Patents by Inventor Isao Tsuru
Isao Tsuru has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11142661Abstract: The present invention relates to an ink-jet printing method using an apparatus including a printing means for ejecting a black ink to a printing substrate to print characters or images on the printing substrate, and a drying means disposed on a downstream side of a transportation direction of the printing substrate, in which the printing substrate is a label printing substrate; the black ink is a water-based composite black ink; the water-based composite black ink contains a composite black pigment containing carbon black, and a content of the carbon black in the composite black pigment is not more than 25% by mass; and the drying means is an infrared heater for heating the water-based composite black ink ejected onto the printing substrate to a temperature of not lower than 95° C. and not higher than 125° C.Type: GrantFiled: June 15, 2018Date of Patent: October 12, 2021Assignee: KAO CORPORATIONInventors: Tomoaki Il, Isao Tsuru, Norihiro Yoshida, Yoshiharu Niizeki, Jun Tairadate, Kimiya Yamada, Hideki Sakai
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Publication number: 20200123401Abstract: The present invention relates to an ink-jet printing method using an apparatus including a printing means for ejecting a black ink to a printing substrate to print characters or images on the printing substrate, and a drying means disposed on a downstream side of a transportation direction of the printing substrate, in which the printing substrate is a label printing substrate; the black ink is a water-based composite black ink; the water-based composite black ink contains a composite black pigment containing carbon black, and a content of the carbon black in the composite black pigment is not more than 25% by mass; and the drying means is an infrared heater for heating the water-based composite black ink ejected onto the printing substrate to a temperature of not lower than 95° C. and not higher than 125° C.Type: ApplicationFiled: June 15, 2018Publication date: April 23, 2020Applicant: KAO CORPORATIONInventors: Tomoaki II, Isao TSURU, Norihiro YOSHIDA, Yoshiharu NIIZEKI, Jun TAIRADATE, Kimiya YAMADA, Hideki SAKAI
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Publication number: 20200024456Abstract: The present invention relates to [1] a process for producing a fine organic pigment, including step 1 of kneading a mixture prepared by compounding a raw material organic pigment, a water-soluble inorganic salt and a water-soluble organic solvent; and step 2 of subjecting the kneaded mixture obtained in the step 1 to cleaning treatment with an aqueous solvent and then to filtration treatment, in which before or after kneading the mixture in the step 1 and before subjecting the kneaded mixture to filtration treatment in the step 2, a sulfonic acid salt dispersant is compounded in an amount of not less than 0.8 part by mass and not more than 8.Type: ApplicationFiled: July 26, 2017Publication date: January 23, 2020Applicant: KAO CORPORATIONInventors: Hironobu FUKUROI, Yasufumi UEDA, Yusuke SHIMIZU, Isao TSURU
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Patent number: 9783680Abstract: The present invention provides the following process for producing a fine organic pigment which is capable of producing the fine organic pigment that has a very small primary particle size and is excellent in filtering property even in a cleaning step, and a fine organic pigment produced by the process; a process for producing a dispersion using the fine organic pigment, and a dispersion produced by the process; and a process for producing an ink using the dispersion. The present invention relates to [1] a process for producing a fine organic pigment, including steps 1 and 2: step 1: kneading a mixture prepared by compounding a raw material organic pigment, a water-soluble inorganic salt, a water-soluble organic solvent and a compound represented by the following formula (1) with each other, the compound being compounded in an amount of not less than 0.8 part by mass and not more than 18.Type: GrantFiled: May 14, 2014Date of Patent: October 10, 2017Assignee: KAO CORPORATIONInventors: Hironobu Fukuroi, Takahiro Sato, Isao Tsuru, Yusuke Shimizu, Yasufumi Ueda
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Publication number: 20160090483Abstract: The present invention provides the following process for producing a fine organic pigment which is capable of producing the fine organic pigment that has a very small primary particle size and is excellent in filtering property even in a cleaning step, and a fine organic pigment produced by the process; a process for producing a dispersion using the fine organic pigment, and a dispersion produced by the process; and a process for producing an ink using the dispersion. The present invention relates to [1] a process for producing a fine organic pigment, including steps 1 and 2: step 1: kneading a mixture prepared by compounding a raw material organic pigment, a water-soluble inorganic salt, a water-soluble organic solvent and a compound represented by the following formula (1) with each other, the compound being compounded in an amount of not less than 0.8 part by mass and not more than 18.Type: ApplicationFiled: May 14, 2014Publication date: March 31, 2016Applicant: KAO CORPORATIONInventors: Hironobu FUKUROI, Takahiro SATO, Isao TSURU, Yusuke SHIMIZU, Yasufumi UEDA
