Ink composition for ink jet recording and image formation method

Claim 1

An ink composition for ink jet recording comprising: an aqueous medium; a high boiling organic solvent dispersed in the aqueous medium; an oil-soluble dye dissolved in the high boiling organic solvent; and a compound represented by the following formula (I): wherein R 101 and R 102 each independently represents one of a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic group, an acyl group, an aliphatic oxycarbonyl group, an aromatic oxycarbonyl group, an aliphatic sulfonyl group, an aromatic sulfonyl group, a substituted or unsubstituted carbamoyl group and a substituted or unsubstituted thiocarbamoyl group; R 103 represents one of an aliphatic group, an aromatic group, an aliphatic oxy group, an aromatic oxy group, an aliphatic thio group, an aromatic thio group, an acyloxy group, an aliphatic oxycarbonyloxy group, an aromatic oxycarbonyloxy group, a substituted or unsubstituted amino group, a heterocyclic group and a hydroxyl group; and R 101 and R 102 , R 102 and R 103 , and R 103 and R 101 may each combine with each other to form one of 5-, 6- and 7-membered ring, excluding the case a 2,2,6,6-tetraalkylpiperidine skeleton is formed, wherein the oil-soluble dye is represented by the following formula (II): wherein X represents an electron attractive group having a Hammett substituent constant σ p of at least 0.20; R 1 and R 2 each independently represents one of a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted cycloalkyl group and a substituted or unsubstituted aralkyl group; R 3 , R 4 , R 5 and R 6 each independently represents one of a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an aralkyl group, an aiyl group, a heterocyclic group, a cyano group, a hydroxyl group, a nitro group, an amino group, an alkylamino group, an alkoxy group, an aryloxy group, an amido group, an arylamino group, a ureido group, a sulfamoylamino group, an alkylthio group, an arylthio group, an alkoxycarbonylamino group, a sulfonamido group, a carbamoyl group, a sulfamoyl group, a sulfonyl group, an alkoxycarbonyl group, a heterocyclic oxy group, an azo group, an acyloxy group, a carbamoyloxy group, a silyloxy group, an aryloxycarbonyl group, an aryloxycarbonylamino group, an imido group, a heterocyclic thio group, a sulfinyl group, a phosphoryl group and an acyl group, which may each further have a substituent group; R 1 and R 2 , R 3 and R 1 , and R 2 and R 5 may each combine with each other to form a ring; Y represents one of a secondary or tertiary alkyl group, and a substituted or unsubstituted aryl group; and A represents a group comprising a non-metallic atomic group necessary for forming a one of 5-, 6-, 7- and 8-membered ring, and the ring may be substituted, may be a saturated ring, and may have an unsaturated bond.