JP6794777B2 - Ink, ink container, and inkjet recording method - Google Patents

Description

The present invention relates to ink, an ink container, and an inkjet recording method.

When an image is formed on a low-permeability recording medium using the ink used in the inkjet recording method, the low-permeability recording medium has very low ink permeability, so that the ink that has landed on the surface of the low-permeability recording medium remains. If the durability of the ink is not sufficient, the scratch resistance of the image becomes a problem.

As a method for improving the abrasion resistance, as a method for improving the permeability of the ink and preventing the peeling of the image by allowing an ink component such as a coloring material to enter the recording medium, for example, a low surface tension in the ink. A method of adding the organic solvent of the above has been proposed (see, for example, Patent Document 1).
Further, there is a method of adding a resin component acting as a fixing aid to the ink, and acrylic resin, urethane resin, polyester resin and the like are used as the resin component (see, for example, Patent Documents 2 and 3). ).
Further, a method has been proposed in which an image is formed on the surface of a recording medium with a pigment ink, and then a transparent post-treatment liquid having a film-forming ability is discharged to cover the image portion to protect the image surface (for example,). See Patent Document 4).

An object of the present invention is to provide an ink capable of obtaining an image having excellent abrasion resistance and beading resistance even on a low-permeability recording medium.

The ink of the present invention as a means for solving the above-mentioned problems is an ink containing a surfactant, an organic solvent, and a resin.
The surfactant contains a silicone surfactant and a fluorine surfactant, and contains
The organic solvent contains a glycol ether compound.

According to the present invention, it is possible to provide an ink capable of obtaining an image having excellent abrasion resistance and beading resistance even for a low-permeability recording medium.

FIG. 1 is a perspective explanatory view showing an example of an inkjet recording device. FIG. 2 is a perspective explanatory view showing an example of a main tank in an inkjet recording device.

(ink)
The ink of the present invention is an ink containing a surfactant, an organic solvent, and a resin.
The surfactant contains a silicone surfactant and a fluorine surfactant, and contains
The organic solvent contains a glycol ether compound, and if necessary, other components.

The ink of the present invention is based on the finding that sufficient scratch resistance to a low-permeability recording medium cannot be expected by the conventional method of adding an organic solvent having a low surface tension to increase the permeability of the ink.
Further, in the conventional method of adding a resin component to an ink, the tackiness of the ink film on the low-permeability recording medium after drying is poor and the scratch resistance is poor depending on the type, composition, physical properties, etc. of the resin component. It may get worse. Further, the ink whose elasticity of the ink droplets changes in the drying and permeation process is slow from landing on the low-permeability recording medium until the ink droplets gel, and the ink droplets after landing coalesce with each other. There is a risk of causing a solid mottled pattern called ding. In addition, it is based on the finding that there is a concern that the storage stability may be deteriorated due to the addition of solid content to the ink and aggregation.
Further, the conventional method of discharging the post-treatment liquid and covering the image portion is based on the knowledge that a dedicated mechanism is required to discharge the post-treatment liquid.

The ink of the present invention contains a silicone surfactant and a fluorine surfactant as the surfactant, but each surfactant exhibits a different function. The silicone surfactant has a higher surface tension than the fluorine surfactant and tends to remain in the ink film on the low-permeability recording medium. The presence of the oily silicone surfactant in the ink film acts as a lubricant to reduce the tack of the ink film on the low-permeability recording medium, resulting in improved scratch resistance.
Further, in the ink of the present invention, the inclusion of the fluorine surfactant greatly reduces the surface tension of the ink and improves the permeability of the ink, so that the ink droplets coalesce on the low-permeability recording medium. It is less likely to occur and beading can be suppressed. Since the fluorine surfactant has a highly hydrophobic perfluoroalkyl chain in its structure, it adsorbs well to hydrophobic components such as coloring materials and resins in the ink, and has an effect of improving the storage stability of the ink. give.
Further, the ink of the present invention contains a glycol ether compound as the organic solvent. In order to exhibit excellent plasticizing power with respect to the resin, the glycol ether compound promotes gelation of the resin in the process of drying and penetrating the ink droplets landing on the low-permeability recording medium, and the ink is early. By solidifying the drops, it leads to further improvement of beading resistance.

Therefore, the ink of the present invention contains a surfactant, an organic solvent, and a resin, contains a silicone surfactant and a fluorine surfactant as the surfactant, contains a glycol ether compound as the organic solvent, and contains water and water. It preferably contains a coloring material, and further contains other components as needed.

<Surfactant>
As the surfactant, a silicone surfactant and a fluorine surfactant are contained.

-Silicone surfactant-
The silicone surfactant is not particularly limited and may be appropriately selected depending on the intended purpose. For example, side chain modified polydimethylsiloxane, both end modified polydimethylsiloxane, one end modified polydimethylsiloxane, both side chain Examples thereof include terminally modified polydimethylsiloxane. Among these, a polyether-modified silicone surfactant having a polyoxyethylene group and a polyoxyethylene polyoxypropylene group as modifying groups is particularly preferable because it exhibits good properties as an aqueous surfactant.
As such a surfactant, an appropriately synthesized one may be used, or a commercially available product may be used. As the commercially available product, for example, it can be obtained from Big Chemie Co., Ltd., Shin-Etsu Chemical Co., Ltd., Toray Dow Corning Silicone Co., Ltd., Nippon Emulsion Co., Ltd., Kyoeisha Chemical Co., Ltd. and the like.
The polyether-modified silicone surfactant is not particularly limited and may be appropriately selected depending on the intended purpose. For example, a polyalkylene oxide structure represented by the following general formula (S-1) is dimethylpolysiloxane. The one introduced into the side chain of the Si part of the above can be mentioned.

However, in the general formula (S-1), m, n, a, and b represent integers. R and R'represent an alkyl group and an alkylene group.

As the polyether-modified silicone surfactant, a commercially available product can be used.
Examples of the commercially available products include KF-351A, KF-352, KF-353A, KF-355A, KF-615A, KF-618, KF-642, KF-643 (manufactured by Shin-Etsu Chemical Industry Co., Ltd.), EMALEX- SS-5602, SS-1906EX (manufactured by Nippon Emulsion Co., Ltd.), SH8400, L-77, L-7002, L-7604, L-7602, FZ-2104, FZ-2105, FZ-2118, FZ-2123, FZ -2154, FZ-2161, FZ-2162, FZ-2163, FZ-2164 (manufactured by Toray Dow Corning Silicone Co., Ltd.), BYK-33, BYK-387 (manufactured by Big Chemie Co., Ltd.), TSF4440, TSF4452, TSF4453 ( (Manufactured by Toshiba Silicone Co., Ltd.) and the like.
Among these, from the viewpoint of abrasion resistance, KF-351A, KF-352, KF-353A, KF-355A, KF-615A (manufactured by Shin-Etsu Chemical Co., Ltd.), SH8400, L-77, L-7002, L -7602, L-7604, FZ-2104, FZ-2118, FZ-2123, FZ-2164 (manufactured by Toray Dow Corning Silicone Co., Ltd.), TSF4452, TSF4453 (manufactured by Toshiba Silicone Co., Ltd.) are particularly preferable.

The HLB of the silicone surfactant is preferably 6 or more and 14 or less, and more preferably 8 or more and 12 or less. By setting the HLB of the silicone surfactant to 6 or more and 14 or less, the tack of the ink film on the low-permeability recording medium is reduced, which leads to improvement of abrasion resistance.
Here, the HLB of the silicone surfactant can be determined by, for example, the Griffin method using the formula shown below.
HLB = 20 × (formula amount of hydrophilic part of silicone surfactant / molecular weight of silicone surfactant)

The content of the silicone surfactant is preferably 0.5% by mass or more and 2.0% by mass or less, and more preferably 1.0% by mass or more and 2.0% by mass or less. By setting the content of the silicone surfactant to 0.5% by mass or more, the tack of the ink film on the low-permeability recording medium is sufficiently reduced by the silicone surfactant, which leads to improvement of abrasion resistance. .. Further, by setting the content of the silicone surfactant to 2.0% by mass or less, deterioration of the storage stability and beading resistance of the ink can be suppressed.

-Fluorine surfactant-
As the fluorine surfactant, a compound having 2 to 16 carbon atoms substituted with fluorine is preferable, and a compound having 4 to 16 carbon atoms substituted with fluorine is more preferable.
Examples of the fluorine surfactant include a perfluoroalkyl phosphate compound, a polyoxyalkylene ether polymer compound having a perfluoroalkyl ether group as a perfluoroalkyl ethylene oxide adduct in the side chain, and the like.
Among these, the polyoxyalkylene ether polymer compound having a perfluoroalkyl ether group in the side chain is preferable because it has low foaming property, and the fluorine interface represented by the following general formula (F-1) and general formula (F-2). Activators are more preferred.
In the compound represented by the general formula (F-1), m is preferably an integer of 0 to 10, and n is preferably an integer of 0 to 40 from the viewpoint of imparting water solubility.

[General formula (F-2)]
C _n F _{2n + 1} −CH ₂ CH (OH) CH ₂ −O− (CH ₂ CH ₂ O) _a− Y
In the compound represented by the general formula (F-2), Y is H, or C _n F _{2n + 1} , n is an integer of 1 to 6, or CH ₂ CH (OH) CH _2- C _n F _{2n + 1,} where n is An integer of 4 to 6, or C _p H _{2p + 1,} where p is an integer of 1 to 19. a is an integer of 4 to 14.

