Optical information recording medium

Details Optical information recording medium Optical information recording medium

2005-03-29

2005-03-29

Heinz, A. J. (Department: 2653)

Dynamic optical information storage or retrieval

Optical storage medium structure

C369S277000

Reexamination Certificate

active

06874156

ABSTRACT:
An optical information recording medium recordable at a high density two times or more higher than that of currently-used CD-Rs by optimally determining the thicknesses of a recording layer and a reflecting layer. The optical information recording medium comprises the recording layer formed on a transparent substrate having a spiral pregroove formed thereon, wherein a track pitch Tp of the pregroove is 1.0 μm≦Tp≦1.2 μm and a thickness Dg of the recording layer on the pregroove is 80 nm≦Dg≦120 nm.

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Japanese Patent Office Action, titled “Refusing Reason Notice” (1 page), mailed on Dec. 9, 2003 for a counterpart foreign application, and its English translation.

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