Optical information recording medium

Details Optical information recording medium Optical information recording medium

2006-08-22

2006-08-22

Heinz, A. J. (Department: 2627)

Dynamic optical information storage or retrieval

Optical storage medium structure

Reexamination Certificate

active

07096479

ABSTRACT:
An optical information recording medium10is composed of at least a reflective layer2,a first protective layer3,a phase-change type optical recording layer4and a second protective layer5being sequentially laminated on a substrate1.The optical information recording medium10is conducted to record information by changing a phase of the phase-change type optical recording layer4by irradiating light from the second protective layer5side. The phase-change type optical recording layer4further contains at least Ti, In, Ge, Sb and Te. When each content amount of the Ti, In, Ge, Sb and Te is defined as v, w, x, y and z in atomic percent respectively, each content amount of v, w, x, y and z in atomic percent satisfies following relations: 0.3≦v≦4, 0.3≦w≦3, 3.4≦x≦14.5, 2.1≦y/z≦4 and 98.8≦v+w+x+y+z≦100.≦.

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