公开(公告)号：US10960697B2

公开(公告)日：2021-03-30

申请号：US15756364

申请日：2016-08-03

Applicant: THINK LABORATORY CO., LTD. ,  KAO CORPORATION

Inventor： Tatsuo Shigeta ,  Ryuma Mizushima ,  Yuta Matsumoto ,  Yasufumi Ueda

IPC: B41M1/10 ,  B41F3/36 ,  C09D11/023 ,  B41F9/00 ,  B41F13/11 ,  B41F9/06 ,  B41N1/06

Abstract: Provided is a gravure printing method by which high printing density and excellent highlight suitability are obtained, even if a gravure plate having high resolution and reduced thickness is used. The gravure printing method comprises: using an aqueous ink having a Zahn cup #3 viscosity at 20° C. of 11.0 seconds or more and 20.0 seconds or less, and having an evaporation rate of 30 mass % or less in a drying test, the drying test involving drying 1 g of the ink at a temperature of 40° C. and an air flow of 1,400 L/min for 30 minutes; and transferring 1 ml/m2 or more and 7 ml/m2 or less of the ink onto a printing medium.

公开(公告)号：US09878558B2

公开(公告)日：2018-01-30

申请号：US14896030

申请日：2014-06-04

Applicant: KAO CORPORATION

Inventor： Tetsuya Eguchi ,  Ryuma Mizushima

IPC: B41J2/21 ,  C09D11/322 ,  C09D11/107 ,  C09D11/326 ,  C09D11/10

CPC classification number: B41J2/2107 ,  C09D11/10 ,  C09D11/107 ,  C09D11/322 ,  C09D11/326

Abstract: There is provided a water-based ink for ink-jet printing which is excellent in optical density when printed on any of a high-water absorbing recording medium and a low-water absorbing recording medium, spreading of the dot size on the low-water absorbing recording medium, and rub fastness. The present invention relates to a water-based ink for ink-jet printing, including pigment-containing water-insoluble polymer particles A, water-insoluble polymer particles B, an organic solvent C and water, in which the water-insoluble polymer particles A are constituted of a water-insoluble polymer (a) including a constitutional unit derived from an ionic monomer, a constitutional unit derived from an aromatic ring-containing hydrophobic monomer and a constitutional unit derived from a specific hydrophilic nonionic monomer; the constitutional unit derived from the hydrophilic nonionic monomer is present in an amount of not less than 13% by mass and not more than 45% by mass on the basis of whole constitutional units in the water-insoluble polymer (a); the organic solvent C includes one or more organic solvents having a boiling point of 90° C. or higher in which a weighted mean boiling point of the organic solvent C which is weighted by contents (% by mass) of the respective organic solvents in the organic solvent C is 250° C. or lower; and a content of the organic solvent C in the water-based ink is not less than 20% by mass.

公开(公告)号：US11952500B2

公开(公告)日：2024-04-09

申请号：US16972419

申请日：2019-04-02

Applicant: KAO CORPORATION

Inventor： Yuki Ozaki ,  Yasufumi Ueda ,  Ryuma Mizushima ,  Takuto Matsuzono

IPC: C09D11/037 ,  C09D11/107 ,  C09D11/108 ,  C08K5/23

CPC classification number: C09D11/037 ,  C09D11/107 ,  C09D11/108 ,  C08K5/23

Abstract: The present invention relates to an aqueous gravure ink containing a pigment, 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 100 to 260° C.; the surfactant contains a silicone-based surfactant containing a specific constitutional unit; a content of the water-soluble organic solvent in the ink is 1 to 10% by mass; and a content of water in the ink is 50 to 80% by mass. This ink exhibits a less burden on the environments, and is excellent in optical density and drying properties.

公开(公告)号：US11254157B2

公开(公告)日：2022-02-22

申请号：US16305020

申请日：2017-06-01

Applicant: KAO CORPORATION

Inventor： Ryuma Mizushima ,  Yasufumi Ueda

IPC: B41M5/00 ,  C09D11/322 ,  C08F20/06

Abstract: The present invention relates to an ink-jet printing method including the step of ejecting a water-based ink containing pigment-containing water-insoluble polymer particles and water onto a printing medium to print characters or images on the printing medium, in which the pigment is at least one pigment selected from the group consisting of C.I. Pigment Red 177, C.I. Pigment Red 254, C.I. Pigment Green 7, C.I. Pigment Green 36 and C.I. Pigment Blue 15:6; the water-insoluble polymer constituting the particles contains a constitutional unit derived from an ionic monomer, a constitutional unit derived from a hydrophobic monomer and a constitutional unit derived from a monomer capable of forming a graft chain; and the printing medium is a low-water absorbing printing medium.

公开(公告)号：US10603928B2

公开(公告)日：2020-03-31

申请号：US16077298

申请日：2017-02-02

Applicant: KAO CORPORATION ,  THINK LABORATORY CO., LTD.