Commercially available products can be used as the fluorine surfactant. Examples of the commercially available products include Surflon S-111, S-112, S-113, S-121, S-131, S-132, S-141, and S-145 (all manufactured by Asahi Glass Co., Ltd.). Surflon S-242 (manufactured by AGC Seimi Chemical Co., Ltd.); Fullrad FC-93, FC-95, FC-98, FC-129, FC-135, FC-170C, FC-430, FC-431 (all Sumitomo) 3M Co., Ltd.); Megafuck F-444, F-470, F-1405, F-474 (all manufactured by DIC Co., Ltd.); Zonyl TBS, FSP, FSA, FSN-100, FSN, FSO -100, FSO, FS-30, FS-300, FS-3100, UR (all manufactured by DuPont); FT-110, FT-250, FT-251, FT-400S, FT-150, FT-400SW (All manufactured by Neos Co., Ltd.), Polyfox PF-136A, PF-156A, PF-151N, PF-154, PF-159 (manufactured by Omniova), Unidyne DSN-403N (manufactured by Daikin Industries, Ltd.), etc. Can be mentioned.
The fluorine surfactant is added for the purpose of lowering the surface tension of the ink in order to improve the permeability. Therefore, it is preferable that the surface tension of the ink is significantly reduced even when the ink is added at a low concentration. Among the fluorine surfactants, Megafuck F-444 (manufactured by DIC Corporation), Zonyl FSO, FS-3100 (manufactured by DuPont), Unidyne DSN-403N (manufactured by Daikin Industries, Ltd.), Surflon S -242 (manufactured by AGC Seimi Chemical Co., Ltd.) is particularly preferable.

The HLB of the fluorine surfactant is preferably 6 or more and 14 or less, and more preferably 6 or more and 11 or less. By setting the HLB of the fluorine surfactant to 6 or more, the water solubility of the fluorine surfactant can be maintained. Further, by setting the HLB of the fluorine surfactant to 14 or less, the permeability of the ink can be enhanced, which leads to the improvement of beading resistance. Further, by setting the HLB of the fluorine surfactant to 11 or less, the permeability of the ink can be further improved, and a greater effect on the beading resistance can be exhibited.
Here, the HLB of the fluorine surfactant can be obtained, for example, by the Griffin method using the formula shown below.
HLB = 20 × (formula amount of hydrophilic part of fluorine surfactant / molecular weight of fluorine surfactant)

The content of the fluorine surfactant is preferably 1.0% by mass or more and 2.0% by mass or less, and more preferably 1.5% by mass or more and 2.0% by mass or less. By setting the content of the fluorine surfactant to 1.0% by mass or more, the effects of improving the permeability of the ink and stabilizing the dispersion of solid components can be exhibited, and the beading resistance and the storage stability of the ink can be exhibited. It leads to the improvement of. Further, when the content of the fluorine surfactant is 2.0% by mass or less, deterioration of the storage stability and beading resistance of the ink can be prevented.

The mass ratio (A / B) of the content A of the silicone surfactant and the content B of the fluorine surfactant is preferably 0.3 or more and 2.5 or less, and 0.5 or more and 2.0 or less. More preferred. By setting the mass ratio (A / B) to 0.3 or more and 2.5 or less, it is possible to provide an ink having a good balance of scratch resistance, beading resistance, and ink storage stability.

In addition to the silicone surfactant and the fluorine surfactant, the surfactant may contain other surfactants, if necessary.
Examples of the other surfactant include an amphoteric surfactant, a nonionic surfactant, an anionic surfactant and the like.

<Organic solvent>
As the organic solvent, a glycol ether compound is used from the viewpoint of having an excellent plasticizing power to the resin and suppressing beading.
Examples of the glycol ether compound include ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, tetraethylene glycol monomethyl ether, and propylene glycol monoethyl ether. These may be used alone or in combination of two or more. Among these, diethylene glycol monomethyl ether is preferable.

The organic solvent preferably contains, if necessary, another organic solvent in addition to the glycol ether compound.
As the other organic solvent, a water-soluble organic solvent can be used. Examples of the water-soluble organic solvent include polyhydric alcohols, nitrogen-containing heterocyclic compounds, amides, amines, and sulfur-containing compounds.
Specific examples of the water-soluble organic solvent include ethylene glycol, diethylene glycol, 1,2-propanediol (propylene glycol), 1,3-propanediol, 1,2-butanediol, and 1,3-butanediol. 1,4-Butanediol, 2,3-Butanediol, 3-Methyl-1,3-Butanediol, Triethylene glycol, Polyethylene glycol, Polypropylene glycol, 1,2-Pentanediol, 1,3-Pentanediol, 1, , 4-pentanediol, 2,4-pentanediol, 1,5-pentanediol, 1,2-hexanediol, 1,6-hexanediol, 1,3-hexanediol, 2,5-hexanediol, 1, 5-hexanediol, glycerin, 1,2,6-hexanetriol, 2-ethyl-1,3-hexanediol, ethyl-1,2,4-butanetriol, 1,2,3-butanetriol, 2,2 , 4-trimethyl-1,3-pentanediol, polyhydric alcohols such as petriol, 2-pyrrolidone, N-methyl-2-pyrrolidone, N-hydroxyethyl-2-pyrrolidone, 1,3-dimethyl-2- Nitrogen-containing heterocyclic compounds such as imidazolidinone, ε-caprolactam, γ-butyrolactone, formamide, N-methylformamide, N, N-dimethylformamide, 3-methoxy-N, N-dimethylpropionamide, 3-butoxy-N , N-dimethylpropionamide and other amides, monoethanolamine, diethanolamine, triethylamine and other amines, dimethylsulfoxide, sulfolane, thiodiethanol and other sulfur-containing compounds, propylene carbonate, ethylene carbonate and the like.
From the viewpoint of showing good drying property and improving the film formation completion speed of the ink, it is preferable to use an organic solvent having a boiling point of 250 ° C. or lower, but even when an organic solvent having a boiling point of 250 ° C. or higher is used. By setting the content to 3% by mass or less, it is possible to reduce the deterioration of the film formation completion speed of the ink.

A polyol compound having 8 or more carbon atoms is also preferably used.
Examples of the polyol compound having 8 or more carbon atoms include 2-ethyl-1,3-hexanediol and 2,2,4-trimethyl-1,3-pentanediol.

The content of the organic solvent in the ink is not particularly limited and may be appropriately selected depending on the intended purpose, but is preferably 10% by mass or more and 60% by mass or less from the viewpoint of ink drying property and ejection reliability. More preferably, it is 20% by mass or more and 60% by mass or less.

<Water>
The water content in the ink is not particularly limited and may be appropriately selected depending on the intended purpose, but from the viewpoint of ink drying property and ejection reliability, it is preferably 10% by mass or more and 90% by mass or less, and 20% by mass. % To 60% by mass is more preferable.

<Resin>
The type of resin contained in the ink is not particularly limited and may be appropriately selected depending on the intended purpose. For example, urethane resin, polyester resin, acrylic resin, vinyl acetate resin, styrene resin, butadiene resin, etc. Examples thereof include resins, styrene-butadiene resins, vinyl chloride resins, acrylic styrene resins, and acrylic silicone resins.
Resin particles made of these resins may be used. It is possible to obtain ink by mixing resin particles with a material such as a coloring material or an organic solvent in the state of a resin emulsion in which water is dispersed as a dispersion medium. As the resin particles, those synthesized as appropriate may be used, or commercially available products may be used. In addition, these may be used alone or in combination of two or more kinds of resin particles.

The volume average particle diameter of the resin particles is not particularly limited and may be appropriately selected depending on the intended purpose. However, from the viewpoint of obtaining good fixability and high image hardness, 10 nm or more and 1,000 nm or less are preferable. More than 200 nm is more preferable, and 10 nm or more and 100 nm or less is particularly preferable.
The volume average particle size can be measured using, for example, a particle size analyzer (Nanotrack Wave-UT151, manufactured by Microtrack Bell Co., Ltd.).

The content of the resin is not particularly limited and may be appropriately selected depending on the intended purpose. However, from the viewpoint of fixability and storage stability of the ink, 1% by mass or more and 30% by mass or less with respect to the total amount of the ink. Is preferable, and 5% by mass or more and 20% by mass or less is more preferable.

