| 摘要 |
PROBLEM TO BE SOLVED: To form a pattern for deciding a truth or a falsehood emitting a light by irradiating it with ultraviolet ray and to satisfactorily print an ink so as not to repel an ink or to change a density. SOLUTION: The ink jet printing medium 10 capable of printing predetermined information by ink jet printing and having a truth or falsehood deciding pattern for emitting a light by irradiating it with ultraviolet ray comprises a base material 11, a receiving layer 12 provided on an upper layer of the material 11 and having ink jet ink receiving suitability, and a deciding layer 13 forming a pattern for deciding the truth or falsehood by white, pale colored or transparent ink, invisible under a white light and visibly emitting a light by irradiating it with the ultraviolet ray and having ink jet ink receiving suitability. |
