Patents by Inventor Shuichi Kataoka
Shuichi Kataoka 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: 8496747Abstract: It is an object of the present invention to provide an ink set which makes it possible to obtain recorded images that have a broad color reproduction range and a high saturation, as well as glossiness without conspicuous graininess caused by dot expression, and which in particular makes it possible to achieve an extreme suppression of graininess caused by dot expression in cases where the ink set is used on media that have a coating layer, and to obtain recorded images with extremely superior coloring characteristics in cases where the ink set is used on ordinary paper. The present invention provides an ink set comprising at least a yellow ink (Y), magenta ink (M), cyan ink (C) and red ink (R), wherein the L* values in the CIE-stipulated Lab display system of aqueous solutions of the respective inks diluted 1000 times by weight are in the following ranges: (Y): at least 89 but no more than 94, (M): at least 76 but no more than 93, (C): at least 74 and no more than 87, (R): at least 55 and no more than 74.Type: GrantFiled: October 12, 2010Date of Patent: July 30, 2013Assignee: Seiko Epson CorporationInventor: Shuichi Kataoka
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Patent number: 7981209Abstract: There is provided an ink composition for ink jet recording that is free from feathering or bleeding and, at the same time, can realize high-gloss images particularly advantageous when the ink composition is recorded on specialty papers. The ink composition comprises at least a colorant, water, and a surfactant, wherein the surfactant satisfies a requirement represented by formula (I) ????0??(I) wherein (i) ? represents contact angle of a recording medium with an aqueous solution containing 0.1% by weight of the surfactant 0.3 sec after the contact of the aqueous solution with the recording medium, degree; and (ii) ? represents contact angle of a recording medium with an aqueous solution containing 0.1% by weight of the surfactant, 20% by weight of glycerin, 10% by weight of 1,2-hexanediol and 1.0% by weight of triethanolamine 0.3 sec after the contact of the aqueous solution with the recording medium, degree.Type: GrantFiled: February 24, 2006Date of Patent: July 19, 2011Assignee: Seiko Epson CorporationInventors: Shuichi Kataoka, Hironori Sato
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Patent number: 7976149Abstract: It is an object of the present invention to provide an ink set that has a wide color reproduction range, has high saturation, produces a glossy recorded image with no pronounced granularity caused by dot expression, greatly suppresses granularity caused by dot expression particularly when applied to a medium having a coating layer, and allows a recorded image with outstanding coloration to be obtained when applied to plain paper. The present invention provides an ink set comprising at least yellow ink (Y), magenta ink (M), cyan ink (C), and red ink (R), wherein the L* values in the Lab colorimetric system specified by CIE for aqueous solutions of each ink diluted 1000 times are within the following ranges. (Y): at least 89 and no more than 94, (M): at least 76 and no more than 93, (C): at least 74 and no more than 87, (R): at least 55 and no more than 74.Type: GrantFiled: September 1, 2009Date of Patent: July 12, 2011Assignee: Seiko Epson CorporationInventor: Shuichi Kataoka
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Patent number: 7964655Abstract: Disclosed is a liquid composition that, while maintaining good color developing properties and gloss, can realize good cleaning operation without staying of the liquid composition in a cleaning cap. The liquid composition is adapted for use with an ink composition for deposition on a recording medium and comprises a modified polyallylamine, a water soluble organic solvent, and water and is free from any colorant. The liquid composition and an ink composition each are deposited onto a recording medium to perform recording. A polymer comprising a recurring unit represented by formula (I) is used as the modified polyallylamine.Type: GrantFiled: February 17, 2004Date of Patent: June 21, 2011Assignee: Seiko Epson CorporationInventors: Shuichi Kataoka, Kiyohiko Takemoto, Mitsumasa Hashimoto, Minoru Takeuchi
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Patent number: 7959725Abstract: It is an object of the present invention to provide an ink set which makes it possible to obtain recorded images that have a broad color reproduction range and a high saturation, as well as glossiness without conspicuous graininess caused by dot expression, and which in particular makes it possible to achieve an extreme suppression of graininess caused by dot expression in cases where the ink set is used on media that have a coating layer, and to obtain recorded images with extremely superior coloring characteristics in cases where the ink set is used on ordinary paper. The present invention provides an ink set comprising at least a yellow ink (Y), magenta ink (M), cyan ink (C) and red ink (R), wherein the L* values in the CIE-stipulated Lab display system of aqueous solutions of the respective inks diluted 1000 times by weight are in the following ranges: (Y): at least 89 but no more than 94, (M): at least 76 but no more than 93, (C): at least 74 and no more than 87, (R): at least 55 and no more than 74.Type: GrantFiled: November 4, 2003Date of Patent: June 14, 2011Assignee: Seiko Epson CorporationInventors: Yuko Yamamoto, Shuichi Kataoka, Takeshi Tanoue, Shinichi Kato, Tsuyoshi Sano
