An ink composition for ink jet recording is disclosed which contains a water soluble dye, polyhydric alcohol, and potassium carbonate in an aqueous medium.

An ink for ink-jet recording contains tripropylene glycol normal butyl ether or dipropylene glycol normal propyl ether, an acrylic polymer, a water-insoluble coloring agent, and water. The ink simultaneously satisfies the straight travel stability of ink droplets during the discharge with an ink-jet recording apparatus, the recovery performance upon introduction into a recording head of the ink-jet recording apparatus, the fixation performance of printed matters, and the drying performance after...

The present disclosure relates to an ink-jet ink set which, in spite of using a black ink including a black pigment, may form printed matter (e.g., images) with desirable fixability to glossy paper, color balance after fading (fading stability), and/or water resistance and/or ink-jet ink sets with desirable storage stability. An ink set may include a yellow dye ink including a yellow dye, a magenta dye ink including a magenta dye, a cyan dye ink including a cyan dye and a black ink. A black ink ...

An ink for ink-jet recording contains a copper phthalocyanine pigment as a colorant, and a benzotriazole compound. The ink further contains a metallic phthalocyanine compound having one or more counter ions, wherein about 2 mol % to about 20 mol % of the counter ions is ammonium ion and/or organic ammonium ion.

The present disclosure relates to an ink-jet ink set which, in spite of using a black ink including a black pigment, may display desirable storage stability and/or may form printed matter (e.g., images) with desirable rub fastness against a plain paper surface, color balance after fading (fading stability), and/or water resistance. An ink set may include a yellow dye ink including a yellow dye, a magenta dye ink including a magenta dye, a cyan dye ink including a cyan dye and a black ink, the bl...

The present disclosure relates to an ink-jet ink set which, in spite of using a black ink including a black pigment, may form printed matter (e.g., images) with desirable water resistance and/or color balance after fading (fading stability) and/or ink-jet ink sets with desirable storage stability. An ink set may include a yellow dye ink including a yellow dye, a magenta dye ink including a magenta dye, a cyan dye ink including a cyan dye and a black ink. A black ink may include a black pigment, ...

Disclosed is an ink composition that, while improving print quality, advantageously has excellent ink ejection stability and does not significantly erode members such as a head and, at the same time, can meet a recent demand for highly skillful printing conditions, for example, high-speed printing with very small amounts of droplets. Ink jet recording is carried out using an ink composition comprising an acetylene glycol, an alcohol adduct of ethylene oxide and/or propylene oxide, and a pyrrolid...

An ink jet ink composition comprising from about 30 to about 90% by weight of water, from about 0.5 to about 30% by weight of a pigment, from about 0.1 to about 10% by weight of natural or synthetic smectite clay mineral.

The present disclosure relates to an ink-jet ink set which, in spite of using a black ink including a black pigment, may display desirable storage stability and/or may form printed matter (e.g., images) with desirable rub fastness against a plain paper surface, color balance after fading (fading stability), and/or water resistance. An ink set may include a yellow dye ink including a yellow dye, a magenta dye ink including a magenta dye, a cyan dye ink including a cyan dye and a black ink, the bl...

A color ink jet ink set for color printing including: (a) a magenta ink having a carrier and a water-soluble, transition metal complex of an 8-heterocyclylazo-5-hydroxyquinoline dye; (b) a yellow ink having a carrier and a water-soluble yellow dye, (c) a cyan ink having a carrier and a water-soluble cyan dye, and (d) an orange and/or green ink having a carrier and a water-soluble orange and/or green dye.