Abstract: A water based inkjet ink set with excellent image stability, durability and quality, comprising at least one cyan ink, at least one magenta ink, at least one yellow ink, at least one black ink, and at least one colorless protective ink, wherein: (a) the cyan, magenta, yellow, and black inks each comprise a pigment colorant; (b) the cyan, magenta, yellow, black, and colorless protective inks each comprise a polymeric binder additive; and (c) the surface tensions of the inks have the following relationships: (i) the dynamic surface tension at 10 milliseconds surface age for all inks of the ink set is greater than or equal to 35 mN/m, (ii) the static surface tensions of the yellow ink and of the colorless protective ink are at least 2.0 mN/m lower than the static surface tensions of the cyan, magenta and black inks of the ink set and (iii) the static surface tension of the colorless protective ink is at least 1.0 mN/m lower than the static surface tension of the yellow ink.

Abstract: An ink jet set comprising: a) a cyan ink comprising a carrier and a sulfonated copper phthalocyanine dye; b) a magenta ink comprising a carrier and an anthrapyridone magenta dye or metal complex magenta dye, or azo-naphthol derivative magenta dye or mixture thereof; c) a yellow ink comprising a carrier and an azo-aniline yellow dye or metal complex yellow dye or mixtures thereof; and d) a trisazo black dye of the following structure where Met is a metal atom, preferably Al, Co, Cr, Cu, Fe, or Ni; R1 is a phenyl or naphthalene radical substituted by 1, 2 or 3 substituents selected from the group consisting of OH, O(C1–C6)-alkyl, COOM, SO3M and NH2; R2 is C1–C6-alkyl, n is 0 or 1, X is a chemical bond or —CO— or —SO2—; R3 is H, methyl or O(C1–C6)-alkyl; R4 and R5 are each H, COOM or SO3M; R6 is a phenyl, pyridyl or pyrazole radical substituted by 1,2 or 3 substituents selected from the group consisting of OH, O(C1–C6)-alkyl, COOM, SO3M, NH2, NHaryl, NHacyl and phenylsulfo; and M is ammonium, H, K, Li, or Na

Abstract: An ink jet ink comprising: a) at least one first metal complex black dye that when printed alone on a receiving element gives a CIELAB a* value>0 and at 1.0 Status A visual density; b) at least one second metal complex black dye that when printed alone on a receiving element gives a CIELAB a* value<0 and at 1.0 Status A visual density; and c) at least one yellow azo-aniline yellow dye or metal complex yellow dye or mixtures thereof.

Abstract: This invention relates to an ink jet ink set comprising; A) a cyan ink comprising an aqueous vehicle and a sulfonated copper phthalocyanine dye, B) a magenta ink comprising an aqueous vehicle and an azo-naphthol derivative magenta dye, a metal complex magenta dye, or a anthrapyridone magenta dye or mixtures thereof, C) a yellow ink comprising an aqueous vehicle and a pyrazoleazoindole yellow dye or azo pyrazole-azole yellow dye or mixtures thereof and D) a black ink comprising an aqueous vehicle and a metal complex black dye.

Abstract: An ink composition and an ink cartridge having the ink composition are provided. The ink composition includes a colorant and an aqueous carrier. The ink composition has a dissolved gas content of less than 3 ppm as measured on the basis of the amount of dissolved oxygen gas at 20° C. at 20° C., a static surface tension at 25° C. of greater than 34 dynes/cm, and an advancing contact angle relative to an ink receiving receiver of less than about 55° at room temperature. The ink container can be a collapsible bag.

Abstract: An ink jet ink composition comprising water, a humectant and a mixture of a water-soluble, magenta anthrapyridone dye and Reactive Red 23, Reactive Red 24, Reactive Red 31, Reactive Red 120, Reactive Red 180, Reactive Red 241, Acid Red 35, Acid Red 52, Acid Red 249, Acid Red 289, Acid Red 388, Direct Red 227 or CAS No. 153204-88-7.

Abstract: A color inkjet ink set for color printing having: (a) a yellow ink having a carrier and a yellow dye; (b) a magenta ink having a carrier and a mixture of a water-soluble, magenta anthrapyridone dye and Reactive Red 23, Reactive Red 24, Reactive Red 31, Reactive Red 120, Reactive Red 180, Reactive Red 241, Acid Red 35, Acid Red 52, Acid Red 249, Acid Red 289, Acid Red 388, Direct Red 227 or CAS No. 153204-88-7; and (c) a cyan ink having a carrier and a cyan dye.

Abstract: An ink jet ink comprising a colorant, a water-soluble ester or amide of a pyrrolidin-2-one carboxylic acid and water.

