Abstract: There is provided an ultraviolet-curable aqueous ink containing: a continuous phase containing water; and a dispersed phase dispersed in the continuous phase, wherein the dispersed phase contains a water-insoluble ultraviolet polymerizable compound, and a water-insoluble ultraviolet polymerization initiator having an absorption at a wavelength range of 375 nm or more and 450 nm or less.

Abstract: An aqueous ink for inkjet includes water; a hydrosoluble organic solvent; a pigment; and a particulate resin. The hydrosoluble organic solvent includes 2,3-butanediol and 1,2-propanediol at a weight ratio (2,3-butanediol/1,2-propanediol) of from 98/2 to 60/40.

Abstract: A liquid application apparatus includes a first container, an applicator, a squeezer, a second container, a retreat passage, a filter, an on-off valve, and a sensor. The first container stores a pretreatment liquid before image forming. The retreat passage communicates the first container with the second container. The filter is disposed on the retreat passage to remove foreign substances from the liquid. The on-off valve is disposed between the second container and the filter on the retreat passage. The sensor is disposed at the first container to detect a liquid level of the first container in at least two positions different in height and obtain a flow rate of the liquid in the retreat passage based on a period during which the liquid level moves between the positions when the on-off valve is opened and the liquid stored in the first container is transferred to the second container.

Abstract: The invention provides a production process for a self-dispersible pigment, including a step of bonding a functional group containing a hydrophilic group to a particle surface of a pigment by causing a compound represented by the following general formula (1) (R1 is a halogen atom, R2 is an alkali metal, R3 is a single bond, —CO—, —CONH— or —SO2—, and R4 is a group having at least one of an aliphatic group and an aromatic group and being substituted with a hydrophilic group such as a carboxylic acid group) to react with the particle surface of the pigment:

Abstract: The invention provides a production process for a self-dispersible pigment, having a step of bonding a group R1 in the following general formula (1) to a particle surface of a pigment by radical addition reaction induced by removal of a hydrogen atom from a compound represented by the general formula (1): HN?N—R1 ??(1) wherein R1 is a group having at least one of an aliphatic group and an aromatic group and being substituted with at least one hydrophilic group selected from the group consisting of a carboxylic acid group, a sulfonic acid group, a phosphoric acid group and a phosphoric acid group.

Abstract: The present invention preferably provides an ink including an organic pigment, a water-soluble resin and a surfactant that allows images having high color developability to be obtained independently of the type of recording medium, even when a small amount of ink is applied. Preferably, the organic pigment is a phosphonic acid-type self-dispersible pigment, the acid value of the water-soluble resin is 100 mg KOH/g to 160 mg KOH/g, the surfactant is an ethylene oxide adduct of a higher alcohol selected from the group consisting of a linear primary alcohol, a linear secondary alcohol and an isoalkyl alcohol, the HLB value of the surfactant as determined by the Griffin method is 13.0 or more, and the mass ratio of the content (% by mass) of the surfactant in the ink to the content (% by mass) of the water-soluble resin in the ink is 0.07 to 0.70.

Abstract: To provide a treatment liquid for treating a recording medium, which contains a water-soluble organic solvent, a surfactant, water, and an amphoteric emulsion resin having a core-shell structure.

Abstract: An ink can be substantially invisible under most lighting conditions, and only visible when excited by UV energy having a wavelength specific to the colorant. The ink can include a liquid vehicle and a fluorescent colorant. The fluorescent colorant can have an average particle size of less than about 200 nm. Such ink can be configured as an ink-jet ink.

Abstract: An in situ process for preparing a phase change magnetic ink including heating a phase change ink composition to a first temperature sufficient to provide a melt composition; wherein the phase change ink composition comprises a carrier, an optional colorant, and an optional dispersant; placing the melt composition under inert atmosphere; heating the melt composition to a second temperature sufficient to effect decomposition of a metal carbonyl; adding the metal carbonyl to the melt composition under inert atmosphere at this second temperature to form metal nanoparticles thus forming in situ a phase change magnetic ink including the metal nanoparticles; optionally, filtering the phase change magnetic ink while in a liquid state; and cooling the phase change magnetic ink to a solid state.

Abstract: A post-treatment liquid for inkjet recording including a urethane resin, a fluorosurfactant, a water-soluble organic solvent and water.

Abstract: A water-based ink for ink-jet recording includes a pigment; water; an acetylene glycol-based surfactant contained by 0.1% by weight to 0.3% by weight in the water-based ink; tripropylene glycol methyl ether contained by 2.5% by weight to 4.5% by weight in the water-based ink; and tripropylene glycol n-butyl ether contained by 0.5% by weight to 1.5% by weight in the water-based ink.

