The Nitrogen Is Part Of An Acyclic Azo Group Patents (Class 106/31.51)
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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: 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: 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: 7125966Abstract: The present invention relates to novel dyestuffs of formula (I) wherein the substituents have the meanings defined in the claims, the production of such dyestuffs, the use of these dyestuffs and material dyed or printed by such dyestuffsType: GrantFiled: October 17, 2003Date of Patent: October 24, 2006Assignee: Clariant Finance (BVI) LimitedInventor: Robert Egli
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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: 7101983Abstract: The present invention relates to novel dyestuffs of formula (I) wherein the substituents have the meanings defined in the claims, the production of such dyestuffs, the use of these dyestuffs and material dyed or printed by such dyestuffs.Type: GrantFiled: April 2, 2002Date of Patent: September 5, 2006Assignee: Clariant Finance (BVI) LimitedInventors: Robert Egli, Oliver Eich, Knut Göke
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Patent number: 7097699Abstract: A composition for printing recording materials comprising a) at least one temporarily water-soluble dye with one SO2CH2COOM group being present in the molecule; b) water or a medium including a mixture of water and an organic solvent, an anhydrous organic solvent or a solid having a low melting point, and c) optionally further additives.Type: GrantFiled: December 18, 2002Date of Patent: August 29, 2006Assignee: Clariant Finance (BVI) LimitedInventors: Robert Egli, Oliver Eich, Hans-Tobias Macholdt, Reinhard Pedrazzi
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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: 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: 7066993Abstract: The invention relates to a colorant composition that substantially comprises a colorant of formula (1) and a colorant formula (2) or (3). The magenta colorant mixture is advantageously used in ink-jet printing and yields storage-stable and water-proof ink formulations.Type: GrantFiled: February 12, 2002Date of Patent: June 27, 2006Assignee: Clariant GmbHInventors: Andreas Wuzik, Josef Geisenberger, Heidemarie Menzel
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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: 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: 7041162Abstract: The present invention provides an aqueous ink composition comprising a color microparticle dispersion including an oil-soluble dye, a hydrophilic organic solvent and a perfluoroalkylenesulfonic acid or a fluorine type surfactant other than derivatives thereof, and an ink jet method for recording an image by using this aqueous ink composition.Type: GrantFiled: August 7, 2003Date of Patent: May 9, 2006Assignee: Fuji Photo Film Co., Ltd.Inventors: Takahiro Ishizuka, Kenji Ikeda
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Patent number: 7025817Abstract: An ink-jet ink comprises water, a water-soluble coloring material having a molecular weight of 600 or less as a free acid form, at least two kinds of water-soluble organic solvents, and urea or a derivative thereof. The vapor pressures at 25° C. of the at least two kinds of water-soluble organic solvents are lower than that of water. The water-soluble organic solvents include a water-soluble organic solvent A and a water-soluble organic solvent B. The solubility of the water-soluble coloring material in the water-soluble organic solvent A is higher than its solubility in water, while its solubility in the water-soluble organic solvent B is equal to or lower than its solubility in water. The difference between the solubilities of the water-soluble coloring material in the water-soluble organic solvent A and in the water-soluble organic solvent B is 10% or more.Type: GrantFiled: February 7, 2005Date of Patent: April 11, 2006Assignee: Canon Kabushiki KaishaInventors: Tsuyoshi Kanke, Hiroshi Tomioka, Hiroyuki Takuhara, Shinichi Tochihara
