Optical information recording medium and its manufacturing...

Details Optical information recording medium and its manufacturing... Optical information recording medium and its manufacturing...

2005-08-23

2005-08-23

Mulvaney, Elizabeth (Department: 1774)

Stock material or miscellaneous articles

Circular sheet or circular blank

C428S064400, C428S064500, C428S064600, C430S270130

Reexamination Certificate

active

06933031

ABSTRACT:
An optical information recording medium of the present invention includes a protective layer; an interface layer; and a recording layer, the optical characteristics of which are changed reversibly when irradiated by a laser beam, layered in this order on a substrate. The protective layer contains at least Zn, S, and Si atoms, and an atomic composition ratio of O to Si is at least 0 and smaller than 2. A refractive index of the interface layer is smaller than a refractive index of the protective layer.

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