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公开(公告)号：US11254828B2
公开(公告)日：2022-02-22
申请号：US16957262
申请日：2018-12-27
申请人： KAO CORPORATION
IPC分类号： C09D11/037 , B41M1/10 , B41F9/10
摘要： The present invention relates to a gravure printing method of conducting printing on a printing substrate with an aqueous ink reserved in an ink pan using a furnisher roll, a gravure roll, a doctor blade and a nip roll, in which the aqueous ink contains a pigment, a polymer, an organic solvent, a surfactant and water; a content of organic solvent components of the organic solvent which have a boiling point of 100 to 260° C. in the aqueous ink is not less than 0.3% by mass and not more than 12% by mass; an average particle size of particles of the pigment is from 120 to 350 nm; and an arithmetic mean roughness (Ra) of a plate surface of the gravure roll is from 10 to 140 nm. According to the present invention, it is possible to improve transfer properties of the ink to the printing substrate such as a resin film, etc., and suppress fogging on the plate surface.
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公开(公告)号：US10829651B2
公开(公告)日：2020-11-10
申请号：US15756341
申请日：2016-08-03
发明人： Tatsuo Shigeta , Ryuma Mizushima , Yuta Matsumoto , Yasufumi Ueda
IPC分类号： C09D11/03 , C09D11/033 , C09D11/023 , C09D11/037
摘要： Provided is an aqueous gravure ink that is environmentally friendly, allows high-resolution printing by virtue of its excellent highlight suitability, and is excellent in drying property. The aqueous gravure ink comprises: a pigment; a polymer; a water-soluble organic solvent; a surfactant; and water, in which the water-soluble organic solvent has a boiling point of 100° C. or more and 260° C. or less, in which a content of the water-soluble organic solvent in the aqueous gravure ink is 10 mass % or more and 35 mass % or less, and in which a content of the water in the aqueous gravure ink is 50 mass % or more and 70 mass % or less.
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公开(公告)号：US10549565B2
公开(公告)日：2020-02-04
申请号：US16076471
申请日：2016-09-28
发明人： Koji Kutsuwa , Yasufumi Ueda , Takayuki Suzuki
摘要： An inkjet recording medium having an ink receiving layer containing an inorganic pigment, starch, and copolymer latex on at least one surface of a base, characterized in that the inorganic pigment contains engineered calcium carbonate and kaolin, an amount of the engineered calcium carbonate is from 50% by weight or more to less than 80% by weight and an amount of the kaolin is from 10% by weight or more to less than 50% by weight with respect to a total amount of the inorganic pigment, and from 1 parts by weight or more to 10 parts by weight or less of an organic pigment having a glass transition temperature (Tg) of 20° C. or more is contained in the ink receiving layer with respect to 100 parts by weight of the inorganic pigment.
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公开(公告)号：US11072197B2
公开(公告)日：2021-07-27
申请号：US16485298
申请日：2018-02-15
申请人： KAO CORPORATION
发明人： Ryuma Mizushima , Yuta Matsumoto , Yasufumi Ueda
摘要： The present invention relates to [1] a process for producing a printed material, including step 1 of subjecting an image-bearing surface of a printed recording medium 1′ on which characters or images are formed by analog printing to discharge treatment under specific conditions to obtain a printed recording medium 1, and step 2 of further forming characters or images on the image-bearing surface of the printed recording medium 1 by ink-jet printing using a water-based ink to obtain the printed material, [2] an ink-jet printing method including the step of ejecting a water-based ink onto a printed recording medium 1 by an ink-jetting method to form characters or images thereon, in which the printed recording medium 1 has an image-bearing surface on which characters or images are formed by analog printing, and the image-bearing surface is subjected to discharge treatment under the specific conditions, [3] a recording medium for ink-jet printing, including an image-bearing surface on which characters or images are formed by analog printing and which is subjected to discharge treatment, in which a surface free energy of the image-bearing surface after being subjected to the discharge treatment is not less than 30 mN/m, and [4] a printed material including an image-bearing surface on which characters or images are formed by analog printing and then on at least a part of which characters or images are further formed by ink-jet printing using a water-based ink, in which the image-bearing surface after forming the characters or images thereon by the analog printing is subjected to discharge treatment, and a surface free energy of the image-bearing surface after being subjected to the discharge treatment is not less than 30 mN/m.
