An aqueous inkjet ink composition including a pigment, an alkali-soluble resin, a surfactant, a water-soluble solvent, and water. The water-soluble solvent contains a solvent A having a boiling point of 100° C. or more and 200° C. or less at 1 atm and 4 or less carbon atoms and 2 or more hydroxy groups in a molecule, and a solvent B having a boiling point of 100° C. or more and 200° C. or less at 1 atm and 4 or more and 10 or less carbon atoms, 1 or less hydroxy groups, and 1 or more methoxy groups in a molecule, and the aqueous inkjet ink composition has a total percentage of the solvent a and the solvent b of 20% by mass or more and 50% by mass or less. The aqueous inkjet ink composition has good storage stability, ejection stability, and drying property of the coating film.

An ink jet ink composition includes a self-dispersible pigment; an alcohol having 4 carbon atoms or less; an asymmetric alkyl ether; and water, a content of the alcohol with respect to a total mass of the ink jet ink composition is 0.5 to 15 percent by mass, and a content of the water with respect to the total mass of the ink jet ink composition is 10 to 40 percent by mass.

A method for manufacturing an electromagnetic shielding film of reduced thickness and a simplified manufacturing process includes forming a conductive ink layer by inkjet printing, on a component to be shielded, forming an insulative ink layer on the conductive ink layer by inkjet printing, and sintering the conductive ink layer and the insulative ink layer to form an electromagnetic shielding layer and an insulative layer, thereby obtaining the electromagnetic shielding film.

The present invention relates to a modified colorant comprising a colorant having at least one polymer attached or adsorbed thereto. The polymer comprises at least one functional group, and various embodiments of the functional group are disclosed. For each of these embodiments, preferably the functional group has a defined calcium index value. Also disclosed are various uses for these modified colorants, including inkjet ink compositions. Thus, the present invention further relates to an inkjet ink composition comprising a) a liquid vehicle, b) at least one colorant, and c) at least one polymer comprising at least one functional group as described herein.

The present invention relates to a modified colorant comprising a colorant having at least one polymer attached or adsorbed thereto. The polymer comprises at least one functional group, and various embodiments of the functional group are disclosed. For each of these embodiments, preferably the functional group has a defined calcium index value. Also disclosed are various uses for these modified colorants, including inkjet ink compositions. Thus, the present invention further relates to an inkjet ink composition comprising a) a liquid vehicle, b) at least one colorant, and c) at least one polymer comprising at least one functional group as described herein.

A method for manufacturing decorative surfaces includes the steps of a) inkjet printing a color pattern on a paper substrate with one or more aqueous inkjet inks of an aqueous inkjet ink set; and thereafter b) impregnating the paper substrate with a thermosetting resin, wherein the aqueous inkjet ink set includes a cyan aqueous inkjet ink containing a copper phthalocyanine pigment; a red aqueous inkjet ink containing a pigment C.I Pigment Red 254 or a mixed crystal thereof; a yellow aqueous inkjet ink containing a pigment C.I Pigment Yellow 151 or a mixed crystal thereof; and a black aqueous inkjet ink containing a carbon black pigment; with the proviso that the aqueous inkjet inks do not include a polymer latex binder; and that the paper substrate includes one or more ink receiving layers for improving the image quality of the aqueous inkjet inks jetted thereon.

A method for manufacturing decorative surfaces includes the steps of a) inkjet printing a color pattern on a paper substrate with one or more aqueous inkjet inks of an aqueous inkjet ink set; and thereafter b) impregnating the paper substrate with a thermosetting resin, wherein the aqueous inkjet ink set includes a cyan aqueous inkjet ink containing a copper phthalocyanine pigment; a red aqueous inkjet ink containing a pigment C.I Pigment Red 254 or a mixed crystal thereof; a yellow aqueous inkjet ink containing a pigment C.I Pigment Yellow 151 or a mixed crystal thereof; and a black aqueous inkjet ink containing a carbon black pigment; with the proviso that the aqueous inkjet inks do not include a polymer latex binder; and that the paper substrate includes one or more ink receiving layers for improving the image quality of the aqueous inkjet inks jetted thereon.

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).

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).

A recording method includes: ejecting aqueous ink to a surface of a recording medium by an ejection head, the aqueous ink containing a colorant, polymer particles having a glass-transition temperature Tg of 35° C. to 65° C., and a solvent containing water and an aqueous organic solvent, the aqueous ink having a viscosity ratio (V35/Vi) of a viscosity V35 that is obtained when the aqueous ink is heated at 35° C. for 30 minutes to an initial viscosity Vi of the aqueous ink being lower than 2.0 and a viscosity ratio (V65/Vi) of a viscosity V65 that is obtained when the aqueous ink is heated at 65° C. for 30 minutes to Vi being 8.0 to 20.0; and drying the aqueous ink ejected to the recording medium. The head temperature Th of the ejection head, the glass-transition temperature Tg, and the drying temperature Td satisfy an expression: Th<Tg<Td.