Seiko Epson Corporation

Ippei Okuda

Tsuyoshi Sano

Mitsuaki Kosaka

Tetsuya Aoyama

Akiko Matsuzaki

Akira Mizutani

Tadashi Watanabe

Takeshi Yano

Yuta Asakawa

Takayoshi Kagata

Hidehiko Komatsu

Kimitaka Kamijo

Shoki Kasahara

Yuji Aoki

Shuichi Koganehira

Naoki Koike

Mitsuaki Yoshizawa

Hironori Sato

Katsuko Aoki

Shohei Shiono

Keigo Ando

Akiko Kawase

Naoki Maruyama

Mami Tojino

Yoshiko Azami

Kunihiro Fujita

Shiho Haizuka

An ink set according to one embodiment of the present disclosure includes: a water-based ink composition containing a colorant; a first treatment liquid containing an aggregating agent; and a second treatment liquid containing an aggregating agent. In the ink set described above, a content of the aggregating agent in the first treatment liquid is 0.60 mol/kg or more, a content of the aggregating agent in the second treatment liquid is less than 0.60 mol/kg, the first treatment liquid is used together with the ink composition for recording on a recording medium which is a low-permeable substrate, and the second treatment liquid is used together with the ink composition for recording on a recording medium which is an impermeable substrate.

Ink set, recording apparatus, and recording method

A recording method includes a white ink attachment step, in which a white ink composition containing a white colorant is attached to a recording medium; a non-white ink attachment step, in which a non-white ink composition containing a non-white colorant is attached to overlap the attached white ink composition; a first treatment liquid attachment step, accompanying the white ink attachment step and in which a treatment liquid containing a flocculant is attached to the recording medium; and a second treatment liquid attachment step, accompanying the non-white ink attachment step and in which a treatment liquid containing a flocculant is attached to the recording medium. The white ink composition experiences a five-fold or greater increase in viscosity when mixed with a 7% by mass aqueous solution of calcium formate in a ratio by mass of 10:1, the white ink composition to the aqueous solution of calcium formate. The attachment density of the treatment liquid in the second treatment liquid attachment step is lower than that in the first treatment liquid attachment step.

Recording method and recording apparatus

A recording device includes: a first nozzle group including a plurality of nozzles configured to discharge, to a medium, a first dot that is a dot of a reaction liquid; a second nozzle group including a plurality of nozzles configured to discharge, to the medium to which the reaction liquid is discharged, a second dot that is a dot of ink containing a color material that coagulates with the reaction liquid; and a control unit configured to control discharging of the first dot by the first nozzle group and discharging of the second dot by the second nozzle group, in which the control unit controls arrangement, on the medium, of the first dot discharged by the first nozzle group so as to be more regular than arrangement, on the medium, of the second dot discharged by the second nozzle group.

Recording device and recording method for discharging ink and reaction liquid

An ink set includes a reaction liquid containing coagulant; a first ink containing a color material; and a second ink containing a color material. The ink set is used for recording on a non-absorptive recording medium or a low-absorptive recording medium and for imparting the reaction liquid, the first ink, and the second ink to the recording medium in a superimposed manner in this order.

Ink set and recording method using the same

An ink composition is used for recording on a low-absorbing recording medium or a non-absorbing recording medium and is an aqueous ink jet ink containing a pigment, and the ink composition includes 1.2 to 2.9 percent by mass of an amine with respect to a total mass of the ink composition, and an organic solvent other than an amine. The organic solvent includes an organic solvent having a standard boiling point of 150° C. to 250° C. in an amount of 5 to 30 percent by mass with respect to the total mass of the ink composition, and the organic solvent having a standard boiling point of 150° C. to 250° C. includes a diol having a water mixture viscosity of 3.0 mPa·s or more.

Ink composition and recording method

A recording method for performing recording on a recording medium includes a processing liquid attaching step of attaching a processing liquid including an aggregating agent to the recording medium, a white ink attaching step of attaching a white ink composition including a white coloring material to the recording medium, and a non-white ink attaching step of attaching a non-white ink composition including a non-white coloring material to the recording medium, in which attachment of the white ink composition and attachment of the non-white ink composition are performed by relative scanning of a recording head and the recording medium, and attachment of the white ink composition and attachment of the non-white ink composition are performed on a scanning region of the recording medium by a relative scanning.

