Five-ring Members In The Heteroyclic Ring Patents (Class 106/31.78)
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Patent number: 6669768Abstract: An ink jet ink comprising a colorant, a water-soluble ester or amide of a pyrrolidin-2-one carboxylic acid and water.Type: GrantFiled: March 8, 2002Date of Patent: December 30, 2003Assignee: Eastman Kodak CompanyInventors: James W. Blease, Steven Evans, Ellen J. Pyszczek
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Patent number: 6669767Abstract: 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.Type: GrantFiled: March 8, 2002Date of Patent: December 30, 2003Assignee: Eastman Kodak CompanyInventors: James W. Blease, Steven Evans, Ellen J. Pyszczek
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Publication number: 20030221586Abstract: An aggregation stabilizer is further added to an ink composition for inkjet recording which contains a colorant, a humectant, water, and a water-soluble substance that is condensation-polymerized in the absence of the water. With this aggregation stabilizer, a hardly-soluble or insoluble component formed by the colorant and the water-soluble substance is modified so as to be readily dissolved in water, whereby generation of an aggregate in the ink is prevented.Type: ApplicationFiled: May 19, 2003Publication date: December 4, 2003Inventors: Hidekazu Arase, Mamoru Soga
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Publication number: 20030217672Abstract: Processes for preparing modified pigments are described. In one embodiment, the process comprises the step of combining, in any order, a pigment having attached an electrophilic group and a thiol reagent comprising at least one —SH group and at least two ionic or ionizable groups. In a second embodiment, the process comprises the step of combining, in any order, a pigment having attached an electrophilic group and a thiopolymer comprising at least one —SH group. Modified pigments are also described.Type: ApplicationFiled: May 10, 2002Publication date: November 27, 2003Inventor: Paul S. Palumbo
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Patent number: 6652959Abstract: Disclosed are marking particles comprising a resin, a chelating agent, and a spiropyran material which is of the formula The marking particles are prepared by an emulsion aggregation process.Type: GrantFiled: January 11, 2002Date of Patent: November 25, 2003Assignee: Xerox CorporationInventors: Daniel A. Foucher, Raj D. Patel, Naveen Chopra, Peter M. Kazmaier
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Publication number: 20030213408Abstract: A pigment composition which shows excellent flowability and stability with time, when used for an ink, and whose printed matter shows an excellent gloss, clearness, color strength and migrationfastness, and an ink composition,Type: ApplicationFiled: May 16, 2003Publication date: November 20, 2003Inventors: Akimitsu Mochizuki, Shigeki Kato
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Patent number: 6645280Abstract: The present invention provides a jet ink composition suitable for printing watermarks on paper substrates. The jet ink composition comprises a solvent and a translucentizing agent. An example of a translucentizing agent is sucrose acetate isobutyrate. The present invention further provides a method of ink jet printing watermark on an object comprising projecting a stream of droplets of the ink composition and controlling the direction of the stream so that the droplets form the watermark on the object. The method of the present invention has the advantage that it provides high speed watermarking capability. The method provides a further advantage that it is economical in changing the design of watermarks. The method is versatile and allows changes in the design of watermarks to be incorporated readily.Type: GrantFiled: May 26, 2000Date of Patent: November 11, 2003Assignee: Videojet Technologies Inc.Inventors: Linfang Zhu, Christopher D. Peterson
