Ink-jet recording ink, ink-jet recording ink set, ink cartridge, ink-jet printer, and ink-jet printing method

An ink-jet recording ink set, comprising:

• a black ink;
• and
• at least one color ink,
• wherein the black ink comprises;
• a self-dispersing type pigment,
• at least one wetting agent, as a first hydroxy compound, selected from the group consisting of glycerin, 1,3-butanediol, triethylene glycol, 1,6-hexanediol, propylene glycol, 1,5-pentanediol, diethylene glycol, dipropylene glycol, trimethylol propane, and trimethylol ethane,
• one of selected from the consisting of:
• a polyol, as a second hydroxy compound, having 8 to 11 carbon atoms, and
• a glycol ether having 8 to 11 carbon atoms,
• at least one of an anionic surfactant, a nonionic surfactant, and an amphoteric surfactant,
• a water-soluble organic solvent, and
• water,
• wherein the black ink has a viscosity of 5 mPa.sec or more at 25° C.,
• wherein the color ink comprises;
• a water dispersion which is a polymer emulsion which comprises a polymer fine particle containing a coloring material, the coloring material being insoluble in water or being unlikely to dissolve in the water,
• at least one wetting agent, as a first hydroxy compound, selected from the group consisting of glycerin, 1,3-butanediol, triethylene glycol, 1,6-hexanediol, propylene glycol, 1,5-pentanediol, diethylene glycol, dipropylene glycol, trimethylol propane, and trimethylol ethane,
• one selected from the group consisting of:
• a polyol, as a second hydroxy compound, having 8 to 11 carbon atoms,
• and
• a glycol ether having 8 to 11 carbon atoms,
• a water-soluble organic solvent,
• water,
• at least one of an anionic surfactant, a nonionic surfactant, and an amphoteric surfactant, and
• at least one fluorine surfactant,
• wherein the color ink has a viscosity of 5 mPa.sec or more at 25° C.

An ink-jet printing method for ejecting an ink by applying an energy to an ink-jet recording ink,

• wherein the ink-jet recording ink comprises:
• a polymer emulsion which comprises a polymer fine particle containing a coloring material, the coloring material being insoluble in water or being unlikely to dissolve in the water;
• at least one wetting agent, as a first hydroxy compound, selected from the group consisting of glycerin, 1,3-butanediol, triethylene glycol, 1,6-hexanediol, propylene glycol, 1,5-pentanediol, diethylene glycol, dipropylene glycol, trimethylol propane, and trimethylol ethane;
• one selected from the group consisting of:
• a polyol, as a second hydroxy compound, having 8 to 11 carbon atoms, and
• a glycol ether having 8 to 11 carbon atoms;
• a water-soluble organic solvent;
• water;
• at least one of an anionic surfactant, a nonionic surfactant, and an amphoteric surfactant;
• and
• at least one fluorine surfactant,
• wherein the fluorine surfactant is the perfluroalkyl sulfonate expressed by the following formula A:
• wherein R1, R2, and R3 denote one of a perfluoro alkyl group and a fluorine atom, and M1 denotes any one of Li, Na, and K, and wherein the coloring material is a pigment
• wherein the ink-jet recording ink has a viscosity of 5 mPa.sec or more at 25° C.

An ink-jet printing method for ejecting an ink by applying an energy to an ink-jet recording ink set,

• wherein the ink-jet recording ink set comprises:
• a black ink;
• and
• at least one color ink,
• wherein the black ink comprises;
• a self-dispersing type pigment,
• at least one wetting agent, as a first hydroxy compound, selected from the group consisting of glycerin, 1,3-butanediol, triethylene glycol, 1,6-hexanediol, propylene glycol, 1,5-pentanediol, diethylene glycol, dipropylene glycol, trimethylol propane, and trimethylol ethane,
• one selected from the group consisting of:
• a polyol, as a second hydroxy compound, having 8 to 11 carbon atoms,
• and
• a glycol ether having 8 to 11 carbon atoms,
• at least one of an anionic surfactant, a nonionic surfactant, and an amphoteric surfactant,
• a water-soluble organic solvent, and
• water,
• wherein the black ink has a viscosity of 5 mPa.sec or more at 25° C.,
• wherein the color ink comprises;
• a water dispersion which is a polymer emulsion which comprises a polymer fine particle containing a coloring material, the coloring material being insoluble in water or being unlikely to dissolve in the water,
• at least one wetting agent, as a first hydroxy compound, selected from the group consisting of glycerin, 1,3-butanediol, triethylene glycol, 1,6-hexanediol, propylene glycol, 1,5-pentanediol, diethylene glycol, dipropylene glycol, trimethylol propane, and trimethylol ethane,
• one selected from the group consisting of:
• a polyol, as a second hydroxy compound, having 8 to 11 carbon atoms,
• and
• a glycol ether having 8 to 11 carbon atoms,
• a water-soluble organic solvent,
• water,
• at least one of an anionic surfactant, a nonionic surfactant, and an amphoteric surfactant, and
• at least one fluorine surfactant,
• wherein the color ink has a viscosity of 5 mPa.sec or more at 25° C.

