Seiko Epson Corporation

Mitsui Chemicals, Inc.

Union Chemicar Co., Ltd

Kenichi Seguchi

Takayoshi Kagata

Mitsuaki Kosaka

Akira Mizutani

Tsuyoshi Sano

Tadashi Watanabe

Kazuhiko Yamamoto

Miharu Kanaya

Chigusa Sato

Junhua Zhang

Akiko Matsuzaki

Toshihiro Yoshimura

Emi Takeuchi

Yasuyuki Kagawa

Masayuki Matsubara

Hideyuki Uemura

Ichiro Miyamoto

Masayoshi Iwasaki

A printing method is used for printing a shrink film with radiation-curable ink. The printing method includes forming an image on the shrink film with a first radiation-curable ink by an ink jet method, and forming a fixing pattern by applying a second radiation-curable ink onto a surface of the shrink film that is to come into contact with an object to be wrapped with the shrink film.

Methods for printing and wrapping

A recording method includes an adhesion step of ejecting an ink composition from an ink jet head to be adhered to a recording medium; and a primary heating step of heating the adhered ink composition, and the adhesion step includes at least one main scanning in which while a relative position of the ink jet head and the recording medium is changed in a main scanning direction, the ink composition is adhered to the recording medium and at least one sub-scanning in which the relative position of the ink jet head and the recording medium is changed in a sub-scanning direction. In the recording method described above, the number of the main scannings performed on the same recording region of the recording medium is 5 or less, the ink composition is a water-based ink containing a pigment, a resin, and an organic solvent, and in a chart of logarithmic attenuation with temperature obtained by measurement of the ink composition using a rigid-body pendulum characteristics test, the ink composition has a temperature of a first thickening peak of 30° C. to 65° C. and a temperature of a maximum thickening peak of 70° C. or more.

Recording method and ink jet recording apparatus

A recording method according to the present disclosure is a recording method that performs recording on a recording medium, the recording method including a white ink adhesion step of adhering a white ink composition containing a white color material to the recording medium and a non-white ink adhesion step of adhering a non-white ink composition containing a non-white color material to the recording medium, in which the white ink adhesion step and the non-white ink adhesion step are performed by relative scanning between a recording head and the recording medium, the white ink adhesion step and the non-white ink adhesion step are performed by the same relative scanning on the same scanning region of the recording medium, and in the recording region to which the white ink composition and the non-white ink composition are adhered, an adhesion amount of the white ink composition is 60% by mass or less with respect to 100% by mass of an adhesion amount of the non-white ink composition per unit region.

Recording method and recording apparatus

An ink jet recording method includes: a treatment liquid adhesion step of adhering a treatment liquid containing an aggregating agent to a recording medium; an ink adhesion step of adhering an aqueous ink composition containing a colorant to the recording medium by ejection thereof from an ink jet head; a first heating step of heating the recording medium to which the treatment liquid and the aqueous ink composition are adhered to a first surface temperature by a first heating mechanism; a second heating step of heating the recording medium after the first heating step to a second surface temperature which is higher than the first surface temperature by a second heating mechanism provided at downstream than the first heating mechanism in a recording medium transport direction; and a cooling step of, after the first heating step and before the second heating step, cooling the recording medium by a cooling mechanism, and by the cooling step, a surface temperature of the recording medium is decreased to a temperature lower than the first surface temperature.

Ink jet recording method and ink jet recording apparatus

An ink jet recording method includes a treatment liquid attachment step, in which a treatment liquid containing a flocculant is attached to a recording medium, and an ink attachment step, in which an ink composition containing a pigment and resin particles is attached to the recording medium by ejecting the ink composition from an ink jet head. When the ink composition is mixed in a 1:1 ratio by mass with a 6% by mass aqueous solution of magnesium sulfate heptahydrate, the volume-average diameter of particles in the mixture is from 2000 to 6000 nm.

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

An ink jet recording method includes an ink attachment step, in which an aqueous ink composition is ejected from a recording head and attached to a recording medium, and a treatment liquid attachment step, in which a treatment liquid containing a flocculant is ejected from a recording head and attached to the recording medium. The recording head for ejecting the treatment liquid has a circulation channel in which the treatment liquid is circulated.

