| 摘要 |
The invention relates to a multilayer security element having a metal layer ( 20 ) into which are introduced, by a laser beam, identifiers ( 16 ) in the form of patterns, letters, numbers and/or images, the metal layer ( 20 ) being disposed between two translucent coating layers ( 26, 28 ). The identifiers ( 16 ) in the metal layer ( 20 ) display a watermark effect in which they appear, when viewed in transmitted light, as a positive image, and when viewed in reflected light, as a negative image. |
