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1. 发明公开

EP1983515A4 OPTICAL INFORMATION RECORDING MEDIUM, MANUFACTURING METHOD THEREOF, AND RECORDING METHOD 审中-公开
标题翻译：光信息记录介质，工艺用于生产和记录过程
公开(公告)号：EP1983515A4
公开(公告)日：2009-05-06
申请号：EP07708277
申请日：2007-02-02
申请人： TAIYO YUDEN KK
发明人： MATSUDA ISAO , HARA FUMI
IPC分类号： G11B7/24 , G11B7/24035 , G11B7/24079 , G11B7/24085 , G11B7/244 , G11B7/246 , G11B7/2467 , G11B7/247 , G11B7/2472 , G11B7/249 , G11B7/2495 , G11B7/258 , G11B7/259
CPC分类号： G11B7/266 , G11B7/24035 , G11B7/24079 , G11B7/24085 , G11B7/246 , G11B7/2467 , G11B7/2472 , G11B7/2495 , G11B7/259 , G11B2007/24612
摘要： An object of the present invention is to provide an optical information recording medium suited for high-density and high-speed recording using a recording wavelength of 360 to 450 nm, in particular, around 400 nm (for example, 405 nm) and its recording method. The present invention is based not on a conventional High to Low method but on a Low to High method and, when the reflectance of the pit is higher than that of the non-pit area, the maximum film thickness of the recording layer at the track area where the pits are arranged is in the range from 25 to 60 nm and the maximum film thickness of the recording layer at the area adjacent to the track area is in the range of 5 to 30 nm, a satisfactory push-pull signal can be obtained. Further, the film thickness of the reflecting layer is preferably set in the range from 120 to 180 nm, and groove width of the reflection layer is preferably set in the range from 85 to 150 nm.

2. 发明公开

EP1533797A4 OPTICAL INFORMATION RECORDING MEDIUM 审中-公开
标题翻译：选择信息SAUFZEICHNUNGSMEDIUM
公开(公告)号：EP1533797A4
公开(公告)日：2009-04-01
申请号：EP03795223
申请日：2003-08-14
申请人： TAIYO YUDEN KK
发明人： MATSUDA ISAO , HARA FUMI , HORIKOSHI SOICHI
IPC分类号： G11B7/007 , G11B7/013 , G11B7/24
CPC分类号： G11B7/24085 , G11B7/00745 , G11B7/24082
摘要： An optical information recording medium such as a DVD-R on which optical information can be recorded at high speed and at high density, in which the shape of wobbling land prepits (21) are optimized, in which the diffraction of the laser beam (9) at the prepit is made stronger to generate a favorable land prepit signal, and in which the recording pit RF read errors and land prepit read errors are both reduced. The invention makes the most of the effect of optimization of the shape and size of the land prepits, especially the relative sizes of the inner and outer projections (23, 25) of each prepits and the spot (9S) of the laser beam. The optical information recording medium is characterized in that the inner end (22) of the inner projection and the outer end (24) of the outer projection are located with the range of the diameter (E2) of the spot.
摘要翻译：一种光学信息记录介质，例如DVD-R，其上可以高速和高密度地记录光学信息，其中波形纹间表面预置凹坑（21）的形状被优化，其中激光束（9）的衍射）更强，以产生有利的平地预坑信号，并且其中记录坑RF读取误差和平地预坑读取误差都被减小。本发明充分利用了每个预制凹坑的内部和外部凸起（23,25）和激光束的光斑（9S）的相对大小，以优化凸起预制凹坑的形状和大小的优化效果。该光学信息记录介质的特征在于，内凸起的内端（22）和外凸起的外端（24）位于光斑直径（E2）的范围内。

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