<Color material>
The coloring material is not particularly limited, and pigments and dyes can be used.
As the pigment, an inorganic pigment or an organic pigment can be used. These may be used alone or in combination of two or more. Moreover, you may use a mixed crystal.
As the pigment, for example, black pigment, yellow pigment, magenta pigment, cyan pigment, white pigment, green pigment, orange pigment, glossy color pigment such as gold or silver, metallic pigment and the like can be used.
Inorganic pigments include titanium oxide, iron oxide, calcium carbonate, barium sulfate, aluminum hydroxide, barium yellow, cadmium red, and chrome yellow, as well as carbon black produced by known methods such as the contact method, furnace method, and thermal method. Can be used.
Examples of organic pigments include azo pigments and polycyclic pigments (for example, phthalocyanine pigments, perylene pigments, perinone pigments, anthraquinone pigments, quinacridone pigments, dioxazine pigments, indigo pigments, thioindigo pigments, isoindolinone pigments, quinophthalone pigments, etc.). , Dye chelate (for example, basic dye type chelate, acidic dye type chelate, etc.), nitro pigment, nitroso pigment, aniline black and the like can be used. Among these pigments, those having a good affinity with a solvent are preferably used. In addition, resin hollow particles and inorganic hollow particles can also be used.
As a specific example of the pigment, for black, carbon black (CI pigment black 7) such as furnace black, lamp black, acetylene black, channel black, or copper, iron (CI pigment black 11) , Metals such as titanium oxide, and organic pigments such as aniline black (CI pigment black 1).
Further, for color, C.I. I. Pigment Yellow 1,3,12,13,14,17,24,34,35,37,42 (yellow iron oxide), 53,55,74,81,83,95,97,98,100,101,104 , 108, 109, 110, 117, 120, 138, 150, 153, 155, 180, 185, 213, C.I. I. Pigment Orange 5, 13, 16, 17, 36, 43, 51, C.I. I. Pigment Red 1, 2, 3, 5, 17, 22, 23, 31, 38, 48: 2 (Permanent Red 2B (Ca)), 48: 3, 48: 4, 49: 1, 52: 2, 53: 1, 57: 1 (Brilliant Carmine 6B), 60: 1, 63: 1, 63: 2, 64: 1, 81, 83, 88, 101 (Bengara), 104, 105, 106, 108 (Cadmium Red), 112, 114, 122 (quinacridone magenta), 123, 146, 149, 166, 168, 170, 172, 177, 178, 179, 184, 185, 190, 193, 202, 207, 208, 209, 213, 219, 224, 254, 264, C.I. I. Pigment Violet 1 (Rhodamine Lake), 3, 5: 1, 16, 19, 23, 38, C.I. I. Pigment Blue 1, 2, 15 (phthalocyanine blue), 15: 1, 15: 2, 15: 3, 15: 4 (phthalocyanine blue), 16, 17: 1, 56, 60, 63, C.I. I. Pigment Greens 1, 4, 7, 8, 10, 17, 18, 36, etc.
The dye is not particularly limited, and acid dyes, direct dyes, reactive dyes, and basic dyes can be used, and one type may be used alone or two or more types may be used in combination.
As the dye, for example, C.I. I. Acid Yellow 17, 23, 42, 44, 79, 142, C.I. I. Acid Red 52,80,82,249,254,289, C.I. I. Acid Blue 9,45,249, C.I. I. Acid Black 1,2,24,94, C.I. I. Hood Black 1, 2, C.I. I. Direct Yellow 1,12,24,33,50,55,58,86,132,142,144,173, C.I. I. Direct Red 1,4,9,80,81,225,227, C.I. I. Direct Blue 1,2,15,71,86,87,98,165,199,202, C.I. I. Dilekdo Black 19, 38, 51, 71, 154, 168, 171, 195, C.I. I. Reactive Red 14, 32, 55, 79, 249, C.I. I. Reactive Black 3, 4, 35 can be mentioned.

As the coloring material, it can also be added as a polymer emulsion containing a water-insoluble or sparingly water-soluble coloring material.
The polymer emulsion containing the coloring material means at least one in which the coloring material is encapsulated in the polymer fine particles and the one in which the coloring material is adsorbed on the surface of the polymer fine particles.
For example, those described in Japanese Patent Application Laid-Open No. 2001-139894 can be mentioned.
In this case, it is not necessary that all the pigments are enclosed or adsorbed in the polymer fine particles, and the pigments may be dispersed in the emulsion as long as the effects of the present invention are not impaired.
The "water-insoluble or sparingly water-soluble" means that the coloring material does not dissolve more than 10 parts by mass with respect to 100 parts by mass of water at 20 ° C.
The above-mentioned "dissolve" means that no separation or sedimentation of the coloring material is visually observed on the surface layer or the lower layer of the aqueous solution.
As the coloring material, the pigment or the dye can be used.
The polymer that forms the polymer emulsion containing the coloring material is not particularly limited and may be appropriately selected depending on the intended purpose. For example, vinyl-based polymer, polyester-based polymer, polyurethane-based polymer, JP-A-2000-53897. Examples thereof include polymers disclosed in Japanese Patent Application Laid-Open No. 2001-139894.
Among these, vinyl-based polymers and polyester-based polymers are particularly preferable.
The volume average particle size of the polymer fine particles (colored fine particles) containing the coloring material is preferably 0.01 μm or more and 0.16 μm or less in the ink.

The content of the coloring material in the ink is preferably 0.1% by mass or more and 15% by mass or less, more preferably 1% by mass or more and 10% by mass, from the viewpoint of improving image density, good fixability and ejection stability. It is as follows.

In order to disperse the pigment to obtain an ink, a method of introducing a hydrophilic functional group into the pigment to obtain a self-dispersing pigment, a method of coating the surface of the pigment with a resin and dispersing it, and a method of dispersing using a dispersant are used. The method, etc. can be mentioned.
As a method of introducing a hydrophilic functional group into a pigment to obtain a self-dispersing pigment, for example, a method of adding a functional group such as a sulfone group or a carboxyl group to a pigment (for example, carbon) so that the pigment can be dispersed in water. Can be mentioned.
Examples of the method of coating the surface of the pigment with a resin and dispersing the pigment include a method of encapsulating the pigment in microcapsules so that the pigment can be dispersed in water. This can be rephrased as a resin coating pigment. In this case, it is not necessary that all the pigments to be blended in the ink are coated with the resin, and the uncoated pigments and the partially coated pigments are dispersed in the ink as long as the effects of the present invention are not impaired. You may be.
Examples of the method of dispersing using a dispersant include a method of dispersing using a known low-molecular-weight dispersant and high-molecular-weight dispersant represented by a surfactant.
As the dispersant, for example, an anionic surfactant, a cationic surfactant, an amphoteric surfactant, a nonionic surfactant and the like can be used depending on the pigment.
RT-100 (nonionic surfactant) manufactured by Takemoto Oil & Fat Co., Ltd. and a naphthalene sulfonate Na formalin condensate can also be suitably used as a dispersant.
The dispersant may be used alone or in combination of two or more.

<Pigment dispersion>
It is possible to obtain an ink by mixing a material such as water or an organic solvent with a pigment. It is also possible to produce an ink by mixing a material such as water or an organic solvent with a pigment dispersion obtained by mixing a pigment and other water or a dispersant.
The pigment dispersion is obtained by mixing and dispersing water, a pigment, a pigment dispersant, and other components as necessary, and adjusting the particle size. A disperser may be used for dispersion.
The particle size of the pigment in the pigment dispersion is not particularly limited, but the maximum frequency is 20 nm or more in terms of the maximum number because the dispersion stability of the pigment is good and the image quality such as ejection stability and image density is also high. It is preferably 500 nm or less, more preferably 20 nm or more and 150 nm or less. The particle size of the pigment can be measured using a particle size analyzer (Nanotrack Wave-UT151, manufactured by Microtrac Bell Co., Ltd.).
The content of the pigment in the pigment dispersion is not particularly limited and may be appropriately selected depending on the intended purpose. However, from the viewpoint of obtaining good ejection stability and increasing the image density, 0.1 mass is used. % Or more and 50% by mass or less are preferable, and 0.1% by mass or more and 30% by mass or less are more preferable.
It is preferable that the pigment dispersion is degassed by filtering coarse particles with a filter, a centrifuge, or the like, if necessary.

The particle size of the solid content in the ink is not particularly limited and can be appropriately selected according to the purpose, but from the viewpoint of improving image quality such as ejection stability and image density, the maximum frequency in terms of the maximum number of inks. Is preferably 20 nm or more and 1000 nm or less, and more preferably 20 nm or more and 150 nm or less. The solid content includes resin particles, pigment particles, and the like. The particle size can be measured using a particle size analyzer (Nanotrack Wave-UT151, manufactured by Microtrack Bell Co., Ltd.).

<Other ingredients>
As the other components, an antifoaming agent, an antiseptic antifungal agent, a rust preventive agent, a pH adjusting agent and the like may be added, if necessary.

<Defoamer>
The defoaming agent is not particularly limited, and examples thereof include a silicone-based defoaming agent, a polyether-based defoaming agent, and a fatty acid ester-based defoaming agent. These may be used alone or in combination of two or more. Among these, a silicone-based defoaming agent is preferable because it has an excellent defoaming effect.

<Preservatives and fungicides>
The antiseptic and antifungal agent is not particularly limited, and examples thereof include 1,2-benzisothiazolin-3-one.

<Rust inhibitor>
The rust preventive is not particularly limited, and examples thereof include acidic sulfites and sodium thiosulfate.

<pH adjuster>
The pH adjusting agent is not particularly limited as long as the pH can be adjusted to 7 or more, and examples thereof include amines such as diethanolamine and triethanolamine.

The physical properties of the ink are not particularly limited and may be appropriately selected depending on the intended purpose. For example, the viscosity, surface tension, pH and the like are preferably in the following ranges.
The viscosity of the ink at 25 ° C. is preferably 5 mPa · s or more and 30 mPa · s or less, preferably 5 mPa · s or more and 25 mPa · s or less, from the viewpoint of improving the print density and character quality and obtaining good ejection properties. More preferred. Here, for the viscosity, for example, a rotary viscometer (manufactured by Toki Sangyo Co., Ltd., RE-80L) can be used. As the measurement conditions, it is possible to measure at 25 ° C. with a standard cone rotor (1 ° 34'x R24), a sample liquid volume of 1.2 mL, a rotation speed of 50 rpm, and 3 minutes.
The surface tension of the ink is preferably 35 mN / m or less, more preferably 32 mN / m or less at 25 ° C. from the viewpoint that the ink is preferably leveled on the recording medium and the drying time of the ink is shortened.
The pH of the ink is preferably 7 to 12, more preferably 8 to 11, from the viewpoint of preventing corrosion of the metal member in contact with the liquid.

