Seiko Epson Corporation

Shohei Namikoshi

Kiyoshi Nakamura

Yoshinobu Yoshida

Tsuyoshi Sano

Chigusa Sato

Toshiyuki Yoda

Kyohei Tanaka

Keita Hanawa

Takuya Ota

Asako Kubota

An ink jet recording apparatus including an ink jet head for ejecting and attaching a radiation-curable ink jet composition to a recording medium, an inert gas supply portion for supplying an inert gas to the recording medium to which the radiation-curable ink jet composition is attached, and an irradiation portion for applying radiation to the radiation-curable ink jet composition attached to the recording medium under supply of an inert gas, wherein the inert gas supply portion slantingly ejects the inert gas toward just under the irradiation portion.

Ink jet recording apparatus having an inert gas supply portion

A radiation-curable ink jet composition contains a polymerizable compound, a white pigment, and inorganic particles different from the white pigment. The polymerizable compound includes a monofunctional polymerizable compound. The content of the monofunctional polymerizable compound is 80 mass % or more with respect to the total mass of the polymerizable compound contained in the radiation-curable ink jet composition.

Radiation-curable ink jet composition, ink set, and method for manufacturing recorded material

An ink jet recording method is a method in which a cyan ink, a magenta ink, a black ink, and a yellow ink radiation that are curable inks are ejected from ink jet heads to attach the radiation curable inks to a recording medium. The method includes, in this order, a first step of attaching the cyan ink, the magenta ink, and the black ink onto the recording medium and applying temporary curing radiation to the recording medium and a second step of attaching the yellow ink onto the recording medium and applying full curing radiation to the recording medium without applying the temporary curing radiation.

Ink jet recording method using temporary curing radiation

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Shiojiri, Japan

Shohei Namikoshi