发明名称 |
Optical recording information medium |
摘要 |
An optical recording medium comprising a recording and a metal reflective layers on a transparent substrate having a groove, wherein the recording layer comprises an azaporphyrin metal complex dye with 1 to 4 meso-nitrogen atoms as a main component; recording and/or reproduction can be conducted using laser beams with wavelengths of lambd1 and lambd2 which is shorter than lambd1; a refractive index n of the recording layer is 2.0 or more at lambd1 and 1.8 or more at lambd2 as well as an attenuation coefficient k of the layer is 0.04 to 0.20 at lambd1 and 0.30 or less at lambd2; and the groove has a pitch of 0.70 to 0.85 mum, a half-value width of 0.20 to 0.35 mum and an inclination angle of 45 to 65°:
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申请公布号 |
US6576321(B2) |
申请公布日期 |
2003.06.10 |
申请号 |
US20010955036 |
申请日期 |
2001.09.19 |
申请人 |
MITSUI CHEMICALS, INC. |
发明人 |
MIHARA NORIHIKO;KOIKE TADASHI |
分类号 |
G11B7/0045;G11B7/248;G11B7/249;G11B7/2492;G11B7/253;G11B7/2534;G11B7/258;G11B7/2595;(IPC1-7):B32B3/02 |
主分类号 |
G11B7/0045 |
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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