<Low permeability recording medium>
The low-permeability recording medium comprises a support and a coating layer on at least one surface of the support, and further has other layers, if necessary.
Transfer amount to the low permeability recording medium of the pure water, 2 mL / ^{m 2} or more 35 mL / ^{m 2} or less is preferably a contact time 100ms measured by a dynamic scanning liquid absorption meter at 25 ℃, 2.2mL / ^{m 2} More than 30 mL / m ² or less is more preferable.
If the transfer amount at the contact time of 100 ms is too small, beading may easily occur, and if it is too large, the ink dot diameter after recording may be too small than the desired diameter.
The amount of pure water transferred to the low-permeability recording medium of pure water at a contact time of 400 ms measured by a dynamic scanning liquid absorber at 25 ° C. is preferably 3 mL / m ² or more and 40 mL / m ² or less, preferably 4 mL. / ^{m 2} or more 35 mL / ^{m 2} or less is more preferable.
If the amount of transfer at the contact time of 400 ms is too small, the drying property is insufficient, so that spur marks may easily occur, and if it is too large, the gloss of the image portion after drying tends to be low. There is.
Here, the dynamic scanning absorber (DSA, Paper Technology Cooperative Magazine, Vol. 48, May 1994, pp. 88-92, Shigenori Kukan) has a liquid absorption amount in an extremely short time. It is a device that can accurately measure.
The dynamic scanning liquid absorption meter directly reads the speed of liquid absorption from the movement of the meniscus in the capillary, makes the sample disk-shaped, and scans the liquid absorption head spirally on the sample, and scans the speed according to a preset pattern. The measurement is automated by a method in which the number of points required for one sample is automatically changed.
The liquid supply head to the paper sample is connected to the capillary via a Teflon® tube, and the position of the meniscus in the capillary is automatically read by an optical sensor.
Specifically, the transfer amount of pure water or ink was measured at 25 ° C. using a dynamic scanning liquid absorption meter (K350 series D type, manufactured by Kyowa Seiko Co., Ltd.).
The transfer amount at the contact time of 100 ms and the contact time of 400 ms can be obtained by interpolation from the measured values of the transfer amounts at the contact times in the vicinity of the respective contact times.

-Support-
The support is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include paper mainly composed of wood fibers and sheet-like substances such as non-woven fabric mainly composed of wood fibers and synthetic fibers. ..
The paper is not particularly limited and may be appropriately selected from known ones according to the purpose. For example, wood pulp, used paper pulp and the like are used.
Examples of the wood pulp include hardwood bleached kraft pulp (LBKP), softwood bleached kraft pulp (NBKP), NBSP, LBSP, GP, TMP and the like.
The raw materials for the used paper pulp are fine white, ruled white, cream white, card, special white, medium white, imitation, fair white, Kent, and white, which are shown in the used paper standard quality standard table of the Waste Paper Recycling Promotion Center. Examples include art, special quality, special quality, newspapers, and magazines.
Specifically, information-related paper such as non-coated computer paper, heat-sensitive paper, pressure-sensitive paper, and other printer paper; OA waste paper such as PPC paper; art paper, coated paper, finely coated paper, matte paper, and the like. Paper; high-quality paper, high-quality color, notebook, letter paper, wrapping paper, fancy paper, medium-quality paper, newspaper paper, stencil paper, super hanging paper, imitation paper, pure white roll paper, uncoated paper such as milk carton, etc. Used paper and paperboard, such as chemical pulp paper and high-yield pulp-containing paper. These may be used alone or in combination of two or more.

The used paper pulp is generally produced from a combination of the following four steps.
(1) For disintegration, waste paper is treated with a pulper with mechanical force and chemicals to loosen it into fibers, and the printing ink is peeled from the fibers.
(2) Dust removal removes foreign matter (plastic, etc.) and dust contained in used paper with a screen, cleaner, or the like.
(3) For deinking, the printing ink peeled off from the fiber using a surfactant is removed from the system by a flotation method or a cleaning method.
(4) Bleaching enhances the whiteness of fibers by using an oxidizing action or a reducing action.
When the used paper pulp is mixed, the mixing ratio of the used paper pulp in the total pulp is preferably 40% or less from the viewpoint of curl countermeasures after recording.

As the internal filler used for the support, for example, a conventionally known pigment as a white pigment is used.
Examples of the white pigment include light calcium carbonate, heavy calcium carbonate, kaolin, clay, talc, calcium sulfate, barium sulfate, titanium dioxide, zinc oxide, zinc sulfide, zinc carbonate, satin white, aluminum silicate, and silica soil. White inorganic pigments such as calcium silicate, magnesium silicate, synthetic silica, aluminum hydroxide, alumina, lithopone, zeolite, magnesium carbonate, magnesium hydroxide, etc .; styrene plastic pigments, acrylic plastic pigments, polyethylene, microcapsules, urea resins , Organic pigments such as melamine resin and the like. These may be used alone or in combination of two or more.

Examples of the internal sizing agent used when making the support include a neutral rosin-based sizing agent used for neutral paper making, alkenyl succinic anhydride (ASA), alkyl ketene dimer (AKD), and petroleum resin. Examples include system sizing agents. These may be used alone or in combination of two or more. Among these, a neutral rosin sizing agent and alkenyl succinic anhydride are preferable.
Since the alkyl ketene dimer has a high size effect, the content can be small, but the friction coefficient on the surface of the recording paper (recording medium) is lowered and slippery, which is preferable from the viewpoint of transportability during inkjet recording. It may not be.

-Coating layer-
The coating layer contains a pigment and a binder (binder), preferably contains a surfactant, and further contains other components if necessary.

As the pigment, an inorganic pigment or a combination of an inorganic pigment and an organic pigment can be used.
Examples of the inorganic pigment include kaolin, talc, heavy calcium carbonate, light calcium carbonate, calcium sulfite, amorphous silica, titanium white, magnesium carbonate, titanium dioxide, aluminum hydroxide, calcium hydroxide, magnesium hydroxide, and the like. Examples include zinc hydroxide and chlorite. These may be used alone or in combination of two or more.
Among these, kaolin is particularly preferable because it has excellent glossiness and can have a texture similar to that of paper for offset printing.
Examples of the kaolin include delaminated kaolin, calcined kaolin, engineered kaolin by surface modification and the like. Among these, in consideration of gloss development, kaolin having a particle size distribution of 80% by mass or more having a particle size of 2 μm or less preferably accounts for 50% by mass or more of the total kaolin.
The content of the kaolin is preferably 50 parts by mass or more with respect to 100 parts by mass of the binder. When the content is 50 parts by mass or more, good glossiness can be obtained. The upper limit of the content is not particularly limited, but in consideration of the fluidity of kaolin, particularly the thickening under a high shearing force, 90 parts by mass or less is more preferable from the viewpoint of coating suitability.

The dry adhesion amount of the cationic organic compound is preferably 0.3 g / m ² or more and 2.0 g / m ² or less.
When the dry adhesion amount of the cationic organic compound is 0.3 g / m ² or more, the image density is improved and the effect of reducing feathering can be obtained.

The surfactant is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include anionic activators, cationic activators, amphoteric activators and nonionic activators. Of these, nonionic surfactants are preferred.
By adding the surfactant, the water resistance of the image is improved, the image density is increased, and the bleeding is improved.
Examples of the non-ionic activator include higher alcohol ethylene oxide adduct, alkylphenol ethylene oxide adduct, fatty acid ethylene oxide adduct, polyhydric alcohol fatty acid ester ethylene oxide adduct, higher aliphatic amine ethylene oxide adduct, and fatty acid amide. Ethylene oxide adduct, ethylene oxide adduct of fats and oils, polypropylene glycol ethylene oxide adduct, fatty acid ester of glycerol, fatty acid ester of pentaerythritol, fatty acid ester of sorbitol and sorbitan, fatty acid ester of sucrose, alkyl ether of polyhydric alcohol, Examples thereof include fatty acid amides of alkanolamines. These may be used alone or in combination of two or more.

The polyhydric alcohol is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include glycerol, trimethylolpropane, pentaerythlit, sorbitol and sucrose. As for the ethylene oxide adduct, it is also effective to replace a part of the ethylene oxide with an alkylene oxide such as propylene oxide or butylene oxide as long as the water solubility can be maintained.
The substitution rate is preferably 50% or less.
The HLB (hydrophilic / lipophilicity ratio) of the nonionic surfactant is preferably 4 to 15, more preferably 7 to 13.
The content of the surfactant is preferably 0 parts by mass or more and 10 parts by mass or less, and more preferably 0.1 parts by mass or more and 1.0 parts by mass or less with respect to 100 parts by mass of the cationic organic compound.
Other components can be added to the coating layer as needed, as long as the object and effect of the present invention are not impaired.
Examples of the other components include additives such as alumina powder, pH adjusters, preservatives, and antioxidants.

The method for forming the coating layer is not particularly limited and may be appropriately selected depending on the intended purpose. For example, the coating layer liquid can be impregnated or applied onto the support.
The impregnation or coating method of the coating layer liquid is not particularly limited and may be appropriately selected depending on the intended purpose. For example, a conventional size press, a gate roll size press, a film transfer size press, a blade coater, and a rod coater. , Air knife coater, curtain coater, etc. can be applied with various coating machines, but from the viewpoint of cost, the conventional size press, gate roll size press, film transfer size press, etc. installed in the paper machine can be used. It may be impregnated or adhered and finished on-machine.
The amount of the coating layer liquid adhered is not particularly limited and can be appropriately selected depending on the intended purpose. The solid content is preferably 0.5 g / m ² or more and 20 g / m ² or less, and 1 g / m ² or more. More preferably, it is 15 g / m ² or less.
After the impregnation or coating, it may be dried if necessary, and the drying temperature in this case is not particularly limited and may be appropriately selected depending on the intended purpose, but is 100 ° C. or higher and 250 ° C. or lower. preferable.

The low-permeability recording medium may further form a back layer on the back surface of the support, between the support and the coating layer, and between the support and the back layer, and may form other layers on the coating layer. A protective layer can also be provided on the surface. Each of these layers may be a single layer or a plurality of layers.

