Method of manufacturing a data carrier which can be...

Details Method of manufacturing a data carrier which can be... Method of manufacturing a data carrier which can be...

G - Physics

03

C

117/23.5

G03C 1/74 (2006.01) C23C 14/08 (2006.01) G03C 1/705 (2006.01)

Patent

CA 1095782

A METHOD OF MANUFACTURING A DATA CARRIER WHICH CAN BE OPTICALLY READ, AND A DATA CARRIER OBTAINED BY SAID METHOD Abstract of the Disclosure The present invention relates to a method of manufacturing data carriers optically readable, which incorporates a phase during which a layer formed of decomposed oxides is produced from oxides by vaporisation under vacuum. This layer, locally heated by a recording beam modulated in on/off fashion, is locally reoxidized. The layer then has a transparency and refractive index which vary from the non-heated zones to the heated and reoxidized zones.

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