Fujifilm Corporation

Naoka Hamada

Shota Suzuki

Noriaki Sato

Masao Ikoshi

Ryoichi Nakano

Atsushi Kaeriyama

An ink set including an ink containing water, a pigment, a pigment dispersion polymer A, and a water-soluble polymer B, and a treatment liquid containing water and at least one selected from the group consisting of a polyvalent metal salt, an acidic compound, and a cationic polymer, in which the pigment dispersion polymer A contains a specific acid group and an aromatic ring, and the water-soluble polymer B contains a specific acid group and a constitutional unit represented by General Formula (1), and in the ink, a mass ratio of a content concentration of the water-soluble polymer B to a content concentration of the pigment dispersion polymer A in a liberated polymer is 1.6 or more, and an image recording method. Rrepresents a hydrogen atom or a monovalent substituent, Yrepresents a monovalent substituent, Arepresents —O—, and Lis a divalent linking group.

Ink set and image recording method

A colored resin particle dispersion containing colored resin particles and water, in which the colored resin particles contain an oil-soluble dye and a polymer P containing a structural unit represented by Formula (1), a structural unit represented by Formula (2), and a hydrophilic group, an ink, an ink set, and an inkjet printing method. Lrepresents a chain hydrocarbon group having 4 to 10 carbon atoms, two *1's each represent a bonding position, Lrepresents a chain hydrocarbon group having 2 to 25 carbon atoms which may contain an oxygen atom or the like, or a polymer chain having a number-average molecular weight of 500 or greater, Yand Yeach independently represent —O—, —S—, or, —NRz-, Rz represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, and two *2's each represent a bonding position.

Colored resin particle dispersion, ink, ink set, and inkjet printing method

Provided are a colored resin particle dispersion containing colored resin particles and water, in which the colored resin particles contain a water-insoluble chain polymer and at least one dye selected from the group consisting of an oil-soluble dye, a disperse dye and a vat dye, and the water-insoluble chain polymer has a structure represented by the following General Formula (G), a cyclic structure, and a hydrophilic group, an ink manufactured using the colored resin particle dispersion, an ink set having the ink, an inkjet printing method using the ink, and a method of manufacturing the colored resin particle dispersion. In the General Formula (G), Rg represents a hydrogen atom or a substituent, Lg represents —O—, —S—, or —NRz-, Rz represents a hydrogen atom or a substituent, and * represents a bonding position.

Growing community of inventors

Kanagawa, Japan

Naoka Hamada