# US 12,214,583 B2 · Recording method and recording device

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- Number: US 12,214,583 B2
- Document ID: US12214583B2
- Status: Granted
- Kind: B2
- Application number: 17/865,692
- Filed: 2022-07-15
- Published: 2023-01-26
- Granted: 2025-02-04
- Earliest claimed: 2021-07-16
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Keigo Ando
- Web page: https://patentgrep.com/patent/US12214583B2

## CPC

- B41J 11/0022: {using convection means, e.g. by using a fan for blowing or sucking air}
- B41J 2/2117: {Ejecting white liquids}
- B41J 2/2132: {Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding (methods for local corrections by dot omission, image edge enhancement, or multi-pass mask selection G06K15/102; colour conversion H04N1/40)}
- C09D 11/322: Pigment inks
- B41J 11/002: {Curing or drying the ink on the copy materials, e.g. by heating or irradiating}
- B41M 7/009: {using thermal means, e.g. infrared radiation, heat}
- C09D 11/40: Ink-sets specially adapted for multi-colour inkjet printing
- 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

A recording method includes: a white ink attachment step of ejecting a white ink composition containing a white coloring material from a white ink jet head and attaching the white ink composition to a recording medium; a non-white ink attachment step of ejecting a non-white ink composition containing a non-white coloring material from a non-white ink jet head and attaching the non-white ink composition to the recording medium; and a primary drying step of heating the white ink composition and the non-white ink composition attached to the recording medium by a drying mechanism. In the white ink attachment step and the non-white ink attachment step, a layer containing the white ink composition and the non-white ink composition is formed by performing main scanning multiple times, in which the ink compositions are ejected and attached to the recording medium, and by attaching the white ink composition and the non-white ink composition to the same scanning region in the recording medium by the same main scanning, while moving a position of an ink jet head relative to the recording medium.

## Claims

### Claim 1

A recording method comprising:
a white ink attachment step of ejecting a white ink composition containing a white coloring material from a white ink jet head, and attaching the white ink composition to a recording medium;
a non-white ink attachment step of ejecting a non-white ink composition containing a non-white coloring material from a non-white ink jet head, and attaching the non-white ink composition to the recording medium; and
a primary drying step of heating the white ink composition and the non-white ink composition attached to the recording medium by a drying mechanism,
wherein in the white ink attachment step and the non-white ink attachment step, a layer containing the white ink composition and the non-white ink composition is formed by performing main scanning multiple times, in which the ink compositions are ejected and attached to the recording medium, and by attaching the white ink composition and the non-white ink composition to a same scanning region in the recording medium such that the white ink composition and the non-white ink composition are mixed in the layer by a same main scanning, while moving a position of an ink jet head relative to the recording medium, and
wherein a ratio A of an attachment amount of the white ink composition to 100% by mass of an attachment amount of the non-white ink composition is 80% by mass or less, in a region having a largest attachment amount of the non-white ink composition, among regions in the recording medium where the white ink composition and the non-white ink composition are attached.

### Claim 2 (depends on 1)

The recording method according to claim 1, wherein
in the primary drying step, heating or air blowing is performed.

### Claim 3 (depends on 1)

The recording method according to claim 1, wherein
in the primary drying step, air blowing is performed, and
an air velocity in the air blowing is 0.5 to 5 m/s.

### Claim 4 (depends on 1)

The recording method according to claim 1, wherein
a surface temperature of the recording medium in the primary drying step is 35° C. to 60° C.

### Claim 5 (depends on 1)

The recording method according to claim 1, wherein
the main scanning is performed multiple times on a same region in the recording medium.

### Claim 6 (depends on 1)

The recording method according to claim 1, wherein
the ratio A of the attachment amount of the white ink composition to 100% by mass of the attachment amount of the non-white ink composition is 75% by mass or less, in the region having the largest attachment amount of the non-white ink composition, among regions in the recording medium where the white ink composition and the non-white ink composition are attached.

### Claim 7 (depends on 1)

The recording method according to claim 1, wherein
a largest attachment amount of the white ink composition in regions in the recording medium where the white ink composition and the non-white ink composition are attached is 10 mg/inch2 or less.

### Claim 8 (depends on 1)

The recording method according to claim 1, wherein
a content of the white coloring material is 8% by mass or more, based on a total amount of the white ink composition.

### Claim 9 (depends on 1)

The recording method according to claim 1, wherein
the white ink composition contains organic solvents, and
a content of an organic solvent having a standard boiling point of lower than 200° C. among the organic solvents is 50% by mass or more, based on a total amount of the organic solvents.

### Claim 10 (depends on 1)

The recording method according to claim 1, wherein
the white ink composition contains both-end-type alkanediol having 3 to 5 carbon atoms as an organic solvent.

### Claim 11 (depends on 1)

The recording method according to claim 1, wherein
the white ink composition contains an organic solvent, and
a maximum value of a standard boiling point of the organic solvent is 250° C. or lower.

### Claim 12 (depends on 1)

The recording method according to claim 1, wherein
the white ink composition contains organic solvents, and
the organic solvents include an organic solvent having a standard boiling point of lower than 200° C. and an organic solvent having a standard boiling point of 200° C. or higher.

### Claim 13 (depends on 1)

The recording method according to claim 1, wherein
each of the white ink composition and the non-white ink composition is an aqueous ink composition or each of the white ink composition and the non-white ink composition is a solvent-based ink composition.

### Claim 14 (depends on 13)

The recording method according to claim 13, wherein
each of the white ink composition and the non-white ink composition is the aqueous ink composition, and
a content of an organic solvent in each of the white ink composition and the non-white ink composition is 30% by mass or less.

### Claim 15 (depends on 1)

The recording method according to claim 1, wherein
the recording medium is a low-absorbent recording medium or a non-absorbent recording medium.

### Claim 16 (depends on 1)

A recording device that performs recording by the recording method according to claim 1, comprising:
a white ink jet head configured to eject a white ink composition containing a white coloring material, and attach the white ink composition to a recording medium;
a non-white ink jet head configured to eject a non-white ink composition containing a non-white coloring material, and attach the non-white ink composition to the recording medium;
a drying mechanism configured to dry the white ink composition and the non-white ink composition attached to the recording medium; and
a control section configured to perform control of recording by using the white ink jet head and the non-white ink jet head.