Patent ID: 6582502
Filing Date: 2003-06-24
Classification: C09B,C09D

Abstract:
An ink for ink jet recording comprising at least one dye which is represented by the following general formula (1):Aâ€”N&boxH;N&boxH;Bâ€ƒâ€ƒGeneral formula (1) wherein A and B each independently represents a heterocyclic group which may be substituted, and said dye has at least one ionic hydrophilic group in a molecule, wherein said dye is a dye represented by the following general formula (2), (3) or (4): wherein, R1, R2, and R3 each independently represents one of a hydrogen atom, a halogen atom, a cyano group, an alkyl group, a cycloalkyl group, an aralkyl group, an aryl group, an alkylthio group, an arylthio group, and an ionic hydrophilic group; R4 represents any heterocyclic group which may be substituted and which is selected from the following Group 1 of heterocyclic groups; R5 represents one of a hydrogen atom, a cyano group, an alkyl group, a cycloalkyl group, an aralkyl group, an aryl group, an alkylthio group, an arylthio group, and an ionic hydrophilic group; Za represents one of â€”N&boxH;, â€”NHâ€” and â€”C(R11)&boxH;; Zb and Zc each independently represents one of â€”N&boxH; and â€”C(R11)&boxH;; R11 represents one of a hydrogen atom and a nonmetallic substituent; R6 represents any heterocyclic group which may be substituted and which is selected from the following Group 2 of heterocyclic groups; R7 and R9 each independently represents one of a hydrogen atom, a cyano group, an alkyl group, a cycloalkyl group, an aralkyl group, an aryl group, an alkylthio group, an arylthio group, and an ionic hydrophilic group; R8 represents one of a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an aryl group, an aryloxy group, a cyano group, an acylamino group, a sulfonylamino group, an alkoxycarbonylamino group, a ureido group, an alkylthio group, an arylthio group, an alkoxycarbonyl group, a carbamoyl group, a sulfamoyl group, a sulfonyl group, an acyl group, an alkylamino group, an arylamino group, a hydroxy group, and an ionic hydrophilic group; R10 represents any heterocyclic group which may be substituted and which is selected from the following Group 3 of heterocyclic groups; and the dye has at least one ionic hydrophilic group in a molecule,