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Patent number: 8013053Abstract: The present invention relates to a water-based ink for ink-jet printing which exhibits a high optical density even upon one-pass printing on plain papers and is suitable for high-speed printing, and a dispersion used in the water-base ink. There are provided a water dispersion for ink-jet printing, including water-insoluble polymer particles containing a colorant, and a nonionic organic compound satisfying the following conditions I and II: I: Water containing 0.001% by weight of the nonionic organic compound has a surface tension of 70 mN/m or less as measured at 25° C.; and II: A solubility of the nonionic organic compound in 100 g of water is 0.30 g or less as measured at 25° C., a water-based ink containing the water dispersion, and a method of conducting a one-pass printing using the water-based ink.Type: GrantFiled: December 27, 2006Date of Patent: September 6, 2011Assignee: Kao CorporationInventors: Hiroyuki Yoshida, Isao Tsuru, Ryuma Mizushima
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Patent number: 7909446Abstract: There are provided a water dispersion for ink-jet printing which contains a water dispersion of particles of a vinyl polymer or a polyester-based polymer which contain a colorant (B), and a water-insoluble organic compound (A) except for aliphatic acid derivatives; a water-based ink containing the water dispersion; a print obtainable by printing images or characters with the water-based ink; and a process for producing the water dispersion. Also, there are provided an ink set for ink-jet printing containing two or more kinds of inks having different colors from each other wherein the inks each contain a water dispersion of particles of a vinyl polymer or a polyester-based polymer which contain a colorant (B), and a water-insoluble organic compound (A) except for aliphatic acid derivatives; and a process for producing a print using the ink set. The water-based ink can provide multi-order color images or composite black images which exhibits a high optical density and is excellent in gloss and image clarity.Type: GrantFiled: October 6, 2005Date of Patent: March 22, 2011Assignee: Kao CorporationInventors: Isao Tsuru, Koji Azuma, Masato Hoshi, Nobushige Tanaka, Takehiro Tsutsumi
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Patent number: 7795327Abstract: A water dispersion containing colorant-containing water-insoluble vinyl polymer particles, and a water-based ink containing the water dispersion. The water-insoluble vinyl polymer contains constitutional units of formulae (1) and (2): where R1 is a hydrogen atom or a methyl group; and R2 is a substituted or unsubstituted arylalkyl group or a substituted or unsubstituted aryl group; and where R3 is a hydrogen atom or a methyl group; R4O is an oxypropylene group; R5O is an oxyalkylene group having 2 or 4 carbon atoms; R6 is a hydrogen atom, an alkyl group or an unsubstituted or alkyl-substituted phenyl group; x is a number from 1 to 30; and y is a number from 0 to 30, and a weight ratio of the constitutional units of formula (1) to formula (2) in the polymer ranges from 1/2 to 10/1.Type: GrantFiled: August 26, 2005Date of Patent: September 14, 2010Assignee: KAO CorporationInventors: Ryuma Mizushima, Isao Tsuru, Hirotaka Takeno
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Patent number: 7749316Abstract: The present invention relates to a water dispersion for ink-jet printing, including a colorant, particles (A) (except for pigments) having a refractive index of 1.0 to 2.2, and a nonionic organic compound containing a saturated or unsaturated hydrocarbon group having 8 to 30 carbon atoms, and exhibiting a solubility of 1 g or less in 100 g of water as measured at 25° C., as well as a water based ink containing the water dispersion. There are provided a water-based ink for ink-jet printing which can exhibit a high optical density upon one-pass printing on plain papers and, therefore, is suitable for high-speed printing, as well as a water dispersion used in the water-based ink.Type: GrantFiled: February 2, 2007Date of Patent: July 6, 2010Assignee: Kao CorporationInventors: Ryuma Mizushima, Hiroyuki Yoshida, Isao Tsuru, Yusuke Shimizu
