Abstract: The invention provides a water-based ink composition including: a water-based medium, a colored particle containing a pigment and a water-insoluble polymer dispersant, and a self-dispersing polymer particle including a hydrophilic constituent unit, and a hydrophobic constituent unit derived from alicyclic (meth)acrylate, as well as an ink set comprising the water-based ink composition, and an image forming method using the aqueaous ink composition or the ink set.

Abstract: There are provided an ink composition including a coloring material, a hydrophilic organic solvent, polymer particles that have a minimum filming temperature (MFTdisp) of 60° C. or more when dispersed in water and that have a MFT 40° C. or more lower than the MFTdisp when mixed with water and 25 mass % of the hydrophilic organic solvent based on a solid content of the polymer, and water; an ink set including the ink composition and a treating liquid capable of forming an aggregate upon contact with the ink composition; and an ink-jet recording method using the ink composition or the ink set.

Abstract: An ink set for inkjet recording including an ink composition including a dispersion of a pigment dispersed by a water-insoluble polymer which is formed by copolymerizing a monomer mixture containing a styrenic macromer, as well as self-dispersing polymer particles, a water-soluble organic solvent, and water; and a reactive liquid which forms an aggregate when contacted with the ink composition; and an image recording method using the ink set, are provided.

Abstract: An ink set for ink jet recording including an ink composition containing a coloring material, and a polymer particle including 65 mass % or more of a constituent unit derived from a methacrylic acid derivative, and a treating liquid which forms an aggregate when contacted with the ink composition, and an ink jet recording method using the same are provided.

Abstract: The inkjet recording method includes: a treatment liquid depositing step of applying treatment liquid onto a recording medium while holding the recording medium on a circumferential surface of a treatment liquid drum and conveying the recording medium by rotating the treatment liquid drum, and drying at least a portion of a solvent in the treatment liquid; an image forming step of ejecting ink from a line type inkjet head to deposit the ink onto the recording medium on which the treatment liquid has been deposited, while holding the recording medium on a circumferential surface of an image formation drum and conveying the recording medium by rotating the image formation drum, the ink containing at least a resin dispersant (A), a pigment (B) that is dispersed by the resin dispersant (A), self-dispersible polymer micro-particles (C) and an aqueous liquid medium (D), the ink having one of a solid component that is aggregated upon making contact with the treatment liquid and a solid component that is precipitated

Abstract: The method forms an image by directly depositing aqueous ink ejected from an inkjet recording apparatus onto a recording medium.

Abstract: An ink-jet recording method is provided. The ink-jet method includes recording an images by ejecting, onto a recording medium by an-inkjet method, a liquid composition containing polymer particles having a glass transition temperature (Tg) higher than the minimum film forming temperature (MFT), a hydrophilic organic solvent, a surfactant, and water under ejection conditions satisfying all of the following (1) to (3): (1) Tg>the temperature of the liquid composition at the time of ejection>MFT, (2) MFT>20° C., and (3) the temperature of the liquid composition at the time of ejection is 30° C. or higher.

Abstract: A recording liquid is provided. The recording liquid includes particles A including a water-insoluble colorant and a compound containing a hydrophilic group, the particles A having a dispersion average particle diameter from 5 to 50 nm; and a self-dispersible polymer particles B including a constituent unit derived from an aromatic group-containing acrylate monomer.

Abstract: An ink set for inkjet recording is provided. The ink set includes: at least one kind of ink composition that contains self-dispersing polymer particles, a color material, a hydrophilic organic solvent and water; and a reaction liquid capable of forming an aggregate upon contact with the ink composition.

Abstract: The invention provides a self-dispersible polymer having one or more hydrophilic structural units and one or more aromatic group-containing structural units. The content of the aromatic group-containing structural units is in a range from 10 mass % to 95 mass % with respect to the total mass of the self-dispersible polymer, and the content of one or more water soluble components, which are contained in the self-dispersible polymer and exhibit solubility in water when the self-dispersible polymer is dispersed in a water-based medium, is 10 mass % or less with respect to the total mass of the self-dispersible polymer.

