Plural Acyclic Azo Group Component Containing Patents (Class 106/31.52)
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Patent number: 7267715Abstract: An ink obtained by dissolving at least one specific dye in an aqueous medium, wherein the dyes contained in the ink all have a solubility of 15 g or more in 100 g of water at 25° C. under atmospheric pressure; and an ink set formed from the ink. The dye is preferably a dye having an oxidation potential of 1.0 V (vs SCE) or more, more preferably a specific azo dye having a heterocyclic group of a specific structure or an aromatic group which is bound directly to an azo group, or a specific phthalocyanine dye having a water-soluble group as a substitunet. According to the present invention, an ink, specifically an inkjet ink, and an ink set, which can print an image without disorder or beading due to ejection failure and ensure excellent ejection stability and durability, is provided.Type: GrantFiled: March 26, 2004Date of Patent: September 11, 2007Assignee: Fujifilm CorporationInventors: Toshiki Taguchi, Naotaka Wachi
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Patent number: 7264663Abstract: Ink set for ink jet printing consisting of at least one yellow ink, one magenta ink, one cyan ink and one black ink, wherein the magenta ink contains, as first dye component, at least one dye of formula (I) wherein R2 and Aryl are as defined in the specification, or of formula (II) wherein M, R1 and Aryl are as defined in the specification and, as second dye component, at least one copper complex azo dye of formula (III) or of formula (IV) wherein M, R1, R2, R3, R4, R5, R6 and R7 are as defined in the specification.Type: GrantFiled: March 23, 2005Date of Patent: September 4, 2007Assignee: Ilford Imaging Switzerland GmbHInventors: Jean-Luc Gremaud, Arnd Kriebel
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Patent number: 7256222Abstract: To provide a radiation-curable ink composition that can form a high-quality image on not only liquid absorbing materials to be recorded but also non-liquid absorbing materials to be recorded, is superior in curing properties in air, and is superior in storage stability, color tone, light fastness and water resistance of ink, and also to provide an image recording method. The radiation-curable ink composition comprises a monomer having a polymerizable group selected from the group consisting of an acryloyl group, a methacryloyl group, an allyl group, and a vinyl group, an oil-soluble dye, and from 0.005 to 1% by weight of a storage stabilizer, wherein the oil-soluble dye is dissolved in the ink.Type: GrantFiled: January 29, 2003Date of Patent: August 14, 2007Assignee: Fujifilm CorporationInventors: Takahiro Ishizuka, Kazue Sano, Junichi Yamanouchi, Keiichi Tateishi
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Patent number: 7252707Abstract: An inkjet recording ink set comprising at least two inks, wherein each of the inks contains at least one dye having an anionic group, and even when any two inks in the ink set are mixed, precipitation of the dye does not occur.Type: GrantFiled: March 23, 2004Date of Patent: August 7, 2007Assignee: Fujifilm CorporationInventors: Takashi Ozawa, Toshiki Taguchi
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Patent number: 7250079Abstract: The invention provides a water-soluble ink capable of forming an image having good color hue and high fastness in various use and environmental conditions, which comprises a coloring composition comprising a disazo dye represented by the following formula 1: A1-N?N-A2-N?N-A3 and at least one other dye having a specific structure; in formula 1, A1, A2 and A3 each independently represents an aromatic group which may be substituted or a heterocyclic group which may be substituted, and A1 and A3 each is a monovalent group and A2 is a divalent group.Type: GrantFiled: January 7, 2004Date of Patent: July 31, 2007Assignee: Fujifilm CorporationInventors: Tomohiro Chino, Toshiki Fujiwara, Masaru Takasaki
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Patent number: 7247196Abstract: To provide an ink jet black ink which has a favorable tint for ink jet black ink, provides high ozone fastness, a high image density, and high sticking recovery property, and is capable of suppressing the decomposition of a compound represented by the following general formula (I) or a salt thereof at the time of storage for a long time period. The ink jet black ink is an ink jet black ink comprising at least a compound represented by the following general formula (I) or a salt thereof as a coloring material, and ethylene glycol or diethylene glycol, wherein the content of ethylene glycol or diethylene glycol is 15 mass % or more and 30 mass % or less with respect to the total mass of the ink jet black ink.Type: GrantFiled: February 27, 2006Date of Patent: July 24, 2007Assignee: Canon Kabushiki KaishaInventors: Shin-ichi Sato, Jun Yoshizawa, Kunihiko Nakamura, Kumiko Mafune, Hideki Takayama, Daiji Okamura
