Loading patent…
AssigneeSony Corporation
InventorsOsamu Kawakubo, Toshiyuki Kashiwagi, Koichi Yasuda, Masahiko Kaneko
Estimating the term…
An optical recording medium is provided which achieves a higher recording capacity. This optical recording medium includes a base formed of thermoplastic resin which has a thickness ranging from between approximately 0.3 to 1.2 mm, a guide groove formed on the base, an information recording layer formed at least of a reflective film and an organic dye recording layer provided on the guide groove, and a light transmissive layer having a thickness ranging from between approximately 3 to 177 μm. In this optical recording medium, the unevenness Δt of the thickness of the light transmissive layer is set within the range of: Δt≦±5.26(λ/N.A.4)(μm) wherein N.A. represents a numerical aperture of an optical head device of the optical disk recording and/or reproducing apparatus and λ represents the wavelength of laser light utilized by the optical disk recording and/or reproducing apparatus.
An optical recording disk for storing data therein, said optical recording disk being adaptable for use with an optical disk recording and/or reproducing apparatus, the optical recording disk comprising:
An optical recording disk comprising:
An optical disk apparatus for recording information on or reproducing information from an optical recording disk having a base, a guide groove structure formed on said base, an information recording layer formed on said base, an information recording layer formed of at least an organic dye recording layer on said guide groove, and a light transmissive layer formed on top on the recording layer having a thickness of between approximately 3 to 177 μm, said optical disk apparatus comprising:
An optical recording disk for storing data therein, said optical recording disk being adaptable for use with an optical disk recording and/or reproducing apparatus, the optical recording disk comprising:
Dependencies are inferred from the claim text.