Thales Dis France Sa

Gemalto Oy

Gemalto Sa

Thales Dis France Sas

Jarmo Nikkilä

Jean-Luc Lesur

Teemu Pohjola

Nina Larina

Maila Korhonen

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

The invention relates to an enhanced security feature for identification document. For that, the identification document comprises at least two constitution layers, a first specific coating () inside the document, between two constitution layers, said coating being able to be revealed under predetermined lighting conditions. It comprises also an assembly of micro-holes () provided through at least one of the layers, in order to make possible the revelation of the first specific coating under said predetermined conditions, said assembly of micro-holes, together with said coating to be revealed through micro-holes, drawing said security pattern.

Identification document comprising a security pattern

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Meudon, France

Jarmo Nikkilä