A polymeric dispersant including a copolymer comprising: a basic moiety; an alkyl group having from about 4 to about 40 carbon atoms; an aromatic group; and a steric hydrophilic group. An aqueous ink jet ink composition including the polymeric dispersant.

A printing method for printing a printing medium whose printed side will be laminated after being printed. The printing method includes a non-white ink application step of applying an aqueous non-white ink composition containing a non-white coloring material onto the printing medium, a white ink application step of applying an aqueous white ink composition containing a white coloring material onto the non-white ink composition on the printing medium, and a clear ink application step of applying a clear ink composition containing a resin onto the white ink composition on the printing medium.

An over-print varnish formulation is described. The formulation comprises a non-ionic polyurethane dispersion; a water-soluble polymer of M.sub.w less than 55,000; a wax having a particle size (d.sub.50) 200 nm or less; and a water-soluble solvent, and at least 20 wt % solids, based on the total weight of the formulation. A method of printing using the formulation, and a printed article are also described.

An over-print varnish formulation is described. The formulation comprises a non-ionic polyurethane dispersion; a water-soluble polymer of M.sub.w less than 55,000; a wax having a particle size (d.sub.50) 200 nm or less; and a water-soluble solvent, and at least 20 wt % solids, based on the total weight of the formulation. A method of printing using the formulation, and a printed article are also described.

An ink jet recording method performs recording on a recording medium using a white ink composition, a non-white ink composition, and a treatment liquid containing an aggregating agent, the method including: a treatment liquid adhesion step of adhering the treatment liquid to the recording medium to form a treatment liquid layer; a non-white ink adhesion step of adhering the non-white ink composition to the recording medium by ejection thereof from an ink jet head to form a non-white ink layer; and a white ink adhesion step of adhering the white ink composition to the recording medium by ejection thereof from an ink jet head to form a white ink layer. The recording medium has a region in which the non-white ink layer, the white ink layer, and the treatment liquid layer are overlapped with each other, at least one of the ink compositions contains resin particles and a water-soluble resin, and the water-soluble resin has a glass transition temperature higher than that of a resin of the resin particles.

Provided is an ink composition less likely to cause offset and sticking. Provided is a printed matter and a printing method using such ink composition. The ink composition includes a (meth) acrylic resin and a drying oil, the (meth)acrylic resin: containing at least 40% by weight or more of a structural unit derived from (meth)acryl monomer having a straight-chain alkyl group having 4 or more carbon atoms, branched alkyl group having 4 or more carbon atoms, or cyclic alkyl group having 4 or more carbon atoms (1); having a glass transition temperature of 63° C. to 180° C. (2); and having a weight-average molecular weight of 1000 to 80,000 (3).

Provided is an ink composition less likely to cause offset and sticking. Provided is a printed matter and a printing method using such ink composition. The ink composition includes a (meth) acrylic resin and a drying oil, the (meth)acrylic resin: containing at least 40% by weight or more of a structural unit derived from (meth)acryl monomer having a straight-chain alkyl group having 4 or more carbon atoms, branched alkyl group having 4 or more carbon atoms, or cyclic alkyl group having 4 or more carbon atoms (1); having a glass transition temperature of 63° C. to 180° C. (2); and having a weight-average molecular weight of 1000 to 80,000 (3).

An image forming method includes applying an ink for the first time to a recording medium to form an image and rolling up the recording medium in a roll form, wherein the recording medium is continuous paper, the ink includes water, an organic solvent, and a coloring material, and the image has a tackiness power of from 80 to 110 nN.

A printing method contains applying a processing fluid to a fabric and applying an ink to the fabric to which the processing fluid has been applied, wherein the ink contains a pigment, a resin having a cross-linkable functional group, a pH regulator, and at least one member selected from a block isocyanate compound, a carbodiimide compound, and a polymer having an oxazoline group.

The present invention relates to the field oxidative drying inks suitable for offset, letterpress and intaglio printing. In particular, it relates to oxidative drying inks for printing by an offset process, letterpress process or intaglio process on a non-porous substrate selected from the group consisting of polymer materials, composite materials, metals or metalized materials and combinations thereof, said oxidative drying ink comprising at least one oxidative drying varnish and one or more neutral manganese complex compounds.