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Patent number: 7220843Abstract: This invention relates to monoazo, disazo and trisazo colorants of the formula (I) where M represents two hydrogen atoms or one metal ion selected from the group consisting of Cu, Co, Ni, Mn, Zn and Al; A is the radical of a substituted naphthyl or pyrazolyl radical.Type: GrantFiled: March 31, 2004Date of Patent: May 22, 2007Assignee: Clariant Produkte (Deutschland) GmbHInventors: Dominique Pflieger, Hans Joachim Metz
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Patent number: 7220302Abstract: Provided are an inkjet ink prepared by dissolving or dispersing a specific dye in an aqueous medium and containing one of at least one alkylene diol where one alkylene group has at least 3 carbon atoms or homologue thereof and at least one polymer compound; and an ink set containing an ink including a specific dye and an ink including one compound capable of interacting with the dye; thereby being able to provide an ink and the like having a good jet-out stability, and forming images of good quality with neither beading nor bronzing, and the images formed of the inks have good fastness to heat, light and ozone.Type: GrantFiled: March 29, 2004Date of Patent: May 22, 2007Assignee: Fujifilm CorporationInventor: Toshiki Taguchi
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Patent number: 7211132Abstract: To provide an ink set capable of recording images with good ozone fastness on a recording medium, an ink set of the present invention comprises at least a yellow ink composition, a magenta ink composition, and a cyan ink composition. The cyan ink composition contains at least one of the compounds expressed by formula (1) below as a cyan dye: and the magenta ink composition contains, as a colorant, at least one substance selected from the group consisting of compounds expressed by formula (2) below: and salts thereof (in formula (2), A represents an alkylene group, an alkylene group containing a phenylene group, or a group expressed by formula (3) below: and X represents a group selected from the group consisting of NH2, OH, and Cl).Type: GrantFiled: September 28, 2004Date of Patent: May 1, 2007Assignee: Seiko Epson CorporationInventors: Yasuhiro Oki, Kazuhiko Kitamura, Tetsuya Aoyama, Masahiro Hanmura, Hiroshi Fukumoto
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Patent number: 7211133Abstract: The invention provides an inkjet black ink ensuring excellent image durability capable of satisfactorily maintaining the image quality such as non-loosening of black and gradation even when the image is stored for a long period of time, which is a inkjet black ink having a discoloration rate constant (kvis) of 5.0×10?2 [hour?1] or less, which is measured by using an ozone gas, the ink comprising an aqueous medium having dissolved or dispersed therein at least one dye selected from (1) an azo dye having a specific structure where a heterocyclic group is bonded to both of two N atoms, (2) a phthalocyanine dye having a specific structure, (3) an azo dye having a specific structure where a 5-membered heterocyclic group is bonded to one of two N atoms and a 6-membered 2-amino heterocyclic group is bonded to the other, and (4) a bisazo dye constituted by a specific aromatic or heterocyclic group and an azo group.Type: GrantFiled: November 18, 2003Date of Patent: May 1, 2007Assignee: Fujifilm CorporationInventor: Toshiki Taguchi
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Patent number: 7198665Abstract: It is an object of the present invention to provide a black ink for an ink jet which possesses preferable color as a black ink for an ink jet, can attain high ozone resistance, high image density and sticking recovery property, and can suppress the decomposition of the compound represented by the general formula (I) or salt thereof during long-term storage. According to the present invention, there is provided a black ink for an ink jet characterized by comprising at least a compound represented by the following general formula (I) or a salt thereof, characterized in that the black ink comprises at least one moisture-retaining nitrogen compound, and the pH of the ink and the pH of the ink after storing for 10 days in an environment at a temperature of 60° C. are 9.5 or less.Type: GrantFiled: December 30, 2005Date of Patent: April 3, 2007Assignee: Canon Kabushiki KaishaInventors: Kunihiko Nakamura, Shin-ichi Sato, Jun Yoshizawa, Kumiko Mafune, Hideki Takayama, Daiji Okamura
