Sheet for ink jet recording, ink for ink jet recording, manufacturing method of ink for ink jet recording, ink set for ink jet recording, and ink jet recording method

1. An ink for ink jet recording, which comprises a dye, water, a water-miscible organic solvent and a compound represented by the following formula (1):

(R k ) p -N-[L m -(COOM n ) q ] r   (1)

wherein R represents an alkyl group, an aryl group or a heterocyclic group; when a plural number of R's are present, the plurality of R's may be the same or different; at least two of a plurality of R's may be linked with each other to form a cyclic structure; L represents a divalent or higher linking group; M represents a hydrogen atom, an alkali metal cation, an ammonium ion, an organic amine cation, or a negative ion sign; q and r each represents an integer of 1 or more; k and m each represents 0 or an integer of 1 or more; n represents an integer of 1 or more; p represents 0 or an integer of 1 or more; (p+r) is 3 or 4, when (p+r) is 4, the N atom represents a quaternary ammonium cation and one of the M's represents a negative ion sign, and

wherein the dye includes a compound represented by the following formula:

wherein A represents a 5-membered heterocyclic group;

B 1 and B 2 each represents a nitrogen atom, ═CR 1 - or —CR 2 ═, and when either one of B 1 and B 2 represents a nitrogen atom, the other represents ═CR 1 - or —CR 2 ═; R 5 and R 6 each represents a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group, an alkylsulfonyl group, an arylsulfonyl group or a sulfamoyl group, and the hydrogen atom of each substituent may be substituted;

G, R 1 and R 2 each independently represents a hydrogen atom, a halogen atom, an aliphatic group, an aromatic group, a heterocyclic group, a cyano group, a carboxyl group, a carbamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a heterocyclic oxycarbonyl group, an acyl group, a hydroxy group, an alkoxy group, an aryloxy group, a heterocyclic oxy group, a silyloxy group, an acyloxy group, a carbamoyloxy group, an alkoxycarbonyloxy group, an aryloxycarbonyloxy group, an amino group, an acylamino group, a ureido group, a sulfamoylamino group, an alkoxycarbonylamino group, an aryloxycarbonylamino group, an alkylsulfonylamino group, an arylsulfonylamino group, a heterocyclic sulfonylamino group, a nitro group, an alkylthio group, an arylthio group, a heterocyclic thio group, an alkylsulfonyl group, an arylsulfonyl group, a heterocyclic sulfonyl group, an alkylsulfinyl group, an arylsulfinyl group, a heterocyclic sulfinyl group, a sulfamoyl group or a sulfo group, and the hydrogen atom of each substituent may be substituted; and

R 1 and R 5 , or R 5 and R 6 may combine to form a 5- or 6-membered ring.

2. The ink for ink jet recording as claimed in claim 1 , wherein at least one of R and L in formula (1) contains a hydrocarbon group having 8 or more carbon atoms.

3. The ink for ink jet recording as claimed in claim 1 , wherein the compound represented by the formula (1) is a compound represented by the following formula (2):

R-N-(L-COOM) 2   (2)

wherein R, L and M each has the same meaning as described in claim 1 .

4. An ink for ink jet recording, which comprises a dye, water, a water-miscible organic solvent and a compound represented by the following formula (2):

R-N-(L-COOM) 2   (2)

wherein R represents an alkyl group, an aryl group or a heterocyclic group; L represents a divalent or higher linking group; and M represents a hydrogen atom or an alkali metal cation, and plural M's are different from each other and

wherein the dye includes a compound represented by the following formula (I):

wherein X 1 , X 2 , X 3 and X 4 each represents —SO—Z, —SO 2 —Z, —SO 2 NR 1 R 2 , a sulfo group, —CONR 1 R 2 or —CO 2 R 1 ; Z represents an alkyl group, a cycloalkyl group, an alkenyl group, an aralkyl group, an aryl group or a heterocyclic group, which are substituted or unsubstituted; R 1 and R 2 each represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an aralkyl group, an aryl group or a heterocyclic group, which are substituted or unsubstituted; when a plural number of Z's are present, the plurality of Z's may be the same or different; Y 1 , Y 2 , Y 3 and Y 4 each represents a monovalent substituent; when a plural number of X 1 's, X 2 's, X 3 's, X 4 's, Y 1 's, Y 2 's, Y 3 's or Y 4 's are present, the plurality of X 1 's, X 2 's, X 3 's, X 4 's, Y 1 's, Y 2 's, Y 3 's or Y 4 's may be the same or different; M represents a hydrogen atom, a metal atom, or an oxide, hydroxide or halide thereof; a 1 to a 4 and b 1 to b 4 each represents the number of substituent X 1 , X 2 , X 3 , X 4 , Y 1 , Y 2 , Y 3 or Y 4 , and a 1 to a 4 each represents an integer of 0 to 4 but all of a 1 to a 4 are not 0 at the same time; and b 1 to b 4 each represents an integer of 0 to 4.