Recording method and ink jet recording apparatus

A recording method for recording on a recording medium, which is a non-white recording medium, includes a white ink adhering step of adhering a white ink containing a white coloring material to the recording medium, and a non-white ink adhering step of adhering a non-white ink containing a non-white coloring material to the recording medium, in which the white ink adhering step and the non-white ink adhering step are performed by causing a recording head to scan the recording medium, the white ink adhering step and the non-white ink adhering step are performed on a region of the recording medium by a scan, and the white ink adhering step and the non-white ink adhering step are performed such that, in the region where the white ink and the non-white ink are adhered, the mass ratio (A/B) of an adhesion amount A of the white coloring material to an adhesion amount B of the non-white coloring material per unit area is 0.03 or more and 0.99 or less.

Disclosed is a recording method including attaching a reaction solution which forms a recording region Sby attaching a reaction solution which includes an aggregating agent which is able to aggregate components of a color ink composition to a target recording medium with an attachment amount of 100 nmol/inchto 1500 nmol/inchof the aggregating agent, and attaching a color ink composition which forms a recording region Sby attaching the color ink composition which includes a coloring material and a resin to the recording region Swithin 30 seconds of attaching the reaction solution.

Recording method

An ink jet recording method performs recording on a recording medium using a white ink composition, a non-white ink composition, and a treatment liquid containing an aggregating agent, the method including: a treatment liquid adhesion step of adhering the treatment liquid to the recording medium to form a treatment liquid layer; a non-white ink adhesion step of adhering the non-white ink composition to the recording medium by ejection thereof from an ink jet head to form a non-white ink layer; and a white ink adhesion step of adhering the white ink composition to the recording medium by ejection thereof from an ink jet head to form a white ink layer. The recording medium has a region in which the non-white ink layer, the white ink layer, and the treatment liquid layer are overlapped with each other, at least one of the ink compositions contains resin particles and a water-soluble resin, and the water-soluble resin has a glass transition temperature higher than that of a resin of the resin particles.

Ink jet recording method and ink set

The ink jet printing method includes applying an aqueous coloring ink composition onto a printing surface of a printing medium by being ejected from an ink jet head. The printing surface of the printing medium contains natural fibers and synthetic fibers.

Ink jet printing method

Provided is an ink jet recording method using an ink jet recording apparatus having an ink jet head, the method including: a colored ink adhesion step of discharging an aqueous colored ink composition containing a coloring material from an ink jet head to adhere to a recording medium; and a clear ink adhesion step of discharging an aqueous clear ink composition from an ink jet head to adhere to the recording medium, in which the aqueous clear ink composition contains wax particles, the ink jet recording apparatus has a circulation path for circulating the aqueous clear ink composition, and in the clear ink adhesion step, the aqueous clear ink composition circulated in the circulation path is discharged.

Ink jet recording method and ink jet recording apparatus

An ink set to be used for printing poorly absorbent or non-absorbent printing media includes an aqueous non-white ink composition containing a non-white pigment, an aqueous white ink composition containing a white pigment, and a treatment liquid containing a flocculant and an alkanolamine.

Ink set, printing method, and printing apparatus

An ink jet recording method includes a white ink adhesion step of causing a white ink containing a white pigment to adhere to a recording medium by an ink jet method; a non-white ink adhesion step of causing a non-white ink containing a non-white coloring material to adhere to the recording medium by the ink jet method; and a drying step of drying the white ink and the non-white ink adhering to the recording medium in the white ink adhesion step and the non-white ink adhesion step by a blowing type or radiation type drying unit, in which the white ink adhesion step and the non-white ink adhesion step are performed in a state where the recording medium is supported on a support member including a suction hole sucking the recording medium, and are performed by plural times of main scanning in which a recording head discharging the white ink and a recording head discharging the non-white ink discharge each ink while moving in a main scanning direction and plural times of sub-scanning in which the recording medium moves in a sub-scanning direction intersecting the main scanning direction.

Ink jet recording method

A recording method includes: causing a processing solution that contains a coagulant for coagulating constituents of an ink composition to adhere to a recording medium; causing an ink composition that includes a light ink composition and a dark ink composition that belong to a same color system and have mutually different color densities to adhere to the recording medium; and causing a clear ink composition that includes resin to adhere to the recording medium.

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Shiojiri, Japan

Ippei Okuda