Abstract: The present invention provides an ink that can achieve image characteristics for recording an image having excellent optical density, bleeding resistance, and white blur resistance and also can achieve reliability that provides excellent sticking resistance to a recording head. The ink is one for ink jet containing a first pigment and second pigment. The first pigment is a self-dispersible pigment to a surface of a particle of which a first functional group containing a phosphonic acid group is bonded. The second pigment is a self-dispersible pigment to a surface of a particle of which a second functional group not containing a phosphonic acid group but containing an anionic group other than the phosphonic acid group, and further containing another atomic group is bonded. The introduced amount of the functional group of the second pigment is 0.25 mmol/g or more.

Abstract: A high viscosity aqueous inkjet ink that is useful in ink jet printers. The ink comprises heat activated colorant solids that are not heat activated during the printing process, and are printed onto a substrate in the form of an image that can be transferred onto a subsequent or final substrate by applying heat and intimate contact between the two substrates. The ink can also be heat activated onto the substrate without further transfer by applying heat at the temperature that is suitable for the activation of the colorant.

Abstract: A ink composition for ink jet recording in which a non-absorbent or low absorbent recording medium is used includes water; a color material; a surfactant; a compound I represented by general formula (I) below; and does not substantially include alkyl polyols with a standard boiling point of 280° C. or higher; in which the surfactant is at least one type selected from a group consisting of a fluorine-based surfactant and a siloxane-based surfactant with 5 or more siloxane units [In general formula (I), n represents an integer of 45 or higher to 230 or lower, each R1 independently represents an unmodified, an ether-modified, a polyester-modified, an epoxy-modified, an amine-modified, a carboxyl-modified, a fluorine-modified, an alkyloxy-modified, a mercapto-modified, a (meth)acryl-modified, a phenol-modified, a phenyl-modified, a carbinol-modified or an aralkyl-modified hydrocarbon group.].

Abstract: There is provided an ink-jet recording apparatus, including: a water-based ink which contains glycol ether and water; and an element which is configured to contact with the water-based ink, is formed of a polyacetal resin, and contains aliphatic amide in an amount of less than 29 ppm by weight.

Abstract: An ink set for inkjet recording includes: an ink composition including a pigment, a water-soluble polymerizable compound, and water; and a maintenance liquid that has a pH higher than 8.5 and that includes water and a water-soluble organic solvent having an SP value higher than 27.5 MPa1/2, the amount of water contained in the maintenance liquid being 50% by mass or more with respect to the total amount of the maintenance liquid, the amount of water-soluble organic solvent contained in the maintenance liquid having an SP value higher than 27.5 MPa1/2 being from 5 to 30% by mass with respect to the total amount of the maintenance liquid, and the amount of water-soluble organic solvent contained in the maintenance liquid having an SP value of 27.5 MPa1/2 or lower being less than 5% by mass with respect to the total amount of the maintenance liquid.

Abstract: An ink jet ink contains a polyurethane polymer and a self-dispersing pigment. The polyurethane polymer has units derived from a polyisocyanate, a polyol having no acid group, and a diol having an acid group. The molar ratio of the percentage of the urethane bond in the polyurethane polymer to the percentage of the urea bond in the polyurethane polymer is 85.0/15.0 or more and 100.0/0 or less. The ink jet ink may be capable of producing an image having high optical density, scratch resistance, and highlighter resistance, and which has excellent ink ejection stability and can reduce image deflection caused by face wetting.

Abstract: A photo-curable ink jet ink set includes an undercoating photo-curable ink jet ink containing a (meth)acrylic acid ester having a vinyl ether group expressed by general formula (I), and an overcoating photo-curable ink jet ink. The undercoating photo-curable ink jet ink has a higher surface tension than the overcoating photo-curable ink jet ink.

Abstract: After one ink of a white ink or a silver ink is ejected in a predetermined position of a recording medium such as a piece of recording paper to form a base layer, the other ink thereof is ejected on the base layer to form an intermediate layer, and a clear ink is ejected on the intermediate layer to form an epidermal layer.

Abstract: The present disclosure provides ink sets and related methods mix color gloss uniformity. The ink set can include a black ink with a black pigment having a particle size of about 14 nm to about 16 nm, a DBP absorption of about 80 ml/100 g to about 350 ml/100 g, and a BET surface area of about 160 m2/g to about 1600 m2/g. The ink set can also include pigmented magenta ink, pigmented cyan ink, and pigmented yellow ink. As a whole, the ink set can have a mix color gloss uniformity of at least 7.