US 11,807,028 B1
Scratch-off document altering and copying countermeasures
Joseph Brandimore, Lakeland, FL (US); Kenneth E. Irwin, Jr., Dawsonville, GA (US); and Amy Kathleen Pettis, Lakeland, FL (US)
Assigned to IGT Global Solutions Corporation, Providence, RI (US)
Filed by IGT Global Solutions Corporation, Providence, RI (US)
Filed on Dec. 13, 2022, as Appl. No. 18/065,295.
Int. Cl. B42D 25/27 (2014.01); A63F 3/06 (2006.01); B42D 25/387 (2014.01)
CPC B42D 25/27 (2014.10) [A63F 3/065 (2013.01); A63F 3/0665 (2013.01); B42D 25/387 (2014.10); A63F 3/0655 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A lottery ticket comprising:
a substrate;
a background printed on a first area of the substrate;
variable indica printed on a second area of the substrate;
void pantograph printed on the first area of the substrate; and
a scratch-off coating covering the variable indicia on the second area of the substrate, at least a portion of the void pantograph on the first area of the substrate, and at least a portion of the background on the first area of the substrate,
wherein the void pantograph comprises a Benday pattern, the void pantograph being printed such that the Benday pattern is not apparent when viewing the first area of the substrate after the scratch-off coating is removed from the first area of the substrate, and wherein the void pantograph is configured such that in a photocopy made of the first area of the substrate after the scratch-off coating is removed from the first area of the substrate, the Benday pattern is apparent.