Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Disclosed is a recording method including attaching a reaction solution which forms a recording region S1 by 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/inch2 to 1500 nmol/inch2 of the aggregating agent, and attaching a color ink composition which forms a recording region S2 by attaching the color ink composition which includes a coloring material and a resin to the recording region S1 within 30 seconds of attaching the reaction solution.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: An ink set includes a treatment liquid containing an aggregating agent and an ink composition, and the ink composition is a water-based ink containing a pigment dispersed by a pigment dispersant or a self-dispersible pigment; a water-dispersible resin; and a maleic acid-based resin which is a water-soluble resin.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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 mediu

Abstract: An ink jet printing method includes an application step of ejecting a coloring ink composition functioning to color a printing medium through an ejection opening of a first ink jet head to apply the coloring ink composition onto a printing medium, and an application step of ejecting a non-coloring composition different from the coloring ink composition through an ejection opening of a second ink jet head to apply the non-coloring composition onto the printing medium. The coloring ink composition is circulated through a circulation path connected to the first ink jet head after being fed into the first ink jet head and before being ejected through the ejection opening of the first ink jet head. The non-coloring composition is not circulated through a circulation path after being fed into the second ink jet head and before being ejected through the ejection opening of the second ink jet head.

Abstract: An ink jet printing method includes scanning a printing medium in a scanning direction a plurality of times with an ink jet head from which inks and a treatment liquid acting to flocculate constituents of the inks are ejected. The ink jet head includes first ink nozzles filled with a first ink and arranged in a sub-scanning direction, second ink nozzles filled with a second ink having a different composition from the first ink and arranged in the sub-scanning direction, and treatment liquid nozzles filled with the treatment liquid and arranged in the sub-scanning direction. At least some of the treatment liquid nozzles are coincident in the sub-scanning direction with the first and second ink nozzles. The first ink nozzles are closest to the treatment liquid nozzles in the scanning direction, and the first ink exhibits a viscosity increase by a factor of 6.0 or less.

Abstract: 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.