Inventor： Yuta Matsumoto ,  Ryuma Mizushima ,  Takahiro Sato ,  Kazuki Watanabe ,  Yasufumi Ueda ,  Tatsuo Shigeta

IPC: B41J11/00 ,  B41M7/00 ,  B41M5/00 ,  B41J2/21

Abstract: The present invention relates to an ink-jet printing method that is capable of obtaining good printed materials that are free of occurrence of color migration and deformation of a printing medium even when printed on a resin printing medium. The present invention provides an ink-jet printing method using a water-based ink containing a black ink, a chromatic ink and a white ink which each contain a pigment (A), an organic solvent (C) having a boiling point of not lower than 90° C. and lower than 250° C., and water, said method including step 1 of ejecting at least one water-based ink selected from the group consisting of the black ink and the chromatic ink onto a transparent resin printing medium to print an image 1 on the printing medium; step 2 of ejecting the white ink onto the resulting image 1 to print a white image that covers the image 1 on the printing medium; and step 3 of heating and drying the resulting printed material from a side of a surface of the printing medium on which the white image is formed, using an infrared heater.

公开(公告)号：US11535764B2

公开(公告)日：2022-12-27

申请号：US16349195

申请日：2017-11-13

Applicant: KAO CORPORATION

Inventor： Kazuki Watanabe ,  Ryuma Mizushima ,  Takahiro Sato ,  Yasufumi Ueda

IPC: C09D11/033 ,  C09D11/107 ,  C09D11/03 ,  C09D11/037 ,  C09D11/023

Abstract: 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.

公开(公告)号：US11254828B2

公开(公告)日：2022-02-22

申请号：US16957262

申请日：2018-12-27

Applicant: KAO CORPORATION

Inventor： Ryuma Mizushima ,  Kazuki Watanabe ,  Yuki Ozaki ,  Takuto Matsuzono ,  Yasufumi Ueda

IPC: C09D11/037 ,  B41M1/10 ,  B41F9/10

Abstract: 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.

公开(公告)号：US10829651B2

公开(公告)日：2020-11-10

申请号：US15756341

申请日：2016-08-03

Applicant: THINK LABORATORY CO., LTD. ,  KAO CORPORATION

Inventor： Tatsuo Shigeta ,  Ryuma Mizushima ,  Yuta Matsumoto ,  Yasufumi Ueda

IPC: C09D11/03 ,  C09D11/033 ,  C09D11/023 ,  C09D11/037

Abstract: 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.

公开(公告)号：US09388321B2

公开(公告)日：2016-07-12

申请号：US14653136

申请日：2013-12-10

Applicant: KAO CORPORATION

Inventor： Ryuma Mizushima ,  Tetsuya Eguchi

IPC: B41J2/01 ,  C09D11/36 ,  C09D133/14 ,  B41J2/21 ,  C09D11/322 ,  C09D11/326

CPC classification number: C09D11/36 ,  B41J2/2107 ,  C09D11/322 ,  C09D11/326 ,  C09D133/14

Abstract: The present invention relates to an ink jet printing method for printing images or characters on a recording medium using a water-based ink, in which the water-based ink includes pigment-containing water-insoluble polymer particles A, water-insoluble polymer particles B, an organic solvent C and water; the water-insoluble polymer particles A includes a water-insoluble polymer (a) containing constitutional units derived from an ionic monomer (a-1), an aromatic ring-containing hydrophobic monomer (a-2) and a specific hydrophilic monomer (a-3), the constitutional unit derived from the hydrophilic monomer (a-3) being present in an amount of from 13 to 45% by mass; the organic solvent C includes one or more organic solvents having a boiling point of 90° C. or higher, and has an average boiling point of 250° C. or lower as a weighted mean value; and the recording medium has a water absorption of from 0 to 10 g/m2 as measured in a pure water contact time of 100 ms. The ink-jet printing method is excellent in spreading of the dot size, optical density, gloss and rub fastness when printed on a low-water absorbing recording medium.

Abstract translation: 本发明涉及一种使用水性油墨在记录介质上打印图像或字符的喷墨打印方法，其中水性油墨包括含颜料的水不溶性聚合物颗粒A，水不溶性聚合物颗粒B ，有机溶剂C和水; 水不溶性聚合物粒子A包含含有衍生自离子性单体（a-1），含芳香族环的疏水性单体（a-2）和特定亲水性单体（a-1）的结构单元的水不溶性聚合物（a） 3）中，来自亲水性单体（a-3）的结构单元的含量为13〜45质量％ 有机溶剂C包括一种或多种沸点为90℃以上的有机溶剂，平均沸点为250℃以下作为加权平均值; 记录介质的纯水接触时间为100ms时的吸水率为0〜10g / m2。 喷墨打印方法在打印在低吸水记录介质上时，点尺寸，光密度，光泽和耐擦牢性的扩展性优异。

公开(公告)号：US11072197B2

公开(公告)日：2021-07-27

申请号：US16485298

申请日：2018-02-15

Applicant: KAO CORPORATION

Inventor： Ryuma Mizushima ,  Yuta Matsumoto ,  Yasufumi Ueda

IPC: B41J11/00 ,  B41M5/50 ,  C09D11/033 ,  C09D11/30 ,  B41M5/00 ,  B41M1/30 ,  B41F19/00 ,  B41F23/04

Abstract: 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.