| 摘要 |
A hydrazone dye is provided which forms cyan color having an excellent hue. The hydrazone dye is expressed by the following general formula (I):wherein Ar represents an aryl group or a heterocyclic group; R1 through R4 each represent a hydrogen atom, a halogen, -CN, -NH2, -NO2, -OH, -CO2H, -SO3H, a quaternary ammonium group, -CO2M1/n, -SO3M1/n, an alkyl group, alkenyl group, alkynyl group, aryl group, acyl group, carbamoyl group, sulfamoyl group, alkoxycarbonyl group, aryloxycarbonyl group, acyloxy group, alkoxy group, aryloxy group, alkylthio group, arylthio group, alkylsulfonyl group, arylsulfonyl group, alkylphosphoryl group, arylphosphoryl group, or a substituted amino group; M represents a metal atom; and n represents an integer from 1 to 4.
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