Xerox Corporation

Other

William M Schwarz

Kurt B Gundlach

Timothy J Fuller

Marcel Philippe Breton

Raymond W Wong

Richard L Colt

Lupu Alexandru

Edward J Radigan

Robert H Marchessault

Bernard Henrissat

Stig E Friberg

David Allen Mantell

Bing R Hsieh

Robert W Gundlach

Ian D Morrison

Maura A Sweeney

Yvan Gagnon

Arthur M Gooray

Min-Hong Fu

Dale R Ims

Joseph J Wysocki

Peter F Erhardt

Luis A Sanchez

Louis V Isganitis

Robert S Karz

John F Oliver

Leonard M Carreira

John M Pochan

Michael P O'Horo

Julia A Kohlmeier

Charles G Dickerson

Kenneth W Gunther

Disclosed is a process which comprises incorporating into an ink jet printing apparatus an ink composition which comprises water, a colorant, and a comb copolymer, and causing droplets of the ink to be ejected in an imagewise pattern onto a substrate. In a particularly 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.

Ink jet printing with inks containing comb polymer dispersants

Disclosed is an ink composition which comprises (a) water, (b) a colorant; and (c) an additive selected from the group consisting of diamido quaternary dialkyl ammonium salts, bitail quaternary tetraalkyl ammonium salts, bitail imidazolium salts, bitail biomimetic phospholipid salts, specific bisquaternary salts, &bgr;-hydroxyethyl ethylene diamine fatty acids, specific polyammonium salts, ethoxylated polyamine compounds, biquaternary pyridinium salts, aminofunctional polyorganosiloxanes, and mixtures thereof.

Ink compositions

Disclosed is an ink composition which comprises (1) water; (2) a colorant; and (3) an additive selected from the group consisting of monoalkylamido quaternary ammonium salts and mixtures thereof.

Disclosed is an ink composition which comprises (1) water; (2) a colorant; and (3) an additive selected from the group consisting of di-substituted guanidinium salts, wherein the substituents are alkyl groups, arylalkyl groups, or mixtures thereof.

Disclosed is a recording sheet which comprises a substrate and an image-receiving layer situated on at least one surface of the substrate, said image-receiving layer being suitable for receiving images of an aqueous ink, said image-receiving layer comprising (a) a binder polymer; and (b) an additive selected from the group consisting of (5-carboxy-4-hexyl-2-cyclohexen-1-yl) octanoic acid, (6-carboxy-4-hexyl-2-cyclohexen-1-yl) octanoic acid, saccharin salts, dihexyl sulfosuccinate salts, benzoate salts, monohydroxy-substituted benzoate salts, dihydroxy-substituted benzoate salts, trihydroxy-substituted benzoate salts, benzene sulfonate salts, monohydroxy-substituted benzene sulfonate salts, dihydroxy-substituted benzene sulfonate salts, benzene disulfonate salts, toluene sulfonate salts, bromobenzene sulfonate salts, xylene sulfonate salts, cumene sulfonate salts, cymene sulfonate salts, cinnamate salts, isonicotinate salts, gallate salts, piccolinate salts, hydroxynaphthoate salts, n-butylmonoglycolsulfate salts, 2-ethylhexylsulfate salts, p-aminobenzoic acid acid salts, procaine acid salts, dibucaine acid salts, caffeine, resorcinol, and mixtures thereof.

Recording sheets and ink jet printing processes therewith

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 an ink composition which comprises water, a colorant, and an ionic liquid material. In a preferred embodiment, the ink is substantially free of organic solvents. Also disclosed is a process which comprises incorporating the ink composition into an ink jet printing apparatus and causing droplets of the ink composition to be ejected in an imagewise pattern onto a substrate.

Ink compositions containing ionic liquid solvents

Disclosed is a recording sheet which comprises a substrate and a coating thereon comprising water and a surfactant capable of exhibiting a liquid crystalline phase in water at a temperature of about 25.degree. C. or higher, said coating containing the water and surfactant in relative concentrations such that upon addition of water to the coating, the surfactant undergoes a phase change, thereby increasing the viscosity of the coating. In one embodiment, the surfactant is in a lamellar liquid crystalline phase and, upon addition of water to the coating, the surfactant undergoes a phase change to a hexagonal liquid crystalline phase. Also disclosed are ink jet printing processes wherein an aqueous ink is applied to the aforementioned recording sheet.

