# US 2023/0057093 A1 · Ink jet recording ink and image recording method

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- Number: US 2023/0057093 A1
- Document ID: US20230057093A1
- Status: Published application
- Kind: A1
- Application number: 17/950,395
- Filed: 2022-09-22
- Published: 2023-02-23
- Earliest claimed: 2020-03-27
- Assignees: FUJIFILM Corporation
- Applicants: FUJIFILM Corporation
- Inventors: Fumiya SHIRAKI
- Web page: https://patentgrep.com/patent/US20230057093A1

## CPC

- C09D 11/322: Pigment inks
- C09D 11/106: containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09D 11/36: based on non-aqueous solvents
- C09D 11/38: characterised by non-macromolecular additives other than solvents, pigments or dyes
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)

## Abstract

Provided are an ink jet recording ink including an organic solvent which is at least one selected from the group consisting of a compound represented by Formula 1 and a compound represented by Formula 2 and has a Clog P value of 1.0 to 3.5, resin particles which contain a resin having 1% by mass to 20% by mass of a structural unit represented by Formula 3 with respect to a total mass of the resin, a silicone-based surfactant, and water, and an image recording method. The description in Formula 1, Formula 2, and Formula 3 has been made in the specification.

## Claims

### Claim 1

An ink jet recording ink comprising:
a pigment;
a dispersant;
an organic solvent which is at least one selected from the group consisting of a compound represented by Formula 1 and a compound represented by Formula 2 and has a Clog P value of 1.0 to 3.5;
resin particles which contain a resin having 1% by mass to 20% by mass of a structural unit represented by Formula 3 with respect to a total mass of the resin;
a silicone-based surfactant; and
water,
wherein, in Formula 1 or 2, R1s each independently represent a hydrogen atom or a methyl group, R2s each independently represent a linear or branched hydrocarbon group having 4 to 9 carbon atoms, or an aryl group having 6 to 10 carbon atoms, and n represents an integer of 1 to 3,
in Formula 3, R3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, X1 represents a divalent linking group, Y1 represents an anionic group, and an atom included in X1 or Y1 and farthest from a main chain is separated from the main chain by a distance of 4 atoms to 27 atoms.

### Claim 2 (depends on 1)

The ink jet recording ink according to claim 1,
having a dynamic surface tension at 10 milliseconds of 35 mN/m or less.

### Claim 3 (depends on 1)

The ink jet recording ink according to claim 1,
wherein a content of the organic solvent is 2.5% by mass or greater with respect to a total mass of the ink.

### Claim 4 (depends on 1)

The ink jet recording ink according to claim 1,
wherein a content of the silicone-based surfactant is in a range of 0.03% by mass to 0.8% by mass with respect to a total mass of the ink.

### Claim 5 (depends on 1)

The ink jet recording ink according to claim 1,
wherein the resin has 5% by mass to 90% by mass of a structural unit derived from an ethylenically unsaturated compound having an aromatic ring structure or an alicyclic structure with respect to the total mass of the resin.

### Claim 6 (depends on 1)

An image recording method comprising:
applying the ink jet recording ink according to claim 1 onto a recording medium using an ink jet recording method, to record an image.