An ink cartridge, comprising an ink receiver receiving therein an ink-jet recording ink,

• wherein the ink-set recording ink comprises:
• a polymer emulsion which comprises a polymer fine particle containing a coloring material, the coloring material being insoluble in water or being unlikely to dissolve in the water;
• at least one wetting agent, as a first hydroxy compound, selected from the group consisting of glycerin, 1,3-butanediol, triethylene glycol, 1,6-hexanediol, propylene glycol, 1,5-pentanediol, diethylene glycol, dipropylene glycol, trimethylol propane, and trimethylol ethane;
• one selected from group consisting of:
• a polyol, as a second hydroxy compound, having 8 to 11 carbon atoms, and
• a glycol ether having 8 to 11 carbon atoms;
• a water-soluble organic solvent;
• water;
• at least one of an anionic surfactant, a nonionic surfactant, and an amphoteric surfactant;
• and
• at least one fluorine surfactant,
• wherein the fluorine surfactant is the perfluoroalkyl sulfonate expressed by the following formula A:
• wherein R1, R2, and R3 denote one of a perfluoro alkyl group and a fluorine atom, and M1 denotes any one Li, Na, and K, and wherein the coloring material is a pigment and
• wherein the ink-jet recording ink has a viscosity of 5 mPa.sec or more at 25° C.

An ink cartridge, comprising an ink receiver receiving therein an ink-jet recording ink set,

• wherein the ink-jet recording ink set comprises:
• a black ink;
• and
• at least one color ink,
• wherein the black ink comprises;
• a self-dispersing type pigment,
• at least one wetting agent, as a first hydroxy compound, selected from the group consisting of glycerin, 1,3-butanediol, triethylene glycol, 1,6-hexanediol, propylene glycol, 1,5-pentanediol, diethylene glycol, dipropylene glycol, trimethylol propane, and trimethylol ethane,
• one selected from the group consisting of:
• a polyol, as a second hydroxy compound, having 8 to 11 carbon atoms,
• and
• a glycol ether having 8 to 11 carbon atoms,
• at least one of an anionic surfactant, a nonionic surfactant, and an amphoteric surfactant,
• a water-soluble organic solvent, and
• water,
• wherein the black ink has a viscosity of 5 mPa.sec or more at 25° C.,
• wherein the color ink comprises;
• a water dispersion which is a polymer emulsion which comprises a polymer fine particle containing a coloring material, the coloring material being insoluble in water or being unlikely to dissolve in the water;
• at least one wetting agent, as a first hydroxy compound, selected from the group consisting of glycerin, 1,3-butanediol, triethylene glycol, 1,6-hexanediol, propylene glycol, 1,5-pentanediol, diethylene glycol, dipropylene glycol, trimethylol propane, and trimethylol ethane,
• one selected from the group consisting of:
• a polyol, as a second hydroxy compound, having 8 to 11 carbon atoms,
• and
• a glycol ether having 8 to 11 carbon atoms,
• a water-soluble organic solvent,
• water,
• at least one of an anionic surfactant, a nonionic surfactant,
• and an amphoteric surfactant, and
• at least one fluorine surfactant,
• wherein the color ink has a viscosity of 5 mPa.sec or more at 25° C.

An ink-jet printer, comprising:

• one of an ink receiver and an ink cartridge receiving therein:
• an ink-jet recording ink;
• and
• one of an ink-jet recording head and a record unit which drops and ejects the ink by an action of an energy,
• wherein the ink-jet recording ink comprises:
• a polymer emulsion which comprises a polymer fine particle containing a coloring material, the coloring material being insoluble in water or being unlikely to dissolve in the water;
• at least one wetting agent, as a first hydroxy compound, selected from the group consisting of glycerin, 1,3-butanediol, triethylene glycol, 1,6-hexanediol, propylene glycol, 1,5-pentanediol, diethylene glycol, dipropylene glycol, trimethylol propane, and trimethylol ethane;
• one selected from the group consisting of:
• a polyol, as a second hydroxy compound, having 8 to 11 carbon atoms, and
• a glycol ether having 8 to 11 carbon atoms;
• a water-soluble organic solvent;
• water;
• at least one of an anionic surfactant, a nonionic surfactant, and an amphoteric surfactant;
• and
• at least one fluorine surfactant,
• wherein the fluorine surfactant is the perfluoroalkyl sulfonate expressed by the following formula A:
• wherein R1, R2, R3 denote one of a perfluoro alkyl group and a fluorine atom, and M1 denotes any one of Li, Na, and K, and
• wherein the ink-jet recording ink has a viscosity of 5 mPa.sec or more at 25° C.

