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:
Sep. 26, 1989
Filed:
Sep. 01, 1988
Applicant:
Inventors:
Kenneth D Glanz, Appleton, WI (US);
Gerald C Bartman, New London, WI (US);
Assignee:
Appleton Papers Inc., Appleton, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M / ;
U.S. Cl.
CPC ...
503209 ; 427150 ; 428913 ; 503208 ; 503216 ; 503217 ; 503225 ;
Abstract
A novel thermally-responsive record material is disclosed which is resistant to image fade from one or more common external challenges including contact with common fats or oils, skin oil, carbonless solvents, plasticizers or high heat and humidity, such as in a 90.degree.F./90% humidity test. The heat-sensitive material of the invention contains a fade resistance imparting ascorbic acid ester of the formula ##STR1## where R.sup.1 is hydrogen or a straight chain or branched chain acyl group of from 9 to 22 carbons inclusive,