Abstract: Disclosed is a material set for recording, including: an ink including a recording material, an organic solvent, and water; and ink receiving particles including an organic resin including hydrophilic monomer components and one or more hydrophobic monomer components, the hydrophilic monomer components including a monomer component having a hydroxyl group and a monomer component having a dissociable group, an absolute value of a difference between a solubility parameter (SP value) of the organic solvent included in the ink and a solubility parameter (SP value) of monomer components included in the organic resin, other than the monomer component having a dissociable group, being less than 5.

Abstract: A material set for recording includes: ink receiving particles that include a resin having an acid value of from about 50 mg KOH/g to about 750 mg KOH/g, and have a neutralization degree of from more than 0 to less than 1; and an ink that includes at least a colorant, a water-soluble solvent, and water, a value obtained by multiplying an electrical conductivity ? (S/m) of the ink by a viscosity ? (mPa·s) of the ink being from about 0.02 to about 5.0.

Abstract: A recording device including: an intermediate transfer member; a particle supply unit that supplies ink receiving particles that receive ink onto the intermediate transfer member; an ink ejecting unit that ejects ink to the ink receiving particles that have been supplied onto the intermediate transfer member; a transfer unit that transfers the ink receiving particles that have received the ink to a recording medium from the intermediate transfer member; a cleaning unit that cleans the ink receiving particles remaining on the intermediate transfer member after the transfer of the ink receiving particles by the transfer unit; and a cleaning aid particle supply unit that supplies cleaning aid particles.

Abstract: An ink receptive particle comprising an organic resin that is formed by a hydrophilic monomer and a hydrophobic monomer, the hydrophilic monomer including a hydrophilic group having a salt structure and a hydrophilic group not having a salt structure.

Abstract: A recording apparatus has an intermediate transfer member; a feeding unit that feeds, to the intermediate transfer member, ink receptive particles containing at least an organic resin whose monomers include at least one polar monomer having at least one polar group, a ratio of the at least one polar monomer to all the monomers of the organic resin being about 10 mol % to about 90 mol %; a liquid application unit that applies a liquid that neutralizes the at least one polar group of the at least one polar monomer onto the ink receptive particles fed onto the intermediate transfer member; an ink application unit that applies an ink to the ink receptive particles fed onto the intermediate transfer member; a transfer unit that transfers the ink receptive particles onto a recording medium; and a fixing unit that fixes the ink receptive particles on the recording medium.

Abstract: An ink-jet ink set having a first liquid and a second liquid, wherein the first liquid includes a colored particle, a dispersant, a water-soluble solvent, and water, the second liquid includes a water-soluble solvent, water, a coagulant capable of coagulating or insolubilizing the first liquid, the colored particle has a core-shell structure in which a core part is coated with a shell part, the core part includes an uncolored component, and the shell part includes a colored component. An ink-jet ink tank, an ink-jet recording method and an ink-jet recording apparatus utilizing the ink-jet ink set.

Abstract: According to the invention, there is provided an ink comprising a pigment, in which a group having a functional group is chemically bonded to the surface of the pigment, water, and a water-soluble organic solvent, wherein the amount of solid components having a molecular weight of 500 or more in the supernatant when the ink is subjected to centrifugation at a gravitational acceleration of 2×105 G for 60 minutes being in the range of from approximately 0.1 to approximately 35% by mass with respect to the total amount of solid components in the ink.

Abstract: An inkjet recording method which prints out by ejecting onto a recording medium an ink set for inkjet use, wherein the ink set includes at least: a first liquid containing at least a coloring material, a water soluble solvent and water; a second liquid containing at least a coagulant, a water soluble solvent and water; and a third liquid containing at least a coagulant, a water soluble solvent and water; wherein, (A) printing modes include a single sided printing mode and a double sided printing mode, (B) when the single sided printing mode is selected printing is carried out by ejecting the first liquid and the second liquid, (C) when the double sided printing mode is selected printing is carried out by ejecting the first liquid and the third liquid, (D) the relationship 0.

Abstract: The invention provides an ink jet recording method which includes ejecting an ink set. The ink set includes a first liquid which includes a colorant, a water soluble solvent and water, and a second liquid which includes a coagulating agent, a water soluble solvent and water. Recording in a double sided print mode and recording in a single sided print mode are possible. The following Expression (1) is satisfied. 0.01 < RD 2 × RM 1 RD 1 × RM 2 < 1 Expression ? ? ( 1 ) In Expression (1), RD1 is an application amount per unit area of the first liquid in double sided printing mode. RD2 is an application amount per unit area of the second liquid in double sided printing mode. RM1 is an application amount per unit area of the first liquid in single sided printing mode. RM2 is an application amount per unit area of the second liquid in single sided printing mode.

Abstract: A recording apparatus comprises: an intermediate transfer body; a releasing agent supply device that supplies a releasing agent onto the intermediate transfer body; a particle supply device that supplies hydrophilic ink-recipient particles that receive an ink, onto the releasing agent supplied onto the intermediate transfer body; an ink ejection device that ejects the ink onto the ink-recipient particles supplied onto the intermediate transfer body; and a transfer device that transfers the ink-recipient particles that received the ink, onto a recording medium from the intermediate transfer body, the releasing agent comprising at least one selected from the group consisting of a silicone oil, a fluorinated oil and an organic compound having a solubility parameter (SP value) of about 11 or less.

