Recording medium and recording medium master, and

专利名称：Recording medium and recording medium

master, and method of manufacturingrecording medium

发明人：Endoh, Sohmei,Satoh, Manabu,Arima,

Mitsuo,Shimizu, Jun,Ikeda, Etsuro,Ozawa,Hirotaka,Suzuki, Akitoshi,Takakuwa,Masayuki

申请号：EP01119061.8申请日：20010807公开号：EP1184851A3公开日：20071024

专利附图：

摘要：A recording medium and a recoding medium master, and a method ofmanufacturing the recording medium which comply with the standard of

recording/reproducing characteristic established in the MD standard while enablingprecise discrimination of the pit track and groove track and optical detection of the pitsby optical pickup and the like are provided. Pits and grooves are arranged on a surface ofa disc-shaped substrate so as to form a spiral-shaped track. The track pitch of the pits iswider than that of the grooves and the ratio is from 1.00 exclusive to 1.13 inclusive. It ispreferable that the track pitch of the grooves is from 1.50 µm inclusive to 1.70 µmexclusive. The width of the pits and grooves in the radial direction of the substrate is thesame.

申请人：Sony Corporation

地址：7-35, Kitashinagawa 6-chome Shinagawa-ku Tokyo JP

国籍：JP

代理机构：Müller - Hoffmann & Partner

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