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Patent number: 7198664Abstract: An object of the present invention is to provide an ink jet black ink by which an image quality comparable to that of a silver halide photograph is obtained with a compatibility between a high fastness and a high image quality when the ink is printed on a recording medium, and which is excellent in optical density and color tone particularly in half tone, and is also excellent in gas resistance.Type: GrantFiled: January 26, 2006Date of Patent: April 3, 2007Assignee: Canon Kabushiki KaishaInventors: Kumiko Mafune, Hideki Takayama, Daiji Okamura
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Patent number: 7192475Abstract: An aqueous ink comprising at least two dyes each having at least one ionic hydrophilic group in a molecule thereof, wherein at least one of said at least two dyes includes an azo dye represented by formula (1): wherein A and B each independently represents a substituted or unsubstituted monovalent aromatic group; or a substituted or unsubstituted monovalent heterocyclic group; R1 represents a hydrogen atom; a substituted or unsubstituted aromatic group; or a substituted or unsubstituted heterocyclic group; and X represents —CR2? or a nitrogen atom, and when X represents —CR2?, R2 represents a hydrogen atom or a substituent.Type: GrantFiled: December 14, 2004Date of Patent: March 20, 2007Assignee: Fuji Photo Film Co., Ltd.Inventors: Masaru Takasaki, Toshiki Fujiwara, Tomohiro Chino
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Patent number: 7186292Abstract: A coloring composition such as printing ink for inkjet printing or the like or electrophotographic color toner is provided, which can give a colored image or material excellent in the color hue and fastness, and also provide an inkjet recording method capable of forming an image having good color hue and high fastness to light and active gases in the environment, particularly ozone gas, and which is an inkjet ink comprising an azo dye having a specific structure containing an alkyl chain having 4 to more carbon atoms and not containing an ionic hydrophilic group; an inkjet recording method using the ink; and a color toner composition comprising the above-described azo dye.Type: GrantFiled: January 7, 2004Date of Patent: March 6, 2007Assignee: Fuji Photo Film Co., Ltd.Inventors: Yoshiharu Yabuki, Tomohiro Chino, Toshiki Fujiwara
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Patent number: 7173114Abstract: A lightfast colorant and a lightfast ink composition including the lightfast colorant utilize a lightfast colorant that is derived by covalently binding a cinnamate derivative and a conventional colorant. The lightfast colorant improves storage stability as well as lightfastness when added to an ink composition.Type: GrantFiled: February 6, 2004Date of Patent: February 6, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Kyung-hoon Lee, Seung-min Ryu, Yeon-Kyoung Jung
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Patent number: 7160377Abstract: Aqueous, colloidal gas black suspension containing: (a) a gas black, (b) an azo compound of the formula 1 (c) and water. The aqueous, colloidal gas black suspension is produced by dispersing the gas black and the azo compound of the formula 1 in water. It can be used in the production of inks, ink-jet inks, surface coatings and colored printing inks.Type: GrantFiled: November 5, 2003Date of Patent: January 9, 2007Assignee: Degussa AGInventors: Heinz Zoch, Werner Kalbitz, Stephan Lüdtke, Thomas Lüthge, Ralph McIntosh, Gerd Tauber
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Patent number: 7144452Abstract: The present invention aims to provide an ink jet black ink which can improve weatherability, optical density and sticking recovery property of nozzles of a recording head. According to the present invention, an ink jet black ink is provided which comprises at least a coloring-material and a water-soluble organic solvent, wherein the coloring material is a compound represented by the following general formula (I) or a salt thereof, and the water-soluble organic solvent is a water-soluble organic solvent having a relative permittivity of from 30.0 or more to less than 70.0 at 20° C. and capable of dissolving the compound represented by the following general formula (I) or a salt thereof, by 1.0 mass % or more at 25° C., and is in a content of 50.Type: GrantFiled: December 30, 2005Date of Patent: December 5, 2006Assignee: Canon Kabushiki KaishaInventors: Hideki Takayama, Kumiko Mafune, Daiji Okamura, Shin-ichi Sato, Jun Yoshizawa, Kunihiko Nakamura
