Ink set and recording method using the same

• US 10,563,078 B2
• Filed: 04/27/2018
• Issued: 02/18/2020
• Est. Priority Date: 08/21/2013
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Okuda, Ippei, Aoyama, Tetsuya
• Primary Examiner(s): Lin, Erica S
• Application Number:
  US15/964,829
• Publication Number:
  US 20180244943A1
• Time in Patent Office: 662 Days
• Field of Search: None
• CPC Class Codes: C09D 11/322 Pigment inks
• CPC Class Codes: C09D 11/40 Ink-sets specially adapted for multi-colour inkjet printing
• CPC Class Codes: C09D 11/54 Inks based on two liquids, one liquid being the ink, the other liquid being a reaction solution, a fixer or a treatment solution for the ink

Abstract

An ink set includes a reaction liquid containing coagulant; a first ink containing a color material; and a second ink containing a color material. The ink set is used for recording on a non-absorptive recording medium or a low-absorptive recording medium and for imparting the reaction liquid, the first ink, and the second ink to the recording medium in a superimposed manner in this order.

Claims

1. An ink set comprising:

a reaction liquid containing coagulant and at least one selected from a group consisting of a component which becomes a receiving layer of an ink applied after the reaction liquid, and a cationic resin;

a first ink containing a color material; and

a second ink containing a color material,

wherein the ink set is used for recording on a non-absorptive recording medium or a low-absorptive recording medium and for imparting the reaction liquid, the first ink, and the second ink to the recording medium in a superimposed manner in this order;

wherein any one of the first ink and the second ink is a color ink containing a color material or a black ink containing a black color material;

wherein the other one of the first ink and the second ink is a white ink containing a white color material or a metallic ink containing a metallic color material; and

wherein the mass ratio of at least one (unit;

g) selected from the group consisting of the component which becomes the receiving layer, and the cationic resin, which are contained in the reaction liquid, to the color material (unit;

g) contained in the first ink is 7;

1 to 70;

1 (the color material;

at least one selected from the group).

2. The ink set according to claim 1,

wherein the coagulant contains at least one selected from a group consisting of a polyvalent metal salt and an organic acid.

3. The ink set according to claim 1,

wherein the first ink is the white ink containing the white color material or the metallic ink containing the metallic color material, and

wherein the second ink is the color ink containing the color material or the black ink containing the black color material.

4. The ink set according to claim 1,

wherein a surface tension of the reaction liquid is less than or equal to 55 mN/m at a temperature of 25°

C.

5. A recording method using the ink set according to claim 1, the method comprising:

imparting a reaction liquid contained in the ink set to a non-absorptive recording medium or a low-absorptive recording medium;

imparting a first ink contained in the ink set to the area to which the reaction liquid is imparted; and

imparting a second ink contained in the ink set to the area to which the first ink is imparted.

8. The ink set according to claim 1,

wherein a content of color material in the first ink with respect to a total mass of the first ink is 10 to 15 mass %;

and

a content of color material in the second ink with respect to the total mass of the second ink is 2 to 4 mass %.

9. The ink set according to claim 1,

wherein the first ink and the second ink contain a resin emulsion.

10. The ink set according to claim 9,

wherein the resin emulsion contains a thermoplastic resin.

11. The ink set according to claim 9,

wherein the resin emulsion contains at least one of a urethane resin, a (meth)acrylic-based resin, and a styrene-(meth)acrylic-acid copolymer-based resin.

6. A recording method using an ink set that includes a reaction liquid containing coagulant, a first ink containing a color material, and a second ink containing a color material, the method comprising:

imparting the reaction liquid contained in the ink set to a non-absorptive recording medium or a low-absorptive recording medium;

imparting the first ink contained in the ink set to the area to which the reaction liquid is imparted; and

imparting the second ink contained in the ink set to the area to which the first ink is imparted,

wherein the reaction liquid, the first ink, and the second ink are imparted to the recording medium in a superimposed manner in this order;

wherein any one of the first ink and the second ink is a color ink containing a color material or a black ink containing a black color material;

wherein the other one of the first ink and the second ink is a white ink containing a white color material or a metallic ink containing a metallic color material; and

wherein after the imparting of the first ink and before the imparting of the second ink, a volatilization amount of a volatile component contained in the reaction liquid and the first ink on the non-absorptive recording medium or the low-absorptive recording medium is less than or equal to 95 mass % with respect to 100 total mass % of the volatile component of the reaction liquid and the first ink before the imparting.

