Seiko Epson Corporation

Hiroaki Kumeta

Naoyuki Toyoda

Soichi Yamazaki

Shunsuke Uchizono

Manabu Taniguchi

Kenta Kikuchi

Hideki Okada

Daisuke Ishihara

Koji Imamura

Satoshi Tsubamoto

Kana Mitsuzawa

An ink jet ink composition includes: a colorant; silica particles; 1-(2-hydroxyethyl)-2-pyrrolidone; and water, and the silica particles have in a TEM image thereof, a Di (diameter of the maximum inscribed circle)/Dc (diameter of the minimum circumscribed circle) of 0.7 or more.

Ink jet ink composition and recording method

An ink jet ink composition includes a color material having a ligand; an inorganic compound; and a pH adjuster, and the color material forms a complex with the inorganic compound by the ligand.

An ink jet ink composition includes water, a plant-derived carbonized color material, and a lignin resin.

An ink jet ink composition is a water-based ink jet ink composition and includes a vegetable black-derived colorant, a lignosulfonate salt, and an element A which includes at least one selected from the group consisting of Ca, Mg, Mn, Fe, Al, Si, Cr, Ni, Sr, and Ba, and a content of the element A with respect to a total mass of the ink composition is 50 to 1,700 mass ppm.

Ink jet ink composition, recording method, and recorded matter

An ink for ink jet recording according to an embodiment is an ink for ink jet recording containing pigment, colloidal silica, amine, and amino acid.

Ink for ink jet recording, ink jet recording apparatus, and ink jet recording method

An aqueous ink jet ink composition contains pigment particles, inorganic oxide particles, and resin particles. The content of the inorganic oxide particles is 1.0% to 10.0% relative to the total mass of the ink composition. The ink composition satisfies the following relationship:

Aqueous ink jet ink composition and ink jet printing method

An ink jet printing ink composition contains a pigment, colloidal silica, trimethylglycine, and water, and in which a content of the colloidal silica is lower than or equal to a content of the trimethylglycine.

Ink jet printing ink composition and ink jet printing method

An ink composition contains pigment particles, inorganic oxide particles, and a lactam solvent. The content of the inorganic oxide particles is 5.0% to 10.0% relative to the total mass of the ink composition. The ink composition satisfies the following relationship:

An ink for ink jet recording according to an embodiment is an ink for ink jet recording containing pigment, colloidal silica, and amino acid.

An ink jet recording apparatus includes a line head including a region of nozzles that are formed in an intersecting direction intersecting a transport direction of a recording medium and eject an ink, the region covering a printing region of the recording medium in the intersecting direction, a drying unit that dries the recording medium, a transport unit that transports the recording medium, and a control unit. The ink contains colloidal silica, and the control unit controls the drying unit and the transport unit such that drying of the ink is started within 0.4 second after the ink is attached to the recording medium.

Ink jet recording apparatus and ink jet recording method

There is provided a non-aqueous ink jet ink composition, including a pigment, a non-aqueous solvent, and a surfactant, in which the ink composition contains an acetylene glycol-based surfactant having a HLB value of 1.0 to 6.0 as the surfactant.

Non-aqueous ink jet ink composition

The ink jet ink includes pigment, first resin which has a glass-transition temperature of less than 20&#xb0; C. and a weight-average molecular weight of not more than 10000, second resin which has a glass-transition temperature of not less than 23&#xb0; C., and specific polyoxyalkylene glycol monoalkyl ether.

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Matsumoto, Japan

Hiroaki Kumeta