Seiko Epson Corporation

Mitsui Chemicals, Inc.

Tsuyoshi Sano

Hiroshi Kato

Takayoshi Kagata

Ippei Okuda

Kiyohiko Takemoto

Shiki Hirata

Takeshi Tanoue

Akira Mizutani

Shohei Shiono

Shuichi Koganehira

Atsushi Denda

Kenichi Seguchi

Bunji Ishimoto

Seishin Yoshida

Kazuaki Watanabe

Toshimi Fukui

Yoshihiko Matsuzawa

Hideki Kawasaki

Keitaro Nakano

Hitoshi Ota

Hidenori Usuda

Takashi Oyanagi

Naoki Koike

Kunihiko Matsuhashi

Shinichi Kato

Akio Ito

Katsuko Aoki

Tadashi Watanabe

Shoki Kasahara

Shuichi Kataoka

Masayuki Momose

Junko Nakamoto

Toshihiro Yoshimura

Saori Yamaki

Yasuyuki Kagawa

Takahiro Katakura

Hiroshi Ito

Yuji Aoki

Hidehiko Komatsu

Toru Miyamoto

Yuko Yamamoto

Satoshi Yamazaki

Miharu Kanaya

Chigusa Sato

Hiroko Hayashi

Mitsuaki Yoshizawa

Chiyoshige Nakazawa

Hiroki Nakane

Hironori Sato

Yusuke Mizutaki

Mitsuaki Kosaka

Kiyoshi Nakamura

Koji Morikoshi

Kyohei Tanaka

Kaoru Momose

Masaru Kumagai

Kazuhide Kubota

Midori Sekine

Teruhito Kojima

Masaaki Itano

Tomohito Nakano

Shiki Kumagai

Hiroko Wachi

Hiroshi Maekawa

Yuko Hishida

Yuji Hatanaka

Hiroaki Segawa

Yoshinobu Yoshida

Shohei Namikoshi

Koichi Murayama

Yukiko Egami

Kawasaki Hideki

Fukui Toshimi

Asako Kubota

Kazuko Suzuki

Shiori Masuda

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

The present invention relates to an ink jet recording method for recording a white overlaying layer and a non-white pattern layer to a recording medium, printed matters obtained by the recording method, and systems for realizing the recording method thereof.

Ink jet recording method for recording pattern layer and white overlaying layer on longitudinal sheet

Provided is an ink set of radiation-curable ink jet compositions each including a polymerizable compound component. The ink set includes a color ink and a clear ink as the radiation-curable ink jet compositions. The polymerizable compound component contained in the clear ink includes a monomer A having a volume of 260 angstromor more and an area of 25 angstromor more in the height direction with respect to a long side defined by a van-der-Waals radius, and the content of the monomer A contained in the clear ink is 80 mass % or more based on the total amount of the polymerizable compound component.

Ink set and ink jet method

A water-based ink jet ink composition includes: a coloring material; and resin, a content of the coloring material being equal to or less than 1.5% by mass with respect to the ink composition, a change in a volume average particle diameter of the resin after mixing a water-mediated solution for the resin and a 0.3 M magnesium sulfate aqueous solution is equal to or less than three times as large as a change in the volume average particle diameter before the mixing, and the ink composition is used by being caused to adhere to a recording medium along with a processing solution that contains a coagulant for coagulating constituents of the ink composition.

Water-based ink jet ink composition, recording method, and recording apparatus

An ink jet recording method is provided for a low or non-absorbable recording medium using a solution containing a colored ink, a clear ink, and an aggregating agent for aggregating constituents in the colored ink. The method includes: causing the solution containing the aggregating agent to adhere to the recording medium; and a main scanning in which the colored and the clear inks are ejected while relative positions of an ink jet head and the recording medium are changed to a main scanning direction, and a sub-scanning in which the relative positions of the ink jet head and the recording medium are changed to a sub-scanning direction. The main scanning involves a region where a recording region in which the colored ink is ejected in the main scanning and a recording region in which the clear ink is ejected in the main scanning overlap one another.

Ink jet recording method and recording apparatus

A water-based inkjet ink composition comprising composite resin fine particles composed of a first resin and a second resin, and having an SP value of from 9.0 to 12.0 (cal/cm), wherein the SP value of the second resin is higher than the SP value of the first resin, and the first resin has a higher mass than the second resin.