Abstract: Ink receptive particles for receiving ink, including: particles P including hydrophilic polymer particles having a ratio of hydrophilic monomer(s) to the total monomer components thereof of from about 10 mol % to about 90 mol %; and hydrophobic polymer particles, attached to at least a part of a surface of the particles P and having a ratio of hydrophilic monomer(s) to the total monomer components thereof of from about 0 mol % to about 10 mol %.

Abstract: The invention provides a treatment liquid for ink jet, which includes at least an organic acid having a pKa value of 4.5 or less, a nonionic substance, and water, wherein: (I) the treatment liquid has a pH value of 1.5 to 5.5, (II) the nonionic substance has a weight-average molecular weight of 300 or more but less than 5,000, and (III) a difference in solubility parameter (SP value) between a fundamental skeleton part of the organic acid excluding its acid group and the nonionic substance is 0.01 to 0.75.

Abstract: It is an object to provide a liquid composition for ink jet which contains at least an organic acid having an acid dissociation constant pKa of 4.5 or less, a water-soluble solvent, and water, further including at least one of compounds selected from the following group, and this is utilized for an ink set for ink jet, an ink jet recording method and an ink jet recording apparatus, (a): a polyvalent metallic salt having an amount of addition to the organic acid which is equal to or more than 0.01 and is less than 1 in a mole ratio (the polyvalent metallic salt/organic acid); and (b): an organic amine compound having an amount of addition to the organic acid which is equal to or more than 0.1 and is equal to or less than 0.9 in a mole ratio (an organic amine compound/organic acid).

Abstract: An ink jet recording apparatus is provided with a recording head that ejects ink droplets, an ink tank that supplies ink to the recording head, a waste ink recovering mechanism that recovers ink droplets ejected from the recording head as waste ink, a waste-ink tank, which is connected to the waste-ink recovering mechanism and stores the waste ink, a diluent tank which is communicated with the waste-ink tank and accommodates a diluent that dilutes the waste ink, and at least one of diluent supplier, that is, one of a first diluent supplier which supplies the diluent in the diluent tank to the waste-ink tank to make the conductivity of the waste ink in the waste-ink tank substantially the same as the conductivity of the ink stored in the ink tank and a second diluent supplier which supplies the diluent in the diluent tank to the waste-ink tank to make the specific gravity of the waste ink in the waste-ink tank substantially the same as the specific gravity of the ink stored in the ink tank.

Abstract: An inkjet ink includes at least colorant particles, a water-soluble organic solvent, and water, wherein each of the colorant particles has a core particle and a coating layer formed around it or adsorbed particles on the surface thereof and the core particle contains a resin material having a glass transition temperature (Tg) of 75° C. or lower.

Abstract: The invention provides an ink set for ink-jet recording that is able to form an image having a sufficient optical density and causing no feathering and intercolor bleed within a short period of time while being excellent in reliability of the maintenance unit. The ink set comprises at least a liquid (a) containing a colorant, water soluble solvent and water; a liquid (b) containing a pH adjusting agent, water soluble solvent and water; and a liquid (c). The ink set satisfies any one of the conditions in the first embodiment: (i) the colorant is anionic, (ii) the liquid (b) has a pH of not higher than 6.5, (iii) the liquid (c) has a pH of not lower than 8.0, and (iv) the mixed liquid of the liquid (b) and the liquid (c) in a mass ratio of 1:1 has a pH of not lower than 7; or the second embodiment: (i) the colorant is cationic, (ii) the liquid (b) has a pH of not lower than 8.5, (iii) the liquid (c) has a pH of not higher than 6.

Abstract: The invention provides a liquid composition for ink jet recording. The liquid composition contains an organic acid having a neutralization degree of 40 to 100%, a water-soluble organic solvent, water, and two or more kinds of positive ions including lithium ions. The content of the lithium ions with respect to the total mol number of the positive ions is about 20 to about 95 mol %. The invention also provides an ink set for ink jet recording that contains an ink including a coloring material, a water-soluble solvent, and water, and the liquid composition, and an ink jet recording method and an ink jet recording apparatus where the ink set is used.

Abstract: The present invention provides an ink comprising at least a pigment, water, a water-soluble organic solvent, a lithium ion and one or more of cation other than the lithium ion, which can be applied particularly favorably for an inkjet method; an ink set at least comprises the ink and/or a processing solution containing at least an aggregating agent; a recording method and a recording device using the ink set in which the ink and the processing solution are applied so as to contact with each other to form an image onto a recording medium.

Abstract: The present invention provides an ink set for ink jet recording using at least two kinds of liquids. The first liquid contains at least a colorant, a water soluble solvent and water, and the second liquid contains at least a compound represented by the following general formula (1), a water soluble solvent and water.

Abstract: An ink set for ink jet using at least 3 or more of liquids, wherein the first liquid contains a colorant, a water soluble solvent and water, the second liquid contains a coagulant which coagulates components constituting the first liquid, a water soluble solvent and water, and the third liquid contains a compound capable of forming a chelate structure with the coagulant in the second liquid, a water soluble solvent and water; an ink jet recording method using the ink set; and an ink jet recording apparatus equipped with a recording head which injects the fore-mentioned ink set for ink jet from the recording head.