公开(公告)号：US20210071021A1

公开(公告)日：2021-03-11

申请号：US16957487

申请日：2018-12-14

Applicant: KAO CORPORATION

Inventor： Yuta MATSUMOTO ,  Azusa KURODA ,  Kazuki ISHIDA

IPC: C09D11/322 ,  C09D11/102 ,  B41J2/01 ,  C09D11/107

Abstract: The present invention relates to an ink-jet printing method of overprinting a first ink and a second ink on a low-liquid absorbing printing medium, in which the first ink and the second ink are respectively in the form of a water-based ink containing a colorant (A), a polymer (B), an organic solvent (C) and water, and satisfy the following formulae (1) and (2), said ink-jet printing method including the steps of forming characters or images using at least one ink as the first ink, and then forming a background image using the second ink such that the background image is superimposed on at least a part of the characters or images formed by the first ink: [T2−T1]

公开(公告)号：US20190136077A1

公开(公告)日：2019-05-09

申请号：US16307305

申请日：2017-06-09

Applicant: KAO CORPORATION

Inventor： Yuta MATSUMOTO ,  Azusa KURODA

IPC: C09D11/322 ,  C09D133/10 ,  C08F2/22

Abstract: The present invention relates to [1] a process for producing a colored fine particle dispersion by subjecting a raw material monomer containing a crosslinkable monomer to emulsion polymerization in the presence of a pigment in which an amount of the crosslinkable monomer compounded in the raw material monomer is from 0.1 to 10% by mass, said process including the step 1 of mixing and emulsifying the raw material monomer with a surfactant A and water to obtain a pre-emulsion; and the step 2 of conducting the emulsion polymerization while supplying the pre-emulsion obtained in the step 1 to a pigment pre-dispersion containing the pigment and water to thereby obtain the colored fine particle dispersion, and [2] a process for producing a water-based ink, including the step of mixing the colored fine particle dispersion that is produced by the process according to the aforementioned [1], and an organic solvent.

公开(公告)号：US20190126657A1

公开(公告)日：2019-05-02

申请号：US16309788

申请日：2017-06-16

Applicant: KAO CORPORATION

Inventor： Azusa KURODA ,  Yuta MATSUMOTO

IPC: B41M5/00 ,  C09D11/322 ,  C09D11/033

Abstract: The present invention relates to an ink-jet printing method that is capable of obtaining good printed characters or images which are free of thermal deformation of a low-liquid absorbing printing medium as well as occurrence of mottling or color bleeding. The present invention provides an ink-jet printing method including the step of printing characters or images on a low-liquid absorbing printing medium using an ink-jet printing apparatus equipped with an ink-jet print head that is capable of ejecting water-based inks onto the low-liquid absorbing printing medium, in which the water-based inks each contain a colorant (A), an organic solvent (C) and water; the ink-jet printing apparatus is loaded with the two or more kinds of water-based inks which are different in static surface tension from each other; the printing medium is heated to a temperature of from 30 to 75° C.; and the water-based inks are ejected in the sequential order from the water-based ink having a higher static surface tension.

公开(公告)号：US20230031477A1

公开(公告)日：2023-02-02

申请号：US17786744

申请日：2019-12-20

Applicant: Yuta MATSUMOTO ,  Kao Corporation

Inventor： Yuta MATSUMOTO ,  Daniel SANDKER

IPC: C09D11/108 ,  C09D11/38 ,  C09D11/36 ,  C09D11/32 ,  B41M5/00

Abstract: An inkjet ink that includes (A) a terpene phenol resin and (B) a compound of formula (I) wherein R is an alkyl group having 8 to 22 carbon atoms or an alkenyl group having 8 to 22 carbon atoms, n is 0 or 1, p is an integer from 1 to 40, and q is an integer from 1 to 40. A printed article including the inkjet ink in dried form, and a method of forming a printed image with a thermal inkjet printhead are also provided.

公开(公告)号：US20190039384A1

公开(公告)日：2019-02-07

申请号：US16076867

申请日：2017-02-02

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

Inventor： Yuta MATSUMOTO ,  Kazuki WATANABE ,  Yasufumi UEDA ,  Tatsuo SHIGETA

IPC: B41J2/21 ,  B41M5/50 ,  C09D11/40 ,  B41J11/00 ,  B41M7/00

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 transparent resin printing medium using a water-based ink containing a white ink, and a black or chromatic ink. The present invention provides an ink-jet printing method including the step of ejecting a water-based ink onto a printing medium using a printing apparatus to print characters or images on the printing medium, said printing apparatus including an ink-jet printing head that ejects the water-based ink onto the printing medium that is transported in a feeding direction thereof; and an drying mechanism that is disposed on a downstream side in a feeding direction of the printing medium, in which the printing medium is in the form of a transparent resin printing medium, and the water-based ink includes a white ink, and a black or chromatic ink, and in which the drying mechanism blows a superheated steam that is heated to a temperature of 100 to 180° C. onto at least one of a printing surface and an opposite surface of the printing medium.

公开(公告)号：US20190039373A1

公开(公告)日：2019-02-07

申请号：US16077159

申请日：2017-02-02

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

Inventor： Yuta MATSUMOTO ,  Kazuki WATANABE ,  Yasufumi UEDA ,  Tatsuo SHIGETA

IPC: B41J2/135 ,  B41J11/02 ,  B41M5/00 ,  C09D11/322 ,  C09D11/40

Abstract: The present invention relates to an ink-jet printing apparatus that is capable of obtaining printed materials that are free of occurrence of color migration and have good appearance 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 including an ink-jet printing head that ejects a water-based ink onto a resin printing medium that is transported in a feeding direction thereof, and an under heater that heats the printing medium from a rear side surface of the printing medium opposed to a front side surface thereof which faces to the ink-jet printing head, in which the under heater is disposed at a position spaced at a distance of from 0.05 to 3.0 mm apart from the rear side surface of the printing medium upon printing, and an ink-jet printing method using the ink-jet printing apparatus.

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.