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Patent number: 7141106Abstract: A composition comprising: (a) a liquid medium; and (b) a compound comprising one or more chromophoric groups and one or more hydrazine or hydrazide groups; wherein the liquid medium comprises water and an organic solvent, an organic solvent free from water, or a low melting point solid. The composition is useful for ink jet printing.Type: GrantFiled: February 27, 2002Date of Patent: November 28, 2006Assignee: Fujifilm Imaging Colorants LimitedInventors: Paul Wight, Prakash Patel
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Patent number: 7141105Abstract: The present invention relates to a water-based fluorescent ink for the purpose of measurement or judgment of the fluorescence emission in a visible light region by an excitation wavelength in a predetermined ultraviolet range, containing water, a coloring material dissolved or dispersed in water, and an organic solvent, having a plurality of fluorescent groups in the coloring material structure of the coloring material, and using a water-soluble coloring material having a sulfonic acid group as the water-soluble group in the state of a free acid, capable of improving the water resistance and the light resistance, dramatically increasing the content of the fluorescent coloring material in the ink, which has conventionally been included only by a small amount in the ink due to the concentration quenching problem, obtaining preferable fluorescence emission and water resistance of the recorded image, and providing preferable adhesion resistance to the recording medium of the coloring material and reliability.Type: GrantFiled: October 29, 2004Date of Patent: November 28, 2006Assignee: Canon Kabushiki KaishaInventors: Masako Udagawa, Shoji Koike, Makoto Aoki, Akira Nagashima, Shinichi Hakamada
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Patent number: 7132516Abstract: This invention relates to coppered azo dyestuffs containing an alkyl-, aryl or alkoxyalkyl sulfamyl group on one moiety of the molecule and an alkyl-, aryl or alkoxyalkyl ammonium sulfonate or carboxylate group on the other moiety. The invention also relates to various intermediates, to compositions and to processes for preparing the metalized dyestuffs. The compounds are particularly suited for the application in laquers, ink-jet inks and electrographic toners.Type: GrantFiled: January 29, 2003Date of Patent: November 7, 2006Assignee: Clariant Finance (BVI) LimitedInventor: Dominique Pflieger
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Patent number: 7128779Abstract: An ink jet ink includes at least a coloring material. The coloring material is at least one of C.I. Food Black 2 and C.I.Type: GrantFiled: February 27, 2006Date of Patent: October 31, 2006Assignee: Canon Kabushiki KaishaInventors: Koichi Osumi, Sadayuki Sugama
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Patent number: 7125443Abstract: A lightfast colorant and a lightfast ink composition include a lightfast colorant that is derived by covalently binding a benzophenone derivative and a conventional colorant and that imparts effective lightfastness and long-term storage stability to an ink composition that is prepared with the same.Type: GrantFiled: March 18, 2004Date of Patent: October 24, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Kyung-hoon Lee, Seung-min Ryu, Yeon-kyoung Jung
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Patent number: 7115162Abstract: To provide an aqueous ink, particularly, an inkjet recording ink, and an inkjet recording method, which can form an image having good color hue and excellent fastness to light and active gases in the environment, particularly, ozone gas, the aqueous ink has a polyazo dye containing at least two azo groups, an ionic hydrophilic group, and a sulfur-containing 5-membered heterocyclic group; and an inkjet recording ink and an inkjet recording method each using the aqueous ink.Type: GrantFiled: December 14, 2004Date of Patent: October 3, 2006Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiki Fujiwara, Yoshiharu Yabuki