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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: 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: 6929688Abstract: Monoazo dyes of general formula (IV) wherein R1, R2, R3, X, M and n are as described in the specification, are excellent dyes for dyeing and printing of cellulose containing materials and textile materials and especially for the preparation of inks for ink jet printing.Type: GrantFiled: May 23, 2003Date of Patent: August 16, 2005Assignee: Ilford Imaging Switzerland GmbHInventors: Kurt Baettig, Thomas Stauner
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Patent number: 6872243Abstract: Disclosed is a phase change ink composition comprising an ink vehicle, a colorant, and a nonpolymeric organic gelator selected from the group consisting of anthracene-based compounds, steroid compounds, partially fluorinated high molecular weight alkanes, high molecular weight alkanes with exactly one hetero atom, chiral tartrate compounds, chiral butenolide-based compounds, bis-urea compounds, guanines, barbiturates, oxamide compounds, ureidopyrimidone compounds, and mixtures thereof, said organic gelator being present in the ink in an amount of no more than about 20 percent by weight of the ink, said ink having a melting point at or below which the ink is a solid, said ink having a gel point at or above which the ink is a liquid, and said ink exhibiting a gel state between the melting point and the gel point, said ink exhibiting reversible transitions between the solid state and the gel state upon heating and cooling, said ink exhibiting reversible transitions between the gel state and the liquid state uponType: GrantFiled: September 4, 2002Date of Patent: March 29, 2005Assignee: Xerox CorporationInventors: Marcel P. Breton, Danielle C. Boils-Boissier, Donald R. Titterington, Jule W. Thomas, Jr., Jeffrey H. Banning, Christine E. Bedford, James D. Wuest
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Patent number: 6843839Abstract: Magenta ink exhibiting excellent coloration on various recording materials is provided according to the present invention. The magenta ink can realize high image densities and can produce images having superior light resistance.Type: GrantFiled: June 4, 2001Date of Patent: January 18, 2005Assignee: Canon Kabushiki KaishaInventors: Tsuyoshi Kanke, Takao Yamamoto, Kumiko Mafune, Hisashi Teraoka, Yuko Yakushigawa
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Patent number: 6843838Abstract: The present invention provides inkjet inks, dye sets, and inkjet ink sets for use in inkjet printing methods. The inkjet inks and inkjet ink sets of the present invention can provide excellent photo-realistic print quality while achieving a high level of lightfastness. The inkjet ink comprises: a xanthene dye, and a metallized azo dye having the Formula (I). The inkjet ink set comprises: a magenta dye set comprising a xanthene dye, and a metallized azo dye having the Formula (I), at least one yellow ink comprising at least one yellow dye, and at least one cyan ink comprising at least one cyan dye. The present invention also provides a method of printing using the inkjet ink set of the present invention.Type: GrantFiled: December 31, 2002Date of Patent: January 18, 2005Assignee: Lexmark International, Inc.Inventors: Agnes Kam Zimmer, John M. Medley, Vladimir Kantorovich, Wendell Lake, Sandra Helton McCain
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Publication number: 20040244642Abstract: An ink for use in ink jet recording which contains a dye and a pigment as colorants.Type: ApplicationFiled: April 23, 2004Publication date: December 9, 2004Applicant: Canon Kabushiki KaishaInventors: Ayako Uji, Noribumi Koitabashi, Yoshihisa Yamashita, Ryota Kato, Takeshi Miyazaki, Yasunori Fujimoto
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Patent number: 6824598Abstract: An ink set for ink-jet printing, having at least one ink of the ink set comprising a light dye load and a dark dye load with both the light dye load and the dark dye load being one color. The one color is selected from magenta, cyan, yellow and black; and the light dye load being at least one of air fade resistant, light fade resistant and humid color migration resistant. The invention also relates to a method of inkjet printing with such a method.Type: GrantFiled: December 3, 2002Date of Patent: November 30, 2004Assignee: Hewlett-Packard Development Company, L.P.Inventors: Matthew Thornberry, Eric L Burch, John L Stoffel
