公开(公告)号：US20230303871A1

公开(公告)日：2023-09-28

申请号：US18126516

申请日：2023-03-27

Applicant: SEIKO EPSON CORPORATION

Inventor： Kunihiro FUJITA

IPC: C09D11/324 ,  C09D11/40 ,  C09D11/037 ,  C09D11/102 ,  B41J2/01

CPC classification number: C09D11/324 ,  C09D11/40 ,  C09D11/037 ,  C09D11/102 ,  B41J2/01

Abstract: An ink jet ink composition which is a water-based ink, includes a self-dispersible pigment, inorganic oxide particles, and a poly(ethylene glycol) represented by the following general formula (I), and the ink composition contains at least one type of metal ion selected from the group consisting of a potassium ion, a sodium ion, and a lithium ion.


HO—(CH2—CH2—O—)n—H  (I)

In the above formula, n represents an integer of 3 to 9.

公开(公告)号：US20210129569A1

公开(公告)日：2021-05-06

申请号：US17084742

申请日：2020-10-30

Applicant: Seiko Epson Corporation

Inventor： Kunihiro FUJITA ,  Ippei OKUDA

IPC: B41M5/00 ,  C09D11/54 ,  C09D11/40 ,  C09D11/322 ,  C09D11/108 ,  C09D11/107 ,  C09D11/037

Abstract: An ink jet recording method performs recording on a recording medium using a white ink composition, a non-white ink composition, and a treatment liquid containing an aggregating agent, the method including: a treatment liquid adhesion step of adhering the treatment liquid to the recording medium to form a treatment liquid layer; a non-white ink adhesion step of adhering the non-white ink composition to the recording medium by ejection thereof from an ink jet head to form a non-white ink layer; and a white ink adhesion step of adhering the white ink composition to the recording medium by ejection thereof from an ink jet head to form a white ink layer. The recording medium has a region in which the non-white ink layer, the white ink layer, and the treatment liquid layer are overlapped with each other, at least one of the ink compositions contains resin particles and a water-soluble resin, and the water-soluble resin has a glass transition temperature higher than that of a resin of the resin particles.

公开(公告)号：US20180298214A1

公开(公告)日：2018-10-18

申请号：US15950540

申请日：2018-04-11

Applicant: Seiko Epson Corporation

Inventor： Takuya TAKAHASHI ,  Kunihiro FUJITA ,  Yusuke MIZUTAKI

IPC: C09D11/033 ,  C09D11/324 ,  B41J2/155

CPC classification number: C09D11/033 ,  B41J2/14201 ,  B41J2/155 ,  C09D11/324 ,  C09D11/38

Abstract: An aqueous ink jet ink composition contains a pigment, propylene glycol, and water, in which the aqueous ink jet ink composition has the viscosity of 3.0 mm2/s or more and 10.0 mm2/s or less at 20° C., the aqueous ink jet ink composition has the pH of 7 or more, the content of the pigment is 5.5% by mass or more and 9% by mass or less based on the total amount of the aqueous ink jet ink composition, and the content of the propylene glycol is 8 parts by mass or more and 100 parts by mass or less based on 100 parts by mass of the pigment.

公开(公告)号：US20240124734A1

公开(公告)日：2024-04-18

申请号：US18476532

申请日：2023-09-28

Applicant: SEIKO EPSON CORPORATION

Inventor： Keisuke MORITA ,  Kunihiro FUJITA

IPC: C09D11/38 ,  B41J2/165 ,  C09D11/033 ,  C09D11/037 ,  C09D11/102 ,  C09D11/326

CPC classification number: C09D11/38 ,  B41J2/165 ,  C09D11/033 ,  C09D11/037 ,  C09D11/102 ,  C09D11/326

Abstract: An aqueous ink jet ink composition includes a coloring material, a betaine, an acetylene glycol-based surfactant, and a water-soluble urethane resin.

公开(公告)号：US20190276693A1

公开(公告)日：2019-09-12

申请号：US16293921

申请日：2019-03-06

Applicant: Seiko Epson Corporation

Inventor： Kunihiro FUJITA ,  Takuya TAKAHASHI ,  Yusuke MIZUTAKI

IPC: C09D11/322 ,  B41M5/00 ,  C09D11/037 ,  C09D11/033 ,  C09D11/107 ,  C09D11/102

Abstract: Provided is an ink-jet ink composition for a pressure-adhesion recording target medium. The ink-jet ink composition contains a pigment, a resin, an organic solvent, a surfactant, and water.

公开(公告)号：US20220332963A1

公开(公告)日：2022-10-20

申请号：US17718500

申请日：2022-04-12

Applicant: Seiko Epson Corporation

Inventor： Kunihiro FUJITA

IPC: C09D11/30 ,  B41J2/01 ,  B41M5/00 ,  B41M7/00

Abstract: A recording method of the present disclosure includes: an adhesion step of ejecting an ink composition from an ink jet head so as to be adhered to a recording medium; and a primary heating step of heating the ink composition adhered to the recording medium in the adhesion step, and the ink composition is a water-based ink containing an organic compound which is a solid at 25° C. having a standard boiling point of 280° C. or less and which has a solubility of 50 [g/100 g of water] or more in water at 25° C.

公开(公告)号：US20210179873A1

公开(公告)日：2021-06-17

申请号：US17118709

申请日：2020-12-11

Applicant: Seiko Epson Corporation

Inventor： Kunihiro FUJITA

IPC: C09D11/322 ,  C09D11/104 ,  B41J2/01 ,  C09D11/36

Abstract: An ink jet printing method includes an ink application step of ejecting at least an aqueous ink composition onto a printing medium from an ink jet head having a circulation path system through which the ink composition circulates. The ink composition contains resin particles made of a resin having an acid value of 10 mg KOH/g or less and an amino alcohol having a normal boiling point of 320° C. or less and optionally a pigment as a coloring material. The resin particles and the pigment, in total, account for 17% or less relative to the total mass of the ink composition.