Recyclable instant scratch-off lottery ticket with improved security to prevent unauthorized detection of lottery indicia
US5681065A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1994 |
| Grant date | Oct 28, 1997 |
| Priority date | — |
| Expiry date | Dec 9, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42D15/00
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.