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Patent number: 6808555Abstract: The present invention provides inkjet ink compositions having high chroma and lightfastness characteristics as well as methods for the making and use thereof In one aspect of the present invention, the ink composition may include a mixture of an effective amount of a rhodamine dye and an effective amount of a metalized magenta dye in an ink vehicle. In an additional aspect of the invention, and image formed using the ink composition of the present invention may achieve a chroma of at least about 57 and a lightfastness of at least about 5 years.Type: GrantFiled: January 30, 2002Date of Patent: October 26, 2004Assignee: Hewlett-Packard Development Company, L.P.Inventors: Patricia A Wang, Alexey S Kabalnov
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Publication number: 20040187734Abstract: 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: ApplicationFiled: March 23, 2004Publication date: September 30, 2004Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Takashi Ozawa, Toshiki Taguchi
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Patent number: 6793722Abstract: Inkjet ink composition with high chroma. The inkjet ink composition includes 0.1 to 15 weight % of Acid Red 92; at least one red colorant other than Acid Red 92; and an aqueous solution medium. By means of the addition of Acid Red 92, the chroma of magenta color of the ink composition is increased.Type: GrantFiled: December 20, 2002Date of Patent: September 21, 2004Assignee: Benq CorporationInventors: Chia-Hsin Chien, In-Shan Sir, Yu-Ting Lin
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Patent number: 6764541Abstract: Disclosed is a colorant composition of the formula wherein R is an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group, and wherein R can be joined to the phenyl moiety to form a ring, R′ is an aromatic- or heteroaromatic-containing group, each Ra, independently of the others, is a halogen atom, an alkyl group, an alkoxy group, a nitrile group, a nitro group, an amide group, or a sulfonamide group, w is an integer of 0, 1, 2, 3, or 4, n is an integer representing the number of carbon atoms in each repeat alkylene oxide unit, and x is an integer representing the number of repeat alkylene oxide units, wherein said colorant has no more than one —OH, —SH, or primary or secondary amino group per molecule.Type: GrantFiled: April 24, 2003Date of Patent: July 20, 2004Assignee: Xerox CorporationInventors: Jeffery H. Banning, Donald R. Titterington, Clifford R. King
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Publication number: 20040138335Abstract: The present invention provides an aqueous ink composition including a hydrophilic organic solvent, a surfactant, and a colored fine particle dispersion which contains an oil-soluble dye, and exhibiting a dynamic surface tension of 25 to 35 mN/m, as well as an ink-jet recording method including a step of carrying out recording using the aqueous ink composition.Type: ApplicationFiled: July 21, 2003Publication date: July 15, 2004Inventors: Kenji Ikeda, Takahiro Ishizuka
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Publication number: 20040128775Abstract: The invention relates to a dye mixture essentially consisting of one dye of formula (4) and a dye of formula (5). The black dye mixture is advantageously used for ink jet printing and provides high light-resisting and neutral black ink formulations.Type: ApplicationFiled: November 21, 2003Publication date: July 8, 2004Inventors: Andreas Wuzik, Josef Geisenberger, Heidemarie Menzel
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Publication number: 20040123772Abstract: The present invention provides inkjet inks, dye sets, and inkjet ink sets for use in inkjet printing methods. The inkjet inks and inkjet ink sets of the present invention can provide excellent photo-realistic print quality while achieving a high level of lightfastness. The inkjet ink comprises: a xanthene dye, and a metallized azo dye having the Formula (I). The inkjet ink set comprises: a magenta dye set comprising a xanthene dye, and a metallized azo dye having the Formula (I), at least one yellow ink comprising at least one yellow dye, and at least one cyan ink comprising at least one cyan dye. The present invention also provides a method of printing using the inkjet ink set of the present invention.Type: ApplicationFiled: December 31, 2002Publication date: July 1, 2004Inventors: Agnes Zimmer, John M. Medley, Vladimir Kantrovich, Wendell Lake, Sandra McCain
