Recording method

Patent metadata

Field	Value
Publication number	US-10597548-B2
Application number	US-201816143683-A
Country	US
Kind code	B2
Filing date	Sep 27, 2018
Priority date	Sep 29, 2017
Publication date	Mar 24, 2020
Grant date	Mar 24, 2020

Abstract

A recording method according to the invention includes adhering a reaction liquid which reacts with and aggregates components of an ink composition to a recording medium; adhering a first ink composition to the recording medium; and adhering a second ink composition having reactivity with the reaction liquid lower than that of the first ink composition to the recording medium. Adhesion of the second ink composition to the recording medium is performed prior to adhesion of the first ink composition to the recording medium.

First claim

What is claimed is:

1. A recording method comprising:
adhering a reaction liquid which reacts with and aggregates components of an ink composition to a recording medium;
adhering a first ink composition to the recording medium; and
adhering a second ink composition having reactivity with the reaction liquid lower than that of the first ink composition to the recording medium,
wherein adhesion of the second ink composition to the recording medium is performed prior to adhesion of the first ink composition to the recording medium,
the first ink composition and the second ink composition are inks of a same color type,
a content of a colorant included in the first ink composition is greater than a content of a colorant included in the second ink composition,
the colorant included in the first ink composition and the colorant included in the second ink composition includes dispersed particles, and
the dispersed particles exhibit the reactivity with the reaction liquid.

2. The recording method according to claim 1 ,
wherein the adhering of the second ink composition to the recording medium is performed first in the adhering of the ink composition used for recording.

3. The recording method according to claim 1 ,
wherein the adhering of the first ink composition to the recording medium and the adhering of the second ink composition to the recording medium are performed by single scanning to the recording medium using an ink jet head having a length equal to or greater than a recording width in a width direction of the recording medium.

4. The recording method according to claim 3 ,
wherein the adhering of the first ink composition to the recording medium and the adhering of the second ink composition to the recording medium are performed by scanning a relative position between the recording medium and the ink jet head several times while ejecting the ink composition from the ink jet head, and by sub-scanning in which the relative position between the recording medium and the ink jet head is changed in a sub-scanning direction intersecting a scanning direction.

5. The recording method according to claim 4 ,
wherein the ink jet head ejecting the second ink composition is provided at an upstream side in a transport direction of the recording medium than the ink jet head that ejects the first ink composition.

6. The recording method according to claim 1 ,
wherein the content of an organic solvent that includes alkylene polyols having a normal boiling point of 280° C. or higher with respect to a total mass of the ink composition is 1 mass % or less in each of the first ink composition and the second ink composition.

7. The recording method according to claim 1 ,
wherein a surface temperature of the recording medium upon adhering the second ink composition to the recording medium and a surface temperature of the recording medium upon adhering the first ink composition to the recording medium are each 45° C. or less.

8. The recording method according to claim 1 ,
wherein a coagulant contained in the reaction liquid includes at least one of a polyvalent metal salt, a cationic polymer, and organic acid.

9. The recording method according to claim 1 ,
wherein the first ink composition and the second ink composition each include resin microparticles, and the content of the resin microparticles of the second ink composition is greater than that of the first ink composition.

10. The recording method according to claim 9 ,
wherein a viscosity when the resin microparticles contained in the first ink composition and the resin microparticles contained in the second ink composition are respectively mixed with a 0.3 M aqueous solution of magnesium sulfate increases less than 5 times.

11. The recording method according to claim 9 ,
wherein the content of the resin microparticles contained in the second ink composition is 4 mass % or more.

12. The recording method according to claim 1 ,
wherein a recording region in which a ratio of an amount of the reaction liquid adhered to a total deposited amount of the ink composition containing the first ink composition and the second ink composition per unit area is 5 mass % or more and 20 mass % or less is recorded.

13. The recording method according to claim 1 ,
wherein the colorant included in the first ink composition and the colorant included in the second ink composition are at least one of a surface-treated pigment, a resin-dispersed pigment, and a surfactant-dispersed pigment.

14. The recording method according to claim 1 ,
wherein a difference between hue angles ∠H° of the respective recorded images recorded on the recording medium using the first and second ink compositions is less than 30°.

15. The recording method according to claim 1 ,
wherein the first and second ink compositions are one selected from the group consisting of a black ink, a yellow ink, cyan ink, and a magenta ink, and the second ink composition has a feature different from the first ink composition other than the content of the colorant.

16. The recording method according to claim 1 ,
wherein the content of the colorant contained in the first ink composition and the content of the colorant contained in the second ink composition are each in the range of 0.1 to 15 mass % of the ink composition.

17. The recording method according to claim 1 ,
wherein the first and second ink composition each include resin microparticles, and the resin microparticles are configured to increase in viscosity less than 1.5 times when mixed with a 0.3 M aqueous solution of magnesium sulfate.

Assignees

• Seiko Epson Corp

Inventors

• Mizutani Akira
• Okuda Ippei

Classifications

• D06P1/525

  Polymers of unsaturated carboxylic acids or functional derivatives thereof · CPC title

• C09D11/30

  Inkjet printing inks · CPC title

• C09D11/36

  based on non-aqueous solvents · CPC title

• C09D11/107

  from unsaturated acids or derivatives thereof · CPC title

• D06P5/30

  Ink jet printing · CPC title