# US 2022/0032618 A1 · Ink Jet Printing Method And Ink Jet Printing Apparatus

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- Number: US 2022/0032618 A1
- Document ID: US20220032618A1
- Status: Published application
- Kind: A1
- Application number: 17/389,528
- Filed: 2021-07-30
- Published: 2022-02-03
- Earliest claimed: 2020-07-31
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Tomoyuki USHIYAMA; Kei HIRUMA; Hiroaki KIDA; Shintaro ASAI; Masaru TERADA; Mitsunobu NAKATANI
- Web page: https://patentgrep.com/patent/US20220032618A1

## CPC

- B41J 2/05: produced by the application of heat
- C09D 11/36: based on non-aqueous solvents
- B41J 11/00216: {using infrared [IR] radiation or microwaves}
- C09D 11/322: Pigment inks
- C09D 11/40: Ink-sets specially adapted for multi-colour inkjet printing
- B41J 2/15: for serial printing
- B41J 2202/04: Heads using conductive ink
- B41M 7/009: {using thermal means, e.g. infrared radiation, heat}
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- 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)
- 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)

## Abstract

An ink jet printing method includes a metallic ink application step of ejecting a metallic ink composition containing a metallic pigment from an ink jet head to apply the metallic ink composition onto a printing medium, a heating step of heating the metallic ink composition applied on the printing medium with an infrared heater, and a coloring ink application step of ejecting a coloring ink composition containing a coloring material from an ink jet head to apply the coloring ink composition onto the metallic ink composition on the printing medium. Each of the metallic ink composition and the coloring ink composition is a water-based ink or a solvent-based ink.

## Claims

### Claim 1

An ink jet printing method comprising:
a metallic ink application step of ejecting a metallic ink composition containing a metallic pigment from an ink jet head to apply the metallic ink composition onto a printing medium;
a heating step of heating the metallic ink composition applied on the printing medium with an infrared heater; and
a coloring ink application step of ejecting a coloring ink composition containing a coloring material from an ink jet head to apply the coloring ink composition onto the metallic ink composition on the printing medium,
wherein each of the metallic ink composition and the coloring ink composition is a water-based ink or a solvent-based ink.

### Claim 2 (depends on 1)

The ink jet printing method according to claim 1, wherein
the metallic pigment is formed of flaky particles.

### Claim 3 (depends on 1)

The ink jet printing method according to claim 1, wherein
the metallic ink composition and the coloring ink composition are solvent-based inks, and each ink composition contains glycol ether in a proportion of 40.0% or more to a total mass of the ink composition.

### Claim 4 (depends on 3)

The ink jet printing method according to claim 3, wherein
the metallic ink composition and the coloring ink composition each contain a glycol ether with a flash point of 70.0° C. or less in a proportion of 40.0% or more to a total mass of the ink composition.

### Claim 5 (depends on 1)

The ink jet printing method according to claim 1, wherein
the metallic ink composition contains an acrylic resin.

### Claim 6 (depends on 1)

The ink jet printing method according to claim 1, wherein the metallic pigment is surface-treated with a fluorine compound or a silane compound.

### Claim 7 (depends on 1)

The ink jet printing method according to claim 1, wherein
a surface temperature of the printing medium in the heating step is 30.0° C. to 60.0° C.

### Claim 8 (depends on 1)

The ink jet printing method according to claim 1, wherein
the heating step includes heating with a conduction heater.

### Claim 9 (depends on 1)

The ink jet printing method according to claim 1, further comprising:
a post-application heating step performed after the coloring ink application step.

### Claim 10 (depends on 1)

The ink jet printing method according to claim 1, wherein
the coloring ink application step applies the coloring ink composition onto the metallic ink composition heated by the heating step.

### Claim 11 (depends on 1)

An ink jet printing apparatus for printing by the ink jet printing method as set forth in claim 1, the apparatus comprising:
an ink jet head configured to eject the metallic ink composition as set forth in claim 1;
an infrared heater; and
an ink jet head configured to eject the coloring ink composition as set forth in claim 1.