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Publication number: 20040103820Abstract: A 2-methoxyphenol derivative and an ink composition containing the 2-methoxyphenol derivative, an aqueous medium, and a colorant enhance light resistance by absorbing ultraviolet (UV) light, provide wettability and stabilize a colorant. The ink composition prepared using the 2-methoxyphenol derivative also has improved light resistance, wettability and stabilizes a colorant and does not require an additional light-resistant agent.Type: ApplicationFiled: November 12, 2003Publication date: June 3, 2004Applicant: SAMSUNG Electronics Co., Ltd.Inventors: Yeon-Kyoung Jung, Seung-Min Ryu
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Publication number: 20040083924Abstract: Compouns of formula (I) 1Type: ApplicationFiled: August 1, 2003Publication date: May 6, 2004Inventor: Martin Oberholzer
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Publication number: 20040074018Abstract: The invention relates to a colorant composition that substantially comprises a colorant of formula (1) and a colorant formula (2) or (3). The magenta colorant mixture is advantageously used in ink-jet printing and yields storage-stable and water-proof ink formulations.Type: ApplicationFiled: August 11, 2003Publication date: April 22, 2004Inventors: Andreas Wuzik, Josef Geisenberger, Heidemarie Menzel
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Publication number: 20040065227Abstract: Disclosed is a phase change ink composition comprising an ink vehicle, a colorant, and a nonpolymeric organic gelator selected from the group consisting of anthracene-based compounds, steroid compounds, partially fluorinated high molecular weight alkanes, high molecular weight alkanes with exactly one hetero atom, chiral tartrate compounds, chiral butenolide-based compounds, bis-urea compounds, guanines, barbiturates, oxamide compounds, ureidopyrimidone compounds, and mixtures thereof, said organic gelator being present in the ink in an amount of no more than about 20 percent by weight of the ink, said ink having a melting point at or below which the ink is a solid, said ink having a gel point at or above which the ink is a liquid, and said ink exhibiting a gel state between the melting point and the gel point, said ink exhibiting reversible transitions between the solid state and the gel state upon heating and cooling, said ink exhibiting reversible transitions between the gel state and the liquid state uponType: ApplicationFiled: September 4, 2002Publication date: April 8, 2004Applicant: Xerox CorporationInventors: Marcel P. Breton, Danielle C. Boils-Boissier, Donald R. Titterington, Jule W. Thomas, Jeffrey H. Banning, Christine E. Bedford, James D. Wuest
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Patent number: 6712890Abstract: A water soluble compound of Formula (1) or a salt thereof: wherein: Y is an electron withdrawing group; Y1 is H, alkyl or aryl, OR or NR2 in which each R independently is H, optionally substituted alkyl or optionally substituted aryl; or Y and Y1 together form a 5- or 6- membered ring; X1 is a group or atom with co-ordinates with M; M is hexa co-ordinate metal; G is a group of Formula (2), (3) or (4); and L1, L2 and L3, each independently represent ligands required to complete hexa-coordinate geometry around metal M; wherein: S is a water solubilizing group; Ar is a benzene or naphthalene group in which X is located ortho to the azo group; X is a group or atom which co-ordinates with M; Z provides atoms or groups which complete an optionally substituted 5- or 6-membered aromatic heterocyclic ring; Ring A is an optionally substituted aromatic ring; Ring B is an optionally substituted 5- or 6-membered aromatic heterocyclic ring; n is 0, 1, 2 or 3; and the * signify the points of attachment of tType: GrantFiled: January 18, 2002Date of Patent: March 30, 2004Assignee: Avecia LimitedInventors: Maria Soteri Hadjisoteriou, Rachel Anne James
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Patent number: 6709502Abstract: Monoazo dyes of formulas (IV) wherein R1, R2, R3, m, n and M are as described in the specification, are excellent dyes for dyeing and printing of cellulose containing materials and especially for the preparation of inks for ink jet printing.Type: GrantFiled: December 17, 2001Date of Patent: March 23, 2004Assignee: Ilford Imaging Switzerland GmbHInventor: Kurt Baettig
