With Pigment Patents (Class 106/31.28)
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Patent number: 6422695Abstract: The invention encompasses a compound having the formula: wherein at least one Q1, Q2, Q3 and Q4 is a halogen atom and any of Q1, Q2, Q3 and Q4 which is not a halogen atom is a hydrogen atom; and wherein R comprises at least two carbon atoms. The invention further encompasses inclusion of such compound into phase change ink carrier compositions, as well as printing methods utilizing such compound.Type: GrantFiled: January 2, 2002Date of Patent: July 23, 2002Assignee: Xerox CorporationInventor: C. Wayne Jaeger
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Patent number: 6406606Abstract: An electrocoagulation printing ink contains electrolytically coagulable polymer, soluble electrolyte, coloring agent, and liquid medium, where electrocoagulability is obtained by an electric circuit comprised of capacitor and resistor under constant voltage with the time constant of 0.02 seconds and the electrocoagulability obtained with the time constant of 0.09 seconds have a ratio from 1:1.5 to 1:3.0, hence improving the gradation reproducibility. Further, bisphenol sulfonic acid polymer can be used as a dispersant, and/or, a pigment in which the particle size of the pigment at 50% of the volume accumulation is 0.3 to 2 &mgr;m when dispersed in the ink and a ratio of particles with a particle size equal to or less than 0.2 &mgr;m is equal to or less than 25% by weight in the particle size distribution of the pigment, thereby producing a print free of undesirable background in its non-image region and high of quality.Type: GrantFiled: March 17, 2000Date of Patent: June 18, 2002Assignee: Toyo Ink Mfg. Co., Ltd.Inventors: Atsushi Betto, Tetsu Otsuji, Katsuhiko Sawamura, Hiroyuki Kawashima
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Patent number: 6387168Abstract: Disclosed herein is an ink comprising a first pigment, a second pigment and a dispersant, both of the pigment being dispersed in an aqueous medium, wherein the first pigment is a self-dispersing pigment having an anionic group or a cationic group, the group being bonded directly or through an atomic group to a surface of the pigment, the second pigment is a pigment dispersible in an aqueous medium with the dispersant, and the dispersant is an ionic polymeric dispersant having a same polarity as that of the group bonded to the surface of the pigment or a nonionic polymeric dispersant.Type: GrantFiled: December 20, 1999Date of Patent: May 14, 2002Assignee: Canon Kabushiki KaishaInventors: Noribumi Koitabashi, Sadayuki Sugama, Yoshihisa Takizawa, Hitoshi Tsuboi
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Patent number: 6383274Abstract: The present invention relates to aqueous ink jet ink compositions comprising a water-soluble or ink-compatible anti-intercolor bleed agent and ink jet printing processes. The inks typically comprise at least water, a colorant of a dye or pigment, or a mixture of dye and pigment, and a water-soluble or ink-compatible anti-intercolor bleed agent. In one embodiment the water-compatible intercolor bleed agent of the invention comprises a fluorinated composition, more particularly a perfluoroalkyl acid salt. The water-soluble or ink-compatible anti-intercolor bleed agent can form hydrophobic layers near the image boundary, thus preventing undesired mixing of different neighboring inks which forms intercolor bleeding. The inks of the present invention exhibit reduced drying time, intercolor bleeding, and image defect as well as providing uniform ink image on transparencies.Type: GrantFiled: November 24, 1999Date of Patent: May 7, 2002Assignee: Xerox CorporationInventor: John Wei-Ping Lin
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Patent number: 6383275Abstract: The present invention relates to aqueous ink jet ink compositions comprising an anti-intercolor bleed agent, preferably a water soluble or ink-compatible agent. The inks typically also comprise water and at least a colorant of a dye, a pigment, or a mixture of dye and pigment. In one embodiment, ink jet ink compositions comprising an anti-intercolor bleed agent which is represented by {[(R)m—G)b]n}s(A)(X)p (Formula (I)), and ink jet printing processes which print the ink jet ink compositions in any desired printing sequence or order onto an optionally heated substrate are provided. The water-soluble or ink-compatible anti-intercolor bleed agent may form hydrophobic layers near the image boundary, thus preventing undesired mixing of two different neighboring inks which forms intercolor bleed. The ink jet ink compositions of the present invention exhibit reduced drying time, intercolor bleeding, and image defect as well as providing uniform ink images on transparencies.Type: GrantFiled: November 24, 1999Date of Patent: May 7, 2002Assignee: Xerox CorporationInventor: John Wei-Ping Lin
