Xerox Corporation

Kurt B Gundlach

Richard L Colt

Luis A Sanchez

Maura A Sweeney

Danielle Avolio

William M Schwarz

Cheryl A Hanzlik

Edward J Radigan

Edward J Radigan, Jr

Kathy-Jo Brodsky

Aileen M Montes

Robert W Gundlach

Rachael L McGrath

Louis V Isganitis

Marcel Philippe Breton

David Allen Mantell

Shadi L Malhotra

Bing R Hsieh

Ian D Morrison

Min-Hong Fu

Dale R Ims

Joseph J Wysocki

Walter F Wafler

Michael P O'Horo

Gary R Fague

Joseph R Weber

Julia A Kohlmeier

Warren E Solodar

Norman S Edgett

Geoffrey A Nobes

Melvin D Croucher

Edward L Radigan, Jr

Miguel A Fontanez

Disclosed is a set of inks for printing multicolor images in an ink jet printer, said ink set comprising (1) a first ink having a first color and comprising water and an anionic dye; and (2) a second ink having a second color different from the first color and comprising (a) water, and (b) pigment particles having chemically bonded to the surfaces thereof moieties containing amine or quaternary amine functional groups, wherein the anionic dye in the first ink is capable of being immobilized on a printing substrate by interaction with the pigment particles in the second ink, thereby enabling reduced intercolor bleed.

Ink compositions with amine-functionalized pigments

A process for creating an image with improved quality and durability by depositing an ink image onto a toner composition residing on a substrate.

Color printing apparatus and processes thereof

Disclosed is a washing composition which comprises a linear alkyl diphenyl oxide disulfonate compound, a chloride, bromide, iodide, nitrate, acetylacetonate, polyphosphate, squarate, or sulfonate salt or mixtures thereof, and a cosolvent which is propylene glycol, dipropylene glycol, tripropylene glycol, diethylene glycol, glycerine, trimethylolethane, trimethylolpropane, or mixtures thereof.

Washing composition for indelible marks

Disclosed is an ink composition comprising (a) water, (b) a colorant, and (c) 1,3,5-trioxane or tetraethylene glycol dimethyl ether.

Ink compositions containing 1,3,5-trioxane or tetraethylene glycol dimethyl ether

Disclosed is an ink composition which comprises water, an acid dye, a monovalent salt, a polyquaternary amine compound, and an optional nonionic or cationic surfactant, said ink being substantially free of organic solvents. The ink is particularly suitable for applications such as ink jet printing and marking pens. The disclosed inks in some embodiments are substantially indelible. Also disclosed is a composition for removing the ink compositions from substrates to which they have been applied which comprises water and a dianionic surfactant, optionally further containing a salt, urea, and/or a viscosity building agent such as a gum.

Ink compositions substantially free of organic liquids

Disclosed is an ink composition comprising (a) water, (b) a colorant, and (c) malonaldehyde bis(dimethylacetal).

Ink compositions containing malonaldehyde bis(dimethaylacetal)

Disclosed is an ink composition which comprises (1) water; (2) a nonpolymeric salt comprising at least one cation and at least one anion; and (3) a colorant comprising an anionic dye complexed with a polyquaternary amine compound. Also disclosed is an ink composition which comprises (1) water; (2) a nonpolymeric salt comprising at least one cation and at least one anion; (3) an anionic dye; and (4) a polyquaternary amine compound. In one embodiment, the polyquaternary amine compound is selected from the group consisting of polydiallyl ammonium compounds, polyquaternized polyvinylamines, polyquaternized polyallylamines, epichlorohydrin/amine copolymers, cationic amido amine copolymers, copolymers of vinyl pyrrolidinone and a vinyl imidazolium salt, and mixtures thereof.

Ink compositions with improved shelf stability

Disclosed is a set of inks for generating multicolored images which comprises (a) a first ink having a first color, said first ink comprising water, a colorant, and a monomeric zwitterionic compound, said first ink being substantially free of organic acids having no basic functional groups thereon; and (b) a second ink having a second color darker than the first color of the first ink, said second ink comprising water and a pigment; wherein intercolor bleed between the first ink and the second ink is reduced in visibility.

Inks for ink jet printing with reduced intercolor bleed

Disclosed is an ink composition which comprises water, an anionic dye, and a polyquaternary amine compound selected from the group consisting of polydiallyl ammonium compounds, polyquaternized polyvinylamines, polyquaternized polyallylamines, and mixtures thereof. Also disclosed are methods for using the aforementioned ink composition in ink jet printing processes.

Ink compositions with improved waterfastness and smear resistance

Disclosed is an ink composition which comprises (a) water; (b) a colorant selected from the group consisting of reactive dyes having terminal vinyl sulfate groups and mixtures thereof; (c) N,N'-bis(3-aminopropyl)-1,2-ethylenediamine; (d) imidazole; (e) phosphorous acid or a phosphite salt; (f) tripropylene glycol monomethyl ether; and (g) a salt selected from Zn.sup.2+ salts and mixtures thereof. Also disclosed is an ink jet printing process employing the ink.

Ink compositions with improved waterfastness

An ink jet ink composition includes a liquid medium, a colorant, a dodecylbenzenesulfonate salt and a co-solvent.

Dipropylene glycol and countercation activation of

Disclosed is an ink composition which comprises water, a colorant, a bisquaternary ammonium compound, and a material of the formula �(F.sub.3 C(F.sub.2 C).sub.n CH.dbd.CHCH.sub.2 OCH(OH)CH.sub.2).sub.2 NCH.sub.2 COO.sup.- !�X.sup.+ !, wherein X is a cation and n is an integer of from about 3 to about 20. Also disclosed are ink jet printing processes employing the aforementioned ink.

Ink compositions for thermal ink jet printing

Disclosed is an ink composition which comprises (a) water, (b) a colorant, and (c) a material of the formula �(F.sub.3 C(F.sub.2 C).sub.n CH.dbd.CHCH.sub.2 OCH(OH)CH.sub.2).sub.2 NCH.sub.2 COO.sup.- !�X.sup.+ !, wherein X is a cation and n is an integer of from about 3 to about 20. Also disclosed are processes for preparing the ink composition and ink jet printing processes with the ink composition.

Disclosed is an ink composition which comprises water, a colorant, and an additive selected from imidazolium formate, imidazolium phosphite, and mixtures thereof. Another embodiment of the invention includes a process which entails incorporating an ink composition of the present invention into an ink jet printing apparatus and causing droplets of the ink composition to be ejected in an imagewise pattern onto a substrate. In one preferred embodiment, the printing apparatus employs a thermal ink jet process wherein the ink in the nozzles is selectively heated in an imagewise pattern, thereby causing droplets of the ink to be ejected in imagewise pattern. In another preferred embodiment, the ink is used in a printing process which employs microwave drying of the printed image.

Growing community of inventors

Fairport, NY, United States of America

Kurt B Gundlach