Thales Dis France Sas

Thales Dis France Sa

Nina Larina

Jean-Luc Lesur

Jarmo Nikkilä

Stefan Egli

Jarmo Nikkila

Yannick Gourden

Jérémy Renouard

Sebastien Subra

Provided is a data carrier () extending along an extension direction (E) comprises at least one first colour element (), wherein the first colour element () exhibits an appearance under a first illumination and/or exhibits an appearance under a second illumination being different from the first illumination, at least one second colour element (), wherein the second colour element () exhibits an appearance under the first illumination being different from the appearance of the first colour element () under the first illumination and/or exhibits an appearance under the second illumination that is different from the appearance of the first colour element () under the second illumination.

Personalizable multi-colour security features

The present invention relates generally to a data carrier and a method for making the data carrier. More particularly, this invention relates to color laser marking of article, especially security documents. The present invention proposes a security document comprising a multilayers assembly instead of a single color component mixture in a layer. The multilayer assembly comprises at least two laser sensitive layer. Each layer comprises at least one coloring agent component. The order arrangement of the multilayers of bleachable coloring agent component is made so that each layer behaves as a wavelength filter configured to selectively transmit longer wavelengths and block or attenuate shorter wavelengths while protecting the underneath coloring agent component from bleaching interference.

Color laser marking of security document and a method for producing such security document

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Meudon, France

Nina Larina