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Patent number: 6383277Abstract: Description of an inkset for utilization in inkjet printers, comprising a first ink containing a watery ink medium, a first color pigment dispersed in the ink medium, and optionally, a first dispersing medium, whereby the first color pigment and/or the first dispersing medium carry ionic groups, a second ink containing a watery ink medium, a color substance soluble in the ink medium, whereby the soluble color substance acts as precipitation means for the first color pigment. A first ink containing a watery ink medium, a first color medium dispersed in the ink medium and optionally, a first dispersing medium, whereby the first color pigment and/or the first dispersing medium carry ionic groups, a second ink containing a watery ink medium and a second color pigment and/or, optionally, a second dispersing medium, whereby the second color medium and/or the second dispersing medium act as precipitation agent for the first color pigment.Type: GrantFiled: August 6, 1998Date of Patent: May 7, 2002Assignee: Pelikan Produktions AGInventor: Daniel Loosli
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Publication number: 20020043177Abstract: High quality images showing an excellent fixation are formed by an ink-jet recording method using pigment inks. An ink set for the ink jet-recording method comprises a first ink containing an anionic dye in an aqueous medium, a second ink containing an anionic dye and having a lower coloring material content than the first ink and a dispersion destabilizing substance, and a third ink containing a self-dispersible first pigment, a second pigment and a polymeric dispersant for dispersing the second pigment in an aqueous medium. The dispersion destabilizing substance destabilizes the dispersion stability of at least either the first pigment or the second pigment in the third ink when the second ink and the third ink are brought into contact with each other. The second ink and the third ink are applied onto a printing medium one after another or substantially simultaneously so that they are brought into contact with each other in a liquid state on the printing medium.Type: ApplicationFiled: June 20, 2001Publication date: April 18, 2002Inventors: Noribumi Koitabashi, Hitoshi Tsuboi, Yasunori Fujimoto
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Patent number: 6367922Abstract: An ink jet printing process for improving the water-fastness of an ink jet image comprising: providing an ink jet recording element having a support having thereon an image-recording layer comprising a cross-linkable polymer of gelatin or acetoacetylated poly(vinyl alcohol) and a mordant; applying liquid ink droplets of an anionic, water-soluble dye on the image-recording layer in an image-wise manner; and applying an aqueous solution of a hardener to the image to cross-link the binder.Type: GrantFiled: December 18, 1998Date of Patent: April 9, 2002Assignee: Eastman Kodak CompanyInventors: Charles E. Romano, Jr., Elizabeth A. Gallo
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Publication number: 20020033117Abstract: A polychromic ink composition depending on viewing angle comprises 0.5 to 40% by weight of cholesteric liquid crystal polymer particles whose maximum particle diameter is 1 to 200 &mgr;m, 1.0 to 30.0% by weight of binder resins, 0.05 to 20% by weight of pigments with a deep-colored coloring matter whose average particle diameter is 0.01 to 0.5 &mgr;m, 0.01 to 5.0% by weight of a shear-thinning property imparting agent, and water with respect to the total amount of the ink composition.Type: ApplicationFiled: April 13, 2001Publication date: March 21, 2002Applicant: Sakura Color Products CorporationInventors: Hiroshi Inoue, Satoshi Maruyama, Norihiro Hirano, Hidetoshi Fukuo, Naoshi Murata, Shoko Matsumoto, Kaoru Matsumoto
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Publication number: 20020014179Abstract: Organic pigments are conditioned by introducing a liquid prepigment suspension into a miniaturized continuous reactor and thermally treating therein.Type: ApplicationFiled: June 27, 2001Publication date: February 7, 2002Applicant: Clariant International Ltd.Inventors: Uwe Nickel, Klaus Kund, Erwin Dietz, Joachim Weber, Olaf Schupp