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Patent number: 6706100Abstract: The present invention provides an ink set, an ink jet recording apparatus, an ink jet recording method, a recording unit, and an ink cartridge, which can produce ink jet color images in which the color balance does not easily become unstable even if the image is stored for a long time, and in which the color images have greater durability so that degradation of the visual appearance is not easily recognizable even if the image is stored for a long time. The ink set includes a first aqueous ink and a second aqueous ink having the same color tone, the second ink having a lower coloring material content than that of the first ink, and the degree of fading of an image produced with the second ink is the same as or lower than that of an image produced with the first ink.Type: GrantFiled: June 4, 2001Date of Patent: March 16, 2004Assignee: Canon Kabushiki KaishaInventors: Kumiko Mafune, Tsuyoshi Kanke
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Patent number: 6706104Abstract: An ink set which comprises a black ink containing an aqueous medium and a pigment dispersed in the aqueous medium by an action of an ionic group, and at least two color inks each containing a coloring material and an aqueous medium, wherein (i) respective images formed with the respective color inks have the same &Dgr;E or have the difference in &Dgr;E that is 10 or less in a CIELAB color space display system in a fading test under conditions that cause fading corresponding to pseudo-indoor sunlight fading through a window for 3 years or more, and (ii) at least one of the color inks contains at least one of a coloring material and an additive that destabilize dispersion stability of the pigment in the black ink. The ink set can provide a high quality multicolor image keeping color balance after long preservation and showing less bleeding between black and color regions.Type: GrantFiled: August 31, 2001Date of Patent: March 16, 2004Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Takuhara, Yoshihisa Takizawa, Kumiko Mafune, Hisashi Teraoka, Yoichi Takada, Noriyasu Asaki, Yuko Takada, Tsuyoshi Kanke
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Patent number: 6702882Abstract: An ink set includes inks each containing a colorant and an aqueous medium, wherein in a fading test under conditions that cause fading corresponding to pseudo-indoor sunlight fading through a window for 3 years or more, the difference between respective images' &Dgr;E, the images being produced with the respective inks, is 10 or less in a CIELAB color space display system, and each of the images has a residual ratio of reflection density of 70% or more. By using the ink set including the color inks with which images having substantially the same fading &Dgr;E after long-term storage are produced, the color balance of a recorded image can be maintained after long-term storage.Type: GrantFiled: June 20, 2001Date of Patent: March 9, 2004Assignee: Canon Kabushiki KaishaInventors: Yuko Yakushigawa, Yoshihisa Takizawa, Kumiko Mafune, Hisashi Teraoka, Tsuyoshi Kanke
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Publication number: 20040035322Abstract: The present invention provides an aqueous ink composition comprising a color microparticle dispersion including an oil-soluble dye, a hydrophilic organic solvent and a perfluoroalkylenesulfonic acid or a fluorine type surfactant other than derivatives thereof, and an ink jet method for recording an image by using this aqueous ink composition.Type: ApplicationFiled: August 7, 2003Publication date: February 26, 2004Inventors: Takahiro Ishizuka, Kenji Ikeda
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Patent number: 6685768Abstract: A color inkjet ink set for color printing having: (a) a yellow ink having a carrier and a yellow dye; (b) a magenta ink having a carrier and a mixture of a water-soluble, magenta anthrapyridone dye and Reactive Red 23, Reactive Red 24, Reactive Red 31, Reactive Red 120, Reactive Red 180, Reactive Red 241, Acid Red 35, Acid Red 52, Acid Red 249, Acid Red 289, Acid Red 388, Direct Red 227 or CAS No. 153204-88-7; and (c) a cyan ink having a carrier and a cyan dye.Type: GrantFiled: August 1, 2001Date of Patent: February 3, 2004Assignee: Eastman Kodak CompanyInventors: James W. Blease, Elizabeth A. Gallo