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Publication number: 20110083581Abstract: It is an object of the present invention to provide an ink set which makes it possible to obtain recorded images that have a broad color reproduction range and a high saturation, as well as glossiness without conspicuous graininess caused by dot expression, and which in particular makes it possible to achieve an extreme suppression of graininess caused by dot expression in cases where the ink set is used on media that have a coating layer, and to obtain recorded images with extremely superior coloring characteristics in cases where the ink set is used on ordinary paper. The present invention provides an ink set comprising at least a yellow ink (Y), magenta ink (M), cyan ink (C) and red ink (R), wherein the L* values in the CIE-stipulated Lab display system of aqueous solutions of the respective inks diluted 1000 times by weight are in the following ranges: (Y): at least 89 but no more than 94, (M): at least 76 but no more than 93, (C): at least 74 and no more than 87, (R): at least 55 and no more than 74.Type: ApplicationFiled: October 12, 2010Publication date: April 14, 2011Inventor: Shuichi Kataoka
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Patent number: 7772298Abstract: Ink jet recording is carried out using an ink set including a clear ink composition that contains polymer fine particles and does not contain a colorant, a yellow ink composition, a magenta ink composition, a cyan ink composition, a red ink composition, a violet ink composition, and a black ink composition, whereby a high-quality recorded article having excellent recorded image coloration and glossiness can be obtained.Type: GrantFiled: November 23, 2004Date of Patent: August 10, 2010Assignee: Seiko Epson CorporationInventors: Shuichi Kataoka, Kiyohiko Takemoto, Shinichi Kato
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Publication number: 20090315962Abstract: It is an object of the present invention to provide an ink set that has a wide color reproduction range, has high saturation, produces a glossy recorded image with no pronounced granularity caused by dot expression, greatly suppresses granularity caused by dot expression particularly when applied to a medium having a coating layer, and allows a recorded image with outstanding coloration to be obtained when applied to plain paper. The present invention provides an ink set comprising at least yellow ink (Y), magenta ink (M), cyan ink (C), and red ink (R), wherein the L* values in the Lab colorimetric system specified by CIE for aqueous solutions of each ink diluted 1000 times are within the following ranges. (Y): at least 89 and no more than 94, (M): at least 76 and no more than 93, (C): at least 74 and no more than 87, (R): at least 55 and no more than 74.Type: ApplicationFiled: September 1, 2009Publication date: December 24, 2009Inventor: Shuichi KATAOKA
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Publication number: 20090317607Abstract: It is an object of the present invention to provide an ink set that has a wide color reproduction range, has high saturation, produces a glossy recorded image with no pronounced granularity caused by dot expression, greatly suppresses granularity caused by dot expression particularly when applied to a medium having a coating layer, and allows a recorded image with outstanding coloration to be obtained when applied to plain paper. The present invention provides an ink set comprising at least yellow ink (Y), magenta ink (M), cyan ink (C), and red ink (R), wherein the L* values in the Lab colorimetric system specified by CIE for aqueous solutions of each ink diluted 1000 times are within the following ranges. (Y): at least 89 and no more than 94, (M): at least 76 and no more than 93, (C): at least 74 and no more than 87, (R): at least 55 and no more than 74.Type: ApplicationFiled: September 1, 2009Publication date: December 24, 2009Inventor: Shuichi Kataoka
