There is provided a water-based ink set for ink-jet recording, including: a water-based black ink containing a self-dispersible pigment, a water-soluble organic solvent of which vapor pressure is less than 1 Pa, and water; water-based color inks of two or more colors each containing a color pigment, a resin dispersant, a water-soluble organic solvent of which vapor pressure is less than 1 Pa, and water, wherein an average value of blending amounts of the water-soluble organic solvents in all of the water-based inks constituting the water-based ink set is in a range of 15% by weight to 35% by weight, and the water-based ink set satisfies the following condition X and condition Y, condition X: CK0.6 condition Y: A1.5.

There is provided a water-based ink set for ink-jet recording, including: a water-based black ink containing a self-dispersible pigment, a water-soluble organic solvent of which vapor pressure is less than 1 Pa, and water; water-based color inks of two or more colors each containing a color pigment, a resin dispersant, a water-soluble organic solvent of which vapor pressure is less than 1 Pa, and water, wherein an average value of blending amounts of the water-soluble organic solvents in all of the water-based inks constituting the water-based ink set is in a range of 15% by weight to 35% by weight, and the water-based ink set satisfies the following condition X and condition Y, condition X: CK0.6 condition Y: A1.5.

An inkjet recording ink, including: water; a water-soluble solvent; a pigment; and a phosphate group-containing copolymer, wherein the phosphate group-containing copolymer includes a structural unit represented by the following general formula (1) and a structural unit represented by the following general formula (2): ##STR00001##
wherein, in the general formula (1), R.sup.1 represents either of a hydrogen atom and a methyl group; and M.sup.+ represents any of an alkali metal ion, an organic amine ion and a hydrogen ion, one-half or more of the M.sup.+ in the copolymer is an alkali metal ion or an organic amine, and the remainder is a hydrogen ion; ##STR00002##
wherein, in the general formula (2), R.sup.2 represents either of a hydrogen atom and a methyl group.

An inkjet recording ink, including: water; a water-soluble solvent; a pigment; and a phosphate group-containing copolymer, wherein the phosphate group-containing copolymer includes a structural unit represented by the following general formula (1) and a structural unit represented by the following general formula (2): ##STR00001##
wherein, in the general formula (1), R.sup.1 represents either of a hydrogen atom and a methyl group; and M.sup.+ represents any of an alkali metal ion, an organic amine ion and a hydrogen ion, one-half or more of the M.sup.+ in the copolymer is an alkali metal ion or an organic amine, and the remainder is a hydrogen ion; ##STR00002##
wherein, in the general formula (2), R.sup.2 represents either of a hydrogen atom and a methyl group.

Provided is an ink jet recording apparatus including: a base metal pigment ink composition; and a first nozzle that ejects the base metal pigment ink composition, in which the base metal pigment ink composition contains a flat base metal pigment of which a 50% average particle diameter D50 is in a range of 100 nm to 1 m, and an organic compound of which a surface tension at 20 C. is 35 mN/m or greater, and an ejection interval T1 after the base metal pigment ink composition is ejected from the first nozzle and before the base metal pigment ink composition is ejected again from the first nozzle is within 100 s.

Provided is an ink jet recording apparatus including: a base metal pigment ink composition; and a first nozzle that ejects the base metal pigment ink composition, in which the base metal pigment ink composition contains a flat base metal pigment of which a 50% average particle diameter D50 is in a range of 100 nm to 1 m, and an organic compound of which a surface tension at 20 C. is 35 mN/m or greater, and an ejection interval T1 after the base metal pigment ink composition is ejected from the first nozzle and before the base metal pigment ink composition is ejected again from the first nozzle is within 100 s.

The present disclosure provides binary ink sets and related methods. In one example, a binary ink set for printing a non-Newtonian inkjet image can comprise a gelator inkjet ink comprising a gelator in an amount ranging from 0.1% to 10% by weight based on the total weight of the gelator ink and an organic solvent; and a colorant inkjet ink comprising a colorant and an organic solvent. The gelator inkjet ink and the colorant inkjet ink can be configured to form a structured network upon printing where the non-Newtonian inkjet ink has a first dynamic viscosity ranging from 25 cps to 10,000 cps at a first state and a second dynamic viscosity ranging from 1 cps to 50 cps at a second state, measured at 25 C.

The present disclosure provides binary ink sets and related methods. In one example, a binary ink set for printing a non-Newtonian inkjet image can comprise a gelator inkjet ink comprising a gelator in an amount ranging from 0.1% to 10% by weight based on the total weight of the gelator ink and an organic solvent; and a colorant inkjet ink comprising a colorant and an organic solvent. The gelator inkjet ink and the colorant inkjet ink can be configured to form a structured network upon printing where the non-Newtonian inkjet ink has a first dynamic viscosity ranging from 25 cps to 10,000 cps at a first state and a second dynamic viscosity ranging from 1 cps to 50 cps at a second state, measured at 25 C.

A jet ink composition, a jet ink coating method and a resulting jet ink coated article are all predicated upon the jet ink composition which includes in addition to a particulate pigment material and a solvent composition a resin composition. The resin composition includes an uncured silicone resin, an uncured epoxy resin and an uncured melamine resin. Upon thermal cure the uncured resin composition forms a cured resin composition with superior adhesion to substrates such as but not limited to glass substrates, ceramic substrates and metal oxide substrates.

A jet ink composition, a jet ink coating method and a resulting jet ink coated article are all predicated upon the jet ink composition which includes in addition to a particulate pigment material and a solvent composition a resin composition. The resin composition includes an uncured silicone resin, an uncured epoxy resin and an uncured melamine resin. Upon thermal cure the uncured resin composition forms a cured resin composition with superior adhesion to substrates such as but not limited to glass substrates, ceramic substrates and metal oxide substrates.