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US 2012/0267888 A1Published application
Methods for Securing Variable Indicia on Instant (Scratch-Off) Tickets
AssigneeScientific Games International, Inc.
InventorsWilliam F. Behm, Kenneth Earl Irwin, JR.
Life of this patent
Estimating the term…
Abstract
A security-enhanced document, such as an instant lottery ticket, includes a substrate. Indicia is provided on the substrate, and a scratch-off-coating (SOC) layer is applied over the indicia to maintain the indicia unreadable until removal of the SOC layer. The indicia is printed onto the substrate as pigmented particles. One or more opacity film layers may be provided over or under the pigmented particle indicia.
Claims40
A security-enhanced document, comprising:
- a substrate;
- indicia provided on said substrate;
- a Scratch-Off-Coating (SOC) layer applied over said indicia to maintain said indicia unreadable until removal of said SOC;
- and
- said indicia comprising pigmented particles applied to said substrate in a printing process.
2 more elements
A security-enhanced document, comprising:
- a substrate;
- indicia provided on said substrate;
- a SOC layer applied over said indicia to maintain said indicia unreadable until removal of said SOC;
- and
- one or more security layers made up substantially of nano sized particles between 1 to 100 nm in a printing process.
2 more elements
A security-enhanced document, comprising:
- a substrate;
- indicia provided on said substrate;
- a SOC layer applied over said indicia to maintain said indicia unreadable until removal of said SOC;
- said indicia is at least at 500 dpi resolution applied to said substrate;
- and
- said indicia printed sufficiently complex to preserve entropy against pin prick attacks while retaining or enhancing clarity of documents properly played by removal of the SOC layer.
3 more elements
Dependencies are inferred from the claim text.