发明名称 |
Recording medium and apparatus and method for manufacturing the same |
摘要 |
<p>A recording medium includes pairs of groove tracks and land tracks having periodically formed bent portion provided side by side on a substrate, a plurality of land prepits (14) previously formed on the land tracks and carrying information about the groove tracks, and a recording layer formed on at least the groove tracks and the land tracks. The land prepits have a radius of mean curvature smaller than a radius of mean curvature of sides of the groove tracks in land-prepit absent regions of the land prepits and are defined by curved surfaces continuously extending from the sides of the groove tracks. Those sides of the groove tracks which face the continuous curved surfaces of the land prepits are curved surfaces that stricture the groove tracks. The depth of the land prepit is larger than that of the groove track. <IMAGE></p> |
申请公布号 |
EP1184852(A2) |
申请公布日期 |
2002.03.06 |
申请号 |
EP20010119267 |
申请日期 |
2001.08.09 |
申请人 |
PIONEER CORPORATION |
发明人 |
KATO, MASAHIRO;MURAMATSU, EIJI;YAMAGUCHI, ATSUSHI;TANIGUCHI, SHOJI;OSHIMA, SEIRO;MATSUKAWA, MAKOTO;TAGIRI, TAKAO;YAMATO, KAZUHIRO;YONE, TATSUHIRO |
分类号 |
G11B7/24;G11B7/007;G11B7/013;G11B7/26;G11B27/19;G11B27/24;G11B27/30;(IPC1-7):G11B7/013 |
主分类号 |
G11B7/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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