Seiko Epson Corporation

Satoru Miura

Taketoshi Kagose

Hiroki Nakane

Takashi Teshima

Ken Ikuma

Toru Saito

Jun Ito

Hiroaki Kida

Toshiyuki Miyabayashi

Chigusa Sato

Hiroyuki Kajimoto

Koji Akioka

Hiroshi Kaiho

Hiroshi Wada

Toru Takahashi

Kazuyoshi Tanase

Takamitsu Kondo

Nobuhiro Miyakawa

Takayuki Tamaki

Kazuyuki Kagami

Shunichiro Yamanaka

An ink jet recording method uses an ink jet recording apparatus including a plurality of heads arranged in parallel in a first direction, each of which ejects droplets of a different radiation-curable ink composition onto a recording medium, and first light sources provided for corresponding heads so as to be disposed at a predetermined side of the corresponding heads. The first light sources emit active radiation to irradiate the droplets on the recording medium. The method includes ejecting droplets of the ink compositions from the heads onto the recording medium, and performing a first irradiation by irradiating the droplets of each ink composition with the active radiation from the corresponding first light source at an irradiation energy within 500 ms after the droplets have landed. The irradiation energy is in the range of 5% to 10% of the energy Eat which the ink composition is 90% cured.

Ink jet recording method

An ink composition has a viscosity of 25 mPa&#xb7;s to 35 mPa&#xb7;s at 20&#xb0; C., wherein a, b, and c are 800 or more, 7.4 to 14, and 0.16 to 0.22, respectively, when a cylindrical portion is formed by expanding the ink composition so as to have a free surface parallel to the expanding direction of the ink composition, the rate of change in width of the cylindrical portion with time is measured in the expanding direction thereof, and the rate of change in width of the cylindrical portion with time is fit to a quadratic function given by the following equation:&#x2003;&#x2003;(1)where S is the rate of change in width of the cylindrical portion and t is the time in seconds.

Ink composition and recording method

Provided are a radiation-curable ink composition including phenoxyethyl acrylate (A) in an amount of from 20 to 55 mass % of the total reaction components, a multifunctional acrylate (B) in an amount of from 20 to 50 mass % of the total reaction components, and a black pigment (F1); and a radiation-curable ink composition including phenoxyethyl acrylate (A) in an amount of from 20 to 55 mass % of the total reaction components, a multifunctional acrylate (B) in an amount of from 10 to 50 mass % of the total reaction components, and a yellow pigment (F2).

Radiation-curable ink composition, ink jet recording method, and recorded matter

An ink composition for ultraviolet curable ink jets including monomer A represented by a general formula (I):CH2=CR1-COOR2O&#x2014;CH&#x2550;CH&#x2014;R3&#x2003;&#x2003;(I)

Ink composition for ultraviolet curable ink jets, ink jet recording apparatus using the same, ink jet recording method using the same, and ink set

There is provided a printing apparatus including: a transport unit which transports a medium in a transport direction, a first head, a first light source which is provided further to the downstream side in the transport direction than the first head, a second head which is provided further to the downstream side in the transport direction than the first head and the first light source, and a second light source which is provided further to the downstream side in the transport direction than the second head and which irradiates light with a stronger irradiation energy than the irradiation energy of the first light source, in which the first head ejects ink of one color of any among magenta ink, cyan ink, and black ink onto a medium, and the second head ejects yellow ink onto the medium.

Printing apparatus and printing method

Ink jet recording method and ink jet recording apparatus

An ink composition for ultraviolet curable ink jets including monomer A represented by a general formula (I):CH&#x2550;CR&#x2014;COOR&#x2014;O&#x2014;CH&#x2550;CH&#x2014;R&#x2003;&#x2003;(I)

A carriage apparatus of an ink jet recording apparatus, which discharges a photocurable ink and photocures the discharged ink, thereby forming a desired image on the recording medium, includes a plurality of recording heads for discharging the ink with respect to the recording medium; a recording carriage on which the plurality of recording heads is mounted so as to be divided into a plurality of recording portions; a plurality of photocuring units which is disposed to photocure the ink on the recording medium; and a photocuring carriage on which a plurality of photocuring units is mounted and which is disposed in a plane with a gap between the photocuring carriage and the recording carriage, wherein, in the photocurable carriage, a plurality of holding portions for holding the respective photocuring units forms a narrow part, respectively and is connected with each other.

Liquid ejecting apparatus and liquid ejecting printing apparatus

A radiation-curable ink composition includes an acrylate monomer of which homopolymer has a glass transition temperature of not higher than 0&#xb0; C. in an amount of 20% by mass or more and 65% by mass or less based on the total amount of reaction components; a monofunctional acrylate having an alicyclic structure; and a multifunctional acrylate having an alicyclic structure.

Growing community of inventors

Matsumoto, Japan

Satoru Miura