Oberthur Technologies

Aurélie Barbotin

Olivier Bosquet

François Launay

Jacques Venambre

Denis Vere

Denis Guerard

Yann Limelette

An imprint () that represents a predefined pattern on an article. Article () comprises a body () made of a first material with a first thermal expansion coefficient (C). The method comprises a step of incorporating a piece () in body () made of a second material with a second thermal expansion coefficient (C), lower than the first coefficient, a step of heating article () to a predefined temperature to induce expansion of the materials, and then a step of cooling article () to induce shrinkage of the materials, generating a mechanicals stress that deforms article (). Piece () is shaped so that the deformation generated corresponds to predefined pattern ().

Method for making an imprint on an article

A smart card comprises a magnetic antenna consisting of first () and second () coils. The card embossing area () is arranged outside of the first coil () and inside the second coil (). A smart card producing method is also disclosed.

Smart card producing method and a smart card in particular provided with a magnetic antenna

Growing community of inventors

Noyal sur Vilaine, France

Aurélie Barbotin