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. 20, 1983
Filed:
Jul. 09, 1982
Applicant:
Inventors:
Assignee:
Oji Paper Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B41M / ;
U.S. Cl.
CPC ...
282 275 ; 427150 ; 427151 ; 428328 ; 428537 ;
Abstract
A pressure-sensitive record color-developing sheet capable of developing thereon clear color images having an excellent light fastness, comprises a substrate layer and a color-developing layer containing an acid color-developing agent, for example, activated clay or aluminum silicate, a binder and a color development-promoting, color fading-preventing agent consisting of a thiourea compound and a zinc compound selected from zinc oxide, zinc hydroxide, and mixtures thereof.