Optical recording disc

Details Optical recording disc Optical recording disc

2004-06-30

2009-08-11

Nguyen, Hoa T (Department: 2627)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

Reexamination Certificate

active

07573803

ABSTRACT:
An optical recording disc includes a substrate, a third dielectric layer, a light absorption layer, a second dielectric layer, a decomposition reaction layer containing platinum oxide as a primary component, a first dielectric layer, and a light transmission layer. The decomposition reaction layer has a thickness of 2 nm to 20 nm, and the optical recording disc is constituted so that when it is irradiated with a laser beam from the side of the light transmission layer, the platinum oxide contained in the decomposition reaction layer as a primary component is decomposed into platinum and oxygen. A bubble pit is formed in the decomposition reaction layer by thus generated oxygen gas, and fine particles of the noble metal precipitate into the bubble pit, thereby forming a recording mark in the decomposition reaction layer.

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