公开(公告)号：US20200207999A1

公开(公告)日：2020-07-02

申请号：US16727048

申请日：2019-12-26

Applicant: Seiko Epson Corporation

Inventor： Hisashi OKAMURA ,  Hiroko HAYASHI ,  Kenji KITADA ,  Yasunari IKEDA ,  Hirofumi HOKARI ,  Shinichi YAMAMOTO ,  Michio NAKAMORI ,  Shigeki KAWADA ,  Kenta KIKUCHI ,  Kazumasa OTSUKI ,  Seiji KAGAMI ,  Shinichi NAITO

IPC: C09D11/322 ,  C08L39/00 ,  C08L71/02

Abstract: An aqueous ink jet composition contains: C.I. Disperse Red 364; a material A which is at least one compound selected from the group consisting of a compound represented by the following formula (1), a compound represented by the following formula (2), an ethylene oxide adduct of tristyrylphenol, a derivative of the ethylene oxide adduct of tristyrylphenol, a polyalkylene glycol, and a derivative of the polyalkylene glycol; and an anionic dispersant.

公开(公告)号：US20220340772A1

公开(公告)日：2022-10-27

申请号：US17727875

申请日：2022-04-25

Applicant: Seiko Epson Corporation

Inventor： Kenta KIKUCHI ,  Hiroaki KUMETA

IPC: C09D11/328 ,  C09D11/38 ,  C09D11/037 ,  B41M5/00 ,  B41J11/00

Abstract: An ink jet ink composition includes a color material having a ligand; an inorganic compound; and a pH adjuster, and the color material forms a complex with the inorganic compound by the ligand.

公开(公告)号：US20200239718A1

公开(公告)日：2020-07-30

申请号：US16775317

申请日：2020-01-29

Applicant: Seiko Epson Corporation

Inventor： Kenji KITADA ,  Hiroko HAYASHI ,  Yasunari IKEDA ,  Hisashi OKAMURA ,  Kenta KIKUCHI ,  Hirofumi HOKARI ,  Shinichi NAITO ,  Kazumasa OTSUKI ,  Michio NAKAMORI ,  Shinichi YAMAMOTO ,  Seiji KAGAMI ,  Shigeki KAWADA

IPC: C09D11/328 ,  C08K5/3415 ,  C08K5/1515 ,  C08K5/13 ,  C08L71/02 ,  C08K5/42

Abstract: An aqueous ink jet composition of the present disclosure includes: at least one dye selected from the group consisting of C.I. Solvent Yellow 160:1, C.I. Disperse Yellow 82, and C.I. Disperse Yellow 184; a material A which is at least one compound selected from the group consisting of a compound represented by the following formula (1), a compound represented by the following formula (2), an ethylene oxide adduct of tristyrylphenol, a derivative of an ethylene oxide adduct of tristyrylphenol, a polyalkylene glycol, and a derivative of a polyalkylene glycol; and an anionic dispersant.

公开(公告)号：US20190352525A1

公开(公告)日：2019-11-21

申请号：US16411332

申请日：2019-05-14

Applicant: Seiko Epson Corporation

Inventor： Yasunari IKEDA ,  Hiroko HAYASHI ,  Kenji KITADA ,  Hirofumi HOKARI ,  Hisashi OKAMURA ,  Kenta KIKUCHI ,  Shinichi NAITO

IPC: C09D11/328 ,  C09D11/38

Abstract: An aqueous ink jet composition includes a first component which is at least one selected from the group consisting of C.I. Solvent Yellow 160: 1, C.I. Disperse Yellow 82, and C.I. Disperse Yellow 184; a second component which is a dispersant having at least one chemical structure of a sulfo group and a salt thereof; and a third component which has a cumarin skeleton and at least one chemical structure of a sulfo group and a salt thereof.

