Granted Patent B2

US 12,221,548 · App. 17/950,395 · Granted Feb 11, 2025

Inventor: Fumiya Shiraki (Kanagawa, JP)

Assignee: FUJIFILM Corporation

C09D11/322C09D11/36C09D11/38

Abstract

Claims (23)

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, R 1 s each independently represent a hydrogen atom or a methyl group, R 2 s 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, R 3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, X 1 represents a divalent linking group, Y 1 represents an anionic group, and an atom included in X 1 or Y 1 and farthest from a main chain is separated from the main chain by a distance of 4 atoms to 27 atoms.

2. The ink jet recording ink according to claim 1 ,

having a dynamic surface tension at 10 milliseconds of 35 mN/m or less.

3. 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.

4. 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.

5. 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.

6. 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.

7. The ink jet recording ink according to claim 1 ,

wherein the dispersant is a polymer having a crosslinked structure.

8. The ink jet recording ink according to claim 1 ,

wherein in Formula 3, an atom included in X 1 or Y 1 and farthest from a main chain is separated from the main chain by a distance of 12 atoms to 27 atoms.

Assignments (1)

Priority Claims (1)

Continuity (2)

References Cited (29)