| 摘要 |
PROBLEM TO BE SOLVED: To provide an oil based ink composition having good hue and capable of forming an image having high storage stability such as lightfastness. SOLUTION: The oil based ink composition comprises an oil medium and a compound represented by the general formula (1) (wherein Ar is an aryl group or heterocyclic group; R1-R4 are each independently a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an acyl group, a carbamoyl group, a sufamoyl group, an alkoxylcarbonyl group, an aryloxycarbonyl group, an acyloxy group, an alkoxy group, an aryloxy group, an alkylthio group, an arylthio group, an alkylsulfonyl group, an arylsulfonyl group, an alkylphosphoryl group, an arylphosphoryl group, an amino group, -CN or -ON). |