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Patent number: 6342616Abstract: Triphenylmethane dyes or colorants with sterically hindered fugitive amine counter ions are provided as durable, storage-stable, and excellent coloring and shading printing inks. Ink compositions are disclosed which provide improvements in long-term storage capabilities, particularly within alkaline environments, extremely effective colorations of cellulose-based substrates, and lower cost over those of the prior art. The preferred dyes or colorants are triphenylmethane polymeric colorants which are capped with cyclic anhydride and the preferred sterically hindered amine counter ions are those based on low molecular weight fugitive tertiary amines, such as N,N-dimethylethanolamine. Compositions comprising water soluble or emulsion resins as diluents for lowered viscosity and lower overall cost are also contemplated. Furthermore, compositions comprising the inventive colorant and other pigments, dyes, surfactants, preservatives, and other colorants are contemplated.Type: GrantFiled: January 18, 2000Date of Patent: January 29, 2002Assignee: Milleken & CompanyInventor: Philip G. Harris
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Patent number: 6342618Abstract: Triphenylmethane dyes or colorants with sterically hindered fugitive amine counter ions are provided as durable, storage-stable, and excellent coloring and shading printing inks. Ink compositions are disclosed which provide improvements in long-term storage capabilities, particularly within alkaline environments, extremely effective colorations of cellulose-based substrates, and lower cost over those of the prior art. The preferred dyes or colorants are triphenylmethane polymeric colorants which are capped with cyclic anhydride and the preferred sterically hindered amine counter ions are those based on low molecular weight fugitive tertiary amines, such as N,N-dimethylethanolamine. Compositions comprising water soluble or emulsion resins as diluents for lowered viscosity and lower overall cost are also contemplated. Furthermore, compositions comprising the inventive colorant and other pigments, dyes, surfactants, preservatives, and other colorants are contemplated.Type: GrantFiled: April 12, 2001Date of Patent: January 29, 2002Assignee: Milliken & CompanyInventor: Philip G. Harris
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Patent number: 6342095Abstract: Disclosed herein is an ink set comprising two black inks the coloring materials for which are both pigments, wherein one black ink is cationic, and the other black ink is anionic.Type: GrantFiled: May 22, 1998Date of Patent: January 29, 2002Assignee: Canon Kabushiki KaishaInventors: Yoshihisa Takizawa, Hisashi Teraoka, Koichi Osumi, Yoichi Takada
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Patent number: 6342096Abstract: Disclosed herein is an ink-jet recording method comprising applying a plurality of inks to a recording medium by an ink-jet system to form dual- or multi-toned image on the recording medium, wherein each of the inks permits formation of such an image on a transparent recording medium whose a* and b* values of CIELAB determined by measuring the CIELAB color space of the image on a transparent recording medium with a single pass satisfy the relationship represented by the following formula (I); (a*2+b*2)½≦15 (I).Type: GrantFiled: February 2, 1999Date of Patent: January 29, 2002Assignee: Canon Kabushiki KaishaInventor: Yutaka Kurabayashi
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Patent number: 6342617Abstract: Triphenylmethane dyes or colorants with sterically hindered fugitive amine counter ions are provided as durable, storage-stable, and excellent coloring and shading printing inks. Ink compositions are disclosed which provide improvements in long-term storage capabilities, particularly within alkaline environments, extremely effective colorations of cellulose-based substrates, and lower cost over those of the prior art. The preferred dyes or colorants are triphenylmethane polymeric colorants which are capped with cyclic anhydride and the preferred sterically hindered amine counter ions are those based on low molecular weight fugitive tertiary amines, such as N,N-dimethylethanolamine. Compositions comprising water soluble or emulsion resins as diluents for lowered viscosity and lower overall cost are also contemplated. Furthermore, compositions comprising the inventive colorant and other pigments, dyes, surfactants, preservatives, and other colorants are contemplated.Type: GrantFiled: January 18, 2000Date of Patent: January 29, 2002Assignee: Milliken & CompanyInventor: Philip G. Harris
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Patent number: 6331203Abstract: An aqueous ink for a ball-point pen which is stable over time and has high pigment dispersion stability, includes a pigment, a water-soluble organic solvent, water, xanthane gum of about 0.01 to about 0.2 wt. % and a sodium alginate of about 0.2 to about 0.6 wt. % of a total amount of the ink.Type: GrantFiled: April 30, 2001Date of Patent: December 18, 2001Assignee: Kotobuki & Co., Ltd.Inventors: Katsuya Hattori, Akio Nakamura, Mikio Morishita
