公开(公告)号：US20210163765A1

公开(公告)日：2021-06-03

申请号：US17268029

申请日：2019-10-18

Applicant: KAO CORPORATION

Inventor： Yuki OZAKI ,  Yasufumi UEDA ,  Ryuma MIZUSHIMA ,  Takuto MATSUZONO

IPC: C09D11/023 ,  C09D11/033 ,  C09D11/108 ,  B41M1/30 ,  B41M1/10

Abstract: The present invention provides an aqueous ink for plate-based printing which is excellent in transfer properties and substrate adhesion properties even against a low-liquid absorbing printing medium, and a plate-based printing method using the aqueous ink. The present invention relates to [1] an aqueous ink for plate-based printing which contains pigment-containing crosslinked water-insoluble polymer particles A, pigment-free water-insoluble polymer particles B, an organic amine compound, not less than 1% by mass and not more than 30% by mass of a water-soluble organic solvent having a boiling point of not lower than 100° C. and not higher than 260° C., and water, and [2] a plate-based printing method including the step of printing characters or images on a low-liquid absorbing printing medium using the aforementioned aqueous ink.

公开(公告)号：US20190047299A1

公开(公告)日：2019-02-14

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 ,  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：US20180244093A1

公开(公告)日：2018-08-30

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 ,  B41F9/06 ,  C09D11/023

CPC classification number: B41M1/10 ,  B41F3/36 ,  B41F9/00 ,  B41F9/061 ,  B41F13/11 ,  B41N1/06 ,  C09D11/023

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：US20220213334A1

公开(公告)日：2022-07-07

申请号：US17613132

申请日：2020-03-09

Applicant: KAO CORPORATION

Inventor： Yuki OZAKI ,  Yasufumi UEDA ,  Takuto MATSUZONO ,  Ryuma MIZUSHIMA

IPC: C09D11/033 ,  C09D11/037 ,  C09D11/108 ,  B41M1/10

Abstract: The present invention relates to an aqueous ink for plate-based printing, which contains the following components (A) to (C) and water: (A) not less than 1% by mass and not more than 15% by mass of a pigment; (B) not less than 1% by mass and not more than 12% by mass of pigment-free crosslinked polymer particles; and (C) not less than 1% by mass and not more than 15% by mass of a water-soluble organic solvent having a boiling point of not lower than 100° C. and not higher than 260°, and a plate-based printing method including the step of printing characters or images on a low-liquid absorbing printing medium using the aforementioned aqueous ink. The aqueous ink for plate-based printing according to the present invention hardly suffers from occurrence of tone jump and is excellent in anti-blocking properties even when printed on a low-liquid absorbing printing medium.

公开(公告)号：US20180244932A1

公开(公告)日：2018-08-30

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

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：US20210388224A1

公开(公告)日：2021-12-16

申请号：US17291036

申请日：2019-12-03

Applicant: KAO CORPORATION

Inventor： Ryuma MIZUSHIMA ,  Yuki OZAKI ,  Takuto MATSUZONO ,  Yasufumi UEDA

IPC: C09D11/037 ,  C09D5/14 ,  C09D11/03 ,  C09D11/106

Abstract: The present invention relates to an aqueous gravure ink containing pigment particles A, polymer particles B and water, the aqueous gravure ink being capable of satisfying at least one of the following requirements 1 and 2: Requirement 1: an average particle size of whole particles in the aqueous gravure ink is not less than 150 nm and not more than 500 nm, and a polydispersity index in a particle size distribution of the whole particles is not less than 0.10 and not more than 0.30; and Requirement 2: an average particle size of the pigment particles A is not less than 140 nm and not more than 550 nm, and a polydispersity index in a particle size distribution of the pigment particles A is not less than 0.08 and not more than 0.32, and an average particle size of the polymer particles B is not less than 30 nm and not more than 220 nm, and a polydispersity index in a particle size distribution of the polymer particles B is not less than 0.08 and not more than 0.32. The aqueous gravure ink of the present invention is excellent in storage stability and is capable of providing a printed material that is excellent in rub fastness and adhesion properties.

公开(公告)号：US20200230988A1

公开(公告)日：2020-07-23

申请号：US16305020

申请日：2017-06-01

Applicant: KAO CORPORATION

Inventor： Ryuma MIZUSHIMA ,  Yasufumi UEDA

IPC: B41M5/00 ,  C09D11/322

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：US20160130453A1

公开(公告)日：2016-05-12

申请号：US14896030

申请日：2014-06-04

Applicant: KAO CORPORATION

Inventor： Tetsuya EGUCHI ,  Ryuma MIZUSHIMA

IPC: C09D11/322 ,  C09D11/107

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.

Abstract translation: 提供一种用于喷墨印刷的水性油墨，其在高吸水性记录介质和低吸水性记录介质中的任何一种下都具有优异的光学密度，并且点尺寸在低水 吸收记录介质和耐磨性。 本发明涉及一种喷墨印刷用水性油墨，其中含有不溶于水的聚合物颗粒A，水不溶性聚合物颗粒B，有机溶剂C和水，其中水不溶性聚合物颗粒A 由含有衍生自离子性单体的结构单元，衍生自含芳环的疏水性单体的结构单元和来自特定的亲水性非离子单体的结构单元的水不溶性聚合物（a）构成， 基于水不溶性聚合物（a）中的整体结构单元，来源于亲水性非离子性单体的结构单元的含量为13质量％以上且45质量％以下。 有机溶剂C包括一种或多种沸点为90℃以上的有机溶剂，其中由有机溶剂的含量（质量％）加权的有机溶剂C的加权平均沸点在 有机溶剂C为250℃以下; 水性油墨中的有机溶剂C的含量为20质量％以上。

公开(公告)号：US20210163767A1

公开(公告)日：2021-06-03

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 ,  C09D11/108 ,  C09D11/107

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：US20190264043A1

公开(公告)日：2019-08-29

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

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.