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Patent number: 7097700Abstract: A water-soluble complex dye capable of forming an image having light resistance, ozone resistance and high saturation; a water-based recording fluid, particularly an ink jet recording fluid, employing such a dye; and an ink jet recording method, are presented.Type: GrantFiled: December 29, 2004Date of Patent: August 29, 2006Assignee: Mitsubishi Chemical CorporationInventor: Wataru Shimizu
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Patent number: 7097702Abstract: Disclosed are novel dyestuff for printing recording materials, especially textile fiber materials, paper and papery substrates and plastic films and plastic transparencies by the inkjet printing process of the formula (I) wherein all substituents are defined in the claims.Type: GrantFiled: December 18, 2002Date of Patent: August 29, 2006Assignee: Clariant Finance (BVI) LimitedInventor: Ludwig Hasemann
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Patent number: 7094277Abstract: A dye for ink-jet printing on both hydrophilic and hydrophobic papers. The dye includes a chromophore tonically coupled to a counterion. One of the chromophore and the counterion includes a hydrophilic moiety. The other includes a hydrophobic moiety.Type: GrantFiled: October 31, 2001Date of Patent: August 22, 2006Assignee: Hewlett-Packard Development Company, L.P.Inventors: David M. Schut, Christian Schmid
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Patent number: 7094279Abstract: The present invention provides a black water-based ink composition that has excellent resistance to light and ozone, has an excellent hue as a black ink, and also has excellent storage stability. A black water-based ink composition is prepared by combining at least one type of black dye selected from the group consisting of compounds expressed by the following formula (1) and salts thereof: and at least one type of dye other than a black dye, and the hue is adjusted by adding the dye other than a black dye. It is preferable if the dye other than the black dye is a compound that has at least one type of group selected from the group consisting of an —SO3H group, —COOH group, —SO3M group, and —COOM group (where M in these groups is an alkali metal atom), and is not an ammonium salt or a salt with an organic cation. It is also preferable for the dye other than the black dye to be a dye selected from the group consisting of yellow dyes and magenta dyes.Type: GrantFiled: November 22, 2004Date of Patent: August 22, 2006Assignee: Seiko Epson CorporationInventors: Masahiro Hanmura, Tetsuya Aoyama, Kazuhiko Kitamura
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Patent number: 7094281Abstract: The present invention provides a black ink composition obtained by mixing at least one colorant selected from the group consisting of a compound represented by the following formula (1) and a salt thereof, one or more organic acids and one or more organic bases: wherein R1 represents a phenyl group having a substituent group or a naphthyl group having a substituent group, R2 represent a phenylene group having a substituent group or a naphthylene group having a substituent group, R3 represents a 5- to 7-membered heterocyclic ring having at least one double bond and substituent group, and further, the above-mentioned substituent groups in the above-mentioned R1 to R3 are each independently selected from the group consisting of OH, SO3H, PO3H2, CO2H, NO2, NH2, a C1–4 alkyl group, a C1–4 alkyl group having a substituent group, a C1–4 alkoxyl group, a C1–4 alkoxyl group having a substituent group, an amino group, an amino group having a substituent group and a phenyl group having a substituent group.Type: GrantFiled: August 6, 2004Date of Patent: August 22, 2006Assignee: Seiko Epson CorporationInventors: Masahiro Hanmura, Tetsuya Aoyama
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Patent number: 7094280Abstract: A water-soluble complex dye capable of forming an image having light resistance, ozone resistance and high saturation; a water-based recording fluid, particularly an ink jet recording fluid, employing such a dye; and an ink jet recording method, are presented.Type: GrantFiled: December 20, 2004Date of Patent: August 22, 2006Assignee: Mitsubishi Chemical CorporationInventors: Wataru Shimizu, Masahiro Yamada
