Seiko Epson Corporation

Miho Nakamura

Yasunari Ikeda

Shinichi Naito

Akihito Sao

Hideki Oguchi

Takeshi Yano

Keiji Iida

Takayoshi Kagata

Jun Ito

Hiroshi Fukumoto

Kenichiro Kubota

Makoto Nagase

Katsuko Aoki

Tomoki Shinoda

Shugo Hattori

Shigeki Kawada

An ink set which is used for sublimation transfer includes a first ink, and a second ink. The first ink has a color after transfer of |a*|&#x2264;10 and |b*|&#x2264;10 in a CIELAB color space, and contains a first disperse dye dispersed by a first dispersion resin. The second ink has a color after transfer of |a*|&#x3e;10 or |b*|&#x3e;10 in the CIELAB color space, and contains a second disperse dye dispersed by a second dispersion resin. A glass transition temperature of the first dispersion resin and is different than that of the second dispersion resin.

Ink set and recording method

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.

Ink jet ink composition and production method thereof

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.

There is provided an ink jet ink set for sublimation transfer, including: a first ink composition containing a first disperse dye and a first dispersant; and a second ink composition containing a second disperse dye and a second dispersant, in which the first disperse dye is the same as the second disperse dye, the content of the first disperse dye in the first ink composition is equal to or greater than the content of the second disperse dye in the second ink composition, the ratio A of the content of the first disperse dye in the first ink composition to the content of the first dispersant in the first ink composition is equal to or greater than the ratio B of the content of the second disperse dye in the second ink composition to the content of the second dispersant in the second ink composition.

Ink jet ink set for sublimation transfer, dyed product, and manufacturing method thereof

Provided is a sublimation transfer ink set including a yellow ink composition containing a yellow dye; a magenta ink composition containing a magenta dye; a cyan ink composition containing a cyan dye; a first black ink composition; and a second black ink composition, in which the first black ink composition contains the yellow dye and the magenta dye, and the cyan dye, and the second black ink composition contains a C.I. disperse blue 360.

Sublimation transfer ink set, dyed product and manufacturing method thereof

There is provided an ink set including a water-based cleaning transportation liquid, and a disperse dye ink composition, in which the water-based cleaning transportation liquid includes water and at least one of an aromatic sulfonate formalin condensate and a lignin sulfonate as a dispersing agent I, without including a coloring material, and the disperse dye ink composition includes a disperse dye, water, and a dispersing agent II.

Ink set

An ink jet black ink composition for sublimation transfer includes water, a water-soluble organic solvent, C.I. Disperse Blue 360, and two or more disperse dyes that achieve a reflectance of less than 0.1 at a wavelength of 380 nm or more and 520 nm or less on a dyed article.

Ink jet black ink composition for sublimation transfer, and dyed article and method for producing dyed article

An ink jet ink composition for sublimation transfer includes dye A and a dye B, in which the dye A is a disperse dye which has a molecular weight of 380 or less and an anthraquinone skeleton having a water-soluble group in a molecule, the dye B is a disperse dye which has a molecular weight of 400 or greater, and in the ink jet ink composition for sublimation transfer, dye solubility of the dye A is greater than dye solubility of the dye B.

Ink jet ink composition for sublimation transfer, ink set, and method of manufacturing dyed product

An ink composition for ink jet recording, containing: a dye; organic solvents; and water, wherein a ratio (S/S) of a content (S) of the first organic solvent and a content (S) of the second organic solvent being 15.3 or more and 205 or less: and wherein the organic solvents including a first organic solvent satisfying a following property (A) and a second organic solvent not satisfying the property (A), and property (A): when a mixture with polyvinyl alcohol is produced, a cluster having a mass of 70% or more based on a total mass of the mixture is formed and when a load of 5.3 g/mmor more and 7.1 g/mmor less is applied to the cluster, a cluster having a mass of 90% or more based on a total mass of the cluster is formed.

Ink composition for ink jet recording and ink jet recording method

Disclosed is ink composition used in a recording apparatus provided with a pressure regulation valve which performs opening and closing operations to adjust a pressure in a recording head and is covered with an elastic member. The ink composition includes a slip agent and a lactone system medium. The slip agent is preferably at least one kind selected from a group consisting of a silicon system compound, a hydrocarbon system compound, a fluorine system compound, an amide system compound, and acrylic compound. In addition, the content of the slip agent is preferably not more than 1% by mass.

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Shiojiri, Japan

Miho Nakamura