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Publication number: 20090317606Abstract: It is an object of the present invention to provide an ink set that has a wide color reproduction range, has high saturation, produces a glossy recorded image with no pronounced granularity caused by dot expression, greatly suppresses granularity caused by dot expression particularly when applied to a medium having a coating layer, and allows a recorded image with outstanding coloration to be obtained when applied to plain paper. The present invention provides an ink set comprising at least yellow ink (Y), magenta ink (M), cyan ink (C), and red ink (R), wherein the L* values in the Lab colorimetric system specified by CIE for aqueous solutions of each ink diluted 1000 times are within the following ranges. (Y): at least 89 and no more than 94, (M): at least 76 and no more than 93, (C): at least 74 and no more than 87, (R): at least 55 and no more than 74.Type: ApplicationFiled: September 1, 2009Publication date: December 24, 2009Inventor: Shuichi Kataoka
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Ink set, recording method using the ink set, recording device, recording system, and recorded object
Patent number: 7600864Abstract: It is an object of the present invention to provide an ink set that has a wide color reproduction range, has high saturation, produces a glossy recorded image with no pronounced granularity caused by dot expression, greatly suppresses granularity caused by dot expression particularly when applied to a medium having a coating layer, and allows a recorded image with outstanding coloration to be obtained when applied to plain paper. The present invention provides an ink set comprising at least yellow ink (Y), magenta ink (M), cyan ink (C), and red ink (R), wherein the L* values in the Lab colorimetric system specified by CIE for aqueous solutions of each ink diluted 1000 times are within the following ranges. (Y): at least 89 and no more than 94, (M): at least 76 and no more than 93, (C): at least 74 and no more than 87, (R): at least 55 and no more than 74.Type: GrantFiled: November 4, 2003Date of Patent: October 13, 2009Assignee: Seiko Epson CorporationInventor: Shuichi Kataoka -
Publication number: 20090176068Abstract: There is provided an ink composition for ink jet recording that is free from feathering or bleeding and, at the same time, can realize high-gloss images particularly advantageous when the ink composition is recorded on specialty papers. The ink composition comprises at least a colorant, water, and a surfactant, wherein the surfactant satisfies a requirement represented by formula (I) ????0??(I) wherein (i) ? represents contact angle of a recording medium with an aqueous solution containing 0.1% by weight of the surfactant 0.3 sec after the contact of the aqueous solution with the recording medium, degree; and (ii) ? represents contact angle of a recording medium with an aqueous solution containing 0.1% by weight of the surfactant, 20% by weight of glycerin, 10% by weight of 1,2-hexanediol and 1.0% by weight of triethanolamine 0.3 sec after the contact of the aqueous solution with the recording medium, degree.Type: ApplicationFiled: February 24, 2006Publication date: July 9, 2009Inventors: Shuichi Kataoka, Hironori Sato
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Patent number: 7547747Abstract: The present invention relates to a polyallylamine-based high-molecular-weight polymer which is easily soluble in water and in an organic solvent and gives an excellently stable aqueous solution or organic solvent solution thereof which is suitable for use in the fields of fine chemicals such as the field of inkjet recording, and the polymer is a modified polyallylamine obtained by modifying a copolymer of N,N-dialkylallylamine and allylamine.Type: GrantFiled: February 17, 2004Date of Patent: June 16, 2009Assignee: Nitto Boseki Co., Ltd.Inventors: Mitsumasa Hashimoto, Minoru Takeuchi, Shuichi Kataoka, Kiyohiko Takemoto
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Patent number: 7524892Abstract: It is an object of the present invention to provide a pigment dispersion, an ink composition, and an ink set, enabling excellent glossiness, bronzing prevention, and ink composition storage stability to be realized. The present invention provides a pigment dispersion characterized by comprising at least a pigment, an aqueous medium, a copolymer resin between a hydrophobic monomer and a hydrophilic monomer, and a urethane resin, and also an ink composition characterized by containing at least the pigment dispersion and an aqueous medium, and an ink set characterized by comprising at least the ink composition.Type: GrantFiled: April 12, 2004Date of Patent: April 28, 2009Assignees: Seiko Epson Corporation, Mikuni Shikiso Kabushiki KaishaInventors: Shuichi Kataoka, Bunji Ishimoto, Akira Mizutani, Naoki Okamoto, Yoshiaki Miyazaki, Izumi Yasuda, Tomoyuki Shiraga