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公开(公告)号：US11034179B2
公开(公告)日：2021-06-15
申请号：US16485298
申请日：2018-02-15
申请人： KAO CORPORATION
发明人： Ryuma Mizushima , Yuta Matsumoto , Yasufumi Ueda
摘要： The present invention relates to [1] a process for producing a printed material, including step 1 of subjecting an image-bearing surface of a printed recording medium 1′ on which characters or images are formed by analog printing to discharge treatment under specific conditions to obtain a printed recording medium 1, and step 2 of further forming characters or images on the image-bearing surface of the printed recording medium 1 by ink-jet printing using a water-based ink to obtain the printed material, [2] an ink-jet printing method including the step of ejecting a water-based ink onto a printed recording medium 1 by an ink-jetting method to form characters or images thereon, in which the printed recording medium 1 has an image-bearing surface on which characters or images are formed by analog printing, and the image-bearing surface is subjected to discharge treatment under the specific conditions, [3] a recording medium for ink-jet printing, including an image-bearing surface on which characters or images are formed by analog printing and which is subjected to discharge treatment, in which a surface free energy of the image-bearing surface after being subjected to the discharge treatment is not less than 30 mN/m, and [4] a printed material including an image-bearing surface on which characters or images are formed by analog printing and then on at least a part of which characters or images are further formed by ink-jet printing using a water-based ink, in which the image-bearing surface after forming the characters or images thereon by the analog printing is subjected to discharge treatment, and a surface free energy of the image-bearing surface after being subjected to the discharge treatment is not less than 30 mN/m.
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公开(公告)号：US10471739B2
公开(公告)日：2019-11-12
申请号：US16077131
申请日：2017-02-02
发明人： Yuta Matsumoto , Yasufumi Ueda , Tatsuo Shigeta
摘要： The present invention relates to an ink-jet printing apparatus that is capable of obtaining printed materials having good appearance while maintaining high quality of printed characters or images even when printed on a resin printing medium using a water-based ink, and an ink-jet printing method. The present invention provides an ink-jet printing apparatus in which when setting a plurality of measuring positions of a printing medium including a position of the printing medium at which the printing medium is wound into a web roll in a web roll heating/supporting mechanism and positions of the printing medium which are respectively located just below a plurality of ink-jet printing heads, a plurality of temperature measuring devices measure temperatures of a surface of the printing medium at the plurality of measuring positions, respectively, and a heating amount control device controls a heating amount of the web roll heating/supporting mechanism and heating amounts of under heaters on the basis of the plural measured temperatures such that a difference between the temperatures measured in a portion of the printing medium to which a tension force is applied falls within the range of 10° C., and an ink-jet printing method using the ink-jet printing apparatus.
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公开(公告)号：US20190047308A1
公开(公告)日：2019-02-14
申请号：US16076471
申请日：2016-09-28
发明人： Koji Kutsuwa , Yasufumi Ueda , Takayuki Suzuki
IPC分类号： B41M5/50 , C09D11/322 , C09D11/38 , B41J2/16 , B41M5/52
摘要： An inkjet recording medium having an ink receiving layer containing an inorganic pigment, starch, and copolymer latex on at least one surface of a base, characterized in that the inorganic pigment contains engineered calcium carbonate and kaolin, an amount of the engineered calcium carbonate is from 50% by weight or more to less than 80% by weight and an amount of the kaolin is from 10% by weight or more to less than 50% by weight with respect to a total amount of the inorganic pigment, and from 1 parts by weight or more to 10 parts by weight or less of an organic pigment having a glass transition temperature (Tg) of 20° C. or more is contained in the ink receiving layer with respect to 100 parts by weight of the inorganic pigment.
