The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 2024
Filed:
Aug. 20, 2021
Appvion, Llc, Appleton, WI (US);
Mark R. Fisher, Appleton, WI (US);
Appvion, LLC, Appleton, WI (US);
Abstract
We disclose specialized direct thermal recording media that are both phenol-free and water-dispersible. The thermally responsive layer of such media includes a leuco dye and an acidic developer. To avoid image fade and image formation problems associated with certain demanding environmental storage conditions, the developer is not only phenol-free but also a derivative of N,N'-diphenylurea. The thermal recording medium also includes a base coat between the substrate and the thermally responsive layer, the base coat containing a non-water-soluble binder, and a top coat carried by the substrate such that the thermally responsive layer is between the top coat and the substrate.