An oil-based inkjet ink is disclosed, that contains a pigment, a fatty acid ester-based solvent (A) having a viscosity of 5.0 mPa.Math.s or lower and a boiling point of 300° C. or higher but lower than 400° C., and a fatty acid ester-based solvent (B) having a viscosity of 10.0 mPa.Math.s or higher and a boiling point of 400° C. or higher.

An aqueous inkjet ink composition is disclosed and includes a dye based polymeric dispersant, an aqueous organic solvent, at least one additive and water for inkjet printing specific patterns on various texture products. The dye based polymeric dispersant is present in an amount of from 2 to 30 percent by weight of the total weight of the inkjet ink composition, the aqueous organic solvent is 15 to 65 percent by weigh, and the at least one additive less than 2 percent by weigh. The dye based polymeric dispersant, the aqueous organic solvent and the at least one additive are dissolved or dispersed in water. The present invention does not easily clog at printerhead nozzles and gets rid of a great deal of industrial waste water and a tedious and complex post treatment of water cleaning, thereby scaling down the manufacturing apparatus for digital fabric.

A non-aqueous ink composition for ink jet recording includes a pigment, a compound represented by General formula 1 below, and a phthalocyanine derivative provided with a polar group not having an amine structure, as a pigment dispersant for dispersing the pigment. The pigment is carbon black. The composition further includes an alkylene glycol monoalkyl ether: ##STR00001##
(wherein R.sup.1 indicates an alkyl group of 1 to 4 carbon atoms, and R.sup.2 and R.sup.3 each independently indicate a methyl group or an ethyl group).

An amine functional compound comprising i. least one segment consisting of at least one ether unit E and at least one ester unit, wherein the ether units and ester units are connected by an ether link or by an ester link, and wherein the sum of the number of ether units and ester units is at least three, and wherein the ether units and ester units are arranged in random order, and ii. at least one amine group ii. selected from a tertiary amine group, a salt of a tertiary amine group and a quaternary ammonium group, wherein the at least one segment is covalently linked to a polymerization starter moiety comprising the at least one amine group ii.

An amine functional compound comprising i. least one segment consisting of at least one ether unit E and at least one ester unit, wherein the ether units and ester units are connected by an ether link or by an ester link, and wherein the sum of the number of ether units and ester units is at least three, and wherein the ether units and ester units are arranged in random order, and ii. at least one amine group ii. selected from a tertiary amine group, a salt of a tertiary amine group and a quaternary ammonium group, wherein the at least one segment is covalently linked to a polymerization starter moiety comprising the at least one amine group ii.

The invention provides a magenta ink for inkjet which yields distinct images having high gloss and no density irregularities or voids upon inkjet printing onto low-absorption substrates, exhibits excellent discharge stability after long standby periods, and can provide excellent drying properties even during high-speed printing; and also provides an ink set that can suppress mixed color bleeding and achieve superior color reproducibility.

An ink set containing an inkjet ink and a treatment liquid, wherein the inkjet ink contains a pigment, a water-soluble organic solvent, a surfactant and water, the water-soluble organic solvent contains an alkyl diol (A) of 2 to 8 carbon atoms, the weighted average boiling point of the water-soluble organic solvent at one atmosphere is from 175 to 240° C., the surfactant contains an acetylenediol-based surfactant, the treatment liquid contains a coagulant, calcium nitrate is included as the coagulant in an amount of 6.8 to 20.8% by mass relative to the total mass of the treatment liquid, and the pH of the treatment liquid is from 2 to 11.

An ink set containing an inkjet ink and a treatment liquid, wherein the inkjet ink contains a pigment, a water-soluble organic solvent, a surfactant and water, the water-soluble organic solvent contains an alkyl diol (A) of 2 to 8 carbon atoms, the weighted average boiling point of the water-soluble organic solvent at one atmosphere is from 175 to 240° C., the surfactant contains an acetylenediol-based surfactant, the treatment liquid contains a coagulant, calcium nitrate is included as the coagulant in an amount of 6.8 to 20.8% by mass relative to the total mass of the treatment liquid, and the pH of the treatment liquid is from 2 to 11.

An ink set for ink-jet recording includes an achromatic color ink containing potassium ion and at least one of lithium ion and sodium ion; and a chromatic color ink containing at least one selected from the group consisting of: the potassium ion, the lithium ion and the sodium ion, wherein the ink set satisfies Condition (X): K.sub.a/(Li.sub.a+Na.sub.a+K.sub.a)>0.7, and Condition (Y): K.sub.c/(Li.sub.c+Na.sub.c+K.sub.c)<0.6.

An ink set for ink-jet recording includes an achromatic color ink containing potassium ion and at least one of lithium ion and sodium ion; and a chromatic color ink containing at least one selected from the group consisting of: the potassium ion, the lithium ion and the sodium ion, wherein the ink set satisfies Condition (X): K.sub.a/(Li.sub.a+Na.sub.a+K.sub.a)>0.7, and Condition (Y): K.sub.c/(Li.sub.c+Na.sub.c+K.sub.c)<0.6.