An aqueous sacrificial coating composition for an image transfer member in an aqueous ink imaging system is provided. The sacrificial coating composition may include at least one polymer, at least one selected from (i) at least one chain extender, or (ii) a reactive elastomeric latex, wherein the at least one chain extender comprises a species capable of linking linear chains or chain segments of the reactive elastomeric latex, at least one hygroscopic plasticizer, and at least one surfactant.

An aqueous sacrificial coating composition for an image transfer member in an aqueous ink imaging system is provided. The sacrificial coating composition may include at least one polymer, at least one selected from (i) at least one chain extender, or (ii) a reactive elastomeric latex, wherein the at least one chain extender comprises a species capable of linking linear chains or chain segments of the reactive elastomeric latex, at least one hygroscopic plasticizer, and at least one surfactant.

Water based, energy curable ink jet compositions that have good insulating properties are described herein. The inventive water based energy curable ink jet compositions include a water soluble or water dispersible component polymerizable by free radical polymerization upon exposure to polymerizing radiation, wherein the cured ink jet compositions have good insulating properties, exhibited for example, by its breakdown voltage. Also described are electronic devices including ink jet-printed layers of the ink jet compositions.

Provided is an ink jet recording method capable of recording a high-quality image that is less liable to cause blocking and generate a scratch caused by tightening and that is free of unevenness even when a recording medium having been subjected to image recording is wound up into a roll. The ink jet recording method is a method of recording an image on a roll of recording medium with use of an aqueous ink and an aqueous reaction liquid. The ink jet recording method includes: a reaction liquid applying step of applying the reaction liquid to the recording medium; an ink applying step of applying the aqueous ink to the recording medium; a drying step of drying the aqueous ink by applying hot air; a cooling step of decreasing the surface temperature of the recording medium; and a wind-up step of winding up the cooled recording medium into a roll.

Provided is an ink jet recording method capable of recording a high-quality image that is less liable to cause blocking and generate a scratch caused by tightening and that is free of unevenness even when a recording medium having been subjected to image recording is wound up into a roll. The ink jet recording method is a method of recording an image on a roll of recording medium with use of an aqueous ink and an aqueous reaction liquid. The ink jet recording method includes: a reaction liquid applying step of applying the reaction liquid to the recording medium; an ink applying step of applying the aqueous ink to the recording medium; a drying step of drying the aqueous ink by applying hot air; a cooling step of decreasing the surface temperature of the recording medium; and a wind-up step of winding up the cooled recording medium into a roll.

Herein is described a latex polymer derived from a composition comprising a cycloaliphatic monomer and an aromatic monomer, wherein the cycloaliphatic monomer comprises a cycloaliphatic (meth)acrylate monomer or a cycloaliphatic (meth)acrylamide monomer and the aromatic monomer comprises an aromatic (meth)acrylate monomer or an aromatic (meth)acrylamide monomer. Also described is an inkjet ink composition comprising the latex polymer.

The present invention relates to a water-based ink that exhibits excellent ejection properties, and can be prevented from suffering from reduction in a dot size of the ink during a drying step thereof even when printed on a low-water absorbing recording medium, and is capable of obtaining printed characters or images having excellent uniformity, as well as an ink-jet printing method using the water-based ink. The water-based ink includes a pigment, a water-insoluble polymer, an acetylene glycol-based nonionic surfactant (A) having HLB of not less than 0 and not more than 5, a nonionic surfactant (B) having HLB of not less than 6 and not more than 20, a polyether-modified silicone (C) having a kinematic viscosity of not less than 30 mm.sup.2/s and not more than 190 mm.sup.2/s as measured at 25 C. and an organic solvent (D), in which a weighted mean value of a boiling point of the organic solvent (D) is not lower than 150 C. and not higher than 230 C.

The present invention relates to a water-based ink that exhibits excellent ejection properties, and can be prevented from suffering from reduction in a dot size of the ink during a drying step thereof even when printed on a low-water absorbing recording medium, and is capable of obtaining printed characters or images having excellent uniformity, as well as an ink-jet printing method using the water-based ink. The water-based ink includes a pigment, a water-insoluble polymer, an acetylene glycol-based nonionic surfactant (A) having HLB of not less than 0 and not more than 5, a nonionic surfactant (B) having HLB of not less than 6 and not more than 20, a polyether-modified silicone (C) having a kinematic viscosity of not less than 30 mm.sup.2/s and not more than 190 mm.sup.2/s as measured at 25 C. and an organic solvent (D), in which a weighted mean value of a boiling point of the organic solvent (D) is not lower than 150 C. and not higher than 230 C.

Disclosed herein are inkjet ink compositions comprising: at least one pigment having attached at least one organic group having a calcium index value greater than a calcium index value of 1,2,3-benzene tricarboxylic acid; at least one acrylic polymer having an acid number of at least 150 KOH/g and a weight average molecular weight ranging from 1,000 to 15,000, wherein the at least one acrylic polymer is at least partially neutralized with a base having the following structure: wherein: A is a C.sub.2-C.sub.12 alkyl, R.sup.1 is selected from H, C.sub.1-C.sub.12 alkyl, an amine having the formula NR.sup.3R.sup.4, and a guanidine residue having the formula N(R.sup.5)C(?NH)N(R.sup.6)(R.sup.7), wherein R.sub.3 to R.sup.7 are independently selected from H and C.sub.1-C.sub.12 alkyl, and R.sup.2 is selected from H, C.sub.1-C.sub.12 alkyl, and an acid group. The inkjet ink composition further comprises an aqueous liquid medium. ##STR00001##

Disclosed herein are inkjet ink compositions comprising: at least one pigment having attached at least one organic group having a calcium index value greater than a calcium index value of 1,2,3-benzene tricarboxylic acid; at least one acrylic polymer having an acid number of at least 150 KOH/g and a weight average molecular weight ranging from 1,000 to 15,000, wherein the at least one acrylic polymer is at least partially neutralized with a base having the following structure: wherein: A is a C.sub.2-C.sub.12 alkyl, R.sup.1 is selected from H, C.sub.1-C.sub.12 alkyl, an amine having the formula NR.sup.3R.sup.4, and a guanidine residue having the formula N(R.sup.5)C(?NH)N(R.sup.6)(R.sup.7), wherein R.sub.3 to R.sup.7 are independently selected from H and C.sub.1-C.sub.12 alkyl, and R.sup.2 is selected from H, C.sub.1-C.sub.12 alkyl, and an acid group. The inkjet ink composition further comprises an aqueous liquid medium. ##STR00001##