The low-permeability recording medium is not particularly limited as long as the liquid absorption property is in the above numerical range, and a commercially available product can be used. Examples of the commercially available product include OK top coat, OK astro gloss, and OK. Non-wrinkle, SA Kanto +, OK Kanto +, OK Non-wrinkle, (F) MCOP, OK Astro Dal, OK Astro Matte, OK Ultra Aqua Satin, OK Embossed Silk, OK Embossed Pear-skin, OK Embossed Cloth, OK Embossed Homespun, OK Optogloss, OK Bulk King, OK Casablanca, OK Casablanca-V, OK Casablanca-X, OK Kanto One Side, OK Coat L, OK Coat L Green 100, OK Coat N Green 100, OK Coat V, OK Medium Quality coat (for offset), OK top coat S, OK top coat dull, OK top coat mat N, OK Trinity, OK Trinity NVi, OK Trinity NaVi-V, OK neo top coat, OK neo top coat mat, OK non-wrinkle AL, OK Non-Wrinkle DL, OK Non-Wrinkle BL, OK White L, OK Matte Coat L Green 100, OK Matte Coat Green 100, OK Royal Coat, OK White L, Z Coat, Z Coat Green 100, Ultra Satin Kanto N, Golden Matte, Satin Kanto N, New Age, New Age Green 100, Mirror Coat Gold, Mirror Coat Platinum, Royal Coat L, Loston Color, POD Super Gloss, POD Gloss Coat, POD Matte Coat (Oji Paper Co., Ltd.) Made), Broad Mat A, Broad Gloss A, White Pearl Coat N, New V Mat, Pearl Coat, Dignity, Vita Gross, N Pearl Coat L, Utrilo, EP-D Gloss, EP-L Gloss, EP-L Mat, EP-D Premium White, EP-Super High Quality, (above, manufactured by Mitsubishi Paper Co., Ltd.), Hi-a, α Matt, Kinmari Hi-L, Mucoat, Mumat, Mu White (above, Hokuetsu Kishu Paper Co., Ltd.) , Lumi Art Gloss paper (manufactured by Stora Enso) and the like. These may be used alone or in combination of two or more.
Among these, Lumi Art Gloss paper is preferable. Since the Lumi Art Gloss paper has low ink absorbency, it may not be possible to obtain satisfactory image drying properties when using a general inkjet ink, but good drying properties can be obtained by using the ink of the present invention. Can be done.

<Ink container>
The ink containing container of the present invention has an ink containing portion containing the ink of the present invention, and further has other members as needed.

The ink accommodating portion is not particularly limited, and its shape, structure, size, material, and the like can be appropriately selected according to the purpose. For example, an ink bag formed of an aluminum laminate film, a resin film, or the like. Those having at least such as.

<Recorded material>
The recording material of the present invention comprises an image formed by using the ink of the present invention on a recording medium.
It can be recorded by an inkjet recording device and an inkjet recording method to obtain a recorded material.

(Inkjet recording device, inkjet recording method)
The inkjet recording method of the present invention is an inkjet recording method in which ink is ejected from a nozzle of a recording head and applied to a recording medium for recording.
The ink is the ink of the present invention.
The recording medium has a support and a coating layer on at least one surface of the support, and the amount of pure water transferred to the recording medium at a contact time of 100 ms measured by a dynamic scanning liquid absorbent meter. Is preferably ² mL / m ² or more and 35 mL / m ² or less, and the amount of pure water transferred to the recording medium at a contact time of 400 ms is preferably 3 mL / m ² or more and 40 mL / m ² or less.

The inkjet recording device of the present invention has an ink container of the present invention, a recording head for ejecting ink droplets, and further has other members as needed.

<Recording device, recording method>
The ink of the present invention can be suitably used for various recording devices by an inkjet recording method, for example, a printer, a facsimile device, a copying device, a printer / fax / copier multifunction device, a three-dimensional modeling device, and the like.
In the present invention, the recording device and the recording method are devices capable of ejecting ink, various processing liquids, and the like to a recording medium, and a method of recording using the device. The recording medium means a medium to which ink and various treatment liquids can adhere even temporarily.
This recording device can include not only a head portion for ejecting ink, but also means related to feeding, transporting, and discharging paper of a recording medium, and other devices called pretreatment devices and posttreatment devices. ..
The recording device and recording method may include a heating means used in the heating step and a drying means used in the drying step. The heating means and the drying means include, for example, means for heating and drying the print surface and the back surface of the recording medium. The heating means and the drying means are not particularly limited, but for example, a hot air heater and an infrared heater can be used. Heating and drying can be performed before printing, during printing, after printing, and the like.
Further, the recording device and the recording method are not limited to those in which significant images such as characters and figures are visualized by ink. For example, those that form patterns such as geometric patterns and those that form a three-dimensional image are also included.
Further, the recording device includes both a serial type device that moves the discharge head and a line type device that does not move the discharge head, unless otherwise specified.
Further, as this recording device, it is possible to use not only a desktop type but also a wide recording device capable of printing on an A0 size recording medium, or, for example, continuous paper wound in a roll shape as a recording medium. A continuous line printer is also included.
An example of the recording device will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective explanatory view of the device. FIG. 2 is a perspective explanatory view of the main tank. The image forming apparatus 400 as an example of the recording apparatus is a serial type image forming apparatus. A mechanical unit 420 is provided in the exterior 401 of the image forming apparatus 400. Each ink container 411 of the main tank 410 (410k, 410c, 410m, 410y) for each color of black (K), cyan (C), magenta (M), and yellow (Y) is packaged with, for example, an aluminum laminate film. It is formed of members. The ink container 411 is housed in, for example, a plastic container case 414. As a result, the main tank 410 is used as an ink cartridge for each color.
On the other hand, a cartridge holder 404 is provided behind the opening when the cover 401c of the apparatus main body is opened. A main tank 410 is detachably attached to the cartridge holder 404. As a result, each ink ejection port 413 of the main tank 410 and the ejection head 434 for each color communicate with each other via the supply tube 436 for each color, and ink can be ejected from the ejection head 434 to the recording medium.

This recording device can include not only a portion that ejects ink, but also a device called a pretreatment device, a posttreatment device, and the like.
As one aspect of the pretreatment apparatus and the posttreatment apparatus, it has a pretreatment liquid and a posttreatment liquid as in the case of inks such as black (K), cyan (C), magenta (M), and yellow (Y). There is an embodiment in which a liquid accommodating portion and a liquid discharge head are added, and a pretreatment liquid or a posttreatment liquid is discharged by an inkjet recording method.
As another aspect of the pretreatment device and the posttreatment device, there is a mode in which a pretreatment device and a posttreatment device by, for example, a blade coating method, a roll coating method, and a spray coating method are provided other than the inkjet recording method.

The method of using the ink is not limited to the inkjet recording method, and can be widely used. In addition to the inkjet recording method, examples thereof include a blade coating method, a gravure coating method, a bar coating method, a roll coating method, a dip coating method, a curtain coating method, a slide coating method, a die coating method, and a spray coating method.

The use of the ink of the present invention is not particularly limited and may be appropriately selected depending on the intended purpose. For example, it can be applied to printed matter, paints, coating materials, base materials and the like. Further, it can be used not only as an ink to form two-dimensional characters and images, but also as a three-dimensional modeling material for forming a three-dimensional three-dimensional image (three-dimensional model).
A known three-dimensional modeling device can be used for modeling the three-dimensional object, and the device is not particularly limited, but for example, an device provided with ink accommodating means, supply means, ejection means, drying means, and the like is used. be able to. The three-dimensional model includes a three-dimensional model obtained by overcoating with ink. In addition, a molded product obtained by processing a structure in which ink is applied on a base material such as a recording medium is also included. The molded product is, for example, a recorded material or structure formed in a sheet shape or a film shape that has been subjected to molding processing such as heat stretching or punching, and is, for example, an automobile, an OA device, or electricity. -Suitably used for molding after decorating the surface of electronic devices, meters of cameras, panels of operation parts, etc.

In addition, image formation, recording, printing, printing, etc. in the terms of the present invention are all synonymous terms.

Examples of the present invention will be described below, but the present invention is not limited to these examples.

(Manufacturing Example 1)
-Polymer emulsion type cyan pigment-
After sufficiently substituting nitrogen gas in a 1 L flask equipped with a mechanical stirrer, a thermometer, a nitrogen gas introduction tube, a reflux tube, and a dropping funnel, 11.2 g of styrene, 2.8 g of acrylic acid, and 12.0 g of lauryl methacrylate , 4.0 g of polyethylene glycol methacrylate, 4.0 g of styrene macromer (manufactured by Toa Synthetic Co., Ltd., trade name: AS-6), and 0.4 g of mercaptoethanol were mixed and heated to 65 ° C.
Next, styrene 100.8 g, acrylic acid 25.2 g, lauryl methacrylate 108.0 g, polyethylene glycol methacrylate 36.0 g, hydroxyl ethyl methacrylate 60.0 g, styrene macromer (manufactured by Toa Synthetic Co., Ltd., trade name: AS-6). A mixed solution of 36.0 g, mercaptoethanol 3.6 g, azobismethylvaleronitrile 2.4 g, and methyl ethyl ketone 18 g was added dropwise into the flask over 2.5 hours.
After completion of the dropwise addition, a mixed solution of 0.8 g of azobismethylvaleronitrile and 18 g of methyl ethyl ketone was added dropwise to the flask over 0.5 hours.
After aging at 65 ° C. for 1 hour, 0.8 g of azobismethylvaleronitrile was added, and the mixture was further aged for 1 hour.
After completion of the reaction, 364 g of methyl ethyl ketone was added into the flask to prepare 800 g of a polymer solution having a concentration of 50% by mass.
Next, 46 g of the obtained polymer solution, C.I. I. After sufficiently stirring 33 g of Pigment Blue 15: 3 (manufactured by Dainichiseika Kogyo Co., Ltd.), 13.6 g of a 1 mol / L potassium hydroxide aqueous solution, 20 g of methyl ethyl ketone, and 13.6 g of ion-exchanged water, a roll mill was used. Kneaded.
The obtained paste was put into 200 g of pure water, stirred sufficiently, methyl ethyl ketone and water were distilled off using an evaporator, and then glycerin was added to add pigment 10.9% by mass and resin 7.5% by mass. A polymer emulsion type cyan pigment of Production Example 1 containing (solid content concentration 18.4% by mass) and glycerin 9.1% by mass was prepared.

