Cleaning liquid for aqueous ink

A cleaning liquid for a water-based ink that comprises a pigment and a water-insoluble polymer, said cleaning liquid comprising (A) a surfactant, (B) a water-soluble organic solvent comprising (b-1) diethylene glycol monoisopropyl ether, and water, in which

• the surfactant (A) comprises at least one compound selected from the group consisting of (a-1) an acetylene glycol or an ethyleneoxide adduct of the acetylene glycol, and (a-2) a polyethylene glycol alkyl ether comprising an alkyl group having not less than 8 carbon atoms or a polyethylene glycol aryl ether comprising an aryl group having not less than 6 carbon atoms,
• the water-soluble organic solvent (B) further comprises (b-2) a compound having a solubility parameter (SP value) of not less than 20 (MPa)1/2 and not more than 35 (MPa)1/2, the compound (b-2) is a polyhydric alcohol, and a mass ratio of the compound (b-2) to the diethylene glycol monoisopropyl ether (b-1) [(b-2)/(b-1)] is not less than 0.03 and not more than 3, and
• a content of the water-soluble organic solvent (B) in the cleaning liquid is not less than 7% by mass and not more than 30% by mass, and
• a content of the diethylene glycol monoisopropyl ether (b-1) in the cleaning liquid is not less than 5% by mass and not more than 25% by mass.