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公开(公告)号：US11535764B2
公开(公告)日：2022-12-27
申请号：US16349195
申请日：2017-11-13
申请人： KAO CORPORATION
发明人： Kazuki Watanabe , Ryuma Mizushima , Takahiro Sato , Yasufumi Ueda
IPC分类号： C09D11/033 , C09D11/107 , C09D11/03 , C09D11/037 , C09D11/023
摘要： The present invention relates to an aqueous gravure ink containing a pigment, a polymer, a water-soluble organic solvent, a surfactant and water, in which the water-soluble organic solvent contains a glycol ether having a boiling point of from 100 to 260° C., and a content of the glycol ether in the ink is from 1 to 10% by mass; a total content of the water-soluble organic solvent in the ink is not more than 15% by mass; the surfactant contains an acetylene glycol-based surfactant; and a content of water in the ink is from 50 to 70% by mass.
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公开(公告)号：US11325992B2
公开(公告)日：2022-05-10
申请号：US16473186
申请日：2017-12-22
申请人： KAO CORPORATION
发明人： Tomohide Yoshida , Yasufumi Ueda
IPC分类号： C09D11/106 , C09D11/322 , C09D11/326 , C09D17/00 , C08F2/44 , C08F212/08 , C08F220/06 , C08K9/10 , B41J2/01 , C08F2/06 , C08K5/37 , C08K9/06 , C08K3/22
摘要： The present invention relates to a process for producing a dispersion of white fine particles from which a white ink that is capable of exhibiting excellent hiding power, rub fastness and water resistance even when printed on a low-water absorbing printing medium can be obtained by incorporating the dispersion of the white fine particles into the ink, and a water-based ink for ink-jet printing which contains the white fine particles. The present invention provides [1] a process for producing a dispersion of white fine particles, including step 1 of mixing titanium oxide and a polymer dispersant at a pH value that is not less than an acid dissociation exponent (pKa) of at least a part of an acid component of the polymer dispersant to thereby obtain a titanium oxide dispersion, in which an isoelectric point (A) of the titanium oxide and the acid dissociation exponent (pKa) (B) of the polymer dispersant satisfy a relationship represented by the formula: A−B≥0, the polymer dispersant contains a constitutional unit derived from a hydrophobic monomer, and a volume median particle size (D50) of particles in the titanium oxide dispersion is from 150 to 500 nm; and step 2 of adding a polymerizable monomer to the titanium oxide dispersion obtained in the step 1 to subject the polymerizable monomer to polymerization reaction, thereby obtaining the dispersion of the white fine particles, and [2] a water-based ink for ink-jet printing which contains the white fine particles obtained above.
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公开(公告)号：US11174405B2
公开(公告)日：2021-11-16
申请号：US16463515
申请日：2017-11-30
申请人： KAO CORPORATION
发明人： Tomohide Yoshida , Yasufumi Ueda
IPC分类号： B32B5/16 , C09C1/36 , C09D11/322 , C09C3/06 , C09C3/10
摘要： The present invention relates to white fine particles from which a white ink that is capable of satisfying both of high hiding power and good bending resistance in a printed material can be obtained, and further relates to white fine particles from which an ink that is capable of satisfying not only excellent fixing properties even when printed on a non-liquid absorbing printing medium such as a resin film, but also suppression of increase in viscosity of the ink and at the same time good deinking properties at a high level can be obtained. The present invention provides [1] white fine particles containing titanium oxide and a polymer component with which the titanium oxide is encapsulated, in which a titanium atomic fraction of a surface of the respective white fine particles as measured at a photoelectron takeoff angle of 45° by X-ray photoelectron spectroscopy (XPS) is not more than 7 atomic %, [2] a water-based ink containing the aforementioned white fine particles, in which the titanium atomic fraction of the surface of the respective white fine particles as measured at a photoelectron takeoff angle of 45° by XPS is not more than 5 atomic %, and [3] a process for producing a dispersion of white fine particles, including step 1 of mixing titanium oxide and a polymer dispersant to obtain a titanium oxide dispersion and step 2 of adding a polymerizable monomer to the thus obtained titanium oxide dispersion to subject the polymerizable monomer to polymerization reaction, thereby obtaining the dispersion of the white fine particles, in which a titanium atomic fraction of a surface of the respective white fine particles as measured at a photoelectron takeoff angle of 45° by XPS is not more than 7 atomic %.
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