Coloring composition, ink-jet ink, and ink jet recording method

• US 20010045176A1
• Filed: 03/08/2001
• Published: 11/29/2001
• Est. Priority Date: 03/29/2000
• Status: Active Grant

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Inventors: Ito, Takayuki, Kimura, Keizo
• Granted Patent: US 6,521,031 B2
• Time in Patent Office: Days
• US Class Current: 106/31.47
• CPC Class Codes: C09B 55/009 Azomethine dyes, the C-atom of the group -C=N- being part of a ring (Image)
• CPC Class Codes: C09D 11/32 characterised by colouring agents
• CPC Class Codes: C09D 11/328 characterised by dyes

Abstract

An ink-jet ink which includes a coloring composition which contains an oil-soluble dye represented in the following formula (I). In the formula (I), R¹ and R² represent respectively independently a hydrogen atom, a halogen atom, an aliphatic group, an aromatic group, or the like. A represents —NR⁵R⁶ or a hydroxyl group. R⁵ and R⁶ represent respectively independently a hydrogen atom, an aliphatic group, or the like. B¹ represents ═C(R⁷)— or ═N—, and B²represents —C (R⁸)═ or —N═. R³, R⁴, R⁷, and R⁸ represent respectively independently a hydrogen atom, a halogen atom, an aliphatic group, an aromatic group, or the like. Q includes at least one nitrogen atom and, together with a carbon atom to be combined, represents an atom group which is required to form a nitrogen-containing heterocyclic ring having a five-membered ring or more.

Claims

1. An ink-jet ink which includes a coloring composition which contains an oil-soluble dye represented in the following formula (I):

2. An ink-jet ink according to

claim 1

, wherein said oil-soluble dye which is represented in the formula (I) is an oil-soluble dye which is represented in the following formula (II):

3. An ink-jet ink according to

claim 1

, wherein said oil-soluble dye which is represented in the formula (I) is an oil-soluble dye which is represented in the following formula (III):

4. An ink-jet ink according to

claim 1

, wherein said oil-soluble dye which is represented in the formula (I) is dispersed in a water-based medium.

5. An ink-jet ink according to

claim 4

, wherein said oil-soluble dye is represented in the formula (I) and is dissolved in a high boiling point organic solvent which has a boiling point of 150°

C. or more and has a specific inductive capacity at 25°

C. of 3 to 12, and said oil-soluble dye is dispersed in the water-based medium.

6. An ink-jet ink according to

claim 4

, wherein coloring particulates, which contain said oil-soluble dye which is represented in the formula (I) and an oil-soluble polymer, are dispersed in the water-based medium.

7. An ink-jet ink according to

claim 6

, wherein content of said oil-soluble polymer in the coloring composition is from 10 to 1000 mass parts, relative to 100 mass parts of the oil-soluble dye.

8. An ink-jet ink according to

claim 6

, wherein said coloring composition includes a high boiling point organic solvent.

9. An ink-jet ink according to

claim 8

, wherein content of said high boiling point organic solvent in the coloring composition is from 1 to 1000 mass parts, relative to 100 mass parts of the oil-soluble dye.

10. An ink-jet according to

claim 6

, wherein in the coloring particulates, said oil-soluble dye is dispersed in the oil-soluble polymer.

11. A coloring composition which contains an oil-soluble dye which is represented in the following formula (I):

12. A coloring composition according to

claim 11

, wherein said coloring composition is used for an ink composition.

13. An ink jet recording method in which recording is carried out using an ink-jet ink, said ink-jet ink includes a coloring composition which contains an oil-soluble dye represented in the following formula (I):

14. An ink jet recording method according to

claim 13

, wherein said oil-soluble dye which is represented in the formula (I) is an oil-soluble dye which is represented in the following formula (II):

15. An ink jet recording method according to

claim 13

, wherein said oil-soluble dye which is represented in the formula (I) is an oil-soluble dye which is represented in the following formula (III):

16. An ink jet recording method according to

claim 13

, wherein said oil-soluble dye which is represented in the formula (I) is dispersed in a water-based medium.

17. An ink jet recording method according to

claim 16

, wherein said oil-soluble dye is represented in the formula (I) and is dissolved in a high boiling point organic solvent which has a boiling point of 150°

C. or more and has a specific inductive capacity at 25°

C. of 3 to 12, and said oil-soluble dye is dispersed in the water-based medium.

18. An ink jet recording method according to

claim 16

, wherein coloring particulates, which contain said oil-soluble dye which is represented in the formula (I) and an oil-soluble polymer, are dispersed in the water-based medium.

19. An ink jet recording method according to

claim 18

, wherein said coloring composition includes a high boiling point organic solvent.

20. An ink jet recording method according to

claim 18

, wherein in the coloring particulates, said oil-soluble dye is dispersed in the oil-soluble polymer.