US Patent Issued to Xerox on Feb. 4 for "Security printing using mixed spot sizes in stochastic or frequency modulated halftone images" (New York Inventors)

ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,219,110, issued on Feb. 4, was assigned to Xerox Corp. (Norwalk, Conn.).

"Security printing using mixed spot sizes in stochastic or frequency modulated halftone images" was invented by Chu-heng Liu (Penfield, N.Y.), Jorge A. Alvarez (Webster, N.Y.), Douglas L. Herrmann (Webster, N.Y.), Jason Matthew LeFevre (Penfield, N.Y.) and Seemit Praharaj (Webster, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and systems for securely rendering a security feature with image data to be printed, can involve providing within the image data, data relating to a group of spots, and within the image data, mixing spots of two or more spot sizes among the group...