Water-based inkjet ink composition

An ink jet recording method is provided for recording white and non-white ink compositions onto a moving recording medium. The recording medium includes a first region where both the white and non-white ink compositions are adhered, and a second region where only the white ink composition is adhered. Further, one or both of Conditions (i) and (ii) is satisfied. Condition (i): The amount of the white ink composition adhered in the first region is less than the amount of the white ink composition adhered in the second region. Condition (ii): The number of times the white ink composition is scanned across the first region is less than the number of times the white ink composition is scanned across in the second region.

Recording method having differing amounts of white ink in adjacent regions or having a different number of scans in adjacent regions

An ink jet composition set includes a radiation-curable color composition, which contains a perinone-based pigment, a polymerizable compound and a polymerization initiator, and a radiation-curable clear composition, which contains an ultraviolet absorber, a polymerizable compound, and a polymerization initiator.

Ink jet composition set and ink jet recording method

An ink jet recording method according to the present embodiment includes ejecting a water-based ink composition where a content of an organic solvent having a standard boiling point of 280&#xb0; C. or more is 0.5% by mass or less from a head nozzle and attaching the water-based ink composition to a recording medium, in which a contact angle between at least a part of the surface of the member in contact with the water-based ink composition in the members in the head and the water-based ink composition is 30&#xb0; or less, and the surface of the member in contact with the water-based ink composition is formed of a material having an SP value of 9 or less.

Ink jet recording method and control method of ink jet recording apparatus

An aqueous ink composition contains an organic solvent, a surfactant, and resin fine particles. The resin of the resin fine particles takes 500 minutes or more to melt at 40&#xb0; C. with the surfactant, which is a temperature relatively close to the temperature the ink jet head is heated to by the platen or the like during recording. Such an aqueous ink composition exhibits a good filling property and can be continuously ejected stably.

Aqueous ink composition and ink jet recording method

An ink set includes an ink composition for background containing a pigment for background and a coloring ink composition containing a coloring pigment. Provided that the surface tension of the ink composition for background is S(mN/m), and the surface tension of the coloring ink composition is S(mN/m), Sand Ssatisfy &#x2212;5&#x3c;(S&#x2212;S)&#x3c;4. the ink set is used in a first mode in which the ink composition for background and the coloring ink composition are recorded on a recording medium by being caused to be adjacent to each other, or in a second mode in which the ink composition for background is recorded on an image which has been recorded using the coloring ink composition. A recording apparatus includes this ink set.

Ink set and recording apparatus

An ink jet recording method includes attaching an ink composition, with which a pressure chamber of an ink jet head is filled, to a recording medium by discharging the ink composition via a nozzle port, in which the ink jet head includes a step between the pressure chamber and the nozzle port, the ink composition contains water, a resin, and an organic solvent including at least a nitrogen-containing solvent, and the organic solvent includes an organic solvent, in which a difference in a SP value between the organic solvent and the resin is within 5, in a range of 0.1 part by mass to 0.4 parts by mass with respect to 1 part by mass of water, and does not include an organic solvent which has a standard boiling point of equal to higher than 280&#xb0; C. and the content of more than 5% by mass in the ink composition.

Ink jet recording method and method of controlling ink jet recording apparatus

An ink jet recording method includes: a reaction liquid application step of ejecting from an ink jet head, a reaction liquid containing an aggregating agent which aggregates an ink composition so as to adhere the reaction liquid to a recording medium which is a non-absorptive recording medium or a low-absorptive recording medium; a reaction liquid drying step of drying the reaction liquid adhered to the recording medium; and an ink composition application step of ejecting the ink composition from the ink jet head so as to apply the ink composition to the recording medium to which the reaction liquid is adhered. When the ink composition is to be adhered, the reaction liquid is dried so that an evaporated amount of water and an organic solvent contained in the reaction liquid are 70 percent by mass or more and 60 percent by mass or less, respectively.

Ink jet recording method

An ink composition includes a white coloring material, polymer particles, and a solvent, the polymer particles satisfying the relationship represented by the following expression (1).&#x2266;0.33+20&#x2003;&#x2003;(1)

Ink composition

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Shiojiri, Japan

Tsuyoshi Sano