US 11,772,406 B2
Printable unclonable function patterns
Warren Jackson, San Francisco, CA (US); Janos Veres, San Jose, CA (US); Yujie Zhu, Mississauga (CA); Jennifer L. Belelie, Oakviille (CA); Robert A. Street, Palo Alto, CA (US); Ping Mei, San Jose, CA (US); and Kent Evans, Cupertino, CA (US)
Assigned to XEROX CORPORATION, Norwalk, CT (US)
Filed by PALO ALTO RESEARCH CENTER INCORPORATED, Palo Alto, CA (US); and XEROX CORPORATION, Norwalk, CT (US)
Filed on Jan. 25, 2021, as Appl. No. 17/157,652.
Prior Publication US 2022/0234378 A1, Jul. 28, 2022
Int. Cl. G06K 19/06 (2006.01); B42D 25/29 (2014.01); B29C 64/118 (2017.01); B29C 64/153 (2017.01); B42D 25/405 (2014.01); B42D 25/378 (2014.01); B33Y 80/00 (2015.01); B33Y 30/00 (2015.01); B33Y 70/10 (2020.01)
CPC B42D 25/29 (2014.10) [B29C 64/118 (2017.08); B29C 64/153 (2017.08); B42D 25/378 (2014.10); B42D 25/405 (2014.10); B33Y 30/00 (2014.12); B33Y 70/10 (2020.01); B33Y 80/00 (2014.12)] 21 Claims
OG exemplary drawing
 
1. A print feedstock having a base material in a first layer and a marker material in a second layer, the base material and the marker material having different physical properties, the marker material selected to interact with the base material to cause the base material to form a random, detectable, pattern in the first layer.