| abstract |
PROBLEM TO BE SOLVED: To protect a film on a printing surface without increasing the number of processes such as coating with an overprint varnish mixed with an ultraviolet absorber, and assuming that the damage due to ultraviolet rays is added. Thus, it is possible to provide a DNA ink excellent in light resistance without increasing the amount of DNA added. SOLUTION: A light-resistant DNA ink obtained by mixing at least one of an ultraviolet absorber, a light stabilizer, and an ultraviolet scattering agent in an ink containing DNA. In addition, the ink containing DNA contains a mixture of at least one of an ultraviolet absorber, a light stabilizer, and an ultraviolet scattering agent at a ratio of 0.1 to 20%. [Selection] Figure 1 |