Abstract: The invention provides a method of producing an inkjet ink, the method including at least subjecting a polymer particle dispersion liquid to centrifuge processing, and mixing the polymer particle dispersion liquid that has been subjected to the centrifuge processing and a water-insoluble coloring particle dispersion liquid, as well as an ink set including the produced inkjet ink and a processing liquid that causes the ink to aggregate.

Abstract: There is provided a water-based ink composition including water-insoluble colored particles, and water-insoluble particles that includes a carboxylate emulsifier and a water-insoluble polymer, and an ink set including at least one water-based ink composition, and a treating liquid that changes pH of the water-based ink composition.

Abstract: An optical film, which contains a cellulose acylate, at least one compound of formula (I) in an amount of 0.01 to 20 mass parts, and at least one cyclic compound having at least three substituents in an amount of 0.01 to 20 mass parts, to 100 mass parts of the cellulose acylate: wherein R1 to R7, R9 and R10 each independently is a hydrogen atom or a substituent; at least one of R1 to R5 is an electron-donating group; R8 is a hydrogen atom, an alkyl group, an alkenyl group, an alkinyl group, an aryl group, an alkoxy group, an aryloxy group, an alkoxycarbonyl group, an acylamino group, an alkylcarbonyloxy group, a cyano group, or a halogen atom; and an optical compensation sheet, a polarizing plate, and a liquid crystal display device, each of which uses the optical film.

Abstract: An ink composition includes: first particles which are insoluble and dispersed in an aqueous dispersion medium, a polarity of the first particles being one of positive and negative; and second particles which are insoluble and dispersed in the aqueous dispersion medium, the second particles including both a cationic group and an anionic group, the second particles having a zeta potential that changes along with a change in pH of the aqueous dispersion medium, percentage of a water-soluble component in the second particles being not higher than 5% by mass.

Abstract: Disclosed is a silver halide photographic light-sensitive material, which has at least one polymer compound having a nitrogen-containing aromatic ring having a mercapto group represented by the formula Z-SH wherein Z represents a nitrogen-containing aromatic ring as a partial structure. This silver halide photographic light-sensitive material can stably contain silver halide grains of a high aspect ratio showing high sensitivity and superior planarity, shows superior pressure resistance and can be stably prepared.

Abstract: The ink composition includes: a coloring material; a resin which is a block copolymer constituted of at least one hydrophilic block and at least one hydrophobic block; and one of an element and a compound of a polyvalent metal having an atomic weight of not less than 65. The mol ratio of the resin to the one of the element and the compound of the polyvalent metal is 1:6 through 10000:1.

Abstract: The image recording method for forming an image on a recording medium, includes the step of applying droplets of stimulus-responsive ink which responds to a stimulus so that the stimulus-responsive ink converts from a sol state to a gel state, on the recording medium, wherein each of the droplets of the stimulus-responsive ink has a volume of 0.5 pl to 2.5 pl.

Abstract: A photothermographic material of the present invention comprises: a support; a photosensitive silver halide; a non-photosensitive organic silver salt; a heat developer; a binder; and a fluorine compound containing a specific structure.

Abstract: Disclosed is a silver halide photographic light-sensitive material comprising at least one silver halide emulsion layer on a support, which contains a fluorine compound having two or more fluorinated alkyl groups having two or more carbon atoms and 11 or less fluorine atoms and having at least one of an anionic hydrophilic group and a nonionic hydrophilic group, and has a characteristic curve drawn in orthogonal coordinates of logarithm of light exposure (x-axis) and optical density (y-axis) using equal unit lengths for the both axes, on which gamma is 5.0 or more for the optical density range of 0.3-3.0. There is provided a silver halide photographic light-sensitive material that provides high sensitivity, high contrast, favorable half tone dot quality and superior storage stability.

Abstract: A silver halide photographic light-sensitive material and an aqueous coating composition, each containing at least one compound represented by formula (1): in which, in formula (1), A1 and A2 each independently represent a hydrogen atom or a fluorine atom, x and y each independently represent an integer of from 1 to 6, L1 and L2 each independently represent —CH2— or —CH2OCH2—, z represents the number of from 1 to 60, R1 and R2 each independently represent a hydrogen atom or a substituent, and R3, R4, R5 and R6 each independently represent a hydrogen atom, a methyl group or a hydroxymethyl group.