Ink composition, ink for inkjet recording and ink set using the ink

An ink for inkjet recording comprising an ink composition comprising a polymerizable compound, a polymerization initiator, a pigment and an oil-soluble dye, wherein the pigment and the oil-soluble dye are in any combination of a yellow pigment and a yellow oil-soluble dye, or a magenta pigment and a magenta oil-soluble dye,

• wherein the yellow oil-soluble dye comprises at least one compound selected from compounds represented by the following formulas (I-1), (II) and (III):
• wherein in the formula (I-1),
• W, Y1, Y2 and R1 to R4 are each independently a hydrogen atom or a monovalent substituent;
• R5 to R8 are each independently an alkoxycarbonyl group;
• and
• X1 and X2 are each independently a monovalent electron-withdrawing group having a Hammett's σp value of 0.20 or more;
• wherein in the formula (II),
• R11, R13 and R14 are each independently an unsubstituted or substituted alkyl group, an unsubstituted or substituted aryl group or an unsubstituted or substituted heteroaryl group, and R12 and R15 are each independently a hydrogen atom or a monovalent substituent, wherein R13 and R14 may be linked to each other to form a 5- or 6-membered hetero ring;
• and
• Z1, Z2, Z3 and Z4 are each independently a hydrogen atom or a monovalent substituent, wherein Z1 and Z2, and Z3 and Z4 may be linked to each other to form a 5- or 6-membered ring;
• wherein in the formula (III),
• R11, R12, R13, R14 and R15 are each independently a hydrogen atom or a monovalent substituent;
• and
• R16 and R17 are each independently an unsubstituted or substituted alkyl group, an unsubstituted or substituted aryl group or an unsubstituted or substituted heteroaryl group, and may be linked to each other to form a ring;
• wherein the magenta oil-soluble dye comprises a compound represented by the following formula (IV-1):
• wherein in the formula (IV-1), Z1 is a cyano group;
• Z2 is an isopropyl group or a t-butyl group;
• R1 is a hydrogen atom;
• R2 is an alkyl group having 1 to 4 carbon atoms;
• R3 and R4 are each independently an alkyl group, an aryl group, a heterocyclic group, a sulfonyl group or an acyl group;
• a and e are each an alkyl group which may be substituted, wherein the number of carbon atoms of a+e is 2 or more;
• b, c and d are each independently a hydrogen atom, a halogen atom or an alkyl group;
• and Q is a heterocyclic group.