16. The recording method according to claim 6,

wherein a content of color material in the first ink with respect to a total mass of the first ink is 10 to 15 mass %;

and

a content of color material in the second ink with respect to the total mass of the second ink is 2 to 4 mass %.

17. The recording method according to claim 6,

wherein the first ink and the second ink contain a resin emulsion.

18. The recording method according to claim 17,

wherein the resin emulsion contains a thermoplastic resin.

19. The recording method according to claim 17,

wherein the resin emulsion contains at least one of a urethane resin, a (meth)acrylic-based resin, and a styrene-(meth)acrylic-acid copolymer-based resin.

20. The recording method according to claim 6, wherein after the imparting of the first ink and before the imparting of the second ink, the volatilization amount of the volatile component contained in the reaction liquid and the first ink on the non-absorptive recording medium or the low-absorptive recording medium is 10 to 95 mass % with respect to 100 total mass % of the volatile component of the reaction liquid and the first ink before the imparting.

21. The recording method according to claim 6, wherein after the imparting of the first ink and before the imparting of the second ink, the volatilization amount of the volatile component contained in the reaction liquid and the first ink on the non-absorptive recording medium or the low-absorptive recording medium is 10 to 50 mass % with respect to 100 total mass % of the volatile component of the reaction liquid and the first ink before the imparting.

22. The recording method according to claim 6, wherein a surface temperature of the recording medium is 25 to 40°

C. during the imparting of the first ink and the imparting of the second ink.

23. The recording method according to claim 6, wherein a surface temperature of the recording medium is 25 to 45°

C. during the imparting of the first ink and the imparting of the second ink.

24. The recording method according to claim 6, wherein the ratio of the mass (unit:

g) of at least one selected from a group consisting of a component which becomes a receiving layer of the first ink and the second ink, and a cationic resin, which are contained in the reaction liquid per unit area of the non-absorptive recording medium or the low-absorptive recording medium, to the mass (unit;

g) of the color material contained in the first ink is 7;

1 to 50;

1 (the color material;

at least one selected from the group).

7. A recording method using an ink set that includes a reaction liquid containing coagulant, a first ink containing a color material, and a second ink containing a color material, the method comprising:

imparting the reaction liquid contained in the ink set to a non-absorptive recording medium or a low-absorptive recording medium;

imparting the first ink contained in the ink set to the area to which the reaction liquid is imparted; and

imparting the second ink contained in the ink set to the area to which the first ink is imparted,

wherein the reaction liquid, the first ink, and the second ink are imparted to the recording medium in a superimposed manner in this order;

wherein any one of the first ink and the second ink is a color ink containing a color material or a black ink containing a black color material;

wherein the other one of the first ink and the second ink is a white ink containing a white color material or a metallic ink containing a metallic color material; and

wherein the ratio of the mass (unit;

g) of at least one selected from a group consisting of a component which becomes a receiving layer of the first ink and the second ink, and a cationic resin, which are contained in the reaction liquid per unit area of the non-absorptive recording medium or the low-absorptive recording medium, to the mass (unit;

g) of the color material contained in the first ink is 7;

1 to 70;

1 (the color material;

at least one selected from the group).

25. The recording method according to claim 7,

wherein a content of color material in the first ink with respect to a total mass of the first ink is 10 to 15 mass %;

and

a content of color material in the second ink with respect to the total mass of the second ink is 2 to 4 mass %.

26. The recording method according to claim 7,

wherein the first ink and the second ink contain a resin emulsion.

27. The recording method according to claim 26,

wherein the resin emulsion contains a thermoplastic resin.

28. The recording method according to claim 26,

wherein the resin emulsion contains at least one of a urethane resin, a (meth)acrylic-based resin, and a styrene-(meth)acrylic-acid copolymer-based resin.

