Provided is an aqueous in ink with which the granularity of an ink coating caused in printing on a less-ink-absorbent or non-ink-absorbent recording medium is reduced while sufficient image fastness is achieved even printing on an ink-absorbent recording medium. The present invention relates to an ague-gas ink composition for use in an inkjet recording method. The aqueous ink composition contains an aqueous medium, a pigment, and a dye, and a combination of the pigment and the dye is a predetermined combination.

Provided is an aqueous in ink with which the granularity of an ink coating caused in printing on a less-ink-absorbent or non-ink-absorbent recording medium is reduced while sufficient image fastness is achieved even printing on an ink-absorbent recording medium. The present invention relates to an ague-gas ink composition for use in an inkjet recording method. The aqueous ink composition contains an aqueous medium, a pigment, and a dye, and a combination of the pigment and the dye is a predetermined combination.

Provided are an ink jet recording ink containing a squarylium dye represented by Formula 1, polymerizable compounds, a dispersant, and a synergist having at least one group selected from the group consisting of a carboxy group and a sulfo group and at least one ring selected from the group consisting of an aromatic ring and a heteroaromatic ring, and an image recording method:

##STR00001## in Formula 1, a ring A and a ring B each independently represent an aromatic ring or a heteroaromatic ring, X.sup.A and X.sup.B each independently represent a monovalent substituent, G.sup.A and G.sup.B each independently represent a monovalent substituent, kA represents an integer of 0 to nA, and kB represents an integer of 0 to nB. nA represents the maximum number of G.sup.As capable of being bonded to the ring A, and nB represents the maximum number of G.sup.Bs capable of being bonded to the ring B.

Provided are an ink jet recording ink containing a squarylium dye represented by Formula 1, polymerizable compounds, a dispersant, and a synergist having at least one group selected from the group consisting of a carboxy group and a sulfo group and at least one ring selected from the group consisting of an aromatic ring and a heteroaromatic ring, and an image recording method:

##STR00001## in Formula 1, a ring A and a ring B each independently represent an aromatic ring or a heteroaromatic ring, X.sup.A and X.sup.B each independently represent a monovalent substituent, G.sup.A and G.sup.B each independently represent a monovalent substituent, kA represents an integer of 0 to nA, and kB represents an integer of 0 to nB. nA represents the maximum number of G.sup.As capable of being bonded to the ring A, and nB represents the maximum number of G.sup.Bs capable of being bonded to the ring B.

A fluorescent oxygen sensing ink includes at least one organic solvent, at least one polymer binder disposed in the organic solvent, and an oxygen-sensitive fluorescent dye disposed in the organic solvent. The oxygen-sensitive fluorescent dye and the at least one polymer can interact to form a moisture-resistant film. The fluorescent oxygen sensing ink can be incorporated into an oxygen sensing wound dressing.

ink includes water, an alcohol having a boiling point of 240 degrees C. or lower, and an infrared absorbent, wherein the alcohol accounts for 5.0 percent by mass or more of the total amount of the ink and the ink is free of an alcohol having a boiling point higher than 240 degrees C.

A digital printed fabric includes a base cloth and a digital printing ink disposed on the base cloth, and a manufacturing method for the digital printing ink includes the following steps. A first thermal process including mixing a dye, a crosslinking agent, and a polyol is performed, such that a polymer dye is formed, in which a reaction temperature of the first thermal process is between 70° C. and 90° C. A second thermal process including mixing the polymer dye and an aqueous bridging agent is performed, such that a first mixture is formed, in which a reaction temperature of the second thermal process is between 90° C. and 120° C. A third thermal process including mixing the first mixture and a chain extender is performed, such that the digital printing ink is formed, in which a reaction temperature of the third thermal process is between 120° C. and 150° C.

A digital printed fabric includes a base cloth and a digital printing ink disposed on the base cloth, and a manufacturing method for the digital printing ink includes the following steps. A first thermal process including mixing a dye, a crosslinking agent, and a polyol is performed, such that a polymer dye is formed, in which a reaction temperature of the first thermal process is between 70° C. and 90° C. A second thermal process including mixing the polymer dye and an aqueous bridging agent is performed, such that a first mixture is formed, in which a reaction temperature of the second thermal process is between 90° C. and 120° C. A third thermal process including mixing the first mixture and a chain extender is performed, such that the digital printing ink is formed, in which a reaction temperature of the third thermal process is between 120° C. and 150° C.

A first ink composition includes: water; a water-soluble organic solvent; and a color developing agent. The color developing agent includes a pH indicator. The water-soluble organic solvent includes at least one water-soluble organic solvent having a SP value of 16 or less and 11 or more. An amount of the water-soluble organic solvent having a SP value of 16 or less and 11 or more in the first ink composition is 15 wt % or more. A second ink composition includes: water; a water-soluble organic solvent; and a color developing agent. The color developing agent includes a pH indicator. The water-soluble organic solvent includes at least one water-soluble organic solvent having a SP value of 16 or less. An amount of the water-soluble organic solvent having a SP value of 16 or less in the second ink composition is 15 wt % or more. The second ink composition is a water-based ink for ink-jet recording.

A first ink composition includes: water; a water-soluble organic solvent; and a color developing agent. The color developing agent includes a pH indicator. The water-soluble organic solvent includes at least one water-soluble organic solvent having a SP value of 16 or less and 11 or more. An amount of the water-soluble organic solvent having a SP value of 16 or less and 11 or more in the first ink composition is 15 wt % or more. A second ink composition includes: water; a water-soluble organic solvent; and a color developing agent. The color developing agent includes a pH indicator. The water-soluble organic solvent includes at least one water-soluble organic solvent having a SP value of 16 or less. An amount of the water-soluble organic solvent having a SP value of 16 or less in the second ink composition is 15 wt % or more. The second ink composition is a water-based ink for ink-jet recording.