Coated recording sheets

Disclosed is an ink composition which comprises (1) water; (2) a dye; and (3) a cationic amido amine copolymer. Also disclosed are methods for using the aforementioned ink composition in ink jet printing processes.

Ink compositions containing cationic amido amine polymers

Disclosed is an ink composition which comprises (1) water; (2) an anionic dye; and (3) a copolymer of vinyl pyrrolidinone and a vinyl imidazolium salt. Also disclosed are methods for using the aforementioned ink compositions in ink jet printing processes.

Ink compositions containing vinyl pyrrolidinone/vinyl imidazolium

Disclosed is an ink composition which comprises water, an anionic dye, and a monoquaternary cationic penetrant of the formula ##STR1## wherein R.sub.1 is either a benzyl group or an alkyl group having at least about 3 carbon atoms, R.sub.2, R.sub.3, and R.sub.4 each, independently of the others, are hydrogen atoms, methyl groups, or ethyl groups, wherein two or more R groups can be joined together to form a ring, X is an anion, and n is an integer representing the charge on the anion, wherein the ink exhibits rapid penetration when applied to plain paper. Also disclosed is a set of inks for generating multicolored images which comprises (a) a first ink as described above; and (b) a second ink comprising water and a pigment; wherein intercolor bleed between the first ink and the second ink is reduced. Further disclosed are ink jet printing processes with the ink and ink set described above.

Inks for ink jet printing

Disclosed is an ink composition which comprises (1) water; (2) a colorant; and (3) an additive selected from the group consisting of oxy acids, oxy acid salts, and mixtures thereof. Also disclosed is a thermal ink jet printing process employing the ink.

Ink compositions containing oxy acids or oxy acid salts

Disclosed is an ink composition which comprises water, a colorant, and a monomeric oxazolidinone compound. In one embodiment, the oxazolidinone compound is of the formula ##STR1## wherein R.sub.1 is a hydrogen atom, an alkyl group, or a substituted alkyl group, and R.sub.2, R.sub.3, R.sub.4, and R.sub.5 each, independently of the others, are hydrogen atoms, alkyl groups, substituted alkyl groups, or alkoxy groups. Also disclosed are ink jet printing processes using the aforementioned ink.

Ink jet inks containing oxazolidinones

Disclosed is an ink jet printing process which comprises (1) incorporating into an ink jet printer an aqueous ink composition which comprises water, a humectant, and a colorant of the formula ##STR1## wherein X and X' each, independently of one another, are hydrogen, alkyl, halogen, ester, or amide, wherein Z and Z' each, independently of one another, are either (A): ##STR2## wherein R is hydrogen, hydroxy, alkoxy, aryloxy, ester, amine, amide, ether, thioether, or --(O(CH.sub.2).sub.y).sub.z OH wherein y is an integer of from 1 to 3 and z is an integer of from 1 to about 50, wherein A, B, C, D, E, and F each, independently of one another, are hydrogen, --COOH, --SO.sub.3 M, wherein M is a cation, or --NR'R'', wherein R' and R'' each, independently of one another, are hydrogen, alkyl, or aryl, wherein at least one of A, A', B, and B' is not hydrogen, or (B): ##STR3## wherein S is hydrogen or --(O(CH.sub.2).sub.y).sub.z OH, wherein y is an integer of from 1 to 3 and z is an integer of from 1 to about 50, wherein at least one S is not hydrogen; and wherein J, K, L, N, P, and Q each, independently of one another, are hydrogen, --COOH, --SO.sub.3 M, wherein M is a cation, or --NR'R'', wherein R' and R'' each, independently of one another, are hydrogen, alkyl, or aryl.

Dye and ink compositions

Disclosed is an ink composition which comprises water, an oil-soluble or alcohol-soluble dye, and a surfactant, said ink exhibiting a liquid microemulsion phase at a first temperature and, at a second temperature higher than the first temperature, separating into a mixture of an aqueous liquid phase and a liquid crystalline gel phase.

Growing community of inventors

Webster, NY, United States of America

William M Schwarz