# US 10,864,748 B2 · Image recording method, ink, and liquid composition

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- Number: US 10,864,748 B2
- Document ID: US10864748B2
- Status: Granted
- Kind: B2
- Application number: 15/964,304
- Filed: 2018-04-27
- Published: 2019-05-02
- Granted: 2020-12-15
- Earliest claimed: 2015-01-08
- Assignees: Canon Kabushiki Kaisha
- Applicants: Canon Kabushiki Kaisha
- Inventors: Takashi Imai; Mamiko Kaji
- Web page: https://patentgrep.com/patent/US10864748B2

## CPC

- C09D 11/54: Inks based on two liquids, one liquid being the ink, the other liquid being a reaction solution, a fixer or a treatment solution for the ink
- B41J 2/2107: {characterised by the ink properties (supplying ink in a solid state B41J2/17593)}
- B41J 2/2114: {Ejecting specialized liquids, e.g. transparent or processing liquids (B41J2/211 takes precedence)}
- B41J 2/2117: {Ejecting white liquids}
- C08K 5/053: Polyhydroxylic alcohols
- C09D 11/38: characterised by non-macromolecular additives other than solvents, pigments or dyes
- C09D 11/40: Ink-sets specially adapted for multi-colour inkjet printing
- C09D 133/08: Homopolymers or copolymers of acrylic acid esters
- 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)
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

An image recording method including the steps of applying an ink containing a coloring material and anionic resin particles to a recording medium, and applying a liquid composition to the recording medium so as to at least partly overlap with an area where the ink is applied, the liquid composition destabilizing a dispersion state of the coloring material or of the anionic resin particles in the ink. The ink contains a trihydric or higher polyhydric alcohol compound having a group formed by substituting a hydrogen atom of a hydroxyl group by a structure represented by —Rn—H, where R is an alkyleneoxy group including an ethyleneoxy group, and the number of Rs per molecule is 40 or more and 120 or less when the polyhydric alcohol is a trihydric alcohol and is 12 or more and 400 or less when the polyhydric alcohol is a tetrahydric or higher polyhydric alcohol.

## Claims

### Claim 1

An ink comprising:
(a) a coloring material;
(b) anionic resin particles; and
(c) a pentahydric or higher and a dodecahydric or lower polyhydric alcohol compound having a group formed by substituting a hydrogen atom of a hydroxyl group by a structure represented by —Rn—H, where R is an alkyleneoxy group including an ethyleneoxy group, and the number of “R”s per molecule is 40 or more and 400 or less.

### Claim 2 (depends on 1)

The ink according to claim 1, wherein the R is the alkyleneoxy group including the ethyleneoxy group and a propyreneoxy group.

### Claim 3 (depends on 1)

The ink according to claim 1, wherein, in the structure represented by —Rn—H, the n is 2.0 to 66.7.

### Claim 4 (depends on 1)

The ink according to claim 1, wherein a content of the anionic resin particles is 1.0% by mass or more based on the total mass of the ink.

### Claim 5 (depends on 1)

The ink according to claim 1, wherein a content of the pentahydric or higher and the dodecahydric or lower polyhydric alcohol compound is 0.6% by mass or more based on the total mass of the ink.

### Claim 6 (depends on 5)

The ink according to claim 5, wherein the content of the pentahydric or higher and the dodecahydric or lower polyhydric alcohol compound is 0.6% by mass or more and 10.0% by mass or less based on the total mass of the ink.

### Claim 7 (depends on 1)

The ink according to claim 1, wherein a mass ratio of the content of the anionic resin particles relative to the content of the pentahydric or higher and the dodecahydric or lower polyhydric alcohol compound based on the total mass of the ink is 0.5 or more and 25.0 or less.

### Claim 8 (depends on 1)

The ink according to claim 1, wherein the anionic resin particles comprise a polymer of a monomer composition comprising at least one monomer selected from the group consisting of ester compounds of α,β-unsaturated carboxylic acids and α,β-ethylenically unsaturated compounds having an aryl group.

### Claim 9 (depends on 1)

The ink according to claim 1, wherein the coloring material is a pigment.

### Claim 10 (depends on 1)

The ink according to claim 1, further comprising water, wherein a content of the water is 50.0% by mass or more and 95.0% by mass or less based on the total mass of the ink.

### Claim 11 (depends on 1)

The ink according to claim 1, wherein the pentahydric or higher and the dodecahydric or lower polyhydric alcohol compound is represented by the following general formula A, B, or C:
wherein, in general formula A, m is 3 to 4;
general formula B:
wherein, in general formula C, m is 3 to 10.

### Claim 12 (depends on 11)

The ink according to claim 11, wherein, in general formula C, m is 4 to 10.