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Patent number: 7495039Abstract: The present invention relates to a water dispersion for ink jet recording, comprising water-insoluble vinyl polymer particles containing a colorant, wherein the water-insoluble vinyl polymer is a water-insoluble vinyl polymer obtained by polymerizing a monomer mixture comprising: (A) a monomer represented by the formula (I): wherein R1 represents a hydrogen atom or a methyl group, R2 represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms or a phenyl group whose hydrogen atom may be substituted with an alkyl group having 1 to 9 carbon atoms and m denotes a number from 65 to 100; (B) a salt-forming group-containing monomer; and (C) a hydrophobic monomer and the average particle diameter of the water-insoluble vinyl polymer particles containing a colorant is 0.02 to 0.50 ?m.Type: GrantFiled: June 25, 2004Date of Patent: February 24, 2009Assignee: Kao CorporationInventors: Koji Azuma, Takehiro Tsutsumi, Ryuma Mizushima, Isao Tsuru
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Publication number: 20080234407Abstract: There are provided a water-based ink for ink-jet printing which not only satisfies a high optical density but also is excellent in gloss and image clarity upon printing on a coated paper; a water dispersion used in the water-based ink; and a process for producing the water dispersion.Type: ApplicationFiled: November 18, 2005Publication date: September 25, 2008Applicant: KAO CORPORATIONInventors: Nobushige Tanaka, Isao Tsuru, Masato Hoshi, Takehiro Tsutumi
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Publication number: 20080192098Abstract: There are provided a water dispersion for ink-jet printing which contains a water dispersion of particles of a vinyl polymer or a polyester-based polymer which contain a colorant (B), and a water-insoluble organic compound (A) except for aliphatic acid derivatives; a water-based ink containing the water dispersion; a print obtainable by printing images or characters with the water-based ink; and a process for producing the water dispersion. Also, there are provided an ink set for ink-jet printing containing two or more kinds of inks having different colors from each other wherein the inks each contain a water dispersion of particles of a vinyl polymer or a polyester-based polymer which contain a colorant (B), and a water-insoluble organic compound (A) except for aliphatic acid derivatives; and a process for producing a print using the ink set. The water-based ink can provide multi-order color images or composite black images which exhibits a high optical density and is excellent in gloss and image clarity.Type: ApplicationFiled: October 6, 2005Publication date: August 14, 2008Applicant: KAO CORPORATIONInventors: Isao Tsuru, Koji Azuma, Masato Hoshi, Nobushige Tanaka, Takehiro Tsutsumi
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Patent number: 7345098Abstract: A water-based ink comprising an aqueous dispersion of polymer particles made of a water-insoluble vinyl polymer containing a colorant, wherein the water-insoluble vinyl polymer is prepared by polymerizing a monomer composition comprising a specific monomer A such as a monomer A1 represented by the formula (I): wherein R1 is hydrogen or methyl, R2 is hydrogen, alkyl or alkylphenyl, and n is 1 to 30; a monomer having a salt-forming group; and a monomer copolymerizable with the monomer A and the monomer having a salt-forming group. The water-based ink can be suitably used as a water-based ink for inkjet recording and the like.Type: GrantFiled: December 27, 2002Date of Patent: March 18, 2008Assignee: Kao CorporationInventors: Ryuma Mizushima, Isao Tsuru, Koji Azuma, Takehiro Tsutsumi
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Publication number: 20080028981Abstract: The present invention relates to a water dispersion for ink-jet printing, including a colorant, particles (A) (except for pigments) having a refractive index of 1.0 to 2.2, and a nonionic organic compound containing a saturated or unsaturated hydrocarbon group having 8 to 30 carbon atoms, and exhibiting a solubility of 1 g or less in 100 g of water as measured at 25° C., as well as a water based ink containing the water dispersion. There are provided a water-based ink for ink-jet printing which can exhibit a high optical density upon one-pass printing on plain papers and, therefore, is suitable for high-speed printing, as well as a water dispersion used in the water-based ink.Type: ApplicationFiled: February 2, 2007Publication date: February 7, 2008Applicant: Kao CorporationInventors: Ryuma Mizushima, Hiroyuki Yoshida, Isao Tsuru, Yusuke Shimizu
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Patent number: 7291659Abstract: There are provided a water dispersion for ink-jet printing comprising colorant-containing water-insoluble graft polymer particles in which the water-insoluble graft polymer contains a main chain which is a polymer chain containing a constitutional unit derived from a salt-forming group-containing monomer (a) and a constitutional unit derived from an aromatic ring-containing (meth)acrylate monomer (b), and a side chain which is a polymer chain containing a constitutional unit derived from a hydrophobic monomer (c); a water-based ink for ink-jet printing using the water dispersion; and an ink-jet printing method using the water-based ink. In accordance with the present invention, printed images or characters formed on a coated paper are excellent in gloss, image clarity and image clarity property including both of the image clarity and the gloss, and printed images or characters formed on an ordinary paper exhibit a high print density.Type: GrantFiled: July 28, 2005Date of Patent: November 6, 2007Assignee: KAO CorporationInventors: Isao Tsuru, Ryuma Mizushima, Katsuhiko Inada, Takehiro Tsutsumi
