Electronic article surveillance markers for optically...

G - Physics – 08 – B

Patent

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G08B 13/24 (2006.01)

Patent

CA 2362679

An electronic article surveillance marker is disclosed, including a signal producing layer and a signal blocking layer. The signal producing layer includes flux collection portions joined by magnetic switching sections each having a major axis A, and the signal blocking layer comprises signal blocking elements overlying each flux collection portion. The elements each have at least one boundary that overlies a magnetic switching section and preferably has a tangent T that is not perpendicular to the major axis A of that magnetic switching section. Methods of making the inventive marker are also disclosed.

La présente invention concerne un marqueur de surveillance d'articles électroniques, comprenant une couche de production de signaux et une couche de blocage de signaux. La couche de production de signaux comporte des portions de recueil de flux reliées par des sections à commutation magnétique présentant chacune un grand axe A, et la couche de blocage de signaux comprennent des éléments bloqueurs de signaux recouvrant chaque portion de recueil de flux. Chacun des éléments présente au moins une limite qui recouvre une section de commutation magnétique et possède, de préférence, une tangente T qui n'est pas perpendiculaire au grand axe A de ladite section de commutation magnétique. L'invention concerne également un procédé de fabrication d'un tel marqueur.

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