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Patent number: 6641655Abstract: A fluidizing agent which is a diamine and/or diquaternary ammonium salt of a coloured acid of the phthalocyanine or disazo series of dyestuffs wherein the diamine or diquaternary ammonium cation is of formula (1) wherein R is optionally substituted C6-30-alkyl or optionally substituted C6-30-alkenyl; R1 is hydrogen, optionally substituted C1-30-alkyl or C2-30-alkenyl, optionally substituted cycloalkyl, optionally substituted aryl or optionally substituted aralkyl; R2, R3 and R5 are each, individually, optionally substituted C1-6-alkyl, optionally substituted cycloalkyl, optionally substituted aryl or optionally substituted aralkyl; R4 is hydrogen, optionally substituted C1-6-alkyl, optionally substituted cycloalkyl, optionally substituted aryl or optionally substituted aralkyl; X is C1-12-alkylene or C2-14-alkenylene; or R1 and R3 together with the two nitrogen atoms to which they are attached and X form a ring; and/or R4 and R5 together with the nitrogen atom to which they are attached form a ring.Type: GrantFiled: February 26, 2002Date of Patent: November 4, 2003Assignee: Avecia LimitedInventors: John Joseph McElhinney, Kristen Susan Low, Laura Janette Murphy
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Patent number: 6638624Abstract: A filter for a display device, which comprises a dipyrazolylsquarylium dye represented by formula: wherein A and B each independently represent a substituted or unsubstituted pyrazolyl group. The filter is excellent in resistance to heat and light and gives no adverse influences on luminescence of the three primary colors, red, green and blue.Type: GrantFiled: May 22, 2001Date of Patent: October 28, 2003Assignee: Mitsubishi Chemical CorporationInventor: Tetsuo Ozawa
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Patent number: 6638350Abstract: The invention provides an ink composition having improved printing performance. The ink composition includes an ink vehicle, from about 0.1 to about 10% by weight self-dispersed ink pigment, from about 0.1 to about 10% by weight dye, a humectant, and a penetrant, wherein the weight ratio of ink pigment to dye ranges from greater than about 0.75:1 to less than about 2.5:1. Such ink compositions exhibit substantially improved permanence, decreased drying time, and high optical density compared to ink compositions containing only ink pigment or dye.Type: GrantFiled: April 11, 2002Date of Patent: October 28, 2003Assignee: Lexmark International, Inc.Inventors: Susan Hardin Butler, Jing X. Sun
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Publication number: 20030177947Abstract: Provided are a navy blue water based ink composition for a ballpoint pen comprising a colorant, water and a dispersant, wherein at least cobalt phthalocyanine blue is used as the colorant, and a pH of the ink falls in a range of 7 to 10, and a ballpoint pen occulding the water based ink composition. Cobalt phthalocyanine blue has preferably a diameter of 500 nm or more and a content of 0.05 to 30% by weight based on the total amount of the ink composition.Type: ApplicationFiled: March 13, 2003Publication date: September 25, 2003Inventor: Hideyuki Ikoma
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Publication number: 20030172842Abstract: An ink jet printing method comprising the steps of:Type: ApplicationFiled: March 8, 2002Publication date: September 18, 2003Applicant: Eastman Kodak CompanyInventors: James W. Blease, Steven Evans, Ellen J. Pyszczek
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Publication number: 20030172841Abstract: Disclosed is a phase change ink composition comprising a phase change ink carrier and a colorant compound of the formula 1Type: ApplicationFiled: February 8, 2002Publication date: September 18, 2003Applicant: Xerox CorporationInventors: Donald R. Titterington, Michael B. Meinhardt, Jeffrey H. Banning, James D. Mayo, James M. Duff, Roger E. Gaynor, Harold R. Frame
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Publication number: 20030172843Abstract: An ink jet ink comprising a colorant, a water-soluble ester or amide of a pyrrolidin-2-one carboxylic acid and water.Type: ApplicationFiled: March 8, 2002Publication date: September 18, 2003Applicant: Eastman Kodak CompanyInventors: James W. Blease, Steven Evans, Ellen J. Pyszczek
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Patent number: 6602335Abstract: A method for dispersing a pigment in an aqueous solution is provided. The method comprises: (a) providing the pigment, which is distinguished in having an azo group and either a &bgr;-diketo structure or a hydroxyl group, each conjugatively associated with the azo group; (b) treating a surface of the pigment with a base having sufficient strength (e.g.Type: GrantFiled: May 8, 2001Date of Patent: August 5, 2003Assignee: Hewlett-Packard Development Company, L.P.Inventors: John R Moffatt, Joseph W Tsang
