US 12,338,355 B2
Ink jet composition and ink jet recording method
Nikako Tsukiji, Matsumoto (JP); Soichi Yamazaki, Shiojiri (JP); Koichi Terao, Suwa (JP); Harunobu Komatsu, Matsumoto (JP); and Koji Horiba, Atsugi (JP)
Assigned to SEIKO EPSON CORPORATION, (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Aug. 11, 2022, as Appl. No. 17/885,736.
Claims priority of application No. 2021-131783 (JP), filed on Aug. 12, 2021.
Prior Publication US 2023/0055161 A1, Feb. 23, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C09D 11/328 (2014.01); B41J 2/01 (2006.01); B41J 2/21 (2006.01); B41M 5/00 (2006.01); B41M 7/00 (2006.01); C09D 11/104 (2014.01); D06P 1/52 (2006.01); D06P 5/20 (2006.01); D06P 5/30 (2006.01)
CPC C09D 11/328 (2013.01) [B41J 2/01 (2013.01); B41J 2/2107 (2013.01); B41M 5/0023 (2013.01); B41M 5/0047 (2013.01); B41M 7/009 (2013.01); C09D 11/104 (2013.01); D06P 1/5271 (2013.01); D06P 5/2077 (2013.01); D06P 5/30 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An ink jet composition comprising:
water;
a polyester resin having sulfo groups; and
a colorant,
wherein the colorant is contained in particles formed from a material containing the polyester resin,
the particles contain at least two types of polyester resins having different sulfo-group content rates, and
the particles have an average particle diameter of 100 nm or less and are contained in the ink jet composition at a content rate of 15 percent by mass or more.