Optical recording medium

Details Optical recording medium Optical recording medium

G - Physics

11

B

G11B 7/24 (2006.01) G11B 7/258 (2006.01) G11B 11/105 (2006.01) G11B 7/26 (2006.01)

Patent

CA 2401389

According to the present invention, there is provided an optical recording medium including at least an information recording layer and a reflective film in which the reflective film is comprised of an AgCu alloy thin film containing Cu the content of which is greater than or equal to 3.0 [atomic %] and less than or equal to 6.5 [atomic %] . Thus, the optical recording medium can be made inexpensive and weather resistance of the optical recording medium can be improved, thereby making it possible to avoid characteristics of the optical recording medium from being deteriorated even after it has been stored for a long time.

L'invention concerne un support d'enregistrement optique comportant au moins une couche d'enregistrement d'informations et une couche réfléchissante, laquelle est constituée d'un film mince en alliage Ag-Cu qui renferme entre 3 et 6,5 % d'atomes de Cu. Un tel support offre les avantages suivants: coût de production réduit, résistance aux intempéries améliorée, absence de dégradation des caractéristiques même après un stockage à long terme.

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