Abstract: An ultraviolet curable inkjet recording ink of the present invention includes at least a colorant, a light-curable compound, a photopolymerization initiator, and at least one fluorine surfactant represented by the following formulae (1) or (2) as a surface tension regulator: where Rf is selected from CH2CF3 and CH2CF2CF3; n represents a value of 5 to 20; and each R1 represents a functional group capable of initiating an ultraviolet curing reaction and one of the two R1s in (1) may be hydrogen; where Rf is selected from CH2CF3 and CH2CF2CF3; l represents a value of 1 to 20; k and m each represent a value of 1 to 8; each R2 represents a functional group capable of initiating an ultraviolet curing reaction and one of the two R2s in (2) may be hydrogen; and R3 is selected from hydrogen and methyl.

Abstract: An ink for inkjet recording containing water, water-soluble organic solvent, water-dispersible resin, fluorochemical surfactant or derivative thereof, and coloring agent containing pigment, where the ink has a surface tension of 20-35 mN/m and viscosity of ?5 mPa·s at 25° C., total amount of the water-dispersible resin and the coloring agent in the ink is 5-40% by mass, and mass ratio A/B of the water-dispersible resin A to the coloring agent B is 0.5-4, where the ink is applied to a recording medium containing a support containing cellulose pulp, and one or more barrier layers disposed on a face of the support, and where the barrier layer contains ?30% by mass of inorganic pigment having refractive index of ?1.5, excluding aluminum hydrate, and ?10% by mass of inorganic pigment having a refractive index of <1.5.

Abstract: There is provided an inkjet recording ink and recording media set, which contains: an inkjet recording ink; and a recording medium, wherein the inkjet recording ink comprises at least: water; a water-soluble organic solvent; and a colorant containing carbon black, and having a volume average particle diameter of 40 nm to 100 nm, wherein the recording medium contains: a substrate; and a coating layer on at least one side of the substrate, and wherein an amount of pure water transferred to the recording medium, as measured with a dynamic scanning absorptometer at 23 C and 50% RH, at a contact time of 100 ms is 2 ml/m2 to 35 ml/m2 while an amount of pure water transferred to the recording medium at a contact time of 400 ms is 3 ml/m2 to 40 ml/m2.

Abstract: The object of the invention to provide a recording ink with excellent discharge stability and storage stability, which rapidly penetrates into a recording medium and forms a coating, and which will never generate smearing upon high-speed printing or double-sided printing, and which excels in marker resistance, and which enables high quality image recording with less bleeding, and the ink cartridge, the ink record, the inkjet recording apparatus, and the inkjet recording method using the recording ink. The recording ink containing at least water, a colorant, a resin fine-particle, a water-soluble organic solvent and a penetrant, in which the penetrant is a diol compound whose carbon number is 7 to 11 and the resin fine-particle is a silicone modified acrylic resin not containing a hydrolyzable silyl group.

Abstract: An inkjet recording ink including: a colorant; surfactant A; surfactant B; a water-soluble organic solvent; and water, wherein the surfactant A is represented by General Formula (1), and the surfactant B is at least one selected from compounds represented by General Formulas (2a) and (2b): where Rf represents CF3, CF2CF3, (CF2)3F or (CF2)4F, X and Y each are an integer of 1 or greater, and X+Y=4 or 5; where R3 and R4 each represent a hydrogen atom or a C1-20 alkyl group, r is a real number of 0 to 7, and s is a real number of 1 to 10, where each of R3 and R4 represents a hydrogen atom or a C1-20 alkyl group, t is a real number of 0 to 7, and u is a real number of 1 to 10.

Abstract: To provide an ink for inkjet recording containing water, water-soluble organic solvent, water-dispersible resin, fluorochemical surfactant or derivative thereof, and coloring agent containing pigment, wherein the ink has a surface tension of 20-35 mN/m and viscosity of 5 mPa·s or more at 25° C., total amount of the water-dispersible resin and the coloring agent in the ink is 5-40% by mass, and mass ratio A/B of the water-dispersible resin A to the coloring agent B is 0.5-4, wherein the ink is applied for a recording medium for inkjet recording containing a support containing cellulose pulp, and one or more barrier layers disposed on at least one face of the support, and wherein the barrier layer contains 30% by mass or more of inorganic pigment having refractive index of 1.5 or more, excluding aluminum hydrate, and 10% by mass or less of an inorganic pigment having a refractive index of less than 1.5.

