公开(公告)号：US20220089890A1

公开(公告)日：2022-03-24

申请号：US17482495

申请日：2021-09-23

Applicant: Seiko Epson Corporation

Inventor： Mami TOJINO ,  Toshihiro OTAKE ,  Koichi TERAO ,  Hiroshi ITO ,  Koji HORIBA

IPC: C09D11/328 ,  C09D11/107 ,  C09D11/033

Abstract: A dispersion liquid includes water, a coloring material, and a dispersion resin that disperses the coloring material. The dispersion resin has a constituent unit A containing a hydrophobic monomer, a constituent unit B containing a hydrophilic acrylic acid monomer, and a constituent unit C containing a hydrophilic vinyl monomer having a sulfonate group, and the weight-average molecular weight of the dispersion resin is 10,000 to 100,000. The content of the constituent unit A is 60 mol % or more relative to the total amount of the dispersion resin.

公开(公告)号：US20220162367A1

公开(公告)日：2022-05-26

申请号：US17534515

申请日：2021-11-24

Applicant: Seiko Epson Corporation

Inventor： Mami TOJINO

IPC: C08F277/00 ,  C08J3/05 ,  C09D11/328 ,  C09D11/106 ,  C08K5/357

Abstract: A dispersion liquid includes water, a coloring material, and a dispersion resin that disperses the coloring material. The dispersion resin has a constituent unit A containing a hydrophobic monomer, and a predetermined constituent unit B.

公开(公告)号：US20220025204A1

公开(公告)日：2022-01-27

申请号：US17380071

申请日：2021-07-20

Applicant: Seiko Epson Corporation

Inventor： Toshihiro OTAKE ,  Koichi TERAO ,  Mami TOJINO ,  Hiroshi ITO ,  Koji HORIBA

IPC: C09D17/00 ,  C08F220/18 ,  C08F220/06 ,  C08F212/08 ,  C08F220/58 ,  C09D11/326 ,  C09D11/328 ,  C09D11/38 ,  C09D11/033

Abstract: A dispersion contains water, a color material, and a dispersing resin that disperses the color material, the dispersing resin having a structural unit A containing a hydrophobic monomer, a structural unit B containing a hydrophilic acrylic acid monomer, and a structural unit C containing a sulfonic acid group-containing acrylamide monomer, where the dispersing resin has a weight average molecular weight of from 5000 to 100000 and a content of the structural unit A is 60 mol % or more with respect to a total amount of the dispersing resin.

公开(公告)号：US20220154022A1

公开(公告)日：2022-05-19

申请号：US17529320

申请日：2021-11-18

Applicant: Seiko Epson Corporation

Inventor： Koichi TERAO ,  Mami TOJINO ,  Toshihiro OTAKE ,  Hiroshi ITO ,  Koji HORIBA

IPC: C09D11/32 ,  C09D11/033 ,  C09D11/102

Abstract: A dispersion liquid includes water, a coloring material, and a dispersing resin which disperses the coloring material, in which the dispersing resin has a predetermined constituent unit A, a predetermined constituent unit B, and a predetermined constituent unit C.

公开(公告)号：US20200062980A1

公开(公告)日：2020-02-27

申请号：US16547637

申请日：2019-08-22

Applicant: Seiko Epson Corporation

Inventor： Keigo ANDO ,  Mami TOJINO

IPC: C09D11/38 ,  C09D11/033 ,  C09D11/102

Abstract: An ink composition includes resin particles, one or more surfactants, one or more water-soluble organic solvents, and a glycol ether, where: the surfactants include a fluorosurfactant having a predetermined structure and an HLB value determined by Griffin's method of 11 or less; the water-soluble organic solvents include one or more selected from the group consisting of glycerin, ethylene glycol, diethylene glycol, polyethylene glycol having a weight-average molecular weight of 10,000 or less, 1,3-propanediol, 1,4-butanediol, and diglycerol; and the glycol ether has a predetermined structure and an HLB value determined by Griffin's method of 11 or less.

公开(公告)号：US20220186062A1

公开(公告)日：2022-06-16

申请号：US17546154

申请日：2021-12-09

Applicant: Seiko Epson Corporation

Inventor： Hajime KAKISHITA ,  Mami TOJINO ,  Toshihiro OTAKE ,  Koichi TERAO ,  Hiroshi ITO ,  Koji HORIBA

IPC: C09D17/00 ,  C08F220/18 ,  C08F220/06 ,  C08F220/20 ,  C08F220/58 ,  C08F212/08 ,  C08K5/42 ,  C09D11/033 ,  C09D11/326 ,  C09D11/38

Abstract: A dispersion liquid includes water, a coloring material, a dispersion resin that disperses the coloring material, and a compound having s sulfonate group and a polymerizable group. The dispersion resin has a constituent unit A containing a hydrophobic monomer and a constituent unit B containing a monomer having a sulfonate group. The weight-average molecular weight of the dispersion resin is 5,000 to 100,000, and the molecular weight of the compound is 300 or less.

公开(公告)号：US20220154021A1

公开(公告)日：2022-05-19

申请号：US17529314

申请日：2021-11-18

Applicant: Seiko Epson Corporation

Inventor： Koichi TERAO ,  Mami TOJINO ,  Toshihiro OTAKE ,  Hiroshi ITO ,  Koji HORIBA

IPC: C09D11/32 ,  C09D11/033 ,  C09D11/328 ,  C09D11/102

Abstract: A dispersion liquid includes water, a coloring material, and a dispersing resin which disperses the coloring material, in which the dispersing resin has a predetermined constituent unit A, a predetermined constituent unit B, and a predetermined constituent unit C.

公开(公告)号：US20190126640A1

公开(公告)日：2019-05-02

申请号：US16174555

申请日：2018-10-30

Applicant: Seiko Epson Corporation

Inventor： Mami TOJINO ,  Ippei OKUDA ,  Akira MIZUTANI

IPC: B41J11/00

Abstract: A recording method includes heating a recording medium and attaching an ink composition including an organic solvent and water to the heated recording medium by performing a main scanning a plurality of times. In each main scanning the ink composition is ejected from a recording head while a position of the recording head relative to the recording medium in a main scanning direction is changed. In the ink composition, an absolute value of a difference between a surface tension of the ink composition and a surface tension of the ink composition when the ink composition is evaporated up to an evaporation amount of 0% to 40% by mass is 1 mN/m or less.