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发明授权
CN100377236C 光信息记录介质 失效 - 权利终止 转让

光信息记录介质
摘要：
本发明提供C/N和再现耐久性都优秀且可无故障进行高密度记录的光记录介质。另外，提供照射短波长蓝色激光可进行信息的高密度且大容量记录和再现并具有感光度和反射率均优秀的记录特性的光信息记录介质。该光记录介质使用450nm以下的激光进行记录再现，在形成了轨道间距为200～400nm、槽深为50～150nm、槽半值宽度为90～200nm的凹槽的基板上，设置反射层、记录层等，且前述记录层含有在600～800nm和300～400nm分别具有极大吸收在1以上的有机物。该光信息记录介质，是基板上具有通过数值孔径(NA)0.7以上的透镜照射波长380～500nm的激光可记录信息的记录层的光信息记录介质，其特征在于，前述记录层是含有有机物的层，且前述基板的槽深是15～45nm，轨道间距为250～400nm，槽半值宽度为60～200nm，槽的倾斜角为40°～80°。
摘要（英）：

An optical recording medium that is excellent in both C/N and reproducing durability and is capable of carrying out high density recording with excellent sensitivity and reflectivity. The optical recording medium comprises a substrate having grooves with specified dimensions, and a recording layer comprising an organic substance having at least one maximum absorption peak in each of a range from 600 to 800 nm and a range from 300 to 400 nm. In another aspect, the optical information recording medium includes a recording layer comprising a certain organic substance and capable of recording information by irradiation with laser light having a wavelength of from 380 to 500 nm through a lens having an aperture (NA) of 0.7 or more, and a substrate having grooves with specified dimensions.

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