| 摘要 |
PROBLEM TO BE SOLVED: To provide a clear ink composition which is such an ink composition that is applied on the surface of a portrait photograph or the like, is excellent in curing properties, and hardly yellows at heating.SOLUTION: The clear ink composition is such the clear ink composition that comprises a photo-polymerizable compound, a photo-polymerization initiator, an antioxidant, and the photo-polymerizable compound contains N-vinyl caprolactam, the anti-oxidant contains a phosphorous type antioxidant, and the content of the phosphorous type antioxidant is 0.1-5 mass% to the total amount of the clear ink composition. |