29. The recording method according to claim 7, wherein after the imparting of the first ink and before the imparting of the second ink, a volatilization amount of a volatile component contained in the reaction liquid and the first ink on the non-absorptive recording medium or the low-absorptive recording medium is 10 to 95 mass % with respect to 100 total mass % of the volatile component of the reaction liquid and the first ink before the imparting.

30. The recording method according to claim 7, wherein after the imparting of the first ink and before the imparting of the second ink, a volatilization amount of a volatile component contained in the reaction liquid and the first ink on the non-absorptive recording medium or the low-absorptive recording medium is 10 to 50 mass % with respect to 100 total mass % of the volatile component of the reaction liquid and the first ink before the imparting.

31. The recording method according to claim 7, wherein a surface temperature of the recording medium is 25 to 40°

C. during the imparting of the first ink and the imparting of the second ink.

32. The recording method according to claim 7, wherein a surface temperature of the recording medium is 25 to 45°

C. during the imparting of the first ink and the imparting of the second ink.

33. The recording method according to claim 7, wherein the ratio of the mass (unit:

g) of at least one selected from a group consisting of a component which becomes a receiving layer of the first ink and the second ink, and a cationic resin, which are contained in the reaction liquid per unit area of the non-absorptive recording medium or the low-absorptive recording medium, to the mass (unit;

g) of the color material contained in the first ink is 7;

1 to 50;

1 (the color material;

at least one selected from the group).

12. A recording method using an ink set that includes a reaction liquid containing coagulant, a first ink containing a color material, and a second ink containing a color material, the method comprising:

imparting the reaction liquid contained in the ink set to a non-absorptive recording medium or a low-absorptive recording medium;

imparting the first ink contained in the ink set to the area to which the reaction liquid is imparted; and

imparting the second ink contained in the ink set to the area to which the first ink is imparted,

wherein the reaction liquid, the first ink, and the second ink are imparted to the recording medium in a superimposed manner in this order;

wherein any one of the first ink and the second ink is a color ink containing a color material or a black ink containing a black color material;

wherein the other one of the first ink and the second ink is a white ink containing a white color material or a metallic ink containing a metallic color material; and

wherein 1 to 10 mg/inch² of the reaction liquid is imparted to the recording medium.

34. The recording method according to claim 12,

wherein a content of color material in the first ink with respect to a total mass of the first ink is 10 to 15 mass %;

and

a content of color material in the second ink with respect to the total mass of the second ink is 2 to 4 mass %.

35. The recording method according to claim 12,

wherein the first ink and the second ink contain a resin emulsion.

36. The recording method according to claim 35,

wherein the resin emulsion contains a thermoplastic resin.

37. The recording method according to claim 35,

wherein the resin emulsion contains at least one of a urethane resin, a (meth)acrylic-based resin, and a styrene-(meth)acrylic-acid copolymer-based resin.

38. The recording method according to claim 12, wherein after the imparting of the first ink and before the imparting of the second ink, a volatilization amount of a volatile component contained in the reaction liquid and the first ink on the non-absorptive recording medium or the low-absorptive recording medium is 10 to 95 mass % with respect to 100 total mass % of the volatile component of the reaction liquid and the first ink before the imparting.

39. The recording method according to claim 12, wherein after the imparting of the first ink and before the imparting of the second ink, a volatilization amount of a volatile component contained in the reaction liquid and the first ink on the non-absorptive recording medium or the low-absorptive recording medium is 10 to 50 mass % with respect to 100 total mass % of the volatile component of the reaction liquid and the first ink before the imparting.

40. The recording method according to claim 12, wherein a surface temperature of the recording medium is 25 to 40°

C. during the imparting of the first ink and the imparting of the second ink.

41. The recording method according to claim 12, wherein a surface temperature of the recording medium is 25 to 45°

C. during the imparting of the first ink and the imparting of the second ink.

42. The recording method according to claim 12, wherein the ratio of the mass (unit:

g) of at least one selected from a group consisting of a component which becomes a receiving layer of the first ink and the second ink, and a cationic resin, which are contained in the reaction liquid per unit area of the non-absorptive recording medium or the low-absorptive recording medium, to the mass (unit;

g) of the color material contained in the first ink is 7;

1 to 50;

1 (the color material;

at least one selected from the group).

