| 摘要 |
PROBLEM TO BE SOLVED: To provide an invisible image capable of being visually confirmed with transmitted light, in a field of a bank note which is a security printed matter requiring a forgery prevention effect, and a valuable printed matter such as a passport, a valuable paper, an identification card, a card and a traffic ticket.SOLUTION: In an invisible image region provided on a translucent substrate, a first invisible image appears due to a difference between the quantities of transmitted light of the substrate by transmission of the light, and a second invisible image or a second invisible image appears by being overlapped with a discrimination implement. |