公开(公告)号：US20240294788A1

公开(公告)日：2024-09-05

申请号：US18591221

申请日：2024-02-29

Applicant: SEIKO EPSON CORPORATION

Inventor： Tetsuya AOYAMA ,  Satoshi TSUBAMOTO ,  Masahiro YATAKE ,  Hiroaki KUMETA ,  Kenta KIKUCHI

IPC: C09D11/322

CPC classification number: C09D11/322

Abstract: An ink jet ink composition includes a pigment, a dispersant, and a biomass resin, the ink jet ink composition being an aqueous ink, in which the pigment is dispersed by the dispersant in water, and the dispersant includes a lignin compound.

公开(公告)号：US20230303878A1

公开(公告)日：2023-09-28

申请号：US18188572

申请日：2023-03-23

Applicant: SEIKO EPSON CORPORATION

Inventor： Shigeki KAWADA ,  Kenta KIKUCHI ,  Tetsuya AOYAMA ,  Hiroaki KUMETA

IPC: C09D11/40 ,  C09D11/328 ,  C09D11/38 ,  C09D11/037 ,  C09D11/033

CPC classification number: C09D11/40 ,  C09D11/328 ,  C09D11/38 ,  C09D11/037 ,  C09D11/033

Abstract: An ink set of the present disclosure includes a colored ink jet ink and a decoloring ink. The colored ink jet ink includes a leuco dye, a developer, and a dispersant, and the decoloring ink includes a solvent and water. The solvent includes a specific solvent component that has a Hansen solubility parameter that differs from the Hansen solubility parameter of the developer by an absolute value of less than or equal to 5.3. Preferably, the specific solvent component is a glycol ether or a glycol. Preferably, the leuco dye is a fluoran. Preferably, the developer is a compound containing a phenolic hydroxy group in the molecule.

公开(公告)号：US20230279253A1

公开(公告)日：2023-09-07

申请号：US18117499

申请日：2023-03-06

Applicant: SEIKO EPSON CORPORATION

Inventor： Kenta KIKUCHI ,  Hiroaki KUMETA ,  Satoshi TSUBAMOTO ,  Koji IMAMURA

IPC: C09D11/38 ,  C09D11/326

CPC classification number: C09D11/38 ,  C09D11/326

Abstract: An ink jet ink composition is a water-based ink jet ink composition and includes a vegetable black-derived colorant, a lignosulfonate salt, and an element A which includes at least one selected from the group consisting of Ca, Mg, Mn, Fe, Al, Si, Cr, Ni, Sr, and Ba, and a content of the element A with respect to a total mass of the ink composition is 50 to 1,700 mass ppm.

公开(公告)号：US20220340770A1

公开(公告)日：2022-10-27

申请号：US17726575

申请日：2022-04-22

Applicant: Seiko Epson Corporation

Inventor： Hiroaki KUMETA ,  Kenta KIKUCHI

IPC: C09D11/324 ,  C09D11/102 ,  C09D197/00 ,  B41J2/21

Abstract: An ink jet ink composition includes water, a plant-derived carbonized color material, and a lignin resin.

公开(公告)号：US20220098424A1

公开(公告)日：2022-03-31

申请号：US17488439

申请日：2021-09-29

Applicant: Seiko Epson Corporation

Inventor： Kenji KITADA ,  Takeshi YANO ,  Shinichi NAITO ,  Kenta KIKUCHI ,  Hirofumi HOKARI

IPC: C09D11/322 ,  D06P5/00

Abstract: One aspect of the ink jet ink set according to the present disclosure is an ink jet ink set including an anionic ink containing an anionic resin, a pigment, and water, and a cationic ink containing a cationic resin, a pigment, and water, in which the anionic ink and the cationic ink are similar colors to each other, the pigment in the anionic ink is coated with the anionic resin, the pigment in the cationic ink is coated with the cationic resin, and the anionic resin or the cationic resin, or both have a urethane-based skeleton or a polyester-based skeleton.

公开(公告)号：US20230085490A1

公开(公告)日：2023-03-16

申请号：US17894199

申请日：2022-08-24

Applicant: SEIKO EPSON CORPORATION

Inventor： Kenta KIKUCHI ,  Hiroaki KUMETA

IPC: C09D11/38 ,  C09D11/328 ,  C09D11/322

Abstract: An ink jet ink composition includes water, a phospholipid that forms a fine particle, and a coloring material that is incorporated in the fine particle.