(Manufacturing Example 2)
-Preparation of polyurethane resin emulsion-
In an autoclave reactor equipped with a stirrer and a jacket, 500 g of amorphous polycarbonate diol (Duranol T5651, manufactured by Asahi Kasei Chemicals Co., Ltd.) having a number average molecular weight (Mn) of 500, 45.8 g of dimethylol propionic acid, isophorone diisocyanate (IPDI). 358 g, 29.4 g of triethylamine, and 650 g of acetone were charged while introducing nitrogen. Then, the mixture was heated to 80 ° C. and subjected to a urethanization reaction over 5 hours to produce a prepolymer.
After returning the system to 40 ° C, the temperature was maintained at 40 ° C. After confirming the NCO% present in the system, water was slowly added, and the mixture was heated and stirred for 30 minutes, then an extender (isophorone diamine (IPDA)) was added, and the mixture was heated and stirred for 3 to 6 hours. Finally, by removing the organic solvent, a polyurethane resin emulsion of Production Example 2 having a solid content concentration of 31.0% by mass was obtained.

(Manufacturing Example 3)
-Preparation of acrylic silicone resin emulsion-
After sufficient nitrogen gas substitution in a 300 mL flask equipped with a mechanical stirrer, thermometer, nitrogen gas introduction tube, reflux tube, and dropping funnel, Aqualon HS-10 (reactive emulsifier with unsaturated carbon, first 2.3 g (100% by mass of ingredients) manufactured by Kogyo Seiyaku Co., Ltd. and 70 g of ion-exchanged water were added and mixed, and the temperature was raised to 70 ° C.
After raising the temperature, 0.14 g of ammonium peroxodisulfate as a reaction initiator is added, and after 5 minutes, 26 g of methyl methacrylate, 60 g of 2 ethylhexyl methacrylate, 6.9 g of vinyltriethoxysilane, and Aqualon HS-10 (having unsaturated carbon) are added. Reactive emulsifier, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd., component 100% by mass) 1.4 g, and ion-exchanged water 50 g were mixed and added dropwise over 3 hours.
Then, after heating and aging at 80 ° C. for 2 hours, the mixture was cooled to room temperature (25 ° C.), the pH was adjusted to 7 to 8 with aqueous ammonia, and the acrylic silicone resin emulsion of Production Example 3 having a solid content concentration of 40% by mass. 240 g was prepared.

(Example 1)
-Making ink-
An ink having the following formulation was prepared, the pH was adjusted, and then filtration was performed with a membrane filter having an average pore size of 5 μm to prepare an ink.
<Ink prescription>
-Polymer emulsion type cyan pigment of Production Example 1: 22.91% by mass
-Polyurethane resin emulsion of Production Example 2: 14.80% by mass
-Diethylene glycol monomethyl ether as an organic solvent: 15.0% by mass
-Propylene glycol as an organic solvent: 14.0% by mass
-3-Methoxy-N, N-dimethylpropionamide as an organic solvent: 5.0% by mass
-2-Ethyl-1,3-hexanediol as an organic solvent: 2.0% by mass
-Silicone surfactant (L-7002, manufactured by Toray Dow Corning Co., Ltd.): 1.0% by mass
-Fluorine surfactant (Megafuck F-444, manufactured by DIC Corporation): 1.0% by mass
-Antiseptic and antifungal agent (Proxel LV, manufactured by Avecia): 0.05% by mass
-PH regulator (triethanolamine): 0.3% by mass
・ Pure water: Remaining amount ・ Total: 100% by mass

(Example 2)
-Making ink-
An ink having the following formulation was prepared, the pH was adjusted, and then filtration was performed with a membrane filter having an average pore size of 5 μm to prepare an ink.
<Ink prescription>
-Polymer emulsion type cyan pigment of Production Example 1: 22.91% by mass
-Polyurethane resin emulsion of Production Example 2: 14.80% by mass
-Diethylene glycol monomethyl ether as an organic solvent: 15.0% by mass
-Propylene glycol as an organic solvent: 14.0% by mass
-3-Methoxy-N, N-dimethylpropionamide as an organic solvent: 5.0% by mass
-2-Ethyl-1,3-hexanediol as an organic solvent: 2.0% by mass
-Silicone surfactant (L-7602, manufactured by Toray Dow Corning Co., Ltd.): 1.5% by mass
-Fluorine surfactant (Megafuck F-444, manufactured by DIC Corporation): 1.0% by mass
-Antiseptic and antifungal agent (Proxel LV, manufactured by Avecia): 0.05% by mass
-PH regulator (triethanolamine): 0.3% by mass
・ Pure water: Remaining amount ・ Total: 100% by mass

(Example 3)
-Making ink-
An ink having the following formulation was prepared, the pH was adjusted, and then filtration was performed with a membrane filter having an average pore size of 5 μm to prepare an ink.
<Ink prescription>
-Polymer emulsion type cyan pigment of Production Example 1: 22.91% by mass
-Polyurethane resin emulsion of Production Example 2: 14.80% by mass
-Diethylene glycol monomethyl ether as an organic solvent: 15.0% by mass
-Propylene glycol as an organic solvent: 14.0% by mass
-3-Methoxy-N, N-dimethylpropionamide as an organic solvent: 5.0% by mass
-2-Ethyl-1,3-hexanediol as an organic solvent: 2.0% by mass
-Silicone surfactant (L-7002, manufactured by Toray Dow Corning Co., Ltd.): 0.5% by mass
-Fluorine surfactant (Megafuck F-444, manufactured by DIC Corporation): 1.0% by mass
-Antiseptic and antifungal agent (Proxel LV, manufactured by Avecia): 0.05% by mass
-PH regulator (triethanolamine): 0.3% by mass
・ Pure water: Remaining amount ・ Total: 100% by mass

(Example 4)
-Making ink-
An ink having the following formulation was prepared, the pH was adjusted, and then filtration was performed with a membrane filter having an average pore size of 5 μm to prepare an ink.
<Ink prescription>
-Polymer emulsion type cyan pigment of Production Example 1: 22.91% by mass
-Polyurethane resin emulsion of Production Example 2: 14.80% by mass
-Diethylene glycol monomethyl ether as an organic solvent: 15.0% by mass
-Propylene glycol as an organic solvent: 14.0% by mass
-3-Methoxy-N, N-dimethylpropionamide as an organic solvent: 5.0% by mass
-2-Ethyl-1,3-hexanediol as an organic solvent: 2.0% by mass
-Silicone surfactant (FZ-2104, manufactured by Toray Dow Corning Co., Ltd.): 1.0% by mass
-Fluorine surfactant (Megafuck F-444, manufactured by DIC Corporation): 1.5% by mass
-Antiseptic and antifungal agent (Proxel LV, manufactured by Avecia): 0.05% by mass
-PH regulator (triethanolamine): 0.3% by mass
・ Pure water: Remaining amount ・ Total: 100% by mass

(Example 5)
-Making ink-
An ink having the following formulation was prepared, the pH was adjusted, and then filtration was performed with a membrane filter having an average pore size of 5 μm to prepare an ink.
<Ink prescription>
-Polymer emulsion type cyan pigment of Production Example 1: 22.91% by mass
-Polyurethane resin emulsion of Production Example 2: 14.80% by mass
-Diethylene glycol monomethyl ether as an organic solvent: 15.0% by mass
-Propylene glycol as an organic solvent: 14.0% by mass
-3-Methoxy-N, N-dimethylpropionamide as an organic solvent: 5.0% by mass
-2-Ethyl-1,3-hexanediol as an organic solvent: 2.0% by mass
-Silicone surfactant (FZ-2104, manufactured by Toray Dow Corning Co., Ltd.): 1.0% by mass
-Fluorine surfactant (Unidyne DSN-403N, manufactured by Daikin Industries, Ltd.): 1.0% by mass
-Antiseptic and antifungal agent (Proxel LV, manufactured by Avecia): 0.05% by mass
-PH regulator (triethanolamine): 0.3% by mass
・ Pure water: Remaining amount ・ Total: 100% by mass

(Example 6)
-Making ink-
An ink having the following formulation was prepared, the pH was adjusted, and then filtration was performed with a membrane filter having an average pore size of 5 μm to prepare an ink.
<Ink prescription>
-Polymer emulsion type cyan pigment of Production Example 1: 22.91% by mass
-Acrylic silicone resin emulsion of Production Example 3: 14.80% by mass
-Diethylene glycol monomethyl ether as an organic solvent: 15.0% by mass
-Propylene glycol as an organic solvent: 14.0% by mass
-3-Methoxy-N, N-dimethylpropionamide as an organic solvent: 5.0% by mass
-2-Ethyl-1,3-hexanediol as an organic solvent: 2.0% by mass
-Silicone surfactant (FZ-2104, manufactured by Toray Dow Corning Co., Ltd.): 1.0% by mass
-Fluorine surfactant (Megafuck F-444, manufactured by DIC Corporation): 1.0% by mass
-Antiseptic and antifungal agent (Proxel LV, manufactured by Avecia): 0.05% by mass
-PH regulator (triethanolamine): 0.3% by mass
・ Pure water: Remaining amount ・ Total: 100% by mass