An ink-jet printer, comprising:

• one of an ink receiver and an ink cartridge receiving therein:
• an ink-jet recording ink set;
• and
• one of an ink-jet recording head and a record unit which drops and ejects the ink by an action of an energy,
• wherein the ink-jet recording ink set comprises:
• a black ink;
• and
• at least one color ink,
• wherein the black ink comprises;
• a self-dispersing type pigment,
• at least one wetting agent, as a first hydroxy compound, selected from the group consisting of glycerin, 1,3-butanediol, triethylene glycol, 1,6-hexanediol, propylene glycol, 1,5-pentanediol, diethylene glycol, dipropylene glycol, trimethylol propane, and trimethylol ethane,
• one selected from the group consisting of:
• a polyol, as a second hydroxy compound, having 8 to 11 carbon atoms, and
• a glycol ether having 8 to 11 carbon atoms,
• at least one of an anionic surfactant, a nonionic surfactant, and an amphoteric surfactant,
• a water-soluble organic solvent, and
• water;
• wherein the black ink has a viscosity of 5 mPa.sec or more at 25° C.,
• wherein the color ink comprises;
• a water dispersion which is a polymer emulsion which comprises a polymer fine particle containing a coloring material, the coloring material being insoluble in water or being unlikely to dissolve in the water,
• at least one wetting agent, as a first hydroxy compound, selected from the group consisting of glycerin, 1,3-butanediol, triethylene glycol, 1,6-hexanediol, propylene glycol, 1,5-pentanediol, diethylene glycol, dipropylene glycol, trimethylol propane, and trimethylol ethane,
• one selected from the group consisting of:
• a polyol, as a second hydroxy compound, having 8 to 11 carbon atoms, and
• a glycol ether having 8 to 11 carbon atoms,
• a water-soluble organic solvent,
• water,
• at least one of an anionic surfactant, a nonionic surfactant, and an amphoteric surfactant, and
• at least one fluorine surfactant,
• wherein the color ink has a viscosity of 5 mPa.sec or more at 25° C.

A recorded article on which a recording is carried out by a printing method for ejecting an ink by applying an energy to an ink-jet recording ink,

• the ink-jet recording ink comprising:
• a polymer emulsion which comprises a polymer fine particle containing a coloring material, the coloring material being insoluble in water or being unlikely to dissolve in the water;
• at least one wetting agent, as a first hydroxy compound, selected from the group consisting of glycerin, 1,3-butanediol, triethylene glycol, 1,6-hexanediol, propylene glycol, 1,5-pentanediol, diethylene glycol, dipropylene glycol, trimethylol propane, and trimethylol ethane;
• one selected from the group consisting of:
• a polyol, as a second hydroxy compound, having 8 to 11 carbon atoms, and
• a glycol ether having 8 to 11 carbon atoms;
• a water-soluble organic solvent;
• water;
• at least one of an anionic surfactant, a nonionic surfactant, and an amphoteric surfactant;
• and
• at least one fluorine surfactant,
• wherein the fluorine surfactant is the perfluoroalkyl sulfonate expressed by the following formula:
• R1, R2, and R3 denote one of a perfluoro alkyl group and a fluorine atom, and M1 denotes any one Li, Na, and K, and wherein the coloring material is a pigment
• wherein the ink-jet recording ink has a viscosity of 5 mPa.sec or more at 25° C.

A recorded article on which a recording is carried out by a printing method for ejecting an ink by applying an energy to an ink-jet recording ink set,

• the ink-jet recording ink set comprising:
• a black ink;
• and
• at least one color ink,
• wherein the black ink comprises;
• a self-dispersing type pigment,
• at least one wetting agent, as a first hydroxy compound, selected from the group consisting of glycerin, 1,3-butanediol, triethylene glycol, 1,6-hexanediol, propylene glycol, 1,5-pentanediol, diethylene glycol, dipropylene glycol, trimethylol propane, and trimethylol ethane,
• one selected from the group consisting of:
• a polyol, as a second hydroxy compound, having 8 to 11 carbon atoms,
• and
• a glycol ether having 8 to 11 carbon atoms,
• at least one of an anionic surfactant, a nonionic surfactant, and an amphoteric surfactant;
• a water-soluble organic solvent, and
• water,
• wherein the black ink has a viscosity of 5 mPa.sec or more at 25° C.,
• wherein the color ink comprises;
• a water dispersion which is a polymer emulsion which comprises a polymer fine particle containing a coloring material, the coloring material being insoluble in water or being unlikely to dissolve in the water;
• at least one wetting agent, as a first hydroxy compound, selected from the group consisting of glycerin, 1,3-butanediol, triethylene glycol, 1,6-hexanediol, propylene glycol, 1,5-pentanediol, diethylene glycol, dipropylene glycol, trimethylol propane, and trimethylol ethane,
• one selected from the group consisting of:
• a polyol, as a second hydroxy compound, having 8 to 11 carbon atoms,
• and
• a glycol ether having 8 to 11 carbon atoms,
• a water-soluble organic solvent,
• water,
• at least one of an anionic surfactant, a nonionic surfactant, and an amphoteric surfactant, and
• at least one fluorine surfactant,
• wherein the fluorine surfactant is the perfluoroalkyl sulfonate expressed by the following formula A:
• wherein R1, R2, and R3 denote one of a perfluoro alkyl group and a fluorine atom, and M1 denotes any one of Li, Na, and K, and wherein the coloring material is a pigment and
• wherein the color ink has a viscosity of 5 mPa.sec or more at 25° C.