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Patent number: 6329446Abstract: An ink comprised of a vehicle, colorant, and resin emulsion, and wherein the resin emulsion contains water, surfactant, resin particles and solubilized resin obtained from the polymerization of a mixture of olefinic monomers, and wherein at least one of the olefinic monomers is an acid.Type: GrantFiled: June 5, 1997Date of Patent: December 11, 2001Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Garland J. Nichols, Elizabeth A. Kneisel, Chieh-Min Cheng
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Patent number: 6322619Abstract: An ink composition comprised of (1) a vehicle, (2) a mixture of colorants, and (3) a polyquaternary ammonium salt.Type: GrantFiled: February 22, 2000Date of Patent: November 27, 2001Assignee: Xerox CorporationInventors: Fereshteh Lesani, Marcel P. Breton, James D. Mayo
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Patent number: 6299675Abstract: Disclosed herein is a printing method comprising a step of applying a liquid composition containing a cationic substance and an ink containing an anionic substance respectively on a recording medium so that the liquid composition and the ink are in contact with each other on the recording medium, wherein the ink contains a coloring material at a concentration of not higher than 1% and has a pH of 10.5 or higher. The printing method permits the provision of an image having excellent water fastness, image quality and resistance to bleeding on plain paper and can prevent the occurrence of whitish haze at a highlight part.Type: GrantFiled: May 25, 1999Date of Patent: October 9, 2001Assignee: Canon Kabushiki KaishaInventors: Eriko Ono, Yoshihisa Takizawa
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Patent number: 6280511Abstract: A microbead comprising at least one thermoplastic polymers having distributed one or more compounds which are pigment precursors, the melting temperature of the lowest-melting polymer of the microbead being at least higher than the lowest temperature required to transform all pigment precursors in the microbead into the respective pigments.Type: GrantFiled: October 27, 1999Date of Patent: August 28, 2001Assignee: Ciba Specialty Chemicals Corp.Inventors: Ulrich Schaedeli, Patrice Bujard
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Patent number: 6277184Abstract: Disclosed is a black ink composition for ink jet recording, comprising at least carbon black, a black dye, a water-soluble organic solvent, and water, the black dye being a black dye represented by formula (I), C.I. Direct Black 154, or C.I. Direct Black 168: wherein M represents a cation of a group selected from the group consisting of a hydrogen atom, an alkali metal, ammonia, and an organic amine; m is 1 or 2; and n is 0 or 1.Type: GrantFiled: September 2, 1999Date of Patent: August 21, 2001Assignee: Seiko Epson CorporationInventor: Shinichi Kato
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Patent number: 6275816Abstract: A aqueous ink for a ball-point pen which is stable over time and has high pigment dispersion stability, includes a pigment, a water-soluble organic solvent, water, xanthane gum of about 0.01 to about 0.2 wt. % and a sodium alginate of about 0.2 to about 0.6 wt. % of a total amount of the ink.Type: GrantFiled: August 26, 1999Date of Patent: August 14, 2001Assignee: Kotobuki & Co., LTDInventors: Katsuya Hattori, Akio Nakamura, Mikio Morishita
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Patent number: 6264730Abstract: Water resistant ink compositions comprising (1) a water-soluble dye compound and/or an organic pigment compound, (2) an organosilicon compound prepared by hydrolyzing (A) a hydrolyzable silane obtained by reacting a specific aminated organic group-bearing hydrolyzable silane with a specific acrylic acid or acrylic ester compound, or a partial hydrolyzate thereof, and (B) another specific hydrolyzable silane or a partial hydrolyzate thereof, and (3) water have excellent water-resistance, good storage stability, good ink discharge stability, and outstanding color stability. The ink compositions are well suited for ink-jet printing.Type: GrantFiled: December 15, 1999Date of Patent: July 24, 2001Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Kazuyuki Matsumura, Masaaki Yamaya
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Patent number: 6251175Abstract: The present invention provides a jet ink composition and a method of jet printing onto non-porous substrates such as glass, metal, ceramics, and plastics images which have improved adhesion. The jet ink composition, which has short dry times, comprises an organic solvent, colorant, and a hydroxyaromatic resin with its hydroxyaromatic units being linked by a linkage other than alkylene ether linkage. The hydroxyaromatic units of the hydroxyaromatic resin are linked by, for example, an alkylene linkage. An example of a suitable hydroxyaromatic unit is a phenol. An example of the organic solvent is ethanol. The jet ink composition provides short dry times on non-porous substrates. In some embodiments of the ink composition, the image adhesion can be further improved by the use of an adhesion promoter such as a silane, a dendrimer, or a combination thereof.Type: GrantFiled: August 6, 1998Date of Patent: June 26, 2001Assignee: Marconi Data Systems Inc.Inventors: Linfang Zhu, Mohammed Siddiqui
