Optical information recording medium

Details Optical information recording medium Optical information recording medium

2006-08-22

2006-08-22

Neyzari, Ali (Department: 2656)

Dynamic information storage or retrieval

Storage medium structure

Specified material

C369S286000, C369S094000, C369S275100, C428S064400

Reexamination Certificate

active

07095706

ABSTRACT:
An optical information recording medium containing a first information substrate including a first substrate having a guide groove thereon, a first recording layer including a dye, overlying the first substrate and a first reflective layer being a semi-transmittance layer, overlying the first recording layer, a second information substrate comprising, a second substrate having a guide groove thereon, a second recording layer comprising a dye, overlying the second substrate, a second reflective layer being a semi-transmittance layer, located overlying the second recording layer and a light transmittance protective layer overlying the second reflective layer and a transparent intermediate layer. Further, the following relationships (1) and (2) are satisfied: (1) 0.3≦nd/λ≦0.7, wherein n represents refractive index in the complex refractive index n-ik of the light transmittance protective layer, d represents a thickness thereof, and λ is at least one of a recording wavelength and a playback wavelength, (2) k≦0.05, wherein k represents absorption index of the light transmittance protective layer of the complex refractive index n-ik.

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Patent Abstracts of Japan, vol. 2000, No. 14, JP 2000 311384 A, published Nov. 7, 2000.
European Search Report dated Jun. 21, 2005.

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