| 摘要 |
The present invention particularly relates to a fiduciary or similar document (1), such as a banknote, passport, or identification card of the type including a substrate (3) whereon security imprints are provided. It is essentially characterized in that said security prints include: - a first design (5), consisting of a perforated or non-perforated first ink color block print (50), - at least one second design (6), not identical to the first and consisting of a second ink print in the form of a line block or at least one color block, one of the two designs partially covering the other, - a copperplate print (7), covering at least the common surface of said first and second designs (5,6), such that: - the design (5) having the largest surface is visible to the naked eye, and the other design (6) is invisible to the naked eye, under natural or artificial lighting with specular reflection; - while said other design (6) becomes gradually visible to the naked eye under natural or artificial lighting in the form of a diffused light source. |
