| 摘要 |
The invention relates to a document (10) which includes a substrate (12) and a security element (20) including first (22A) and second (22B) patterns supported by the substrate (12), the substrate (12) also including a translucent or transparent area (14), with the first and second patterns (22A, 22B) at least partially extending therein. The first and second patterns (22A, 22B) are suitable for producing, inside the transparent area (14), at least first and second colours respectively when observing the document (10) by reflection and for switching said first and second colours when observing the document (10) being sent. |
