Rewritable optical recording medium and manufacturing method and apparatus therefor
AssigneePioneer Corporation
InventorsYoshio Sasaki, Toshihiko Maruyama, Eiji Muramatsu, Masahiro Kato, Seiro Oshima, Takao Tagiri
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Abstract
A rewritable optical recording medium includes a segmented groove area in which the groove track is segmented along a rotating direction of the recording medium by groove non-forming portions to form a plurality of groove portions; and a continuous groove area in which a continuous groove is formed, the continuous groove having a groove width smaller than a groove width in the segmented groove area.
Claims5
A rewritable optical recording medium having a substrate, land tracks and groove tracks for recording a data signal, the land tracks and the groove tracks being formed in the substrate, and each of the groove tracks being positioned between neighboring ones of the land tracks, respectively, comprising:
- a segmented groove area in which the groove track is segmented along a rotating direction of said optical recording medium to form a plurality of groove portions;
- and
- a continuous groove area in which a continuous groove track is formed, said continuous groove track having a groove width smaller than groove widths of the plurality of groove portions in said segmented groove area.
Dependencies are inferred from the claim text.