13. A recording method using an ink set that includes a reaction liquid containing coagulant, a first ink containing a color material, and a second ink containing a color material, the method comprising:

imparting the reaction liquid contained in the ink set to a non-absorptive recording medium or a low-absorptive recording medium;

imparting the first ink contained in the ink set to the area to which the reaction liquid is imparted; and

imparting the second ink contained in the ink set to the area to which the first ink is imparted,

wherein the reaction liquid, the first ink, and the second ink are imparted to the recording medium in a superimposed manner in this order;

wherein any one of the first ink and the second ink is a color ink containing a color material or a black ink containing a black color material;

wherein the other one of the first ink and the second ink is a white ink containing a white color material or a metallic ink containing a metallic color material; and

wherein a surface temperature of the recording medium is lower than or equal to 40°

C. during the imparting of the first ink and the imparting of the second ink.

43. The recording method according to claim 13,

wherein a content of color material in the first ink with respect to a total mass of the first ink is 10 to 15 mass %;

and

a content of color material in the second ink with respect to the total mass of the second ink is 2 to 4 mass %.

44. The recording method according to claim 13,

wherein the first ink and the second ink contain a resin emulsion.

45. The recording method according to claim 44,

wherein the resin emulsion contains a thermoplastic resin.

46. The recording method according to claim 44,

wherein the resin emulsion contains at least one of a urethane resin, a (meth)acrylic-based resin, and a styrene-(meth)acrylic-acid copolymer-based resin.

47. The recording method according to claim 13, wherein after the imparting of the first ink and before the imparting of the second ink, a volatilization amount of a volatile component contained in the reaction liquid and the first ink on the non-absorptive recording medium or the low-absorptive recording medium is 10 to 95 mass % with respect to 100 total mass % of the volatile component of the reaction liquid and the first ink before the imparting.

48. The recording method according to claim 13, wherein after the imparting of the first ink and before the imparting of the second ink, a volatilization amount of a volatile component contained in the reaction liquid and the first ink on the non-absorptive recording medium or the low-absorptive recording medium is 10 to 50 mass % with respect to 100 total mass % of the volatile component of the reaction liquid and the first ink before the imparting.

49. The recording method according to claim 13, wherein a surface temperature of the recording medium is 25 to 40°

C. during the imparting of the first ink and the imparting of the second ink.

50. The recording method according to claim 13, wherein the ratio of the mass (unit:

g) of at least one selected from a group consisting of a component which becomes a receiving layer of the first ink and the second ink, and a cationic resin, which are contained in the reaction liquid per unit area of the non-absorptive recording medium or the low-absorptive recording medium, to the mass (unit;

g) of the color material contained in the first ink is 7;

1 to 50;

1 (the color material;

at least one selected from the group).

14. A recording method using an ink set that includes a reaction liquid containing coagulant, a first ink containing a color material, and a second ink containing a color material, the method comprising:

imparting the reaction liquid contained in the ink set to a non-absorptive recording medium or a low-absorptive recording medium;

imparting the first ink contained in the ink set to the area to which the reaction liquid is imparted; and

imparting the second ink contained in the ink set to the area to which the first ink is imparted,

wherein the reaction liquid, the first ink, and the second ink are imparted to the recording medium in a superimposed manner in this order;

wherein any one of the first ink and the second ink is a color ink containing a color material or a black ink containing a black color material;

wherein the other one of the first ink and the second ink is a white ink containing a white color material or a metallic ink containing a metallic color material; and

wherein the recording medium is heated, and thereafter the first ink and the second ink are imparted to the heated recording medium.

51. The recording method according to claim 14,

wherein a content of color material in the first ink with respect to a total mass of the first ink is 10 to 15 mass %;

and

a content of color material in the second ink with respect to the total mass of the second ink is 2 to 4 mass %.

52. The recording method according to claim 14,

wherein the first ink and the second ink contain a resin emulsion.

53. The recording method according to claim 52,

wherein the resin emulsion contains a thermoplastic resin.

54. The recording method according to claim 52,

wherein the resin emulsion contains at least one of a urethane resin, a (meth)acrylic-based resin, and a styrene-(meth)acrylic-acid copolymer-based resin.