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Patent number: 7083670Abstract: An aqueous ink comprising at least one dye having at least one ionic hydrophilic group within a molecule thereof and represented by the following formula (1): wherein A and B each independently represents a substituted or unsubstituted monovalent aromatic group or a substituted or unsubstituted monovalent heterocyclic group, R1 represents a substituted or unsubstituted aromatic group excluding an unsubstituted phenyl group or a substituted or unsubstituted heterocyclic group, and R2 represents a substituent.Type: GrantFiled: September 15, 2004Date of Patent: August 1, 2006Assignee: Fuji Photo Film Co., Ltd.Inventors: Masaru Takasaki, Toshiki Fujiwara, Tomohiro Chino
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Patent number: 7083664Abstract: An inkjet color ink comprising: an aqueous medium; at least one yellow dye having a ?max of from 390 nm to 470 nm and an [I(?max+70 nm)/I(?max)] ratio of an absorbance I(?max+70 nm) at ?max+70 nm to an absorbance I(?max) at ?max of not more than 0.4; and at least one dye having a ?max of longer than 470 nm and not longer than 750 nm, the at least one yellow dye and the at least one dye being at least dissolved or dispersed in the aqueous medium, wherein both of the rate constants defined herein are not more than 5.0×10?2 hour?1.Type: GrantFiled: November 18, 2003Date of Patent: August 1, 2006Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiki Taguchi, Naotaka Wachi
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Patent number: 7083671Abstract: In accordance with embodiments of the present invention, an ink-jet ink can comprise a liquid vehicle including a halophenol and a metallized dye. Alternatively, a system for printing images with improved ozone fastness can comprise a printing medium including an ink-receiving layer coated thereon, wherein the ink-receiving layer includes semi-metal oxide or metal oxide particulates, and an ink-jet ink configured for printing on printing medium. The ink-jet ink can comprise a liquid vehicle including a protonated phenol devoid of water solubilizing moieties, and a metallized dye.Type: GrantFiled: July 16, 2004Date of Patent: August 1, 2006Assignee: Hewlett-Packard Development Company, L.P.Inventors: Linda C. Uhlir-Tsang, John R. Moffatt
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Patent number: 7066991Abstract: 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 NaType: GrantFiled: October 28, 2003Date of Patent: June 27, 2006Assignee: Eastman Kodak CompanyInventors: James W. Blease, LuAnn K. Weinstein
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Patent number: 7060123Abstract: A novel fluorescent ink is provided which contains at least a coloring material and an aqueous liquid medium for dissolving the coloring material, wherein the coloring material comprises C.I. Acid Red 52 and at least one direct dye, the content of the C.I. Acid Red 52 ranging from 0.1 to 0.4% by weight based on the total amount of the ink, and the content of the direct dye ranging from 0.15 to 0.4% by weight based on the total amount of the ink, and the weight ratio of the direct dye to the C.I. Acid Red 52 is not higher than 1.6. This fluorescent ink is capable of forming prints with fluorescence of high intensity and with high water resistance.Type: GrantFiled: November 12, 2004Date of Patent: June 13, 2006Assignee: Canon Kabushiki KaishaInventors: Shinichi Hakamada, Shoji Koike, Akira Nagashima
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Patent number: 7060124Abstract: The invention relates to a dye mixture consisting essentially of one dye of formula (4) and a dye of formula (5).Type: GrantFiled: July 5, 2002Date of Patent: June 13, 2006Assignee: Clariant GmbHInventors: Andreas Wuzik, Josef Geisenberger, Heidemarie Menzel
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Patent number: 7056376Abstract: A process for printing an image on a substrate comprising applying thereto a composition comprising a liquid medium and a compound of Formula (1): T-Q-N?N-L-T??Formula (1) wherein: each T independently is an azo group; Q is an optionally substituted, optionally metallised 1,8-dihydroxynaphthyl group; and L is a divalent organic linker group. Also claimed are compositions and dyes.Type: GrantFiled: April 11, 2003Date of Patent: June 6, 2006Assignee: Avecia LimitedInventors: Ajay Haridas Popat, Alan Dickinson, Maria Soteri Hadjisoteriou, Neil James Thompson, Paul Wight, Peter Gregory, Roy Bradbury, Philip John Double, Thomas Paul
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Patent number: 7056373Abstract: 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.Type: GrantFiled: October 28, 2003Date of Patent: June 6, 2006Assignee: Eastman Kodak CompanyInventors: James W. Blease, LuAnn K. Weinstein