Abstract: An ink jet printing method comprising the steps of: A) providing an ink jet printer that is responsive to digital data signals; B) loading said printer with an ink jet recording element comprising a support having thereon an image-receiving layer; C) loading said printer with an ink jet ink comprising water, a colorant and a water-soluble ester or amide of a pyrrolidin-2-one carboxylic acid; and D) printing on said image-receiving layer using said ink jet ink composition in response to said digital data signals.

Abstract: This invention relates to an inkjet ink composition comprising water, a water soluble dye and a water-dispersible sulfonated polyester ionomer containing sulfonated groups in the range of 5 to 40 mol % of the total polyester.

Abstract: An ink jet printing method comprising the steps of:

Abstract: An ink jet ink comprising a colorant, a water-soluble ester or amide of a pyrrolidin-2-one carboxylic acid and water.

Abstract: An ink composition and an ink cartridge having the ink composition are provided. The ink composition includes a colorant and an aqueous carrier. The ink composition has a dissolved gas content of less than 3 ppm as measured on the basis of the amount of dissolved oxygen gas at 20° C. at 20° C., a static surface tension at 25° C. of greater than 34 dynes/cm, and an advancing contact angle relative to an ink receiving receiver of less than about 55° at room temperature. The ink container can be a collapsible bag.

Abstract: An ink composition and an ink cartridge having the ink composition are provided. The ink composition includes a colorant and an aqueous carrier, the ink composition having a dissolved gas content of less than 3 ppm as measured on the basis of the amount of dissolved oxygen gas at 20° C. and a static surface tension at 25° C. of greater than 34 dynes/cm. The ink cartridge includes an ink container filled with a liquid ink, the liquid ink having a dissolved gas content of less than 3 ppm as measured on the basis of the amount of dissolved oxygen gas at 20° C. and a static surface tension at 25° C. of greater than 34 dynes/cm. The ink container can be a collapsible bag.

Abstract: An ink composition and an ink cartridge having the ink composition are provided. The ink composition includes a colorant and an aqueous carrier, the ink composition having a dissolved gas content of less than 3 ppm as measured on the basis of the amount of dissolved oxygen gas at 20° C. and a static surface tension at 25° C. of greater than 34 dynes/cm. The ink cartridge includes an ink container filled with a liquid ink, the liquid ink having a dissolved gas content of less than 3 ppm as measured on the basis of the amount of dissolved oxygen gas at 20° C. and a static surface tension at 25° C. of greater than 34 dynes/cm. The ink container can be a collapsible bag.

Abstract: A color ink jet ink set for color printing having a yellow ink of a carrier and a yellow azoaniline dye; a magenta ink of a carrier and a magenta anthrapyridone dye; and a cyan ink of a carrier and Direct Blue 307.

Abstract: A color inkjet ink set for color printing having: (a) a yellow ink having a carrier and a yellow dye; (b) a magenta ink having a carrier and a mixture of a water-soluble, magenta anthrapyridone dye and Reactive Red 23, Reactive Red 24, Reactive Red 31, Reactive Red 120, Reactive Red 180, Reactive Red 241, Acid Red 35, Acid Red 52, Acid Red 249, Acid Red 289, Acid Red 388, Direct Red 227 or CAS No. 153204-88-7; and (c) a cyan ink having a carrier and a cyan dye.

Abstract: An ink jet ink composition comprising water, a humectant and a mixture of a water-soluble, magenta anthrapyridone dye and Reactive Red 23, Reactive Red 24, Reactive Red 31, Reactive Red 120, Reactive Red 180, Reactive Red 241, Acid Red 35, Acid Red 52, Acid Red 249, Acid Red 289, Acid Red 388, Direct Red 227 or CAS No. 153204-88-7.

Abstract: An ink jet printing method having the steps of: A) providing an ink jet printer that is responsive to digital data signals; B) loading the printer with an ink-receiving element having a support having thereon an ink-receiving layer; C) loading the printer with an ink jet ink composition of water, a humectant and a mixture of a water-soluble, magenta anthrapyridone dye and Reactive Red 23, Reactive Red 24, Reactive Red 31, Reactive Red 120, Reactive Red 180, Reactive Red 241, Acid Red 35, Acid Red 52, Acid Red 249, Acid Red 289, Acid Red 388, Direct Red 227 or CAS No. 153204-88-7; and D) printing on the ink-receiving layer using the ink jet ink in response to the digital data signals.

Abstract: An ink jet printing method, having the steps of: A) providing an ink jet printer that is responsive to digital data signals; B) loading the printer with an ink-receiving element having a support having thereon an ink-receiving layer, C) loading the printer with an ink jet ink set for color printing having: (a) a yellow ink having a carrier and a yellow azoaniline dye; (b) a magenta ink having a carrier and a magenta anthrapyridone dye; and (c) a cyan ink having a carrier and Direct Blue 307; and D) printing on the ink-receiving layer using the ink jet ink in response to the digital data signals.