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Patent number: 6669740Abstract: Dye preparations comprising, based in each case on the weight of the preparation, from 0.1 to 30% by weight of one or more dyes from the class of the mono- or polyazo dyes containing no acidic groups, from 0.1 to 20% by weight of a dispersant based on an arylsulfonic acid-formaldehyde condensate or from 0.1 to 20% by weight of a water-soluble dispersant based on alkoxylated phenols with or without water, and their use as inks in the inkjet process and for textile sublimation transfer printing.Type: GrantFiled: November 6, 2002Date of Patent: December 30, 2003Assignee: BASF AktiengesellschaftInventors: Karl Siemensmeyer, Bernd Siegel, Volker Bach, Manfred Herrmann, Günther König, Rüdiger Sens
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Publication number: 20030221588Abstract: Monoazo dyes of general formula (IV) 1Type: ApplicationFiled: May 23, 2003Publication date: December 4, 2003Applicant: ILFORD IMAGING SWITZERLAND GmbH.Inventors: Kurt Baettig, Thomas Stauner
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Patent number: 6648951Abstract: A waterfast, environmentally friendly ink-jet ink, is disclosed comprising from 1% to 90% by weight of a first humectant selected from the group consisting of glycerol, propanediol, and combinations thereof; from 1% to 25% by weight of a second humectant selected from the group consisting of ethylene glycol, diethylene glycol, propylene glycol, and combinations thereof; from 1% to 20% by weight of a drying agent selected from the group consisting of 1,2-hexanediol, 1,2-pentanediol, and combinations thereof; from 0% to 20% by weight of 2-pyrrolidone; from 0.05% to 10.0% by weight of a waterfastness control dye selected from the group consisting of azo-containing dyes and phthalocyanine-containing dyes; and at least one additional dye present at from about 1.0% to 10.0% by weight. If the waterfastness control dye is an azo-containing dye, such dyes can include Direct Red 227, Direct Red 254, Direct Yellow 86, and Acid Orange 7.Type: GrantFiled: September 4, 2001Date of Patent: November 18, 2003Assignee: Hewlett-Packard Development Company, L.P.Inventors: Xiaohe Chen, David Tyvoll, George M. Sarkisian
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Publication number: 20030177944Abstract: Compounds of the formula I 1Type: ApplicationFiled: February 13, 2003Publication date: September 25, 2003Inventors: Klaus Kunde, Stefan Ehrenberg
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Publication number: 20030159616Abstract: The present invention provides inkjet ink compositions having high chroma and lightfastness characteristics as well as methods for the making and use thereof In one aspect of the present invention, the ink composition may include a mixture of an effective amount of a rhodamine dye and an effective amount of a metalized magenta dye in an ink vehicle. In an additional aspect of the invention, and image formed using the ink composition of the present invention may achieve a chroma of at least about 57 and a lightfastness of at least about 5 years.Type: ApplicationFiled: January 30, 2002Publication date: August 28, 2003Inventors: Patricia A. Wang, Alexey S. Kabalnov
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Patent number: 6607588Abstract: Novel addition products of hydroxyl-protecting groups (such as isocyanates) with oxyalkylene-substituted intermediates, such as poly(oxyalkylenated) aniline compounds, for the eventual production of substituted, and substantially pure, colorants, particularly diazo and triphenylmethane derivatives, through the reaction of such intermediates with certain reactants are provided. These new colorants exhibit improved wax and/or oil solubility and high purity, particularly due to the inability of certain impurities to deleteriously react with the protected hydroxyl groups of either the intermediate or the colorant during and/or after formation thereof. A method for producing such novel colorants through utilization of these novel substantially pure colorant intermediates is also provided.Type: GrantFiled: September 6, 2001Date of Patent: August 19, 2003Assignee: Milliken & Co.Inventor: Rajnish Batlaw
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Patent number: 6596067Abstract: A colorant mixture of C.I. Acid Red 289 and C.I. Reactive Red 23 and optionally a shading colorant is used for magenta recording fluids.Type: GrantFiled: July 3, 2001Date of Patent: July 22, 2003Assignee: Clariant GmbHInventors: Heidemarie Menzel, Josef Geisenberger, Andreas Wuzik