Ink composition for ink jet printing, image forming method, and recorded material

An ink composition for ink jet printing comprising:

• a colorant represented by the following Formula 1;
• resin particles;
• a water-soluble organic solvent;
• and
• water,
• in Formula 1, Y1 and Y2 each independently represent a non-metal atomic group which forms an aliphatic ring or a heterocycle,
• M+ represents a proton or a monovalent alkali metal cation or organic cation,
• L1 represents a methine chain consisting of 5 or 7 methine groups, and
• a methine group at a center of the methine chain has a substituent represented by the following Formula A,
• *—SA-TA Formula A,
• in Formula A, SA represents a single bond, an alkylene group, an alkenylene group, an alkynylene group, —O—, —S—, —NRL1—, —C(═O)—, —C(═O)—, —C(═O)NRL1—, —S(═O)2—, —ORL2—, or a group including a combination of at least two thereof,
• RL1 represents a hydrogen atom, a halogen atom, an alkyl group, an aryl group, or a monovalent heterocyclic group,
• RL2 represents an alkylene group, an arylene group, or a divalent heterocyclic group,
• TA represents a halogen atom, an alkyl group, a cycloalkyl group, an aryl group, a monovalent heterocyclic group, a cyano group, a hydroxy group, a formyl group, a carboxy group, an amino group, a thiol group, a sulfo group, a phosphoryl group, a boryl group, a vinyl group, an ethynyl group, a trialkylsilyl group, or a trialkoxysilyl group,
• in a case where SA represents a single bond or an alkylene group and TA represents an alkyl group, the total number of carbon atoms included in SA and TA is 3 or more, and
• * represents a binding site to the methine group at the center of the methine chain.