公开(公告)号：US20240158654A1

公开(公告)日：2024-05-16

申请号：US18497011

申请日：2023-10-30

Applicant: SEIKO EPSON CORPORATION

Inventor： Miki UCHIDA ,  Yusuke MIZUTAKI ,  Yuko HISHIDA

IPC: C09D11/322 ,  C09D11/38

CPC classification number: C09D11/322 ,  C09D11/38

Abstract: An aqueous ink jet ink composition includes a coloring material, a water-soluble urethane resin, and an acetylene glycol-based surfactant having a HLB value of 6 or less. The content A of the acetylene glycol-based surfactant relative to the total mass of the ink jet ink composition is 0.1% by mass or more, and the ratio (A/U) of the content A of the acetylene glycol-based surfactant to the content U of the water-soluble urethane resin is from 0.3 to 2.3.

公开(公告)号：US20230167320A1

公开(公告)日：2023-06-01

申请号：US17993022

申请日：2022-11-23

Applicant: SEIKO EPSON CORPORATION

Inventor： Takuya TAKAHASHI ,  Yusuke MIZUTAKI ,  Miki UCHIDA

IPC: C09D11/324 ,  C09D11/38 ,  C09D11/033 ,  B41M5/00

CPC classification number: C09D11/324 ,  B41M5/0023 ,  C09D11/033 ,  C09D11/38

Abstract: An ink jet ink composition is a water-based ink which contains a colorant; inorganic oxide particles; a watersoluble silicate; and water, and a content of the watersoluble silicate with respect to a total mass of the ink is 0.5 percent by mass or less.

公开(公告)号：US20240318023A1

公开(公告)日：2024-09-26

申请号：US18613343

申请日：2024-03-22

Applicant: SEIKO EPSON CORPORATION

Inventor： Akinobu SUMIYOSHI ,  Kenta UCHIDA ,  Yusuke MIZUTAKI

IPC: C09D11/38 ,  B41J2/175 ,  C09D11/107 ,  C09D11/324

CPC classification number: C09D11/38 ,  B41J2/17509 ,  B41J2/17553 ,  B41J2/17566 ,  C09D11/107 ,  C09D11/324 ,  B41J2002/17573

Abstract: Provided is an aqueous ink jet ink composition including a self-dispersing pigment, a water-soluble resin, and a betaine, in which the ink jet ink composition is used by an ink jet recording device that includes an ink storage container having an ink filling hole, a content of the self-dispersing pigment is 3.5% by mass or greater and 8.5% by mass or less with respect to a total mass of the ink composition, a mass ratio (self-dispersing pigment/water-soluble resin) of the self-dispersing pigment to the water-soluble resin is 2.8 or greater and less than 30, and a content of the betaine is 2.5% by mass or greater and 9.5% by mass or less with respect to the total mass of the ink composition.

公开(公告)号：US20210246324A1

公开(公告)日：2021-08-12

申请号：US17162068

申请日：2021-01-29

Applicant: Seiko Epson Corporation

Inventor： Kiyomi KUMAMOTO ,  Yusuke MIZUTAKI ,  Jun ITO ,  Tomohito NAKANO

IPC: C09D11/328 ,  C09D11/322 ,  C09B47/06 ,  C08L71/02 ,  B41J2/14

Abstract: An ink jet ink set includes: an aqueous dye ink and an aqueous pigment ink, the ink jet ink set is an ink set to be used for an ink jet recording apparatus which has a first ejection port to eject the aqueous dye ink, a second ejection port to eject the aqueous pigment ink, and a cap to collectively cap the first ejection port and the second ejection port, the cap being composed of the same member as that forming the first ejection port and the second ejection port, the aqueous dye ink contains a dye and a poly(oxyalkylene) alkyl ether, the dye includes a copper phthalocyanine compound having two or less benzene ring structures other than a phthalocyanine skeleton, and the aqueous pigment ink contains a self-dispersible pigment.

公开(公告)号：US20210095149A1

公开(公告)日：2021-04-01

申请号：US17035940

申请日：2020-09-29

Applicant: Seiko Epson Corporation

Inventor： Kiyomi KUMAMOTO ,  Yusuke MIZUTAKI ,  Jun ITO ,  Tomohiro ARUGA ,  Tomoki MARUYAMA

IPC: C09D11/328 ,  B41J2/195

Abstract: An ink jet recording apparatus includes an ink composition, an ink encasement in which the ink composition is encased, a recording head that ejects the ink composition, and a carriage configured to move the recording head back and forth. The carriage carries the ink encasement, with the ink encasement integrated with the carriage. The ink encasement has an ink fill port that opens and shuts as a port through which the ink composition is loaded. The ink composition contains a disperse colorant, with the volume-average particle diameter of the disperse colorant being 105.0 nm or less.