(Example 7)
-Making ink-
An ink having the following formulation was prepared, the pH was adjusted, and then filtration was performed with a membrane filter having an average pore size of 5 μm to prepare an ink.
<Ink prescription>
-Polymer emulsion type cyan pigment of Production Example 1: 22.91% by mass
-Polyurethane resin emulsion of Production Example 2: 14.80% by mass
-Diethylene glycol monomethyl ether as an organic solvent: 15.0% by mass
-Propylene glycol as an organic solvent: 14.0% by mass
-3-Methoxy-N, N-dimethylpropionamide as an organic solvent: 5.0% by mass
-2-Ethyl-1,3-hexanediol as an organic solvent: 2.0% by mass
-Silicone surfactant (FZ-2104, manufactured by Toray Dow Corning Co., Ltd.): 1.0% by mass
-Fluorine surfactant (Surflon S-242, manufactured by AGC Seimi Chemical Co., Ltd.): 1.0% by mass
-Antiseptic and antifungal agent (Proxel LV, manufactured by Avecia): 0.05% by mass
-PH regulator (triethanolamine): 0.3% by mass
・ Pure water: Remaining amount ・ Total: 100% by mass

(Example 8)
-Making ink-
An ink having the following formulation was prepared, the pH was adjusted, and then filtration was performed with a membrane filter having an average pore size of 5 μm to prepare an ink.
<Ink prescription>
-Polymer emulsion type cyan pigment of Production Example 1: 22.91% by mass
-Polyurethane resin emulsion of Production Example 2: 14.80% by mass
-Diethylene glycol monomethyl ether as an organic solvent: 15.0% by mass
-Propylene glycol as an organic solvent: 14.0% by mass
-3-Methoxy-N, N-dimethylpropionamide as an organic solvent: 5.0% by mass
-2-Ethyl-1,3-hexanediol as an organic solvent: 2.0% by mass
-Silicone surfactant (L-7002, manufactured by Toray Dow Corning Co., Ltd.): 1.0% by mass
-Fluorine surfactant (Megafuck F-444, manufactured by DIC Corporation): 0.5% by mass
-Antiseptic and antifungal agent (Proxel LV, manufactured by Avecia): 0.05% by mass
-PH regulator (triethanolamine): 0.3% by mass
・ Pure water: Remaining amount ・ Total: 100% by mass

(Example 9)
-Making ink-
An ink having the following formulation was prepared, the pH was adjusted, and then filtration was performed with a membrane filter having an average pore size of 5 μm to prepare an ink.
<Ink prescription>
-Polymer emulsion type cyan pigment of Production Example 1: 22.91% by mass
-Polyurethane resin emulsion of Production Example 2: 14.80% by mass
-Diethylene glycol monomethyl ether as an organic solvent: 15.0% by mass
-Propylene glycol as an organic solvent: 14.0% by mass
-3-Methoxy-N, N-dimethylpropionamide as an organic solvent: 5.0% by mass
-2-Ethyl-1,3-hexanediol as an organic solvent: 2.0% by mass
-Silicone surfactant (FZ-2104, manufactured by Toray Dow Corning Co., Ltd.): 0.3% by mass
-Fluorine surfactant (Megafuck F-444, manufactured by DIC Corporation): 1.0% by mass
-Antiseptic and antifungal agent (Proxel LV, manufactured by Avecia): 0.05% by mass
-PH regulator (triethanolamine): 0.3% by mass
・ Pure water: Remaining amount ・ Total: 100% by mass

(Example 10)
-Making ink-
An ink having the following formulation was prepared, the pH was adjusted, and then filtration was performed with a membrane filter having an average pore size of 5 μm to prepare an ink.
<Ink prescription>
-Polymer emulsion type cyan pigment of Production Example 1: 22.91% by mass
-Polyurethane resin emulsion of Production Example 2: 14.80% by mass
-Diethylene glycol monomethyl ether as an organic solvent: 15.0% by mass
-Propylene glycol as an organic solvent: 14.0% by mass
-3-Methoxy-N, N-dimethylpropionamide as an organic solvent: 5.0% by mass
-2-Ethyl-1,3-hexanediol as an organic solvent: 2.0% by mass
-Silicone-based surfactant (FZ-2104, manufactured by Toray Dow Corning Co., Ltd.): 2.5% by mass
-Fluorine surfactant (Megafuck F-444, manufactured by DIC Corporation): 1.0% by mass
-Antiseptic and antifungal agent (Proxel LV, manufactured by Avecia): 0.05% by mass
-PH regulator (triethanolamine): 0.3% by mass
・ Pure water: Remaining amount ・ Total: 100% by mass

(Example 11)
-Making ink-
An ink having the following formulation was prepared, the pH was adjusted, and then filtration was performed with a membrane filter having an average pore size of 5 μm to prepare an ink.
<Ink prescription>
-Polymer emulsion type cyan pigment of Production Example 1: 22.91% by mass
-Polyurethane resin emulsion of Production Example 2: 14.80% by mass
-Diethylene glycol monomethyl ether as an organic solvent: 15.0% by mass
-Propylene glycol as an organic solvent: 14.0% by mass
-3-Methoxy-N, N-dimethylpropionamide as an organic solvent: 5.0% by mass
-2-Ethyl-1,3-hexanediol as an organic solvent: 2.0% by mass
-Silicone surfactant (FZ-2104, manufactured by Toray Dow Corning Co., Ltd.): 0.3% by mass
-Fluorine surfactant (Megafuck F-444, manufactured by DIC Corporation): 0.5% by mass
-Antiseptic and antifungal agent (Proxel LV, manufactured by Avecia): 0.05% by mass
-PH regulator (triethanolamine): 0.3% by mass
・ Pure water: Remaining amount ・ Total: 100% by mass

(Comparative Example 1)
-Making ink-
An ink having the following formulation was prepared, the pH was adjusted, and then filtration was performed with a membrane filter having an average pore size of 5 μm to prepare an ink.
<Ink prescription>
-Polymer emulsion type cyan pigment of Production Example 1: 22.91% by mass
-Polyurethane resin emulsion of Production Example 2: 14.80% by mass
-Diethylene glycol monomethyl ether as an organic solvent: 15.0% by mass
-Propylene glycol as an organic solvent: 14.0% by mass
-3-Methoxy-N, N-dimethylpropionamide as an organic solvent: 5.0% by mass
-2-Ethyl-1,3-hexanediol as an organic solvent: 2.0% by mass
-Silicone surfactant (FZ-2104, manufactured by Toray Dow Corning Co., Ltd.): 1.5% by mass
-Antiseptic and antifungal agent (Proxel LV, manufactured by Avecia): 0.05% by mass
-PH regulator (triethanolamine): 0.3% by mass
・ Pure water: Remaining amount ・ Total: 100% by mass

(Comparative Example 2)
-Making ink-
An ink having the following formulation was prepared, the pH was adjusted, and then filtration was performed with a membrane filter having an average pore size of 5 μm to prepare an ink.
<Ink prescription>
<Ink prescription>
-Polymer emulsion type cyan pigment of Production Example 1: 22.91% by mass
-Polyurethane resin emulsion of Production Example 2: 14.80% by mass
-Diethylene glycol monomethyl ether as an organic solvent: 15.0% by mass
-Propylene glycol as an organic solvent: 14.0% by mass
-3-Methoxy-N, N-dimethylpropionamide as an organic solvent: 5.0% by mass
-2-Ethyl-1,3-hexanediol as an organic solvent: 2.0% by mass
-Fluorine surfactant (Unidyne DSN-403N, manufactured by Daikin Industries, Ltd.): 1.0% by mass
-Antiseptic and antifungal agent (Proxel LV, manufactured by Avecia): 0.05% by mass
-PH regulator (triethanolamine): 0.3% by mass
・ Pure water: Remaining amount ・ Total: 100% by mass

(Comparative Example 3)
-Making ink-
An ink having the following formulation was prepared, the pH was adjusted, and then filtration was performed with a membrane filter having an average pore size of 5 μm to prepare an ink.
<Ink prescription>
-Polymer emulsion type cyan pigment of Production Example 1: 22.91% by mass
-Polyurethane resin emulsion of Production Example 2: 14.80% by mass
-1,3-Butanediol as an organic solvent: 15.0% by mass
-Propylene glycol as an organic solvent: 14.0% by mass
-3-Methoxy-N, N-dimethylpropionamide as an organic solvent: 5.0% by mass
-2-Ethyl-1,3-hexanediol as an organic solvent: 2.0% by mass
-Silicone surfactant (L-7002, manufactured by Toray Dow Corning Co., Ltd.): 1.0% by mass
-Fluorine surfactant (Megafuck F-444, manufactured by DIC Corporation): 1.0% by mass
-Antiseptic and antifungal agent (Proxel LV, manufactured by Avecia): 0.05% by mass
-PH regulator (triethanolamine): 0.3% by mass
・ Pure water: Remaining amount ・ Total: 100% by mass

Next, for each of the produced inks, the storage stability, scratch resistance, and beading resistance of the inks were evaluated as follows. The results are shown in Tables 1 to 4.