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Patent number: 7048790Abstract: Provided is a black ink for inkjet recording obtained by dissolving and/or dispersing, in an aqueous medium, at least one black azo dye having a specific property or structure and further containing at least one metal chelating agent, which is excellent in durability of image including image quality and discharge property even after the ink is filled in an ink cassette and stored for a long period of time while being set in a printer.Type: GrantFiled: September 29, 2003Date of Patent: May 23, 2006Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiki Taguchi, Toshiaki Aono
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Patent number: 7037365Abstract: The present invention provides an ink set, in which in ink jet recording, an ejection stability is enhanced, hues, light resistance and water resistance of an image obtained are made excellent, and image keeping quality under severe conditions is improved, wherein the color ink set comprising a plurality of inks different in hues in order to record on a recording medium, the ink set comprising as a black ink at least a specified coloring agent, which has a ?max of 500 nm to 700 nm and a half value width in an absorption spectrum of a dilute solution normalized to an absorbance of 100 nm or more, an ink cartridge containing the same, an ink jet printer carrying them, and an image recording method.Type: GrantFiled: August 22, 2003Date of Patent: May 2, 2006Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiki Taguchi, Yoshiharu Yabuki, Tomohiro Chino, Naotaka Wachi
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Patent number: 7033425Abstract: 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.Type: GrantFiled: April 15, 2004Date of Patent: April 25, 2006Assignee: Eastman Kodak CompanyInventors: James W. Blease, Steven Evans, Joan C. Potenza
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Patent number: 7029523Abstract: A black ink for ink-jet recording, which is excellent in durability of image (including durability of image quality) and discharging property, obtained by dissolving and/or dispersing at least one black azo dye having a particular property or structure in an aqueous medium, wherein a transition metal ion content of the black ink is 0.1 mmol/l or less.Type: GrantFiled: September 29, 2003Date of Patent: April 18, 2006Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiki Taguchi, Naotaka Wachi
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Patent number: 7025815Abstract: A water-soluble complex dye capable of forming an image having light resistance, ozone resistance and high saturation; a water-based recording fluid, particularly an ink jet recording fluid, employing such a dye; an ink set employing such a recording fluid; and an ink jet recording method, are presented.Type: GrantFiled: December 7, 2004Date of Patent: April 11, 2006Assignee: Mitsubishi Chemical CorporationInventors: Wataru Shimizu, Mio Ishida, Hideo Sano, Yukichi Murata
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Patent number: 7011699Abstract: The invention provides an inkjet ink which exhibits, at the printing particularly on paper, excellent ink permeability to eliminate the problem of soiling immediately after printing, can be polymerized in higher sensitivity after printing and enables the recording of an image excellent in water resistance and light fastness through polymerization curing, the inkjet ink comprising a coloring fine particle dispersion containing coloring fine particles and at least one oil-soluble dye, a polymerizable hydrophobic ethylenic unsaturated monomer and a polymerization initiator, the at least one oil-soluble dye having an oxidation potential of 1.0 V or more.Type: GrantFiled: November 26, 2003Date of Patent: March 14, 2006Assignee: Fuji Photo Film Co., Ltd.Inventors: Junichi Yamanouchi, Takahiro Ishizuka, Yoshiharu Yabuki
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Patent number: 7005004Abstract: Aqueous, colloidal gas black suspension, containing a gas black, an azo compound of formula 1, and water. The aqueous, colloidal gas black suspensions is produced in that the gas black and the azo compound of general formula 1 are dispersed in water. It may be used to produce inks, ink jet inks, paints, printing inks, latices, textiles, leather, adhesives, silicones, plastics materials, concrete and construction materials.Type: GrantFiled: March 30, 2004Date of Patent: February 28, 2006Assignee: Degussa AGInventors: Werner Kalbitz, Gerd Tauber, Heinz Zoch, Stephan Lüdtke, Thomas Lüthge, Ralph Mcintosh
