Reaction liquid and recording method

Patent metadata

Field	Value
Publication number	US-10696860-B2
Application number	US-201816142038-A
Country	US
Kind code	B2
Filing date	Sep 26, 2018
Priority date	Sep 28, 2017
Publication date	Jun 30, 2020
Grant date	Jun 30, 2020

Abstract

There is provided a reaction liquid to be attached to a recording medium to which an ink composition is to be attached, the reaction liquid including an aggregating agent which aggregates components of the ink composition, water, and a surfactant, in which a content of the surfactant is 2% by mass or more and 10% by mass or less with respect to a total mass of the reaction liquid.

First claim

What is claimed is:

1. A set comprising a reaction liquid and an ink composition that are each to be attached to a recording medium,
wherein:
the ink composition includes a first nonionic surfactant;
the reaction liquid includes an aggregating agent which aggregates components of the ink composition, an organic solvent having a standard boiling point that lies in the range of 180° C. to 280° C., water, and a second nonionic surfactant,
a content of the organic solvent is 10 to 70% by mass with respect to a total mass of the reaction liquid,
a content of the second nonionic surfactant is 2% by mass or more and 10% by mass or less with respect to the total mass of the reaction liquid, and
a content S1 of the second nonionic surfactant included in the reaction liquid and a content S2 of the first nonionic surfactant contained in the ink composition have a relationship of S1/S2=1.5 to 4 on a mass basis.

2. The set according to claim 1 , further comprising:
one kind or more selected from a silicone-based surfactant, an acetylene glycol-based surfactant, and a fluorine-based surfactant as the second nonionic surfactant.

3. The set according to claim 1 ,
wherein the content of the second nonionic surfactant is 3% by mass or more and 7% by mass or less.

4. The set according to claim 1 ,
wherein the reaction liquid includes one kind selected from a polyvalent metal salt, a cationic polymer, and an organic acid as the aggregating agent.

5. The set according to claim 1 ,
wherein the content of the organic solvent is 20 to 70% by mass with respect to a total mass of the reaction liquid.

6. The set according to claim 1 ,
wherein the reaction liquid and the ink composition are attached to the recording medium using an ink jet method.

7. The set according to claim 1 ,
wherein the ink composition includes a pigment and fine resin particles.

8. The set according to claim 1 ,
wherein the ink composition includes a silicone-based surfactant and an acetylene glycol-based surfactant as the first nonionic surfactant.

9. The set according to claim 1 ,
wherein the content of the second nonionic surfactant is 2 to 4% by mass with respect to a total mass of the reaction liquid.

10. The set according to claim 1 ,
wherein the content of the first nonionic surfactant is 0.5 to 3% by mass with respect to a total mass of the ink composition.

11. The set according to claim 1 ,
wherein the ink composition is attached to the recording medium using an ink jet method.

12. The set according to claim 1 ,
wherein when the ink composition and the reaction liquid are respectively attached to the recording medium, surface temperatures of the recording medium are respectively 38° C. or lower.

13. The set according to claim 1 , wherein S1/S2=3.2 to 4.

14. The set according to claim 1 , wherein the first nonionic surfactant and second nonionic surfactant are a silicone-based surfactant.

15. The set according to claim 1 , wherein the reaction liquid includes 1,2-hexanediol.

16. The set according to claim 1 , wherein the reaction liquid includes a nitrogen-containing solvent.

17. The set according to claim 1 , wherein a content of an organic solvent having a standard boiling point over 280° C. is 1% by mass or less in each of the ink composition and the reaction liquid with respect to the total mass of the ink composition and the reaction liquid, respectively.

18. The set according to claim 1 , wherein the ink composition includes an organic solvent having a standard boiling point of 180° C. to 280° C., and a content of the organic solvent having the standard boiling point of 180° C. to 280° C. is 15 to 40% by mass with respect to the total mass of the ink composition.

19. A recording method comprising:
attaching the set comprising the reaction liquid and the ink composition according to claim 1 to the recording medium.

20. The recording method according to claim 19 ,
wherein the ink composition includes a pigment, fine resin particles, and the first nonionic surfactant.

21. The recording method according to claim 19 ,
wherein the recording medium is a non-absorbing recording medium or a low-absorption recording medium.

22. The recording method according to claim 19 ,
wherein, when the ink composition and the reaction liquid are respectively attached to the recording medium, surface temperatures of the recording medium are respectively 45° C. or lower.

23. The recording method according to claim 19 ,
wherein the ink composition is attached in a state where a solvent component of the reaction liquid remains on the recording medium.

24. The recording method according to claim 19 ,
wherein, in a recording region of the recording medium, a region is provided in which, with respect to an attachment amount of the ink composition to a predetermined region, a ratio of the attachment amount of the reaction liquid to this region is 2% by mass or more and 40% by mass or less.

25. The recording method according to claim 24 ,
wherein, in the recording region, a region is provided in which, with respect to a total attachment amount of the ink composition to a predetermined region and the attachment amount of the reaction liquid to the region, a total amount of a surfactant included in the reaction liquid and a surfactant included in the ink composition is 0.85% by mass or more and 2% by mass or less.

26. The recording method according to claim 19 ,
wherein the reaction liquid and the ink composition are attached using an ink jet method and a maximum droplet amount of the ink composition is greater than a maximum droplet amount of the reaction liquid.

Assignees

• Seiko Epson Corp
• Sieko Epson Corp

Inventors

• Matsuzaki Akiko

Classifications

• B41M7/0018

  using ink-fixing material, e.g. mordant, precipitating agent, after printing, e.g. by ink-jet printing, coating or spraying · CPC title

• B41M5/0017

  Application of ink-fixing material, e.g. mordant, precipitating agent, on the substrate prior to printing, e.g. by ink-jet printing, coating or spraying · CPC title

• C09D11/38

  characterised by non-macromolecular additives other than solvents, pigments or dyes · CPC title

• B41M5/0023

  Digital printing methods characterised by the inks used (inks per se C09D11/00) · CPC title

• C09D11/36

  based on non-aqueous solvents · CPC title