Recording method and ink jet recording apparatus

Patent metadata

Field	Value
Publication number	US-11932025-B2
Application number	US-202117560335-A
Country	US
Kind code	B2
Filing date	Dec 23, 2021
Priority date	Dec 25, 2020
Publication date	Mar 19, 2024
Grant date	Mar 19, 2024

Abstract

A recording method for performing recording on a recording medium includes a processing liquid attaching step of attaching a processing liquid including an aggregating agent to the recording medium, a white ink attaching step of attaching a white ink composition including a white coloring material to the recording medium, and a non-white ink attaching step of attaching a non-white ink composition including a non-white coloring material to the recording medium, in which attachment of the white ink composition and attachment of the non-white ink composition are performed by relative scanning of a recording head and the recording medium, and attachment of the white ink composition and attachment of the non-white ink composition are performed on a scanning region of the recording medium by a relative scanning.

First claim

What is claimed is:

1. A recording method for performing recording on a recording medium, the method comprising:
a processing liquid attaching step of attaching a processing liquid including an aggregating agent to the recording medium;
a white ink attaching step of attaching a white ink composition including a white coloring material to the recording medium; and
a non-white ink attaching step of attaching a non-white ink composition including a non-white coloring material to the recording medium,
wherein attachment of the white ink composition and attachment of the non-white ink composition are performed by relative scanning of a recording head and the recording medium, the recording head being mounted on a carriage and the relative scanning being conducted by moving the carriage in a main scanning direction and ejecting the white ink composition and the non-white ink composition from the recording head, the recording head including a nozzle row for ejecting the white ink composition and a nozzle row for ejecting the non-white ink composition, the nozzle row for ejecting the white ink composition and the nozzle row for ejecting the non-white ink composition having overlapping portions a direction orthogonal to the main scanning direction when protected in the main scanning direction; and
attachment of the white ink composition and attachment of the non-white ink composition are performed on the same scanning region of the recording medium by the same relative scanning.

2. The recording method according to claim 1 , wherein, in a recording region where the white ink composition and the non-white ink composition are attached, an attachment amount of the white ink composition is 100% by mass or less with respect to an attachment amount of 100% by mass of the non-white ink composition per unit region.

3. The recording method according to claim 1 , wherein the recording head is an ink jet head.

4. The recording method according to claim 1 , wherein each of the white ink composition and the non-white ink composition is attached to the scanning region by scanning two times or more.

5. The recording method according to claim 1 , wherein, in a recording region where the white ink composition and the non-white ink composition are attached, a maximum attachment amount of the white ink composition is 15 mg/inch 2 or less.

6. The recording method according to claim 1 , wherein, when the white ink composition is mixed with a 5% by mass aqueous solution of calcium acetate monohydrate, a viscosity of the white ink composition after mixing is 2 times or more a viscosity of the white ink composition before mixing, and when the non-white ink composition is mixed with a 5% by mass aqueous solution of calcium acetate monohydrate, a viscosity of the non-white ink composition after mixing is 2 times or more a viscosity of the non-white ink composition before mixing.

7. The recording method according to claim 1 , wherein
a content of the white coloring material is 5% to 20% by mass with respect to a total amount of the white ink composition, and
a content of the non-white coloring material is 0.5% to 10% by mass with respect to a total amount of the non-white ink composition.

8. The recording method according to claim 1 , wherein the white ink composition and the non-white ink composition are each a water-based ink.

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

10. The recording method according to claim 1 , wherein the recording medium is a non-white recording medium.

11. A recording apparatus for performing recording on a recording medium, the apparatus comprising:
a processing liquid attaching mechanism for attaching a processing liquid including an aggregating agent to the recording medium;
a white ink head for attaching a white ink composition including a white coloring material to the recording medium;
a non-white ink head for attaching a non-white ink composition including a non-white coloring material to the recording medium; and
a scanning mechanism for performing relative scanning between the white ink head and the recording medium and between the non-white ink head and the recording medium, wherein
recording is performed using the recording method according to claim 1 .

12. The recording method according to claim 1 , wherein a single ink layer including the white ink composition and the non-white ink composition is formed by the same relative scanning.

Assignees

• Seiko Epson Corp

Inventors

• Watanabe Tadashi
• Okuda Ippei

Classifications

• B41J2/2114 Primary

  Ejecting specialized liquids, e.g. transparent or processing liquids (B41J2/211 takes precedence) · CPC title

• B41J2/2117 Primary

  Ejecting white liquids · CPC title

• B41J2/01

  Ink jet · CPC title

• B41J2/2107

  characterised by the ink properties (supplying ink in a solid state B41J2/17593) · CPC title

• C09D11/322

  Pigment inks · CPC title