5. A concentrated ink composition comprising a dye, water, and a compound represented by the following formula (1):

(R k ) p -N-[L m -(COOM n ) q ] r   (1)

wherein R represents an alkyl group, an aryl group or a heterocyclic group; when a plural number of R's are present, the plurality of R's may be the same or different; at least two of a plurality of R's may be linked with each other to form a cyclic structure; L represents a divalent or higher linking group; M represents a hydrogen atom, an alkali metal cation, an ammonium ion, an organic amine cation, or a negative ion sign; q and r each represents an integer of 1 or more; k and m each represents 0 or an integer of 1 or more; n represents an integer of 1 or more; p represents 0 or an integer of 1 or more; (p+r) is 3 or 4, and when (p+r) is 4, the N atom represents a quaternary ammonium cation and one of the M's represents a negative ion sign, and

wherein the dye includes a compound represented by the following formula:

wherein A represents a 5-membered heterocyclic group;

B 1 and B 2 each represents a nitrogen atom, ═CR 1 - or —CR 2 ═, and when either one of B 1 and B 2 represents a nitrogen atom, the other represents ═CR 1 - or —CR 2 ═; R 5 and R 6 each represents a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group, an alkylsulfonyl group, an arylsulfonyl group or a sulfamoyl group, and the hydrogen atom of each substituent may be substituted;

G, R 1 and R 2 each independently represents a hydrogen atom, a halogen atom, an aliphatic group, an aromatic group, a heterocyclic group, a cyano group, a carboxyl group, a carbamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a heterocyclic oxycarbonyl group, an acyl group, a hydroxy group, an alkoxy group, an aryloxy group, a heterocyclic oxy group, a silyloxy group, an acyloxy group, a carbamoyloxy group, an alkoxycarbonyloxy group, an aryloxycarbonyloxy group, an amino group, an acylamino group, a ureido group, a sulfamoylamino group, an alkoxycarbonylamino group, an aryloxycarbonylamino group, an alkylsulfonylamino group, an arylsulfonylamino group, a heterocyclic sulfonylamino group, a nitro group, an alkylthio group, an arylthio group, a heterocyclic thio group, an alkylsulfonyl group, an arylsulfonyl group, a heterocyclic sulfonyl group, an alkylsulfinyl group, an arylsulfinyl group, a heterocyclic sulfinyl group, a sulfamoyl group or a sulfo group, and the hydrogen atom of each substituent may be substituted; and

R 1 and R 5 , or R 5 and R 6 may combine to form a 5- or 6-membered ring.

6. The concentrated ink composition as claimed in claim 5 , which comprises the compound represented by the formula (1) in an amount of from 0.001 to 30 wt %.

7. The concentrated ink composition as claimed in claim 5 , which comprises the dye in an amount of from 0.01 to 50 wt %.

8. A method for manufacturing an ink for ink jet recording, which comprises manufacturing the ink by using the concentrated ink composition as claimed in claim 5 .

9. An ink set for ink jet recording, which comprises the ink for ink jet recording as claimed in claim 1 .

10. An ink jet recording method which comprises recording an image by using the ink for ink jet recording as claimed in claim 1 with an ink jet printer.

11. An ink jet recording method which comprises recording an image by using the ink set as claimed in claim 9 with an ink jet printer.

12. A concentrated ink composition, comprising a dye, water and a compound represented by the following formula (2):

R-N-(L-COOM) 2   (2)

wherein R represents an alkyl group, an aryl group or a heterocyclic group; L represents a divalent or higher linking group; and M represents a hydrogen atom or an alkali metal cation and plural M's are different from each other.

13. The concentrated ink composition as claimed in claim 12 , which comprises the compound represented by formula (2) in an amount of from 0.001 to 30 wt %.

14. The concentrated ink composition as claimed in claim 12 , which comprises the dye in an amount of from 0.01 to 50 wt %.

15. A method for manufacturing an ink for ink jet recording, which comprises manufacturing the ink by using the concentrated ink composition as claimed in claim 12 .

16. An ink set for ink jet recording, which comprises the ink for ink jet recording as claimed in claim 4 .

17. An ink jet recording method, which comprises recording an image by using the ink for ink jet recording as claimed in claim 4 with an ink jet printer.

18. An ink jet recording method, which comprises recording an image by using the ink set as claimed in claim 16 with an ink jet printer.