Abstract: A recording ink containing: a solid component containing a colorant, and a resin, and being solid in ink at 25° C., a liquid component having a boiling point higher than that of water and being liquid in ink at 25° C., and water, wherein the total amount of the solid component contained in the recording ink is equal to 8.5% by mass or higher and less than 15% by mass, a ratio (A/B) of the total amount of a water-soluble organic solvent (A), which is contained in the liquid component and has a high-boiling point of 280° C. or higher (A), to the total amount of the solid component (B) contained in the recording ink is 1.1 to 2.5, and a ratio (C/B) of the total amount of the liquid component (C) in the recording ink to the total amount of the solid component (B) in the recording ink is 1.85 to 3.10.

Abstract: There is provided a recording ink containing: solid constituents, which contain a colorant and a resin, and stay solid in the ink having a temperature of 25° C.; liquid constituents, which have a higher boiling point than a boiling point of water, and stay liquid in the ink having a temperature of 25° C.; and water, wherein a total amount of the solid constituents in the recording ink is in the range of 2.0% by mass or more to less than 20% by mass, wherein a ratio A/B of a total amount of the liquid constituents in the recording ink A to the total amount of the solid constituents in the recording ink B is from 0.70 to 1.75, and wherein the viscosity of the recording ink at 25° C. is 10 mPa s or less.

Abstract: An ink-jet recording method including: printing on a medium by ejecting thereon ink having a pH value of 8 or more and containing at least a particulate colorant, emulsion resin and surfactant, the medium prepared by providing at least a coat layer containing a pigment on at least one surface of a substrate containing cellulose pulp as a main component, wherein printing is performed at a deposited ink amount of 15 g/m2 or less, and wherein the medium has a pH value of 8 or more at a paper surface, and the amount of pure water transferring onto a surface of the medium having the coat layer after a contact time of 100 ms measured with a dynamic scanning absorptometer is 1 mL/m2 or less and the amount of pure water transferring onto the surface of the medium after a contact time of 400 ms is 35 mL/m2 or less.

Abstract: A printing medium including at least base paper and a coating layer, wherein the coating layer is directly formed on the base paper by a cast coating method using a coating liquid, which contains kaolin and amorphous silica and contains the amorphous silica in an amount of 3% by mass to 20% by mass.

Abstract: Inkjet recording treatment liquids include: at least one water-soluble organic solvent; water; at least one compound according to formula (I) wherein: each of R1 and R3 independently represents H, a lower alkoxy group, or a lower perfluoroalkoxy group; each of R2 and R4 independently represents a lower perfluoroalkyl group; each of p, q, and r is independently an integer of 1 to 24; m is an integer of 1 to 28; and n is an integer of 0 to 10; and at least one compound according to formula (II) wherein: each of R5, R6, and R7 independently represents a lower alkyl group, a lower perfluoroalkoxy group, or F; and M is Li, Na, or K. Methods of inkjet recording, inkjet recording apparatus, storage bags, and cartridges employing the inkjet recording treatment liquids are also provided.

Abstract: There is provided an ink for recording, which contains: a coloring agent; a water-dispersible resin; a wetting agent; a surfactant; and water, wherein a total solid content of the coloring agent and the water-dispersible resin is 10% by mass to 30% with respect to a total mass of the ink, a ratio B/C is 0.1 to 1.6 where B is a solid content of the coloring agent in the ink, and C is a solid content of the water-dispersible resin in the ink, a viscosity of the ink is 5 mPa·s to 20 mPa·s at 25° C., and a surface tension of the ink is 35 mN/m or less.

