Method of writing data on a master substrate for optical...

Details Method of writing data on a master substrate for optical... Method of writing data on a master substrate for optical...

G - Physics

11

B

G11B 7/006 (2006.01) G11B 7/125 (2006.01) G11B 7/26 (2006.01)

Patent

CA 2584093

The present invention relates to a method of writing data on a master substrate (10) for optical recording, the master substrate comprising a recording layer (12) and a substrate layer (14), and the recording layer comprising a phase-change material the phase of which can be transferred from crystalline to amorphous by projecting light on the recording 5 layer, the method comprising the steps of: writing a first amorphous mark (32) from a plurality of amorphous marks on the master substrate by at least one write pulse, and providing a cooling gap before the next amorphous mark (32) will be written.

La présente invention concerne un procédé pour enregistrer des données sur un substrat maître (10) à des fins d'enregistrement optique, le substrat maître comprenant une couche d'enregistrement (12) et une couche de substrat (14), la couche d'enregistrement comprenant un matériau à changement de phase dont on peut faire passer la phase d'un état cristallin à un état amorphe par la projection d'une lumière sur la couche d'enregistrement (5), le procédé comprenant les stades d'écriture d'une première marque amorphe (32) faisant partie d'une pluralité de marques amorphes sur le substrat maître au moyen d'au moins une impulsion d'écriture, et de formation d'un intervalle de refroidissement avant l'écriture de la première marque amorphe (32).

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