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Publication number: 20030127020Abstract: Disclosed is an ink composition comprising water, a colorant, and a borate ester, said ink containing water in an amount of at least about 5 percent by weight and containing water in an amount of no more than about 50 percent by weight, wherein either (a) the ink also contains an amine compound, or (b) the borate ester is hydrolytically stable.Type: ApplicationFiled: November 9, 2001Publication date: July 10, 2003Applicant: Xerox CorporationInventors: Thomas W. Smith, Jin Wu
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Patent number: 6589325Abstract: An object of the present invention is to provide a novel phthalocyanine compound or the salt thereof as a black colorant that has a hue suitable for ink-jet recording and can provide a recorded material with strong light fastness and water fastness, an ink composition containing the compound, an ink-jet recording method using the ink composition, a tank containing the ink composition, an ink-jet printer set with the tank, and a colored product colored by the colorant. The novel phthalocyanine compound or the salt thereof can be easily obtained by reacting an aminophthalocyanine with (meth)acrylic acid.Type: GrantFiled: October 9, 2001Date of Patent: July 8, 2003Assignee: Nippon Kayaku Kabushiki KaishaInventors: Yoshinori Katoh, Hirokazu Kitayama, Yasuo Shirasaki
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Patent number: 6582501Abstract: An ink composition for ink-jet printers is provided which includes a chromophore, a solvent, a co-solvent, a humectant, a surfactant, a viscosity adjuster and an additive. The additive is a nitrogen-containing heterocyclic compound. This nitrogen-containing heterocyclic compound has the hydroxy groups which improve miscibility with water, thereby preventing clogging of nozzles during use. The present invention increases the affinity for dye used as a chromophore and for the hydroxy groups of paper after discharging of ink, which allows the chromophore to easily fix on the paper, thus enhancing smearfastness of the ink composition after printing.Type: GrantFiled: February 26, 2001Date of Patent: June 24, 2003Assignee: Samsung Electronics Co., Ltd.Inventors: Seung-min Ryu, Seung-soon Jang, Jun-hoe Cha
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Publication number: 20030106461Abstract: For providing an ink composition which can reduce matamerizm while reducing the total amount of inks used when such ink composition is simultaneously used with another ink composition, and prevent reduction of the image quality, the present invention provides an ink composition wherein the difference between the maximum value and the minimum value of the reflectance of an output color through an ink jet output over a light source wavelength range of 400 to 700 nm, in which such output color satisfies formulae (1), (2) and (3) below at a spatial coordinate (L* a* b*) stipulated by CIE under the D 50 light source is not more than 20%:Type: ApplicationFiled: September 27, 2002Publication date: June 12, 2003Applicant: SEIKO EPSON CORPORATIONInventor: Tsuyoshi Sano
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Patent number: 6562116Abstract: An ink for a ball point comprising at least one organic solvent selected from the group consisting of alcohols and glycol ethers, a resin and a colorant, wherein the spectral reflectance determined in the state where the ink for a ball point pen is filled into an ink reservoir has a maximum value in 500 to 520 nm, and a ratio of maximum strength/minimum strength of the spectral reflectance is 2.2 to 5.5. Further provided is a ball point pen equipped with a transparent ink reservoir charged with the ink, wherein the color of the ink can visually be identified through a part which transmits light in the ball point pen barrel.Type: GrantFiled: March 5, 2001Date of Patent: May 13, 2003Assignee: Mitsubishi Pencil Kabushiki KaishaInventor: Atsushi Satoh
