Konica Minolta, Inc.

Takayuki Toeda

Masaki Nakamura

Go Yamaguchi

Haruka Moriyama

Yusuke Takaku

Kouki Kawashima

Masashi Miyano

Hirotaka Tagori

Kana Yamada

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

The present invention relates to: an active ray-curable inkjet ink which has high gloss and is capable of forming an image that is suppressed in gloss difference between itself and a base; and an image forming method which uses this active ray-curable inkjet ink. An active ray-curable inkjet ink according to the present invention contains a photopolymerizable compound, a photoinitiator and a crystalline gelling agent, and is capable of undergoing a sol-gel phase transition. This active ray-curable inkjet ink is characterized by additionally containing a fluorescent bleaching agent.

Active ray-curable inkjet ink and image forming method

An actinic radiation-curable inkjet ink containing a photocurable compound, a photopolymerization initiator, a fluorescent brightener, and a phenol-based antioxidant, in which the fluorescent brightener is a compound represented by general formula (1), and the photocurable compound contains a (meth)acrylate having two or more (meth)acryloyl groups in an amount of 80 mass % or more with respect to a total mass of the photocurable compound. 

Actinic radiation-curable inkjet ink and image forming method

A photocurable composition containing a photopolymerizable compound and a photoinitiator, wherein the photopolymerizable compound is a radically polymerizable monomer and the photoinitiator is a photoradical initiator. The photocurable composition is characterized by additionally contains a metal chelate compound, wherein the center metal element in the metal chelate compound is selected from metal elements belonging to Group 2, Group 4, Group 8 and Group 13 and the metal chelate compound is contained in an amount of 0.1 to 5% by mass inclusive relative to the whole mass of the photocurable composition. Thus, it becomes possible to provide: a photocurable composition which has sustained adhesiveness and does not undergo shrinking upon curing; and a photocurable inkjet ink.

Photocurable composition and photocurable inkjet ink containing same, recording method using photocurable composition, and recording method using photocurable inkjet ink

Provided is an ultraviolet curable inkjet ink and an inkjet image formation method that uses said inkjet ink. The inkjet ink can be ejected from an inkjet head without being diluted by a solvent, has high photo curing sensitivity and produces high quality images with excellent weather resistance (smear resistance). The inkjet ink is characterized by a polymerizable compound which contains a maleimide compound having a chiral group and a compound selected from a vinyl ether compound and a N-vinyl compound.

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Tokyo, Japan

Takayuki Toeda