing process in the printed image of the solid preparation
  • L * 2 represents the visible light of the integrated light quantity of 1.2 million lux in the printed image of the solid preparation
  • L * a * b * represents the lightness of the color system.
  • ⁇ a * 2 a * 2- a * 0 a * 0 represents the value of L * a * b * colorimetric system immediately after the printing process in the printed image of the solid preparation, and a * 2 represents the irradiation of visible light of the integrated light quantity of 1.2 million lux in the printed image of the solid preparation Represents the value of the L * a * b * color system after being processed.
  • ⁇ b * 2 b * 2- b * 0 b * 0 represents the value of the L * a * b * color system immediately after the printing process in the printed image of the solid preparation, and b * 2 represents the visible light of the integrated light quantity of 1.2 million lux in the printed image of the solid preparation L * a * b * represents the value of the later color system.
  • solid preparation is a term including food preparation and pharmaceutical preparation, and as an example of the form of solid preparation, OD tablet (orally disintegrating tablet), plain tablet, FC (film coated) tablet And tablets or capsules such as sugar-coated tablets. Also, the solid preparation may be for pharmaceutical use or food use. Examples of tablets for food use include health foods such as tablets and supplements.
  • a print image consisting of a dried film directly printed by an inkjet recording method is formed on the surface of the solid preparation.
  • the dry film is at least composed of the lake pigment contained in the aqueous ink composition and the fading inhibitor.
  • the printed image consisting of the dried film can be reduced from fading due to light irradiation such as natural light. Therefore, it is possible to prevent deterioration of various information printed to improve identification for the user, such as product information, thereby maintaining good visibility over a long period of time and preventing dispensing errors and accidental drinking. Enable prevention.
  • each material of the aqueous ink composition for ink jet recording conforms to the standard of pharmaceutical additives, Japanese Pharmacopoeia or Food Additives Official Standards stipulated by the Pharmaceutical Affairs Law.
  • Example 1 As shown in Table 1 below, a lake pigment (trade name: Blue No. 2 aluminum lake, manufactured by Daiwa Kasei Co., Ltd.) consisting of 3.34 mass% Blue No. 2 (dye) as a specific lake pigment, and 5 mass as a fading inhibitor % Reduced isomaltulose (trade name: palatinit, manufactured by Mitsui Sugar Co., Ltd.), 1.66% by mass of polyglycerin fatty acid esters as a surface tension regulator (trade name: SY Glyster, manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.), A blue ink jet aqueous ink composition was prepared by mixing 25% by mass of propylene glycol as a wetting agent and 65% by mass of ion exchanged water.
  • a lake pigment (trade name: Blue No. 2 aluminum lake, manufactured by Daiwa Kasei Co., Ltd.) consisting of 3.34 mass% Blue No. 2 (dye) as a specific lake pigment, and 5 mass
  • aqueous ink composition of this example printing was performed on one side of an FC tablet by an inkjet recording method. Printing was performed by a multipass method using an ink jet printer (PX-105, manufactured by Seiko Epson Corporation). Also, printing was performed under the environment of a temperature of 25 ° C. and a relative humidity of 40%. Thereafter, hot air was directly applied by a dryer to sufficiently dry the printing surface.
  • PX-105 ink jet printer
  • Comparative example 1 The aqueous ink composition used as Comparative Example 1 was as shown in Table 1 above.
  • Comparative Example 1 Furthermore, using the aqueous ink composition of Comparative Example 1, printing was performed on an FC tablet by the inkjet recording method in the same manner as in the above-described example. Thus, a sample of Comparative Example 1 was produced.
  • Example 1 The fading resistance of the aqueous ink composition in the samples of Example 1 and Comparative Example 1 was evaluated by performing the following test. That is, for the FC tablet (sample) after ink jet printing with the aqueous ink composition according to Example 1 and Comparative Example 1, L * color difference meter (model number: VSS7700, manufactured by Nippon Denshoku Kogyo Co., Ltd.) is used . L * 0 , a * 0 , and b * 0 in the a * b * color system were measured, respectively. These correspond to the values of L * , a * and b * at an integrated light quantity of 0 lux in Table 2 below showing the measurement results.
  • L * color difference meter model number: VSS7700, manufactured by Nippon Denshoku Kogyo Co., Ltd.
  • Example 2 As shown in Table 3, a lake pigment comprising 8% by weight of yellow No. 4 (dye) as a specific lake pigment (trade name: yellow No. 4 aluminum lake, manufactured by Daiwa Kasei Co., Ltd.), 1% by weight of poly as a pigment dispersant Sodium acrylate (trade name: TEGO (registered trademark) Dispers 715W, manufactured by Evonik, mass average molecular weight 3000), 1% by mass of disodium malate as a dispersion stabilizer (manufactured by Wako Pure Chemical Industries, Ltd.), and dispersion medium 50% by mass of ion-exchanged water was mixed in a container, and the mixed solution was dispersed by a dispersing machine (paint shaker, manufactured by Asada Iron Works Co., Ltd.) to prepare a dispersion of a specific lake pigment.
  • a dispersing machine paint shaker, manufactured by Asada Iron Works Co., Ltd.
  • Example 3 As shown in Table 3, the fading inhibitor was changed to galactose (manufactured by Wako Pure Chemical Industries, Ltd.), and the other conditions were the same as in Example 2.
  • Example 4 As shown in Table 3, the discoloration inhibitor was changed to maltose (manufactured by Wako Pure Chemical Industries, Ltd.), and the other conditions were the same as in Example 2.
  • Example 1 and Comparative Example 1 As in the case of Example 1 and Comparative Example 1 described above, one side of the uncoated tablet is printed by the ink jet recording method using each aqueous ink composition, and then the printed side is sufficiently dried. The Then, the fading resistance of the aqueous ink composition was evaluated by performing the same test as in Example 1 and Comparative Example 1. Table 4 below shows the measurement results corresponding to the measured values of L * , a * , b * at an integrated light quantity of 1.2 million lux.
  • Example 5 As shown in Table 5, the specific lake pigment was changed to a lake pigment (trade name: Red No. 102 aluminum lake, manufactured by Daiwa Kasei Co., Ltd.) consisting of Red No. 102, to obtain a red ink jet ink.
  • the other conditions were the same as in Example 2.
  • Example 6 As shown in Table 5, the fading inhibitor was changed to galactose (manufactured by Wako Pure Chemical Industries, Ltd.), and the other conditions were the same as in Example 5.
  • Example 7 As shown in Table 5, the discoloration inhibitor was changed to maltose (manufactured by Wako Pure Chemical Industries, Ltd.), and the other conditions were the same as in Example 5.
  • Example 1 and Comparative Example 1 As in the case of Example 1 and Comparative Example 1 described above, one side of the uncoated tablet is printed by the ink jet recording method using each aqueous ink composition, and then the printed side is sufficiently dried. The Then, the fading resistance of the aqueous ink composition was evaluated by performing the same test as in Example 1 and Comparative Example 1. Table 6 below shows the measurement results corresponding to the measured values of L * , a * , b * at an integrated light quantity of 1.2 million lux.
  • the content of the discoloration inhibitor is 5% by mass in the above-mentioned example sample, it has been confirmed that the content of up to 50% by mass can be dissolved without causing precipitation. Therefore, if it is 50 mass% or less, the fading suppression effect equivalent to or more than the said Example is realizable. If the lower limit of the content is 0.5% by mass or more, the same fading suppression effect can be confirmed. If the content of the discoloration inhibitor is 1% by mass to 15% by mass (more preferably 5% by mass to 10% by mass), the occurrence of a defect such as nozzle clogging can be suppressed.

