公开(公告)号：US20220098427A1

公开(公告)日：2022-03-31

申请号：US17487040

申请日：2021-09-28

Applicant: Seiko Epson Corporation

Inventor： Kiyomi KUMAMOTO ,  Yusuke MIZUTAKI ,  Tomohito NAKANO

IPC: C09D11/328 ,  C09D11/037 ,  C09D11/033 ,  C09B67/22

Abstract: An ink accommodating body accommodating an ink composition is provided, in which the ink composition contains water and a first dye that is a compound represented by Formula (B-1) or a salt thereof, a content of the first dye in the ink composition is 0.5% by mass or more with respect to a total amount of the ink composition, and a value of a ratio (A/V) is 1.7 or less where a total surface area of a metal, of the ink accommodating body, in contact with the ink composition is A (cm2) and an accommodation capacity for the ink composition accommodated in the ink accommodating body is V (cm3).

公开(公告)号：US20210095150A1

公开(公告)日：2021-04-01

申请号：US17036012

申请日：2020-09-29

Applicant: Seiko Epson Corporation

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

IPC: C09D11/328 ,  B41J2/175 ,  C09D11/40

Abstract: An ink jet recording apparatus includes at least one aqueous ink composition, at least one ink encasement in which the aqueous ink composition is encased, a recording head that ejects the aqueous ink composition, and a carriage configured to move the ink encasement and 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 aqueous ink composition is loaded, and the maximum external length of the ink encasement in the direction parallel with the direction in which the carriage moves back and forth is 30.0 mm or less.

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：US20180265721A1

公开(公告)日：2018-09-20

申请号：US15892541

申请日：2018-02-09

Applicant: Seiko Epson Corporation

Inventor： Tomohito NAKANO ,  Yusuke MIZUTAKI ,  Keisuke MORITA

IPC: C09D11/30 ,  C09D11/02 ,  C09D11/102

CPC classification number: C09D11/30 ,  C09D11/02 ,  C09D11/102 ,  C09D11/322 ,  C09D11/38

Abstract: An ink composition contains 3-methyl-1,5-pentanediol, di(ethylene glycol) 2-ethylhexyl ether, and water, and has a 1,2-hexanediol content of 0.5% by mass or less. In the ink composition, the mass ratio of 3-methyl-1,5-pentanediol to di(ethylene glycol) 2-ethylhexyl ether is in the range of 13/1 to 67/1.

公开(公告)号：US20160060473A1

公开(公告)日：2016-03-03

申请号：US14837388

申请日：2015-08-27

Applicant: Seiko Epson Corporation

Inventor： Tsuyoshi SANO ,  Tomoyuki OKUYAMA ,  Yusuke MIZUTAKI ,  Shiki KUMAGAI

IPC: C09D11/40 ,  C08K5/3417 ,  C08K5/3437 ,  C09D151/00 ,  C08K5/23 ,  C09D11/36 ,  C09D153/00

CPC classification number: C09D11/40 ,  C08K5/23 ,  C08K5/3417 ,  C08K5/3437 ,  C09D11/106 ,  C09D11/322 ,  C09D11/36 ,  C09D151/003 ,  C09D153/00

Abstract: There is provided an ink composition including: a pigment; a polymer dispersant; water; and a water-soluble organic solvent, in which the pigment includes Pigment Yellow 74, and the integrated value of absorbance of light having a wavelength of 300 nm to 400 nm is 30% or less with respect to 100% of the integrated value of absorbance of light having a wavelength of 300 nm to 600 nm.

Abstract translation: 提供了一种油墨组合物，其包含：颜料; 聚合物分散剂; 水; 和颜料包括颜料黄74的水溶性有机溶剂，并且波长为300nm〜400nm的光的吸光度的积分值相对于吸光度积分值的100％为30％以下 的波长为300nm至600nm的光。