Abstract: There is provided an ink for recording, which contains: a coloring agent; a water-dispersible resin; a wetting agent; a surfactant; and water, wherein a total solid content of the coloring agent and the water-dispersible resin is 10% by mass to 30% with respect to a total mass of the ink, a ratio B/C is 0.1 to 1.6 where B is a solid content of the coloring agent in the ink, and C is a solid content of the water-dispersible resin in the ink, a viscosity of the ink is 5 mPa·s to 20 mPa·s at 25° C., and a surface tension of the ink is 35 mN/m or less.

Abstract: An inkjet recording ink including a water-soluble organic solvent, a colorant, at least one fluorine-based surfactant having a chemical structure represented by Structural Formula (I) below, and water, where Rf represents any one of CF3, CF2CF3, (CF2)3F, and (CF2)4F, and X plus Y is an integer of 4 or 5.

Abstract: An ultraviolet curable inkjet recording ink of the present invention includes at least a colorant, a light-curable compound, a photopolymerization initiator, and at least one fluorine surfactant represented by the following formulae (1) or (2) as a surface tension regulator: where Rf is selected from CH2CF3 and CH2CF2CF3; n represents a value of 5 to 20; and each R1 represents a functional group capable of initiating an ultraviolet curing reaction and one of the two R1s in (1) may be hydrogen; where Rf is selected from CH2CF3 and CH2CF2CF3; 1 represents a value of 1 to 20; k and m each represent a value of 1 to 8; each R2 represents a functional group capable of initiating an ultraviolet curing reaction and one of the two R2s in (2) may be hydrogen; and R3 is selected from hydrogen and methyl.

Abstract: An ink-jet recording ink including water, a water-soluble organic solvent, a pigment (P1) as a colorant (B), and at least one fluorochemical surfactant selected from compounds represented by Structural Formula (1) below, where R1 denotes any one of a hydrogen atom, an alkyl group and a fluorine-containing group, Rf denotes a fluorine-containing group, and each of x, y and z denotes an integer of 1 or greater.

Abstract: A recording ink containing: a solid component containing a colorant, and a resin, and being solid in ink at 25° C., a liquid component having a boiling point higher than that of water and being liquid in ink at 25° C., and water, wherein the total amount of the solid component contained in the recording ink is equal to 8.5% by mass or higher and less than 15% by mass, a ratio (A/B) of the total amount of a water-soluble organic solvent (A), which is contained in the liquid component and has a high-boiling point of 280° C. or higher (A), to the total amount of the solid component (B) contained in the recording ink is 1.1 to 2.5, and a ratio (C/B) of the total amount of the liquid component (C) in the recording ink to the total amount of the solid component (B) in the recording ink is 1.85 to 3.10.

Abstract: An ink-jet recording ink including water, a water-soluble organic solvent, a pigment as a colorant (B), and at least one fluorochemical surfactant selected from compounds represented by Structural Formula (1) below, Structural Formula (1) where R1 denotes any one of a hydrogen atom, an alkyl group and a perfluoroalkyl group, R2 denotes any one of a hydrogen atom, an alkyl group and a fluorine-containing group, Rf denotes a fluorine-containing group, and m and n each denote an integer of 1 or greater.

Abstract: The object of the invention to provide a recording ink with excellent discharge stability and storage stability, which rapidly penetrates into a recording medium and forms a coating, and which will never generate smearing upon high-speed printing or double-sided printing, and which excels in marker resistance, and which enables high quality image recording with less bleeding, and the ink cartridge, the ink record, the inkjet recording apparatus, and the inkjet recording method using the recording ink.

Abstract: The object of the invention to provide a recording ink with excellent discharge stability and storage stability, which rapidly penetrates into a recording medium and forms a coating, and which will never generate smearing upon high-speed printing or double-sided printing, and which excels in marker resistance, and which enables high quality image recording with less bleeding, and the ink cartridge, the ink record, the inkjet recording apparatus, and the inkjet recording method using the recording ink. The recording ink containing at least water, a colorant, a resin fine-particle, a water-soluble organic solvent and a penetrant, in which the penetrant is a diol compound whose carbon number is 7 to 11 and the resin fine-particle is a silicone modified acrylic resin not containing a hydrolyzable silyl group.