公开(公告)号：US10357979B2

公开(公告)日：2019-07-23

申请号：US15581363

申请日：2017-04-28

申请人： Seiko Epson Corporation

发明人： Yuho Miyake ,  Shintaro Hama ,  Ryosuke Teramoto ,  Tetsuya Aoyama

IPC分类号： B41J2/01 ,  B41J2/21 ,  C09D11/38

摘要： An ink composition at least contains a compound A having a hydroxy group and a compound B having an aldehyde group as polyoxyalkylene alkyl ether surfactants. The mass ratio of the compound B to the compound A is 0.5×10−4 to 30×10−4.

公开(公告)号：US10717888B2

公开(公告)日：2020-07-21

申请号：US16037147

申请日：2018-07-17

申请人： Seiko Epson Corporation

发明人： Shintaro Hama ,  Ryosuke Teramoto ,  Kiyomi Kumamoto ,  Tetsuya Aoyama ,  Tomohiro Aruga ,  Kazuma Tsutsumi

IPC分类号： C09D11/40 ,  B41M5/00 ,  B41J2/01 ,  C09D11/328 ,  C09D11/033 ,  C09D11/38

摘要： An ink composition contains dyes A and B. Dye A has a width at a half height of the largest peak in the absorption spectrum between 380 nm and 780 nm that is 50 nm or less. Dye B has a corresponding width at the half height that is 70 nm or more. Dye A is present in an amount of 40% by mass or more and 90% by mass or less of the total mass of the dyes.

公开(公告)号：US11578224B2

公开(公告)日：2023-02-14

申请号：US16776657

申请日：2020-01-30

申请人： Seiko Epson Corporation

发明人： Tomohiro Aruga ,  Shintaro Hama ,  Kiyomi Kumamoto

IPC分类号： C09D11/38 ,  C09D11/40 ,  C07F1/08 ,  C07D311/84 ,  C07D401/14 ,  C07D251/54

摘要： An ink set includes a first ink containing the compound represented by formula (y-1) or its salt, a second ink containing one or two or more of the compound represented by formula (m-1) or its salt, the compound represented by formula (m-2) or its salt, a compound represented by formula (m-3) or its salt, and the compound represented by formula (m-4) or its salt, and a third ink containing one or two or more of a compound represented by formula (c-1) or its salt, the compound represented by formula (c-2) or its salt, the compound represented by formula (c-3) or its salt, a compound represented by formula (c-4) or its salt, and the compound represented by formula (c-5) or its salt.

公开(公告)号：US12077671B2

公开(公告)日：2024-09-03

申请号：US17215285

申请日：2021-03-29

申请人： Seiko Epson Corporation

发明人： Yasuhiro Oki ,  Daisuke Sakuma ,  Hidehiko Komatsu ,  Shintaro Hama

IPC分类号： C09D11/033 ,  C08K5/053 ,  C08K5/06 ,  C08K5/3415 ,  C09D11/328

CPC分类号： C09D11/033 ,  C08K5/053 ,  C08K5/06 ,  C08K5/3415 ,  C09D11/328

摘要： An ink jet ink composition contains a color material, an organic solvent, and water. The ink jet ink composition contains N-hydroxyethylpyrrolidone and N-vinyl-2-pyrrolidone as the organic solvent.

公开(公告)号：US11572485B2

公开(公告)日：2023-02-07

申请号：US16776717

申请日：2020-01-30

申请人： Seiko Epson Corporation

发明人： Shintaro Hama ,  Tomohiro Aruga ,  Kiyomi Kumamoto ,  Yusuke Mizutaki

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

摘要： 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.

公开(公告)号：US10016981B2

公开(公告)日：2018-07-10

申请号：US15602458

申请日：2017-05-23

申请人： Seiko Epson Corporation

发明人： Shintaro Hama ,  Ryosuke Teramoto ,  Yuho Miyake ,  Tetsuya Aoyama

IPC分类号： B41J2/165 ,  C09D11/40 ,  C09D11/033 ,  C09D11/322 ,  C09D11/328 ,  C09D11/037 ,  C09D11/30 ,  C09D11/54

CPC分类号： B41J2/16505 ,  B41J2/16517 ,  B41J2/16538 ,  B41J2/2107 ,  C09D11/033 ,  C09D11/037 ,  C09D11/30 ,  C09D11/322 ,  C09D11/328 ,  C09D11/38 ,  C09D11/40 ,  C09D11/54

摘要： An aqueous ink set for ink jet recording includes an aqueous pigment ink containing water and a pigment as a coloring agent and an aqueous dye ink containing water and a dye as a coloring agent, in which the concentration of the divalent metal ions of the pigment ink is 10 ppm or more, and the potassium ion concentration of the dye ink is 50 ppm or less.