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Publication number: 20030079644Abstract: Disclosed is an aqueous ink composition comprising an aqueous liquid vehicle, a colorant, and an additive wherein, when the ink has been applied to a recording substrate in an image pattern and a substantial amount of the aqueous liquid vehicle has either evaporated from the ink image, hydrogen bonds of sufficient strength exist between the additive molecules so that the additive forms hydrogen-bonded oligomers or polymers.Type: ApplicationFiled: September 7, 2001Publication date: May 1, 2003Applicant: Xerox CorporationInventors: Thomas W. Smith, David J. Luca, Kathleen M. McGrane
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Publication number: 20030079647Abstract: A recording liquid comprising a coloring agent and water, wherein the recording liquid containing a polyol (A) having a solubility in water at 20° C. of 0.2 wt. % or more and not more than 4.5 wt. %, and at least one compound (B) selected from a group consisting of compound represented by formula (1) R1,R2,R3.N→O (where R1 and R2 are an alkyl group or a hydroxyalkyl group having 1 to 3 carbon atoms, and R3 is an alkyl group or an alkenyl group having 10 to 20 carbon atoms), and of compound represented by formula (2) represented by R4,R5,R6.N—CH2—CO—O−(where R4 and R5 are an alkyl group or hydroxyalkyl group having 1 to 3 carbon atoms, and R6 is an alkyl group or alkyl group derived from cocoanut oil having 10 to 16 carbon atoms that may contain an amide group).Type: ApplicationFiled: December 7, 2001Publication date: May 1, 2003Inventors: Tetsuya Kaneko, Masayuki Koyano, Nobutaka Osada, Hitoshi Arita
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Publication number: 20030070582Abstract: A compound expressed by General Formula 1, whose weight reduction after 1 hour at 60° C. is no more than 1%, is contained in an ink composition and/or a recording medium. This makes it possible to provide an ink composition, a recording medium, printed matter, and an ink jet recording method with which the light resistance of the printed matter is excellent, there is no ink clogging, and a high-quality image with almost no yellowing of the printed matter can be obtained.Type: ApplicationFiled: March 21, 2002Publication date: April 17, 2003Applicant: SEIKO EPSON CORPORATIONInventors: Kazuhiko Kitamura, Yasuhiro Oki, Tetsuya Aoyama, Kyoichi Oka, Nobuo Uotani, Hiroshi Takahashi, Yuji Ito
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Patent number: 6530986Abstract: There is provided a pigmented aqueous ink set which comprises: (a) a cyan ink which comprises at least one pigment which is a phthalocyanine compound; (b) a magenta ink which comprises at least one pigment which is a quinacridone compound; (c) a yellow ink wherein the pigment is C.I. Pigment Yellow 155; (d) a green ink wherein the pigment is selected from the group consisting of C.I. Pigment Green 7, 36, and mixtures thereof; (e) an orange ink wherein the pigment is selected from the group consisting of C.I. Pigment Orange 34, 36, 43, 61, 64, 71, and mixtures thereof; together with optionally (f) a black ink which comprises a black pigment. Preferably there is also present at least one water soluble organic cosolvent. The pigmented ink set is suitable for use in ink jet printing.Type: GrantFiled: September 27, 2001Date of Patent: March 11, 2003Assignee: Ilford Imaging UK LimitedInventors: Nicholas Alexander Walker, Peter Edward Rose
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Patent number: 6517618Abstract: Disclosed is an electrophoretic ink comprising a suspending fluid and, suspended in the suspending fluid, a plurality of particles comprising a mixture of a chelating agent and a spiropyran material of the formula wherein n is an integer representing the number of repeat —CH2— units and R is —H or —CH═CH2, the particles being free to migrate within the suspending fluid under the influence of an electric field.Type: GrantFiled: May 24, 2001Date of Patent: February 11, 2003Assignee: Xerox CorporationInventors: Daniel A. Foucher, Raj D. Patel, Naveen Chopra, Peter M. Kazmaier, James Wojtyk, Erwin Buncel
