发明名称 |
Optical information recording medium |
摘要 |
<p>An optical information recording medium including a substrate in which at least one of a groove and a pit is formed; a recording layer located overlying the substrate and including a dye; and a reflection layer located overlying the recording layer, wherein the optical information recording medium has an absorbance curve with an absorbance L of from 10 to 40 % against light having a wavelength lambda of from 645 nm to 670 nm, a ratio (Lmax/Lmin) of a maximum absorbance Lmax of the absorbance curve to a minimum absorbance Lmin of from 1.0 to 2.0 at the wavelength range of from 645 nm to 670 nm, and a reflectance of from 45 to 85 % against the light having a wavelength lambda of from 645 nm to 670 nm. <IMAGE></p> |
申请公布号 |
EP1308943(A2) |
申请公布日期 |
2003.05.07 |
申请号 |
EP20020023911 |
申请日期 |
2002.10.24 |
申请人 |
RICOH COMPANY LTD. |
发明人 |
YASHIRO, TOHRU;NOGUCHI, SOH;TOMURA, TATSUYA |
分类号 |
G11B7/0045;G11B7/007;G11B7/24076;G11B7/24079;G11B7/248;(IPC1-7):G11B7/24 |
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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