发明名称 |
Limited Play Optical Discs |
摘要 |
An optical disc having machine-readable, information encoding features includes a coating comprising a tellurapyrylium dye irreversibly bleachable by light. The dye, once bleached, is operative to change the index of refraction of the dye to inhibit reading of the information encoding features.
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申请公布号 |
US2009075015(A1) |
申请公布日期 |
2009.03.19 |
申请号 |
US20080175839 |
申请日期 |
2008.07.18 |
申请人 |
DETTY MICHAEL R;LARSON LIEF C |
发明人 |
DETTY MICHAEL R.;LARSON LIEF C. |
分类号 |
B32B3/02;B05D3/12;B05D5/06;B32B9/00;G11B7/00 |
主分类号 |
B32B3/02 |
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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