55. The recording method according to claim 14, wherein after the imparting of the first ink and before the imparting of the second ink, a volatilization amount of a volatile component contained in the reaction liquid and the first ink on the non-absorptive recording medium or the low-absorptive recording medium is 10 to 95 mass % with respect to 100 total mass % of the volatile component of the reaction liquid and the first ink before the imparting.

56. The recording method according to claim 14, wherein after the imparting of the first ink and before the imparting of the second ink, a volatilization amount of a volatile component contained in the reaction liquid and the first ink on the non-absorptive recording medium or the low-absorptive recording medium is 10 to 50 mass % with respect to 100 total mass % of the volatile component of the reaction liquid and the first ink before the imparting.

57. The recording method according to claim 14, wherein a surface temperature of the recording medium is 25 to 40°

C. during the imparting of the first ink and the imparting of the second ink.

58. The recording method according to claim 14, wherein a surface temperature of the recording medium is 25 to 45°

C. during the imparting of the first ink and the imparting of the second ink.

59. The recording method according to claim 14, wherein the ratio of the mass (unit:

g) of at least one selected from a group consisting of a component which becomes a receiving layer of the first ink and the second ink, and a cationic resin, which are contained in the reaction liquid per unit area of the non-absorptive recording medium or the low-absorptive recording medium, to the mass (unit;

g) of the color material contained in the first ink is 7;

1 to 50;

1 (the color material;

at least one selected from the group).

15. A recording method using an ink set that includes a reaction liquid containing coagulant, a first ink containing a color material, and a second ink containing a color material, the method comprising:

imparting the reaction liquid contained in the ink set to a non-absorptive recording medium or a low-absorptive recording medium;

imparting the first ink contained in the ink set to the area to which the reaction liquid is imparted; and

imparting the second ink contained in the ink set to the area to which the first ink is imparted,

wherein the reaction liquid, the first ink, and the second ink are imparted to the recording medium in a superimposed manner in this order;

wherein any one of the first ink and the second ink is a color ink containing a color material or a black ink containing a black color material;

wherein the other one of the first ink and the second ink is a white ink containing a white color material or a metallic ink containing a metallic color material; and

wherein the recording medium is heated after the recording medium has been imparted with the reaction liquid and before imparting the first ink.

60. The recording method according to claim 15,

wherein a content of color material in the first ink with respect to a total mass of the first ink is 10 to 15 mass %;

and

a content of color material in the second ink with respect to the total mass of the second ink is 2 to 4 mass %.

61. The recording method according to claim 15,

wherein the first ink and the second ink contain a resin emulsion.

62. The recording method according to claim 61,

wherein the resin emulsion contains a thermoplastic resin.

63. The recording method according to claim 61,

wherein the resin emulsion contains at least one of a urethane resin, a (meth)acrylic-based resin, and a styrene-(meth)acrylic-acid copolymer-based resin.

64. The recording method according to claim 15, wherein after the imparting of the first ink and before the imparting of the second ink, a volatilization amount of a volatile component contained in the reaction liquid and the first ink on the non-absorptive recording medium or the low-absorptive recording medium is 10 to 95 mass % with respect to 100 total mass % of the volatile component of the reaction liquid and the first ink before the imparting.

65. The recording method according to claim 15, wherein after the imparting of the first ink and before the imparting of the second ink, a volatilization amount of a volatile component contained in the reaction liquid and the first ink on the non-absorptive recording medium or the low-absorptive recording medium is 10 to 50 mass % with respect to 100 total mass % of the volatile component of the reaction liquid and the first ink before the imparting.

66. The recording method according to claim 15, wherein a surface temperature of the recording medium is 25 to 40°

C. during the imparting of the first ink and the imparting of the second ink.

67. The recording method according to claim 15, wherein a surface temperature of the recording medium is 25 to 45°

C. during the imparting of the first ink and the imparting of the second ink.

68. The recording method according to claim 15, wherein the ratio of the mass (unit:

g) of at least one selected from a group consisting of a component which becomes a receiving layer of the first ink and the second ink, and a cationic resin, which are contained in the reaction liquid per unit area of the non-absorptive recording medium or the low-absorptive recording medium, to the mass (unit;

g) of the color material contained in the first ink is 7;

1 to 50;

1 (the color material;

at least one selected from the group).