<Ink storage stability>
Each ink was filled in an ink container, stored at 70 ° C. for 2 weeks, and the rate of change in viscosity after storage with respect to the viscosity before storage was calculated from the following mathematical formula and evaluated according to the following criteria.
A viscometer (RE500L, manufactured by Toki Sangyo Co., Ltd.) was used to measure the viscosity, and the viscosity was adjusted to 50 or 100 rotations according to the viscosity of the sample and measured at 25 ° C.
[Evaluation criteria]
⊚: Viscosity change rate is ± 5% or less ○: Viscosity change rate is more than ± 5% and ± 30% or less ×: Viscosity change rate is more than ± 30% (gelled and cannot be evaluated)

<Abrasion resistance>
In an environment adjusted to 23 ° C. and 50% RH, an inkjet printer (IPSiO GXe-5500, manufactured by Ricoh Co., Ltd.) was used on a recording medium (Lumiart Gloss 90 gsm, manufactured by STORA ENSO), and the amount of ink adhered was 0. A solid image of .75 mg / cm ² was formed.
Next, it is dried at a temperature of 100 ± 2 ° C. and a humidity of 50 ± 15% RH for 1 minute, and a quantitative filter paper (No. 5A, manufactured by Advantech Toyo Co., Ltd.) attached to a CM-1 type clock meter with double-sided tape is applied to the printed portion. After making 10 reciprocations in this way, the reflection density of the ink adhering to the cotton cloth was measured with X-Rite939 (manufactured by X-Rite), the background color of the quantitative filter paper was subtracted, and the reflection density of the dirty part was determined by the following evaluation criteria. Judged.
[Evaluation criteria]
⊚: less than 0.1 ○: 0.1 or more and less than 0.2 ×: 0.2 or more

The recording medium, Lumiart Gloss 90 gsm, manufactured by STORA ENSO, has a coating layer having a thickness of about 10 μm to 15 μm, which mainly contains modified starch, a styrene-butadiene copolymer, and calcium carbonate, on both the front and back surfaces. The amount of pure water transferred at a contact time of 100 ms at 25 ° C. was 2.2 mL / m ² , and the amount of pure water transferred at a contact time of 400 ms was 4.0 mL / m, as measured as follows. It was m ² .
-Measurement of transfer amount of pure water-
The absorption curve of pure water was measured at 25 ° C. using a dynamic scanning liquid absorption meter (model: KS350D, manufactured by Kyowa Seiko Co., Ltd.). The dynamic scanning liquid absorption meter is a device that can accurately measure the amount of liquid absorbed in an extremely short time, and the absorption curve is constant by plotting the transfer amount (mL / m ² ) and the square root of the contact time √ (ms). A straight line with a slope was used, and the value of the amount of transition after a certain period of time was measured by insertion.

<Evaluation of beading resistance>
In an environment adjusted to 23 ° C. and 50% RH, an inkjet printer (IPSiO GXe-5500, manufactured by Ricoh Co., Ltd.) was used on a recording medium (Lumiart Gloss 90 gsm, manufactured by STORA ENSO), and the amount of ink adhered was 0. A solid image of .75 mg / cm ² was formed, and the degree of beading of the solid image was visually observed and evaluated according to the following criteria. The drive voltage of the piezo element was changed so that the amount of ink ejected was even, and the setting was made so that the same amount of ink adhered to the recording medium. As the print mode, the driver attached to the printer was used to modify the "glossy paper-clean" mode to "no color correction".
[Evaluation criteria]
⊚: Uniform printing without beading ○: Beading is observed in some places ×: Severe beading is observed

Here, the detailed contents of the abbreviations in Tables 1 to 4 are as follows. The contents of the polyurethane resin emulsion and the acrylic silicone resin emulsion in Tables 1 to 4 are the contents as emulsions.
-L-7002: Silicone surfactant, manufactured by Toray Dow Corning Co., Ltd., HLB = 8
L-7602: Silicone surfactant, manufactured by Toray Dow Corning Co., Ltd., HLB = 11
FZ-2104: Silicone surfactant, manufactured by Dow Corning Co., Ltd., HLB = 10
-F-444: Fluorine surfactant, Megafuck F-444, manufactured by DIC Corporation, HLB = 8
DSN-403N: Fluorine Surfactant, Unidyne DSN-403N, manufactured by Daikin Industries, Ltd., HLB = 10
-S-242: Fluorine surfactant, Surflon S-242, manufactured by AGC Seimi Chemical Co., Ltd., HLB = 12
-Proxel LV: Antiseptic and antifungal agent, manufactured by Avecia Co., Ltd. Here, the HLBs of the fluorine surfactant and the silicone surfactant are values obtained by the Griffin method using the formula shown below.
HLB = 20 × (formula amount of hydrophilic part of surfactant / molecular weight of surfactant)

Aspects of the present invention are, for example, as follows.
<1> An ink containing a surfactant, an organic solvent, and a resin.
The surfactant contains a silicone surfactant and a fluorine surfactant, and contains
The ink is characterized by containing a glycol ether compound as the organic solvent.
<2> The above-mentioned <1>, wherein the mass ratio (A / B) of the content A of the silicone surfactant and the content B of the fluorine surfactant is 0.3 or more and 2.5 or less. Ink.
<3> The above-mentioned <2>, wherein the mass ratio (A / B) of the content A of the silicone surfactant and the content B of the fluorine surfactant is 0.5 or more and 2.0 or less. Ink.
<4> The ink according to any one of <1> to <3>, wherein the content of the silicone surfactant is 0.5% by mass or more and 2.0% by mass or less.
<5> The ink according to any one of <1> to <4>, wherein the content of the fluorine surfactant is 1.0% by mass or more and 2.0% by mass or less.
<6> The ink according to <5>, wherein the HLB of the fluorine surfactant is 6 or more and 14 or less.
<7> The ink according to <6>, wherein the HLB of the fluorine surfactant is 6 or more and 11 or less.
<8> The ink according to any one of <1> to <7>, wherein the silicone surfactant has an HLB of 6 or more and 14 or less.
<9> The ink according to <8>, wherein the HLB of the silicone surfactant is 8 or more and 12 or less.
<10> At least the glycol ether compound is selected from ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, tetraethylene glycol monomethyl ether, and propylene glycol monoethyl ether. The ink according to any one of <1> to <9>, which is one type.
<11> The ink according to <10>, wherein the glycol ether compound is diethylene glycol monomethyl ether.
<12> The ink according to any one of <1> to <11>, wherein the resin is at least one of a polyurethane resin and an acrylic silicone resin.
<13> The ink according to any one of <1> to <12>, which further contains water and a coloring material.
<14> The ink according to <13>, wherein the coloring material is a pigment.
<15> An ink container having an ink accommodating portion for accommodating the ink according to any one of <1> to <14>.
<16> An inkjet recording method in which ink is ejected from a nozzle of a recording head and applied to a recording medium for recording.
The inkjet recording method is characterized in that the ink is the ink according to any one of <1> to <14>.
<17> The recording medium comprises a support and a coating layer on at least one surface of the support, and pure water having a contact time of 100 ms measured by a dynamic scanning liquid absorbent meter at 25 ° C. The transfer amount to the recording medium is 2 mL / m ² or more and 35 mL / m ² or less, and the transfer amount of pure water to the recording medium at a contact time of 400 ms is 3 mL / m ² or more and 40 mL / m ² or less. The inkjet recording method according to <16>.
<18> An inkjet recording device comprising the ink container according to <15> and a recording head for ejecting ink droplets.
<19> A recorded object comprising a recording medium and an image formed on the recording medium using the ink according to any one of <1> to <14>. ..
<20> The recording medium has a support and a coating layer on at least one surface of the support, and is pure water at a contact time of 100 ms measured by a dynamic scanning liquid absorber at 25 ° C. The transfer amount of pure water to the recording medium is 2 mL / m ² or more and 35 mL / m ² or less, and the transfer amount of pure water to the recording medium at a contact time of 400 ms is 3 mL / m ² or more and 40 mL / m ² or less. It is a record according to the above <19>.

The ink according to any one of <1> to <14>, the ink storage container according to <15>, the inkjet recording method according to any one of <16> to <17>, and the above <18>. According to the above-described inkjet recording device and the recorded material according to any one of <19> to <20>, the above-mentioned problems in the prior art can be solved and the object of the present invention can be achieved.

400 Image forming device 401 Image forming device exterior 401c Device body cover 404 Cartridge holder 410 Main tank 410k, 410c, 410m, 410y For each color of black (K), cyan (C), magenta (M), yellow (Y) Main tank 411 Ink storage unit 413 Ink discharge port 414 Storage container case 420 Mechanical unit 434 Discharge head 436 Supply tube

Japanese Unexamined Patent Publication No. 2012-179825 Japanese Unexamined Patent Publication No. 2013-151593 Japanese Unexamined Patent Publication No. 2011-79991 Japanese Unexamined Patent Publication No. 2013-176972

Claims (8)

An ink containing a surfactant, an organic solvent, and a resin.
The surfactant contains a silicone surfactant and a fluorine surfactant, and contains
Look containing a glycol ether compound as the organic solvent,
An ink characterized in that the HLB of the fluorine surfactant is 6 or more and 11 or less . The ink according to claim 1, wherein the mass ratio (A / B) of the content A of the silicone surfactant and the content B of the fluorine surfactant is 0.3 or more and 2.5 or less. The ink according to any one of claims 1 to 2, wherein the content of the silicone surfactant is 0.5% by mass or more and 2.0% by mass or less. The ink according to any one of claims 1 to 3, wherein the content of the fluorine surfactant is 1.0% by mass or more and 2.0% by mass or less. The ink according to any one of claims 1 to 4, wherein the HLB of the silicone surfactant is 6 or more and 14 or less. An ink containing container comprising an ink containing portion containing the ink according to any one of claims 1 to 5. An inkjet recording method in which ink is ejected from a nozzle of a recording head and applied to a recording medium for recording.
The inkjet recording method, wherein the ink is the ink according to any one of claims 1 to 5. The recording medium comprises a support and a coating layer on at least one surface of the support, and the recording of pure water at a contact time of 100 ms measured by a dynamic scanning liquid absorber at 25 ° C. The amount of transfer to the medium is 2 mL / m ² Above 35 mL / m ² The amount of pure water transferred to the recording medium at a contact time of 400 ms is 3 mL / m. ² More than 40 mL / m ² The inkjet recording method according to claim 7, which is described below.