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Patent number: 6517619Abstract: A non-aqueous fluorescent ink composition suitable for use in writing instruments is described comprising a soluble fluorescent colorant, a solvent, and an opacifying agent. The ink composition may also include resins, stabilizers, surfactants, lubricants and other inert additives. The fluorescent ink composition exhibits a brilliant appearance in masscolor and when written on paper.Type: GrantFiled: August 24, 2000Date of Patent: February 11, 2003Assignee: BIC CorporationInventors: Michael T. Nowak, Qingping Chen
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Publication number: 20030024434Abstract: The invention provides an ink composition having improved printing performance. The ink composition includes an ink vehicle, from about 0.1 to about 10% by weight self-dispersed ink pigment, from about 0.1 to about 10% by weight dye, a humectant, and a penetrant, wherein the weight ratio of ink pigment to dye ranges from greater than about 0.75:1 to less than about 2.5:1. Such ink compositions exhibit substantially improved permanence, decreased drying time, and high optical density compared to ink compositions containing only ink pigment or dye.Type: ApplicationFiled: April 11, 2002Publication date: February 6, 2003Inventors: Susan Hardin Butler, Jing X. Sun
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Patent number: 6514330Abstract: Disclosed is an ink composition for ink jet recording which is free from precipitation and can realize, on a high level, various properties required of ink compositions for ink jet recording. In a copper complex colorant-containing ink for ink jet recording, the free copper ion concentration of the ink composition is brought to not more than 10 ppm. Preferably, ethylenediaminetetraacetic acid or a salt thereof is used to bring the free copper ion concentration to not more than 10 ppm.Type: GrantFiled: April 6, 2000Date of Patent: February 4, 2003Assignee: Seiko Epson CorporationInventors: Miharu Kanaya, Kyoichi Oka, Kazuaki Watanabe
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Patent number: 6508872Abstract: Lightfast additives for inkjet inks are provided. These additives exhibit excellent lightfastness of many dyestuffs (both water-soluble and water-insoluble). The lightfast additives exhibit good water solubility and significant effect on dye and pigment molecules which fade most when exposed to UV, ambient light, etc., and are suitable for improving permanence of inkjet inks, including thermal inkjet ink, piezo inkjet ink, and the like. The lightfast additive comprises a molecule which is composed of three parts or moieties: A—X—B, where (a) moiety A is an aryl sulfonic acid or aryl carboxylic acid, either in acid form or salt form, with or without substituents (e.g.Type: GrantFiled: February 26, 2001Date of Patent: January 21, 2003Assignee: Hewlett-Packard CompanyInventors: Khe C Nguyen, Sivapackia Ganapathiappan
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Patent number: 6508873Abstract: Phthalocyanine compounds of Formula (1) have utility as colorants in inks for ink-jet printing, where Formula (1) represents: MvPc(COR1)4 Formula (1) in which: M represents a metal or H; Pc represents a phthalocyanine nucleus; R1 represents OR2; or NR3R4; where R2, R3 and R4 independently represent H or optionally substituted C1-30carbyl; and v is the valence of Pc divided by the valence of M; provided than R1 is other than amino.Type: GrantFiled: January 31, 2001Date of Patent: January 21, 2003Assignee: Avecia LimitedInventors: Andrew Paul Shawcross, Gavin Wright
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Publication number: 20020195022Abstract: A method for dispersing a pigment in an aqueous solution is provided. The method comprises: (a) providing the pigment, which is distinguished in having an azo group and either a &bgr;-diketo structure or a hydroxyl group, each conjugatively associated with the azo group; (b) treating a surface of the pigment with a base having sufficient strength (e.g.Type: ApplicationFiled: May 8, 2001Publication date: December 26, 2002Inventors: John R. Moffatt, Joseph W. Tsang
