发明名称 Recyclable instant scratch-off lottery ticket with improved security to prevent unauthorized detection of lottery indicia
摘要 A piece of printed material has preprinted, hidden data and includes a structure which prevents premature or unauthorized revealing of the hidden lottery or gaming data. For example, an instant scratch-off lottery ticket according to the invention includes a substrate, an ink layer disposed on the substrate, the ink layer including hidden lottery data. An ink-receptive layer is provided between the ink layer and the substrate and includes a first security mechanism for preventing unauthorized detection of the hidden data. A second security mechanism is disposed between the ink-receptive layer and the substrate which further prevents unauthorized detection of the lottery data.
申请公布号 US5681065(A) 申请公布日期 1997.10.28
申请号 US19940354893 申请日期 1994.12.09
申请人 WEBCRAFT TECHNOLOGIES, INC. 发明人 RUA, JR., LOUIS;TARARUJ, CHRISTOPHER;MARTIN, STEPHEN
分类号 B42D15/00;(IPC1-7):B42D15/00 主分类号 B42D15/00
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