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Patent number: 6247808Abstract: An ink-jet printing system is disclosed comprising a set of ink-jet inks comprising a first anionic ink comprising an aqueous vehicle, at least one first colorant, and at least one first anionic polymer; a second anionic ink comprising an aqueous vehicle; at least one second colorant, at least one second anionic polymer, and an acid additive having a pKa up to the pKa of the at least first polymer of the first ink; a third cationic ink comprising an aqueous vehicle, at least one third colorant, at least one third cationic polymer, and a pH in the range from about 2 to about 5; and a fourth anionic ink comprising an aqueous vehicle, at least one fourth anionic dye, and a precipitating agent. The printing system provides improved print quality, specifically, reduced bleed; improved edge-acuity, uniform area fills, and color quality; while maximizing lightfastness without sacrificing printing reliability.Type: GrantFiled: April 22, 1998Date of Patent: June 19, 2001Assignee: Hewlett-Packard CompanyInventors: Zeying Ma, Keshava A. Prasad
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Publication number: 20010003262Abstract: The invention provides a water-based metallic ink composition comprising a metallic powder pigment and a solvent characterized by its further comprising a polyvinyl alcohol. This composition provides a record consisting of a central line derived from a formulated colorant or the color of the writing substrate and contour lines derived from the metallic powder pigment and bordering on both sides of the central line.Type: ApplicationFiled: December 4, 2000Publication date: June 14, 2001Inventors: Yasuyuki Yoshimura, Naoshi Murata
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Patent number: 6232361Abstract: An actinic radiation curable, cationic polymerizable, ink and coating composition having greatly enhanced reactivity, and reduced viscosity and are low in odor comprised of an aqueous solution containing a cationic polymerizable compound such as an cycloaliphatic epoxy compound, a water compatible hydroxy functional cyclic ether compound, particularly, an epoxy or oxetane compound, and water.Type: GrantFiled: December 11, 1998Date of Patent: May 15, 2001Assignee: Sun Chemical CorporationInventors: Mikhail Laksin, Jean Dominique Turgis, Bruce Rose, Subhankar Chatterjeee
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Patent number: 6190733Abstract: This invention provides water-based compositions, particularly coating, ink, and agricultural compositions, manifesting reduced equilibrium and dynamic surface tension by the incorporation of a surface tension reducing amount of certain alkylated aminoether compounds of the structure R—HN(CH2)p[O(CH2)n]mO(CH2)qNH—R′ where n is 2-6, m is 0-4, and p and q are 2-6, and R and R′ independently are an alkyl group comprising 5 to 18 carbons, preferably which is branched or in which the point of attachment to nitrogen is on a nonterminal carbon.Type: GrantFiled: June 7, 1999Date of Patent: February 20, 2001Assignee: Air Products and Chemicals, Inc.Inventors: Kevin Rodney Lassila, Kristen Elaine Minnich, Richard Van Court Carr
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Patent number: 6187086Abstract: Two classes of solvents, organic esters and diols and triols, help to reduce bleed between black (pigment-containing) inks and color (water-soluble dye-based) inks when used in formulating inks that contain self-dispersed pigments. The solvents help self-dispersed pigments to agglomerate by producing successful mutual collisions when the electrostatic potential is reduced with positively charged color inks. It appears that these solvents may be changing the dielectric constant of the ink, thereby reducing the repulsion potential of the pigment particles themselves.Type: GrantFiled: February 19, 1999Date of Patent: February 13, 2001Assignee: Hewlett-Packard CompanyInventor: Zia Rehman
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Patent number: 6176908Abstract: Aqueous, fluorescent red ink jet inks which meet US Postal Service requirements for metered mail are disclosed and comprise an aqueous vehicle, a red or magenta pigment, a polymeric dispersant, a fluorescent dye and, optionally a hydrotrope additive.Type: GrantFiled: September 20, 1999Date of Patent: January 23, 2001Assignee: E. I. du Pont de Nemours and CompanyInventors: Richard D. Bauer, John Morrow Gardner, Loretta Ann Grezzo Page, David Alvin Tyvoll