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Patent number: 6494947Abstract: The invention relates to crimson-colored pigment mixtures comprising 1,4-diketo-2,5-dihydro-3,6-diarylpyrrolo[3,4c]pyrrole and quinacridone pigments in separate crystalline phases, having a high tinctorial strength combined with other excellent application properties. The pigments according to the invention can be used in printing inks, especially in printing inks for polychromatic printed products. A substantial constituent of the pigment mixtures according to the invention is 1,4-diketo-2,5-dihydro-3,6-di(4′-chlorophenyl)pyrrolo[3,4c]pyrrole or 2,9-dichloroquinacridone, which are subjected to kneading with a crystalline inorganic salt and a neutral organic liquid. The invention also relates to a process for the preparation of such pigment compositions, the use thereof in the production of printing inks, and such printing inks themselves.Type: GrantFiled: September 19, 2001Date of Patent: December 17, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Hanspeter Hauser, Yves Grandidier, Klaus Ruf
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Publication number: 20020185036Abstract: An ink composition and/or a recording medium are made to contain a compound expressed by general formula (1) and a hydrazide compound. An ink composition thereby obtained does not clog and the ink composition and recording medium thus obtained can offer high quality images that hardly cause yellowing of the resulting recording with superior light resistance. Recording and an inkjet recording method pertaining thereto are also provided.Type: ApplicationFiled: March 21, 2002Publication date: December 12, 2002Applicant: SEIKO EPSON CORPORATIONInventors: Yasuhiro Oki, Kazuhiko Kitamura, Tetsuya Aoyama, Kyoichi Oka, Nobuo Uotani, Hiroshi Takahashi, Yuji Ito
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Publication number: 20020174802Abstract: Lightfast additives for inkjet inks are provided. These additives exhibit excellent lightfastness of many dyestuffs (both water-soluble and water-insoluble). The lightfast additives exhibit good water solubility and significant effect on dye and pigment molecules which fade most when exposed to UV, ambient light, etc., and are suitable for improving permanence of inkjet inks, including thermal inkjet ink, piezo inkjet ink, and the like. The lightfast additive comprises a molecule which is composed of three parts or moieties: A-X-B, where (a) moiety A is an aryl sulfonic acid or aryl carboxylic acid, either in acid form or salt form, with or without substituents (e.g.Type: ApplicationFiled: February 26, 2001Publication date: November 28, 2002Inventors: Khe C. Nguyen, Sivapackia Ganapathiappan
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Patent number: 6478863Abstract: Various modified pigment products are described which are preferably capable of being dispersed in a variety of materials such as coatings, inks, toners, films, plastics, polymers, elastomers, and the like. The modified pigments are pigments having attached groups, such as polymeric groups, onto the pigment by means other than adsorption. A modified pigment product is described comprising a pigment having attached at least one group comprising the formula: —X—[NIon]p,R wherein X comprises an aromatic group or an alkyl group, NIon comprises at least one type of non-ionic group, R represents hydrogen or comprises an aromatic group or an alkyl group, and p represents an integer of from 1 to 500. Modified pigment products are also described comprising a pigment having attached at least one alkylene oxide group or at least one polymeric group.Type: GrantFiled: December 29, 2000Date of Patent: November 12, 2002Assignee: Cabot CorporationInventors: Joseph E. Johnson, Nanying Bian, Collin P. Galloway
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Patent number: 6478862Abstract: A method of making an ink jet ink that entails combining a water miscible organic solvent, water, and a pigment dispersion, and blending the water miscible organic solvent, the water, and the pigment dispersion together to form the ink jet ink, wherein the ink jet ink is capable of exhibiting no pigment precipitation, no pigment agglomeration, and no pigment flocculation after being stored in the absence of any agitation for a period of at least about 1 month.Type: GrantFiled: March 14, 2000Date of Patent: November 12, 2002Assignee: MacDermid Acumen, Inc.Inventor: Hamdy A. Elwakil
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Patent number: 6468337Abstract: 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.Type: GrantFiled: July 19, 2000Date of Patent: October 22, 2002Assignee: Xerox CorporationInventors: Kurt B. Gundlach, Richard L. Colt, Maura A. Sweeney, Luis A. Sanchez