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Patent number: 7427641Abstract: There is provided an ink composition which can yield records possessing excellent rubbing/abrasion resistance and scratch resistance. Specifically, records possessing excellent rubbing/abrasion resistance and scratch resistance can be produced by using an ink composition comprising: an alkali-soluble copolymer; water; a colorant; and at least one member selected from the group consisting of wax, a viscosity modifier, and a wetting agent. The alkali-soluble copolymer is a copolymer, with an acid value of not more than 40, which is produced by polymerizing an ethylenically unsaturated carboxylic acid monomer and other monomer copolymerizable with the ethylenically unsaturated carboxylic acid monomer in the presence of an alcoholic hydroxyl-containing water-soluble polymer compound or a copolymerizable surfactant and has been adjusted to a pH value, at which the copolymer is soluble in water, by the addition of an inorganic base.Type: GrantFiled: December 27, 2002Date of Patent: September 23, 2008Assignee: Seiko Epson CorporationInventors: Shuichi Kataoka, Kazuhide Kubota, Kazuaki Watanabe, Kiyohiko Takemoto
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Patent number: 7414751Abstract: Colors look differently when observed under sunlight and room light. At least three chromatic colors and additional chromatic colors differing in hue from said three colors are used in combination. The additional colors are those which have a spectral reflectance which smoothens waviness in the spectral reflectance curve of the nearly achromatic color produced by the combination of the three chromatic colors. As the result, the combination of the colors gives rise to a color which has almost uniform spectral reflectance over the entire region of wavelengths. Thus it is possible to obtain printing which is less vulnerable to change in color under different light sources.Type: GrantFiled: January 9, 2003Date of Patent: August 19, 2008Assignee: Seiko Epson CorporationInventors: Satoshi Yamazaki, Yoshifumi Arai, Shuichi Kataoka
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Patent number: 7381756Abstract: It is an object of the present invention to provide an ink set which has a superior effect in suppressing gloss unevenness of printed images, and which thus makes it possible to obtain images that have a uniform gloss. The present invention achieves this object by providing an ink set comprising one or more color ink compositions containing a pigment as a coloring agent and a dispersing resin that is used to disperse this pigment, and one or more clear ink compositions which contain an aqueous polymer but which contain no coloring agent, wherein the dispersing resin and the aqueous polymer belong to a common category so that the 60° specular gloss (according to JIS Z 8741) of the printed images that are formed by the abovementioned color ink compositions and/or the abovementioned clear ink composition is substantially uniform.Type: GrantFiled: January 22, 2003Date of Patent: June 3, 2008Assignee: Seiko Epson CorporationInventors: Shinichi Kato, Shuichi Kataoka, Kiyohiko Takemoto
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Patent number: 7348368Abstract: A pigment-dispersed aqueous recording liquid containing at least a pigment and a resin, which comprises from 60 to 200 parts by weight of the resin to 100 parts by weight of the pigment, wherein at least one of the resin is a water-dispersible urethane type resin, a weight fraction of a polyurethane urea part of which is at most 2.0 wt % to the urethane resin, and the pigment dispersed in the recording liquid has a dispersion particle size D50 of from 40 to 100 nm.Type: GrantFiled: March 3, 2004Date of Patent: March 25, 2008Assignees: Mitsubishi Chemical Corporation, Seiko Epson Corporation, Mikuni Shikiso Kabushiki KaishaInventors: Munetaka Kakiuchi, Shuichi Kataoka, Takashi Oyanagi, Kimihiko Ohya, Seiji Kamamasu
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Patent number: 7328863Abstract: The present invention provides a counterweight and a counterweight-recycling method capable of having excellent workability, capable of reducing manufacturing costs, and capable of achieving environmental conservation. A metal portion contained in slag produced in an iron making process or in residue in a waste treatment furnace is used as a weight material of a counterweight (10).Type: GrantFiled: August 26, 2002Date of Patent: February 12, 2008Assignee: Shin Caterpillar Mitsubishi Ltd.Inventors: Norio Nakajima, Shuichi Kataoka, Hiroshi Kumamoto
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Publication number: 20060264533Abstract: Disclosed is a liquid composition that, while maintaining good color developing properties and gloss, can realize good cleaning operation without staying of the liquid composition in a cleaning cap. The liquid composition is adapted for use with an ink composition for deposition on a recording medium and comprises a modified polyallylamine, a water soluble organic solvent, and water and is free from any colorant. The liquid composition and an ink composition each are deposited onto a recording medium to perform recording. A polymer comprising a recurring unit represented by formula (I) is used as the modified polyallylamine.Type: ApplicationFiled: February 17, 2004Publication date: November 23, 2006Applicant: SEIKO EPSON CORPORATIONInventors: Shuichi Kataoka, Kiyohiko Takemoto, Mitsumasa Hashimoto, Minoru Takeuchi