Abstract

La présente invention concerne : une composition d'encre aqueuse pour jet d'encre permettant de supprimer l'altération et la décoloration d'images imprimées sur les surfaces de préparations solides telles que des produits pharmaceutiques et des aliments ; un procédé permettant de supprimer l'altération d'images imprimées sur des préparations solides ; et une préparation solide. La composition d'encre aqueuse pour jet d'encre contient un pigment laqué comestible et un inhibiteur de décoloration. Le pigment laqué comprend un pigment laqué spécifique comprenant un colorant contenant au moins un élément choisi dans le groupe constitué par le rouge n° 2, le rouge n° 3, le rouge n° 40, le rouge n° 102, le jaune n° 4, le jaune n°5, le bleu n°1 et le bleu n° 2. L'inhibiteur de décoloration contient au moins un élément choisi dans le groupe constitué par un monosaccharide, un disaccharide, une dextrine et un alcool de sucre. La teneur en inhibiteur de décoloration est inférieure ou égale à 50 % en masse par rapport à la masse totale de la composition d'encre aqueuse.
PCT/JP2018/035107 2017-09-26 2018-09-21 Composition d'encre aqueuse pour jet d'encre, procédé pour supprimer l'altération d'images imprimées sur des préparations solides, et préparation solide WO2019065512A1 (fr)