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Publication number: 20020139280Abstract: A ballpoint pen oil-based ink composition, comprising an ink having therein a mixture of at least one phosphoric acid ester having an acid number of 90 to 600 and at least one weakly cationic component selected from the group consisting of:Type: ApplicationFiled: December 27, 2001Publication date: October 3, 2002Applicant: MITSUBISHI PENCIL CO., LTD.Inventor: Shuji Ichikawa
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Patent number: 6454845Abstract: Phthalocyanine compounds of Formula (1) have utility as colorants in inks for ink-jet printing, where Formula (1) represents: MvPc(SO2NHAr)x Formula (1) in which: M represents a metal or H; Pc represents a phthalocyanine nucleus; Ar represents an aromatic moiety optionally substituted by one or more groups selected from an optional substituent or optionally substituted C1-30carbyl; v is the valence of Pc divided by the valence of M; and x is from 2.5 to 4.5.Type: GrantFiled: January 31, 2001Date of Patent: September 24, 2002Assignee: Avecia LimitedInventors: Andrew Paul Shawcross, Gavin Wright, Roy Bradbury
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Patent number: 6444022Abstract: A water based offset lithographic ink comprising water; a modified rosin polymer comprised of resins soluble in water regardless of the pH of the water, resin rosin salts soluble in water at pH ranging from 7.5 to 10 and aqueous emulsion resins; a modified linseed oil; and pigment.Type: GrantFiled: May 20, 2000Date of Patent: September 3, 2002Assignee: Sun Chemical CorporationInventors: Ramasamy Krishnan, Martin Thomas Czebotar, Hugo Babij
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Publication number: 20020117080Abstract: A colored composition for color filter contains a colorant carrier formed of a transparent resin, a precursor of a transparent resin or a mixture thereof, and a green colorant dispersed in the colorant carrier. The green colorant contains a first halogenated metallophthalocyanine pigment having copper as a central metal, and at least one second halogenated metallophthalocyanine pigment having, as a central metal, a metal selected from the group consisting of Mg, Al, Si, Ti, V, Mn, Fe, Co, Ni, Zn, Ge and Sn. The content of the second halogenated metallophthalocyanine pigment is within a range of 1 to 80 mol % based on a total amount of the green colorant. Also disclosed is a color filter including at least one red filter segment, at least one blue filter segment, and at least one green filter segment. At least one green filter segment is prepared from the above-mentioned colored composition.Type: ApplicationFiled: December 19, 2001Publication date: August 29, 2002Inventors: Satoshi Okutsu, Kenichi Fujita, Yukio Kodama, Ichiro Toyoda, Yuji Hirasawa, Masashi Sawamura
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Patent number: 6436178Abstract: An ink, such as an inkjet ink composition is described which contains at least one colorant, at least one liquid vehicle, at least one humectant, and at least one cyclic amide. Methods to improve the resistance to highlighter smear, minimize banding of a printed image, improve the dry or wet rub resistance of a printed image, and/or improve the waterfastness of a printed image using the ink compositions of the present invention are further described.Type: GrantFiled: December 20, 2000Date of Patent: August 20, 2002Assignee: Cabot CorporationInventor: Jason D. Hosmer
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Publication number: 20020096085Abstract: An aqueous ink composition contains at least one pigment selected from the group consisting of a condensed azo pigment, a condensed polycyclic pigment, a phthalocyanine pigment, and a nickel complex azo pigment, at least an anionic surfactant with ethylene oxide group or a nonionic surfactant with ethylene oxide group as a dispersant, a wetting agent, a penetrating agent, and water, with the ink composition having a surface tension of 20 mN/m or more and less than 35 mN/m. A yellow ink containing at least one pigment selected from the group consisting of C.I. Pigment Yellow 128, C.I. Pigment