Konica Minolta, Inc.

Haruka Moriyama

Takayuki Toeda

Hirotaka Tagori

Masayuki Ushiku

Provided is an ink-jet recording liquid set including a pretreatment liquid for ink-jet recording and an ink-jet ink, wherein the pretreatment liquid for ink-jet recording includes: composite resin particles in which a polyolefin resin is contained in a polyurethane resin; a coagulant; and water, and the ink-jet ink contains: a pigment; water; and 3-methoxy-1-butanol or 3-methoxy-3-methy-1-butanol.

Ink-jet recording liquid set, preparation method of pretreatment liquid for ink-jet recording, printed matter, and ink-jet recording method

Provides is an inkjet recording liquid set including at least an inkjet ink and a pretreatment liquid, wherein the inkjet ink contains at least a pigment, an organic solvent, water and a silicone surfactant; the pretreatment liquid contains at least water-insoluble resin particles and a pigment coagulant; and the silicone surfactant has a structure represented by the following Formula (1), in Formula (1), R represents a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms; X is an alkylene group having 2 to 6 carbon atoms and may have a branched structure; EO represents an ethylene oxide group, PO represents a propylene oxide group, and an order of EO and PO is random; m and n represent a number of repeating unit structures, m is an integer of 2 to 50, and n is an integer of 0 to 20.

Inkjet recording liquid set, printed matter, and inkjet recording method

This inkjet image formation method has: a precoat liquid application step in which a precoat liquid is applied to a film substrate, the precoat liquid including a curing agent, a resin having a function group that reacts with the curing agent, and water; a precoat liquid drying step in which the precoat liquid applied to the film substrate is dried to form a precoat layer; an ink application step in which an ink is applied to the precoat layer by an inkjet method, the ink containing at least a coloring material, an organic solvent, and water; and an ink drying step in which the ink applied to the precoat layer is dried to form an image. The drying temperature T1, which is the highest temperature during the precoat liquid drying step, and the drying temperature T2, which is the highest temperature during the ink drying step, satisfy T2&#x3e;T1.

Inkjet image formation method

An object of the present invention is to provide an ink jet image forming method capable of obtaining a high grade image quality in which blur is suppressed even in the case of performing printing with respect to a low water-absorption recording medium. The present invention relates to an ink jet image forming method. The ink jet image forming method includes: an image forming step of ejecting and impacting an ink jet recording ink containing at least a pigment, an organic solvent, and water onto a region of low water-absorption recording medium, in which a resin and a pigment aggregating agent are attached to a surface, from a nozzle of an ink jet head, wherein in the image forming step, relative humidity of a space between the nozzle and the recording medium is greater than or equal to 50% and less than or equal to 95%.

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Musashino, Japan

Haruka Moriyama