Ink jet recording method, ink jet recording apparatus, and set of recording head and treatment liquid

An ink set includes a first ink and a second ink which are water-based ink compositions, in which each of the first ink and the second ink includes a pigment and resin including resin particles, the first ink includes a first pigment and the second ink includes a second pigment different from the first pigment, the first ink and the second ink are mixed with a 5% by mass water-based solution of magnesium sulfate heptahydrate to increase a volume average particle diameter of the ink and a difference in the volume average particle diameter for the inks in the inks after mixing is 40% or less, and the ink set is used for recording together with a treatment liquid including an aggregating agent for aggregating the components of the water-based ink compositions.

Ink set and recording method

An ink jet recording method includes a treatment liquid attachment step, in which a treatment liquid containing at least one flocculant is attached to a recording medium, and an ink attachment step, in which an aqueous ink composition is attached to the recording medium. The treatment liquid attachment step and the ink attachment step are performed through multiple main scans and multiple sub-scans. A main scan is a movement of a recording head in a main scanning direction, and a sub-scan is a movement of the recording medium in a sub-scanning direction, which crosses the main scanning direction. The recording head has a first ejecting nozzle group, which is a line of nozzles arranged in the sub-scanning direction and ejects the treatment liquid, and a second ejecting nozzle group, which is a line of nozzles arranged in the sub-scanning direction and ejects the aqueous ink composition. The first ejecting nozzle group overlaps, at least in a portion, the second ejecting nozzle group when projected in the main scanning direction. When the treatment liquid is tested using a rigid-body pendulum characteristics tester at 35.0&#xb0; C. for 20.0 minutes, the minimum oscillation period of the rigid-body pendulum is 70.0% or more of the maximum oscillation period of the rigid-body pendulum.

Ink jet recording method, ink jet recording apparatus, and treatment liquid

An ink jet recording method includes applying a reaction solution containing a coagulant for coagulating components of an ink composition onto a recording medium and applying an ink composition onto the recording medium by discharging the ink composition from an ink jet head. The ink composition is an aqueous ink jet composition which contains a first wax having a melting point of 100&#xb0; C. or higher, a second wax having a melting point of 70&#xb0; C. or lower, and water.

Ink jet recording method and ink set

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

Provided is an ink jet recording method including heating a recording medium, attaching an aqueous ink composition to the recording medium heated in the heating by ejecting the aqueous ink composition through a nozzle, the aqueous ink composition containing water, a solvent, and resin particles, and blowing wind to a surface of the recording medium in the attaching. The resin particles include particular resin particles that are dispersed in water after leaving a mixture liquid of the particular resin particles to stand for 2 hours at 40&#xb0; C. and are not dispersed in water after leaving the mixture liquid to stand for 1 hour at 80&#xb0; C., the mixture liquid containing a composition of the solvent contained in the aqueous ink composition and the particular resin particles as a solid resin component in a mass ratio of 1:1.

An ink jet recording method includes heating a recording medium, and attaching an aqueous ink composition to the heated recording medium by ejecting the aqueous ink composition through a nozzle. The aqueous ink composition contains water, a solvent, and resin particles. In the attaching step, a temperature difference between a temperature of the nozzle and a surface temperature of the heated recording medium is &#x2212;4 to 8&#xb0; C. The resin particles include particular resin particles formed from a resin whose decrease rate of absorbance of light having a wavelength of 400 nm is 15% or smaller in 1 hour at 40&#xb0; C. and 10% or larger in 1 hour at 80&#xb0; C. in a liquid mixture containing the solvent contained in the aqueous ink composition and the particular resin particles such that a resin solid component of the liquid mixture is 0.5% by mass.

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

A method for driving a liquid ejecting apparatus is provided. The apparatus includes a liquid ejecting head having nozzles in a nozzle surface and being configured to eject a liquid from the nozzles, a wiper being used for wiping the nozzle surface, and a maintenance liquid supply mechanism being configured to supply a maintenance liquid with which it is possible to suppress deterioration of recovery performance of, among the nozzles, a defective nozzle from which the liquid is not ejected properly. The method includes: a first liquid ejection of performing liquid ejecting operation to eject the liquid from the nozzles toward a medium; a wiping of performing wiping operation to wipe the nozzle surface by means of the wiper, with the liquid ejecting operation suspended, and put the maintenance liquid into the nozzles; and a second liquid ejection of resuming the liquid ejecting operation after the wiping.

Liquid ejecting apparatus driving method, and liquid ejecting 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.

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Okaya, Japan

Kenichi Seguchi