Seiko Epson Corporation

Manabu Taniguchi

Naoyuki Toyoda

Soichi Yamazaki

Hiroaki Kumeta

Shunsuke Uchizono

Shigemi Wakabayashi

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 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 oil-based ink jet recording liquid includes a colorant and an oxidatively polymerizable oil-based medium having at least two unsaturated bonds. The ink jet recording liquid has an iodine value of greater than or equal to 65.

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Shiojiri, Japan

Manabu Taniguchi