An inkjet ink which can sufficiently suppress photofading of printed images and has good lightfastness, and to provide a tablet including a printed part that is printed using the inkjet ink. The inkjet ink contains Blue No. 1 as a food dye, a disaccharide whose solubility in 100 ml of water at 20° C. is in the range of 20 g or more and 39 g or less as a fixing agent, and a solvent containing water and at least one of propylene glycol and ethanol.

An edible inkjet ink which can sufficiently suppress photodiscoloration or photofading of printed images and has good lightfastness, and to provide a tablet including a printed part that is printed using the edible inkjet ink. The edible inkjet ink contains Red No. 3, and hydroxy acid salt having two or more carboxyl groups.

An edible inkjet ink which can sufficiently suppress photodiscoloration or photofading of printed images and has good lightfastness, and to provide a tablet including a printed part that is printed using the edible inkjet ink. The edible inkjet ink contains Red No. 3, and hydroxy acid salt having two or more carboxyl groups.

An ink composition contains a first dye represented by formula (I)

##STR00001##

and a second dye represented by formula (II).

##STR00002##

Provided is an ink jet recording ink containing a near-infrared absorbing colorant represented by Formula 1, a polymerizable monomer, a polymerization initiator, and a dispersant, in which a content of the polymerizable monomer is 50% by mass or more with respect to a total amount of the ink jet recording ink, and a difference between an SP value of the polymerizable monomer and an SP value of the dispersant is 3.8 MPa.sup.1/2 to 16.0 MPa.sup.1/2. Also provided is an ink jet recording method.

##STR00001##

The description of a ring A, a ring B, X.sup.A, X.sup.B, G.sup.A, G.sup.B, kA, and kB in Formula 1 will not be repeated.

Provided is an ink jet recording ink containing a near-infrared absorbing colorant represented by Formula 1, a polymerizable monomer, a polymerization initiator, and a dispersant, in which a content of the polymerizable monomer is 50% by mass or more with respect to a total amount of the ink jet recording ink, and a difference between an SP value of the polymerizable monomer and an SP value of the dispersant is 3.8 MPa.sup.1/2 to 16.0 MPa.sup.1/2. Also provided is an ink jet recording method.

##STR00001##

The description of a ring A, a ring B, X.sup.A, X.sup.B, G.sup.A, G.sup.B, kA, and kB in Formula 1 will not be repeated.

Non-aqueous ink composition for liquid ink jet printing including: a vehicle comprising one or more organic solvent(s) liquid at ambient temperature, or one or more organic compound(s) solid at ambient temperature and liquid at the projection temperature; one or more dye(s) and/or pigment(s); a binder, comprising at least one binding resin consisting of a copolymer of vinylidene chloride and of at least one other monomer, in solution at ambient temperature in the organic solvent(s) or in solution at the projection temperature in the organic compound(s). A method for marking substrates, supports or objects includes projection onto the substrates, supports or objects of the ink composition by a liquid ink jet printing technique. A substrate, support or object, particularly flexible substrate, is provided with a marking obtained by drying and/or absorption of the composition.

Non-aqueous ink composition for liquid ink jet printing including: a vehicle comprising one or more organic solvent(s) liquid at ambient temperature, or one or more organic compound(s) solid at ambient temperature and liquid at the projection temperature; one or more dye(s) and/or pigment(s); a binder, comprising at least one binding resin consisting of a copolymer of vinylidene chloride and of at least one other monomer, in solution at ambient temperature in the organic solvent(s) or in solution at the projection temperature in the organic compound(s). A method for marking substrates, supports or objects includes projection onto the substrates, supports or objects of the ink composition by a liquid ink jet printing technique. A substrate, support or object, particularly flexible substrate, is provided with a marking obtained by drying and/or absorption of the composition.

A composition including a disperse dye and an aqueous carrier having a first polyol and a second polyol having at least 5 carbon has atoms, wherein the composition has a color fastness to water of at least 3 according to International Organization for Standardization test ISO 105-EO1:2010 when used in direct inkjet printing on a ready-to-print polyester textile.

A composition including a disperse dye and an aqueous carrier having a first polyol and a second polyol having at least 5 carbon has atoms, wherein the composition has a color fastness to water of at least 3 according to International Organization for Standardization test ISO 105-EO1:2010 when used in direct inkjet printing on a ready-to-print polyester textile.