Optical information recording medium

Details Optical information recording medium Optical information recording medium

2011-01-11

2011-01-11

Mulvaney, Elizabeth (Department: 1785)

Stock material or miscellaneous articles

Circular sheet or circular blank

C428S064400, C428S064800, C430S270140

Reexamination Certificate

active

07867595

ABSTRACT:
An optical information recording medium is provided having a superior jitter property even when an organic substance is used for a recording layer. The optical information recording medium has a substrate having a penetrating hole in a central portion thereof and a spiral pre-groove provided in one surface of the substrate, a reflection layer provided on the surface of the substrate in which the pre-groove is provided, a recording layer which is provided on the reflection layer and which is composed of an organic substance including a dye, and a light transmissive cover layer provided on the recording layer. In the optical information recording medium, the cover layer has an elastic modulus of 40 MPa or less at 25° C. in an interface region facing the recording layer.

REFERENCES:
patent: 6967048 (2005-11-01), Saito et al.
patent: 7005174 (2006-02-01), Yamasaki et al.
patent: 2003-36562 (2003-02-01), None
patent: 2003-45079 (2003-02-01), None

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