Irreversible optical recording medium by formation of...

Details Irreversible optical recording medium by formation of... Irreversible optical recording medium by formation of...

2011-03-08

2011-03-08

Blouin, Mark (Department: 2627)

Dynamic information storage or retrieval

Storage medium structure

Layered

Reexamination Certificate

active

07903536

ABSTRACT:
An irreversible optical recording medium comprises at least an active layer presenting a rear face and a front face designed to receive at least an optical writing radiation. The optical writing radiation enables gas bubbles forming write marks to be formed locally in said active layer by means of a layer forming a gas source arranged on the rear face of the active layer. The layer forming the gas source moreover has a thickness less than or equal to 100 nm so as to limit the height of the bubbles formed in the active layer and therefore to improve tracking when read operations are performed. The layer forming the gas source is preferably made of carbon-doped hydrogenated amorphous silicon oxide.

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