| 摘要 |
PROBLEM TO BE SOLVED: To provide an inkjet ink composition having excellent discharge stability, clogging recoverability, and color development, and having a low environmental load.SOLUTION: An inkjet ink composition contains water, a quinacridone solid solution pigment, and 1,2-alkanediol having 4-8 carbon atoms and does not substantially contain a glycol ether represented by a following formula. The content of the 1,2-alkanediol is 2.5 mass% or more and 6.5 mass% or less. The quinacridone solid solution pigment contains two or more quinacridone-based compounds selected from the group consisting of unsubstituted quinacridone, 3,10-dichloroquinacridone, 2,9-dimethylquinacridone, and 2,9-dichloroquinacridone. In the formula: RO-(CH-CH-O)-R', R represents an alkyl group or an aryl group; R' represents an alkyl group or a hydrogen atom; and n represents an integer of 1-3. |
