Optical record medium, optical information processing...

Details Optical record medium, optical information processing... Optical record medium, optical information processing...

2006-01-17

2006-01-17

Chen, Tianjie (Department: 2652)

Dynamic information storage or retrieval

Systems having plural physically distinct independent tracks...

Having layered storage medium

Reexamination Certificate

active

06987721

ABSTRACT:
A first recording layer and a second recording layer among a plurality of recording layers have a recording film and a reflection control film composed of silver oxide, and the reflection control film is interposed between dielectric films. The reflection control film utilizes heat generated from the recording film by light irradiation, thereby forming a high-reflection region in a portion at a temperature equal to or higher than a threshold temperature for forming a high-reflection region. Thus, an optical loss in the portions other than a recording layer to be recorded/reproduced is reduced, whereby a light efficiency is enhanced.

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