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:
Dec. 23, 2014
Filed:
Apr. 29, 2014
Mark Robert Fisher, Appleton, WI (US);
Fadi Selim Chakar, Appleton, WI (US);
Yves Defrenne, Appleton, WI (US);
Mark Robert Fisher, Appleton, WI (US);
Fadi Selim Chakar, Appleton, WI (US);
Yves Defrenne, Appleton, WI (US);
Appvion, Inc., Appleton, WI (US);
Abstract
The invention describes a thermally-responsive record material substantially free of aromatic isocyanate. The record material comprises a support having provided thereon a heat-sensitive composition comprising a substantially colorless dye precursor comprising a fluoran; and a developer material selected from the group consisting of 4,4'-diaminodiphenylsulfone and 3,3′-diaminodiphenylsulfone in combination with N-[(butylamino)carbonyl]-4-methylbenzene sulfonamide, which upon being heated react with said dye precursor to develop color, and including a binder material.