# US 12,109,830 B2 · Ink jet ink composition and recording method

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- Number: US 12,109,830 B2
- Document ID: US12109830B2
- Status: Granted
- Kind: B2
- Application number: 17/856,249
- Filed: 2022-07-01
- Published: 2023-01-05
- Granted: 2024-10-08
- Earliest claimed: 2021-07-05
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Keigo Ando
- Web page: https://patentgrep.com/patent/US12109830B2

## CPC

- B41M 5/0023: {Digital printing methods characterised by the inks used (inks per se C09D11/00)}
- C09D 11/38: characterised by non-macromolecular additives other than solvents, pigments or dyes
- B41J 11/0021: {using irradiation}
- C09D 11/033: characterised by the solvent
- C09D 11/107: from unsaturated acids or derivatives thereof
- C09D 11/322: Pigment inks
- C09D 11/36: based on non-aqueous solvents
- B41M 7/009: {using thermal means, e.g. infrared radiation, heat}
- B41M: PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING, (correction of typographical errors B41J; processes for applying transfer pictures or the like B44C1/16; fluid media for correction of typographical errors by coating C09D10/00; printing textiles D06P)
- 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

## Abstract

An ink jet ink composition of the present disclosure is a water-based ink which includes a colorant; a surfactant; a fixing resin; and an organic solvent, the surfactant includes a silicone-based surfactant having an HLB value of 10.5 or less, the fixing resin includes an acrylic-based resin having a glass transition temperature of 35° C. to 95° C., and the organic solvent includes a 1,2-alkanediol having 4 carbon atoms or less and an alkanediol having diols at both terminals and 3 to 5 carbon atoms.

## Claims

### Claim 1

An ink jet ink composition which is a water-based ink, the ink composition comprising:
a colorant;
a surfactant;
a fixing resin; and
an organic solvent,
wherein the surfactant includes a silicone-based surfactant having an HLB value of 10.5 or less,
the fixing resin includes an acrylic-based resin having a glass transition temperature of 35° C. to 95° C.,
the organic solvent includes a 1,2-alkanediol having 4 carbon atoms or less and an alkanediol having diols at both terminals and 3 to 5 carbon atoms, and
a mass ratio (B/A) of a content B of the alkanediol having diols at both terminals and 3 to 5 carbon atoms with respect to a total mass of the ink composition to a content A of the 1,2-alkanediol having 4 carbon atoms or less with respect to the total mass of the ink composition is 0.1 to 1.5.

### Claim 2 (depends on 1)

The ink jet ink composition according to claim 1,
wherein a total content of the organic solvent with respect to a total mass of the ink composition is 30 percent by mass or less.

### Claim 3 (depends on 1)

The ink jet ink composition according to claim 1,
wherein the 1,2-alkanediol having 4 carbon atoms or less includes one of propylene glycol and 1,2-butanediol.

### Claim 4 (depends on 1)

The ink jet ink composition according to claim 1,
wherein the silicone-based surfactant has an HLB value of 2 to 10.5.

### Claim 5 (depends on 1)

The ink jet ink composition according to claim 1,
wherein the alkanediol having diols at both terminals and 3 to 5 carbon atoms includes one of 1,3-propanediol, 1,4-butanediol, and 1,5-pentanediol.

### Claim 6 (depends on 1)

The ink jet ink composition according to claim 1,
wherein the acrylic-based resin has a glass transition temperature of 40° C. to 90° C.

### Claim 7 (depends on 1)

The ink jet ink composition according to claim 1,
wherein the ink jet ink composition is used for recording on a low-absorbing recording medium or a non-absorbing recording medium.

### Claim 8 (depends on 1)

The ink jet ink composition according to claim 1,
wherein the acrylic-based resin includes a styrene-acrylic resin.

### Claim 9

An ink jet ink composition which is a water-based ink, the ink composition comprising:
a colorant;
a surfactant;
a fixing resin; and
an organic solvent,
wherein the surfactant includes a silicone-based surfactant having an HLB value of 10.5 or less,
the fixing resin includes an acrylic-based resin having a glass transition temperature of 35° C. to 95° C.,
the organic solvent includes a 1,2-alkanediol having 4 carbon atoms or less and an alkanediol having diols at both terminals and 3 to 5 carbon atoms, and
the organic solvent contained in the ink composition has a weight average standard boiling point of 195° C. to 205° C.

### Claim 10

An ink jet ink composition which is a water-based ink, the ink composition comprising:
a colorant;
a surfactant;
a fixing resin; and
an organic solvent,
wherein the surfactant includes a silicone-based surfactant having an HLB value of 10.5 or less,
the fixing resin includes an acrylic-based resin having a glass transition temperature of 35° C. to 95° C.,
the organic solvent includes a 1,2-alkanediol having 4 carbon atoms or less and an alkanediol having diols at both terminals and 3 to 5 carbon atoms, and
the organic solvent is configured not to include a polyol having a standard boiling point of more than 280° C. at a content of more than 1 percent by mass with respect to a total mass of the ink composition.

### Claim 11

An ink jet ink composition which is a water-based ink, the ink composition comprising:
a colorant;
a surfactant;
a fixing resin; and
an organic solvent,
wherein the surfactant includes a silicone-based surfactant having an HLB value of 10.5 or less,
the fixing resin includes an acrylic-based resin having a glass transition temperature of 35° C. to 95° C.,
the organic solvent includes a 1,2-alkanediol having 4 carbon atoms or less and an alkanediol having diols at both terminals and 3 to 5 carbon atoms, and
the recording method performs recording by main scannings, and
the number of the main scannings preformed on the same scanning region is 10 times or less.

### Claim 12 (depends on 11)

The recording method according to claim 11, wherein the recording medium is a low-absorbing recording medium or a non-absorbing recording medium.

### Claim 13

A recording method comprising:
ejecting an ink jet ink composition by an ink jet method so as to be adhered to a recording medium; and
a primary heating step of heating the ink jet ink composition adhered to the recording medium,
wherein the recording medium in the primary heating step has a surface temperature of 40° C. or more, and
the ink jet ink composition which is a water-based ink includes:
a colorant;
a surfactant;
a fixing resin; and
an organic solvent,
wherein the surfactant includes a silicone-based surfactant having an HLB value of 10.5 or less,
the fixing resin includes an acrylic-based resin having a glass transition temperature of 35° C. to 95° C., and
the organic solvent includes a 1,2-alkanediol having 4 carbon atoms or less and an alkanediol having diols at both terminals and 3 to 5 carbon atoms.

### Claim 14

A recording method comprising:
electing an ink let ink composition by an ink let method so as to be adhered to a recording medium; and
a post-heating step of heating the recording medium to which the ink jet ink composition is adhered,
wherein the ink jet ink composition which is a water-based ink includes:
a colorant;
a surfactant;
a fixing resin; and
an organic solvent,
wherein the surfactant includes a silicone-based surfactant having an HLB value of 10.5 or less,
the fixing, resin includes an acrylic-based resin having a glass transition temperature of 35° C. to 95° C., and
the organic solvent includes a 1,2-alkanediol having 4 carbon atoms or less and an alkanediol having diols at both terminals and 3 to 5 carbon atoms.