公开(公告)号：US20210095146A1

公开(公告)日：2021-04-01

申请号：US17035965

申请日：2020-09-29

Applicant: Seiko Epson Corporation

Inventor： Tomoki MARUYAMA ,  Yusuke MIZUTAKI ,  Tomohiro ARUGA ,  Kiyomi KUMAMOTO ,  Jun ITO

IPC: C09D11/322 ,  B41J2/175 ,  B41J2/21 ,  C09D11/40 ,  B41J2/14

Abstract: An ink jet recording apparatus includes an ink composition, an ink encasement in which the ink composition is encased, a recording head that ejects the ink composition, and a carriage configured to move the recording head back and forth. The carriage carries the ink encasement, with the ink encasement integrated with the carriage. The ink encasement has an ink fill port that opens and shuts as a port through which the ink composition is loaded. The ink composition contains a water-soluble dye and a polyhydric alcohol with a normal boiling point of 270° C. or above, with the percentage of the polyhydric alcohol being 26.0% by mass or less of the total amount of the ink composition.

公开(公告)号：US20170369723A1

公开(公告)日：2017-12-28

申请号：US15607822

申请日：2017-05-30

Applicant: Seiko Epson Corporation

Inventor： Yusuke MIZUTAKI ,  Tomohito NAKANO ,  Wataru ITO ,  Atsushi MUTO ,  Hiroshige OWAKI

IPC: C09D11/322 ,  B41J2/135 ,  B41J2/04 ,  C07D221/18 ,  C09D11/38 ,  C09D11/326

CPC classification number: C09D11/322 ,  B41J2/04 ,  B41J2/135 ,  B41J2202/01 ,  C07D221/18 ,  C09D11/326 ,  C09D11/38

Abstract: A water-based ink includes a pigment, and water, in which a viscosity at 20° C. is in a range of 2 mPa·s to 7 mPa·s, and a yield value at 20° C. is less than 0.2 mPa, and the yield value at 20° C. when evaporating 25% of the water is less than 0.8 mPa.

公开(公告)号：US20230295451A1

公开(公告)日：2023-09-21

申请号：US18183433

申请日：2023-03-14

Applicant: SEIKO EPSON CORPORATION

Inventor： Kenta UCHIDA ,  Yusuke MIZUTAKI ,  Miki UCHIDA

IPC: C09D11/38 ,  B41J2/16 ,  B41J2/14 ,  C09D11/322 ,  B41M5/00

CPC classification number: C09D11/38 ,  B41J2/1606 ,  B41J2/14 ,  C09D11/322 ,  B41M5/0047

Abstract: A recording method includes a supply step of supplying an ink composition from an ink chamber to an ink jet head and an adhesion step of discharging the ink composition from the ink jet head and allowing the composition to adhere to a recording medium. The ink chamber receives supply of the ink composition from the ink container and has a capacity of 40 mL or more. The ink composition is an aqueous ink composition containing a pigment and an inorganic oxide particle having a specific gravity equal to or higher than that of the pigment.

公开(公告)号：US20210094333A1

公开(公告)日：2021-04-01

申请号：US17035988

申请日：2020-09-29

Applicant: Seiko Epson Corporation

Inventor： Tomohiro ARUGA ,  Jun ITO ,  Kiyomi KUMAMOTO ,  Tomoki MARUYAMA ,  Yusuke MIZUTAKI

IPC: B41M5/00 ,  C09D11/102 ,  C09D11/38 ,  C09D11/328 ,  B41J2/175

Abstract: An ink jet recording apparatus includes an ink composition, an ink encasement in which the ink composition is encased, a recording head that ejects the ink composition, and a carriage configured to move the recording head back and forth. The carriage carries the ink encasement, with the ink encasement integrated with the carriage. The ink encasement has an ink fill port that opens and shuts as a port through which the ink composition is loaded and also has a detector that detects the amount of ink composition encased. The ink composition contains a surfactant with an HLB of 6 or less.

公开(公告)号：US20200248024A1

公开(公告)日：2020-08-06

申请号：US16776717

申请日：2020-01-30

Applicant: Seiko Epson Corporation

Inventor： Shintaro HAMA ,  Tomohiro ARUGA ,  Kiyomi KUMAMOTO ,  Yusuke MIZUTAKI

IPC: C09D11/40 ,  C09D11/322 ,  C09D11/328 ,  C09D11/36 ,  C09D11/037 ,  C09D11/033 ,  C09B35/025 ,  C09B35/03 ,  C09B47/24 ,  C09B11/24 ,  C09B29/46

Abstract: An ink set includes a pigment ink, containing a pigment, and a dye ink containing the compound represented by formula (y-1) below or a salt thereof.