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Patent number: 6997978Abstract: The present invention is drawn to magenta dye blends and magenta ink-jet inks that can be used in ink sets for creating photo quality images. The dye blend can comprise a nickel-containing azo dye blended with a rhodamine dye at a 1:80 to 125:4 weight ratio.Type: GrantFiled: July 18, 2003Date of Patent: February 14, 2006Assignee: Hewlett-Packard Development Company, L.P.Inventors: Alexey S Kabalnov, Charles G. Dupuy, Patricia A Wang
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Patent number: 6991676Abstract: The present invention is drawn to dye sets for formulating ink-jet ink sets, and to specific ink sets. The dye set can comprise cyan colorant including a phthalocyanine dye; magenta colorant including a copper- or nickel-containing azo dye; and yellow colorant including at least one of Yellow 1189 dye and Yellow 104 dye yellow colorant having the structure Formula 1: wherein R1 is H, SO3M, COOM, or SO2NH2; and wherein R2 is H, SO3M, COOM, or SO2NH2; and wherein R3 is H or CH3; and wherein n and m are 2, 3, 4, 5 or 6; and wherein M is H, Na, Li, K, ammonium, ammonium substituted with alkyl or combinations thereof. Optionally, a cyan triarylmethine dye such as Acid Blue 9, or another similar cyan dye, can be blended with the phthalocyanine dye; a rhodamine dye can be blended with the copper- or nickel-containing azo dye; and/or Acid Yellow 17 or Acid Yellow 23 can be blended with Formula 1.Type: GrantFiled: July 18, 2003Date of Patent: January 31, 2006Assignee: Hewlett-Packard Development Company, L.P.Inventors: Alexey S Kabalnov, Charles G. Dupuy, Luanne J. Rolly, Naomi Oak, Patricia A Wang
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Patent number: 6964700Abstract: An ink for use in ink jet recording which contains a dye and a pigment as colorants. The pigment is a self-dispersible pigment in which at least one anionic group is bonded directly or through another atomic group to a surface of the pigment, the dye is an anionic dye, 2-pyrrolidone is further contained in the ink as a solvent, and the mass-based content X of 2-pyrrolidone in the ink and the ratio Y of the pigment to the sum of the dye and the pigment satisfy the following formulas 1 to 3 at the same time: 12?X<30??formula 1 50?Y?75??formula 2 Y??2X+84??formula 3.Type: GrantFiled: April 23, 2004Date of Patent: November 15, 2005Assignee: Canon Kabushiki KaishaInventors: Ayako Uji, Noribumi Koitabashi, Yoshihisa Yamashita, Ryota Kato, Takeshi Miyazaki, Yasunori Fujimoto
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Patent number: 6923855Abstract: An ink, which contains at least one dye of formula (1): A—N?N—BX1n1B?—N?N—A???Formula (1) wherein A and A? each independently represent an aryl group or a monovalent heterocyclic group; B and B? each independently represent an arylene group or a divalent heterocyclic group; X1 represents a divalent linking group; n1 is 0 or 1; and at least one of A, B, A?, and B? is a heterocyclic group.Type: GrantFiled: August 1, 2003Date of Patent: August 2, 2005Assignee: Fuji Photo Film Co., Ltd.Inventors: Toru Harada, Naotaka Wachi
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Patent number: 6863719Abstract: An ink composition comprising: a self-dispersing carbon black, a binder, a stabilizing dye comprising at least as many groups comprising CO2H or COSH as groups comprising SO3H, and an aqueous vehicle. The stabilizing dye can improve the reliability and performance of the ink composition. The addition of the stabilizing dye can reduce or prevent the formation of material that blocks the printhead vias and throats as a result of the presence of a binder in the ink. The ink composition can reduce the amount of maintenance needed to retain all of a printhead's nozzles through the life of the printhead.Type: GrantFiled: December 30, 2002Date of Patent: March 8, 2005Assignee: Lexmark International, Inc.Inventors: Susan H. Butler, Meagan C. Winkler
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Patent number: 6858069Abstract: To provide a black aqueous ink composition for excellent light and gas fastness, an ink set including the ink composition, and an ink jet recording process using the same, the black aqueous ink composition contains at least a trisazo dye represented by Chemical Formula 31.Type: GrantFiled: October 24, 2002Date of Patent: February 22, 2005Assignees: Seiko Epson Corporation, Orient Chemical IndustriesInventors: Tetsuya Aoyama, Kazuhiko Kitamura, Hiroshi Fukumoto, Yoshihiro Sawatari, Shuji Sugawara, Makiko Matsui