System for applying markings to optical media

G - Physics – 11 – B

Patent

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G11B 23/40 (2006.01) G03F 7/00 (2006.01) G03F 7/16 (2006.01) G03F 7/20 (2006.01) G11B 7/252 (2006.01) G11B 7/26 (2006.01) G01N 21/956 (2006.01)

Patent

CA 2499640

A system for recording a marking in the readout area of an optical media comprises a marking that does not interfere or substantially interfere, with the readout of data from the optical media. The marking is formed in the photosensitive coating (100) that is applied to the optical media (10), and then cured with a first light. A image of the marking is formed by exposing the coating a second light, having substantially separate band of wavelengths from the first light.

L'invention concerne un système pour enregistrer une marque dans la zone de lecture d'un support optique, ladite marque ne gênant pas, ou sensiblement pas, la lecture de données du support optique. Le système de l'invention est favorable aux exigences de production commerciale. Des marques peuvent contenir un contenu si l'utilisateur du système le souhaite, notamment un texte, des images, ou d'autres articles. La marque est formée dans un revêtement photosensible qui est appliqué sur le support optique, puis traité par un premier éclairage. Un second éclairage, présentant une bande de longueurs d'ondes sensiblement différente du premier éclairage, est utilisé pour former une image de la marque dans le revêtement. Ledit revêtement résiste à de nombreuses influences externes, tels que les conditions environnementales ambiantes, et l'usure environnementale.

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