| 发明名称 |
METHOD FOR DRAWING FIGURE AND OPTICAL DISK DEVICE |
| 摘要 |
PROBLEM TO BE SOLVED: To record a visible information on an optical disk. SOLUTION: Figures 710 and 720 are drawn which are visible as an aggregate of element regions which vary by 5% or greater in the averaged refractive index per the area of 0.01 mm×0.01 mm than a background region for any one of visible wavelengths. |
| 申请公布号 |
JP2003016649(A) |
申请公布日期 |
2003.01.17 |
| 申请号 |
JP20010195364 |
申请日期 |
2001.06.27 |
| 申请人 |
HITACHI LTD |
发明人 |
HIROTSUNE AKEMI;NISHI YOSHIKO;ANZAI YUMIKO |
| 分类号 |
G11B7/24;G11B7/0037;G11B7/0045;G11B7/007;G11B20/12;G11B23/38;G11B23/40 |
主分类号 |
G11B7/24 |
| 代理机构 |
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代理人 |
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| 主权项 |
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