公开(公告)号：US20190092953A1

公开(公告)日：2019-03-28

申请号：US16142019

申请日：2018-09-26

Applicant: Seiko Epson Corporation

Inventor： Takayoshi KAGATA ,  Hiroshi FUKUMOTO ,  Takeshi YANO ,  Miho NAKAMURA ,  Shugo HATTORI ,  Katsuko AOKI ,  Shigeki KAWADA

IPC: C09D11/108 ,  C09D11/037 ,  C09D11/102 ,  C09D11/107 ,  B41M5/382

Abstract: An ink set which is used for sublimation transfer includes a first ink, and a second ink. The first ink has a color after transfer of |a*|≤10 and |b*|≤10 in a CIELAB color space, and contains a first disperse dye dispersed by a first dispersion resin. The second ink has a color after transfer of |a*|>10 or |b*|>10 in the CIELAB color space, and contains a second disperse dye dispersed by a second dispersion resin. A glass transition temperature of the first dispersion resin and is different than that of the second dispersion resin.

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：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：US20200207997A1

公开(公告)日：2020-07-02

申请号：US16727020

申请日：2019-12-26

Applicant: Seiko Epson Corporation

Inventor： Yasunari IKEDA ,  Hirofumi HOKARI ,  Shinichi YAMAMOTO ,  Shigeki KAWADA ,  Michio NAKAMORI

IPC: C09D11/322 ,  C08K5/42 ,  C08L25/08 ,  C08L41/00 ,  C08K5/45

Abstract: An aqueous ink jet composition according to the present disclosure includes: C.I. Disperse Red 364 as a first component; a second component which is a dispersant having a chemical structure of at least one of a sulfo group and a salt thereof; and a third component having an indigo skeleton and a chemical structure of at least one of a sulfo group and a salt thereof.

公开(公告)号：US20210179875A1

公开(公告)日：2021-06-17

申请号：US17122213

申请日：2020-12-15

Applicant: Seiko Epson Corporation

Inventor： Shigeki KAWADA ,  Yasunari IKEDA

IPC: C09D11/328 ,  C09D11/326 ,  B41M5/52 ,  B41M7/00

Abstract: A sublimation-transfer ink jet ink composition contains dyes and water, where the dyes include one or more yellow dyes and one or more blue dyes; the yellow dyes include C.I. Solvent Yellow 160:1; and the blue dyes include one or more selected from C.I. Disperse Blue 60, C.I. Disperse Blue 359, and C.I. Disperse Blue 360.

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.