Yellow 138, C.I. Pigment Yellow 151, C.I. Pigment Yellow 97, and C.I. Pigment Yellow 150, a magenta ink containing at least one pigment of C.I. Pigment Red 122 or C.I. Pigment Violet 19, a cyan ink containing at least one pigment of C.I. Pigment Blue 15:3 or C.I. Pigment Blue 15:4, each color ink further containing a specific anionic surfactant and a water-soluble organic solvent, and a black ink containing C.I.Type: ApplicationFiled: June 29, 2001Publication date: July 25, 2002Applicant: Ricoh Company, Ltd.Inventors: Akihiko Gotoh, Tomoko Maeda, Akiko Bannai, Kiyofumi Nagai, Hitoshi Arita, Tetsuya Kaneko, Nobutaka Osada, Toshiroh Tokuno, Masayuki Koyano, Kakuji Murakami
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Publication number: 20020059884Abstract: An ink composition for ink-jet printers is provided which includes a chromophore, a solvent, a co-solvent, a humectant, a surfactant, a viscosity adjuster and an additive, wherein the additive is a nitrogen-containing heterocyclic compound having formula: 1Type: ApplicationFiled: February 26, 2001Publication date: May 23, 2002Inventors: Seung-min Ryu, Seung-soon Jang
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Publication number: 20020050226Abstract: An aqueous ink comprising at least a colorant, a water-soluble organic solvent and a compound represented by general formula (I) shown below, wherein said water-soluble organic solvent stays liquid at a temperature of not higher than 40° C., exhibits a water solubility of not lower than 1% by weight at a temperature of 20° C. and a saturated vapor pressure of not higher than 1.7 Pa at a temperature of 20° C.Type: ApplicationFiled: June 21, 2001Publication date: May 2, 2002Applicant: SEIKO EPSON CORPORATIONInventors: Yasuhiro Oki, Kazuhiko Kitamura, Tetsuya Aoyama, Nobuo Uotani, Hiroshi Takahashi, Yuji Ito
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Patent number: 6379444Abstract: An organic solvent-based piezo ink is disclosed having (a) a particulate material; (b) a binder; (c) a plasticizer; (d) an organic solvent; (e) a fluorochemical surfactant; and (f) an antifoaming agent including an oil. Preferably, the particulate material is provided by an antifoaming silicone oil. Optionally, light and heat stabilizers are also included. Methods of making and using this ink are also disclosed.Type: GrantFiled: March 31, 2000Date of Patent: April 30, 2002Assignee: 3M Innovative Properties CompanyInventors: Ronald R. Adkins, Robert W. Vorwerk, Ronald K. Thery
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Publication number: 20020046680Abstract: A recording liquid for ink jet containing a solid fine particle dispersion obtained by dispersing in a medium a compound represented by the following general formula (I) or (II), and an ink jet recording method of recording using the recording liquid for ink jet containing the solid fine particle dispersion obtained by dispersing in a medium a compound represented by the following general formula (I) or (II): 1Type: ApplicationFiled: April 3, 2001Publication date: April 25, 2002Inventors: Masaki Noro, Yoshiharu Yabuki, Makoto Yamada
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Patent number: 6375732Abstract: Hybrid pigments of diketopyrrolo[3,4-c]pyrrole pigments and pigments bearing “acid” hydrogens like —NH, —OH or —CONH— groups, a process for the manufacturing of the hybrid diketopyrrolo[3,4-c]pyrrole pigments with pigments bearing “acid” hydrogens like —NH, — OH or —CONH— groups and their use as a pigment.Type: GrantFiled: March 30, 2000Date of Patent: April 23, 2002Assignee: Clariant Finance (BVI) LimitedInventors: Bansi Lal Kaul, Bruno Piastra, ValĂ©rie Wolf
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Publication number: 20020043175Abstract: There is provided a pigmented aqueous ink set which comprises:Type: ApplicationFiled: September 27, 2001Publication date: April 18, 2002Applicant: ILFORD IMAGING UK LIMITEDInventors: Nicholas Alexander Walker, Peter Edward Rose
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Patent number: 6372029Abstract: The present invention is directed to using cryoprotectants to improve freeze-thaw stability in an ink-jet ink composition.Type: GrantFiled: January 31, 2000Date of Patent: April 16, 2002Assignee: Hewlett-Packard CompanyInventor: Alexey S Kabalnov