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US 9,868,872 B2Granted
Ink jet ink composition and production method thereof
AssigneeSeiko Epson Corporation
InventorsYasunari Ikeda, Akihito Sao, Shinichi Naito, Miho Nakamura
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Abstract
An ink jet ink composition includes a disperse dye, and a sodium naphthalene sulfonate formalin condensate, in which a ratio of a concentration of sodium ions with respect to a content of the sodium naphthalene sulfonate formalin condensate (Na (ppm)/NSF (% by mass)) is 75 to 550.
Claims7
An ink jet ink composition comprising:
- a disperse dye;
- a silicone-based surfactant;
- and
- a sodium naphthalene sulfonate formalin condensate,
- wherein a ratio of a concentration of sodium ions with respect to a content of the sodium naphthalene sulfonate formalin condensate (Na (ppm)/NSF (% by mass)) is 75 to 550.
2 more elements
A production method of an ink jet ink composition comprising:
- obtaining a dispersion by mixing a silicone-based surfactant with a liquid mixture including a disperse dye and a sodium naphthalene sulfonate formalin condensate;
- heating the dispersion to 60° C. or higher and cooling the dispersion to 25° C. or lower;
- and mixing a moisturizer, a chelating agent, and a pH adjusting agent with the dispersion after the heating of the dispersion and filtering the mixture.
Dependencies are inferred from the claim text.