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KR1020207004290A KR102290817B1 (ko) 2017-09-26 2018-09-21 잉크젯용 수성 잉크 조성물, 고체 제제의 인쇄 화상의 퇴색 억제 방법 및 고체 제제
CN201880055466.8A CN111094475B (zh) 2017-09-26 2018-09-21 喷墨用水性油墨组合物、固体制剂的印刷图像的褪色抑制方法和固体制剂

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JP2018172657A JP7190297B2 (ja) 2017-09-26 2018-09-14 インクジェット用水性インク組成物、固体製剤の印刷画像の褪色抑制方法及び固体製剤

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Cited By (3)

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US20210259274A1 (en) * 2018-06-28 2021-08-26 Wm. Wrigley Jr. Company Titanium free opacifying compositions
EP4050076A4 (fr) * 2019-10-21 2023-01-25 Toppan Inc. Composition pigmentaire, comprimé et capsule
EP4209556A4 (fr) * 2020-09-04 2024-02-28 Toppan Inc Encre pour jet d'encre et tablette

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
JP2021183685A (ja) * 2020-05-22 2021-12-02 花王株式会社 インクセット

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JPS5212037A (en) * 1975-07-16 1977-01-29 Pentel Kk Fluorescent ink composition
JPS57179263A (en) * 1981-04-27 1982-11-04 Toyo Ink Mfg Co Ltd Edible ink
JPH01146974A (ja) * 1987-12-03 1989-06-08 Canon Inc インクジェット用淡色マゼンタインク及びカラーインクジェット記録方法
JPH08325495A (ja) * 1995-04-18 1996-12-10 Domino Printing Sci Plc 印刷インキ
JP2001115070A (ja) * 1999-10-19 2001-04-24 Mitsubishi Chemicals Corp 記録液、インクジェット用記録液及びインクジェット記録方法
WO2005108503A1 (fr) * 2004-05-07 2005-11-17 San-Ei Gen F.F.I., Inc. Méthode pour empêcher l'affadissement d'un colorant goudron et composition contenant le colorant goudron empêchant l'affadissement
JP2012111824A (ja) * 2010-11-24 2012-06-14 Union Chemicar Co Ltd 口腔内崩壊性錠剤用インクジェットインク組成物

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JPS5212037A (en) * 1975-07-16 1977-01-29 Pentel Kk Fluorescent ink composition
JPS57179263A (en) * 1981-04-27 1982-11-04 Toyo Ink Mfg Co Ltd Edible ink
JPH01146974A (ja) * 1987-12-03 1989-06-08 Canon Inc インクジェット用淡色マゼンタインク及びカラーインクジェット記録方法
JPH08325495A (ja) * 1995-04-18 1996-12-10 Domino Printing Sci Plc 印刷インキ
JP2001115070A (ja) * 1999-10-19 2001-04-24 Mitsubishi Chemicals Corp 記録液、インクジェット用記録液及びインクジェット記録方法
WO2005108503A1 (fr) * 2004-05-07 2005-11-17 San-Ei Gen F.F.I., Inc. Méthode pour empêcher l'affadissement d'un colorant goudron et composition contenant le colorant goudron empêchant l'affadissement
JP2012111824A (ja) * 2010-11-24 2012-06-14 Union Chemicar Co Ltd 口腔内崩壊性錠剤用インクジェットインク組成物

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210259274A1 (en) * 2018-06-28 2021-08-26 Wm. Wrigley Jr. Company Titanium free opacifying compositions
EP4050076A4 (fr) * 2019-10-21 2023-01-25 Toppan Inc. Composition pigmentaire, comprimé et capsule
EP4209556A4 (fr) * 2020-09-04 2024-02-28 Toppan Inc Encre pour jet d'encre et tablette

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