ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,545,045, issued on Feb. 10, was assigned to Appvion LLC (Appleton, Wis.).
"Direct thermal recording media with diarylurea combinations for oil resistance" was invented by Mark R. Fisher (Appleton, Wis.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Non-phenolic direct thermal recording media have a thermally responsive layer containing a leuco dye and a plurality of diarylurea acidic developers selected to improve the quality and readability of the image produced in such media, particularly after being contacted with oils such as vegetable oil. The diarylurea developers preferably include, or consist essentially of, or consist of, N,N'-diphenylurea ("DP...