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Publication number: 20070209550Abstract: An aqueous dispersion comprising water-insoluble vinyl polymer particles containing C. I. Pigment Blue 15:4 as a colorant; and a water-based ink containing the aqueous dispersion. The water-based ink containing the aqueous dispersion can be suitably used as a water-based ink for inkjet recording and the like.Type: ApplicationFiled: May 17, 2007Publication date: September 13, 2007Applicant: Kao CorporationInventors: Isao Tsuru, Kenji Kaida
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Publication number: 20070149647Abstract: The present invention relates to a water-based ink for ink-jet printing which exhibits a high optical density even upon one-pass printing on plain papers and is suitable for high-speed printing, and a dispersion used in the water-base ink. There are provided a water dispersion for ink-jet printing, including water-insoluble polymer particles containing a colorant, and a nonionic organic compound satisfying the following conditions I and II: I: Water containing 0.001% by weight of the nonionic organic compound has a surface tension of 70 mN/m or less as measured at 25° C.; and II: A solubility of the nonionic organic compound in 100 g of water is 0.30 g or less as measured at 25° C., a water-based ink containing the water dispersion, and a method of conducting an one-pass printing using the water-based ink.Type: ApplicationFiled: December 27, 2006Publication date: June 28, 2007Inventors: Hiroyuki Yoshida, Isao Tsuru, Ryuma Mizushima
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Publication number: 20060052480Abstract: There are provided a water dispersion containing colorant-containing water-insoluble vinyl polymer particles, as well as a water-based ink containing the water dispersion. The water-insoluble vinyl polymer is a polymer containing constitutional units represented by the formulae (1) and (2): wherein R1 is a hydrogen atom or a methyl group; and R2 is a substituted or unsubstituted arylalkyl group or a substituted or unsubstituted aryl group; and wherein R3 is a hydrogen atom or a methyl group; R4O is an oxypropylene group; R5O is an oxyalkylene group having 2 or 4 carbon atoms; R6 is a hydrogen atom, an alkyl group or an unsubstituted or alkyl-substituted phenyl group; x is a number from 1 to 30; and y is a number from 0 to 30, with the proviso that a weight ratio of the constitutional units of formula (1) to formula (2) in the polymer ranges from 1/2 to 10/1.Type: ApplicationFiled: August 26, 2005Publication date: March 9, 2006Applicant: Kao CorporationInventors: Ryuma Mizushima, Isao Tsuru, Hirotaka Takeno
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Publication number: 20060030640Abstract: There are provided a water dispersion for ink-jet printing comprising colorant-containing water-insoluble graft polymer particles in which the water-insoluble graft polymer contains a main chain which is a polymer chain containing a constitutional unit derived from a salt-forming group-containing monomer (a) and a constitutional unit derived from an aromatic ring-containing (meth)acrylate monomer (b), and a side chain which is a polymer chain containing a constitutional unit derived from a hydrophobic monomer (c); a water-based ink for ink-jet printing using the water dispersion; and an ink-jet printing method using the water-based ink. In accordance with the present invention, printed images or characters formed on a coated paper are excellent in gloss, image clarity and image clarity property including both of the image clarity and the gloss, and printed images or characters formed on an ordinary paper exhibit a high print density.Type: ApplicationFiled: July 28, 2005Publication date: February 9, 2006Applicant: KAO CORPORATIONInventors: Isao Tsuru, Ryuma Mizushima, Katsuhiko Inada, Takehiro Tsutsumi
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Patent number: 6979365Abstract: An ink set comprising at least one anionic chromatic colored ink and at least one cationic chromatic colored ink; and a recording process comprising the step of printing with an ink set comprising at least one anionic chromatic colored ink and at least one cationic chromatic colored ink. The ink set can be suitably used for a printer for inkjet recording or the like.Type: GrantFiled: March 5, 2004Date of Patent: December 27, 2005Assignee: Kao CorporationInventors: Isao Tsuru, Takehiro Tsutsumi