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. 27, 1983
Filed:
Jan. 29, 1982
Applicant:
Inventors:
Akira Hasegawa, Tokyo, JP;
Ippei Shimizu, Tokyo, JP;
Kaneko Toshio, Iwaki, JP;
Sumio Miyake, Iwaki, JP;
Assignee:
Jujo Paper Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M / ; B41M / ;
U.S. Cl.
CPC ...
282 275 ; 428327 ; 428328 ; 428329 ; 428330 ; 428331 ; 428341 ; 428342 ;
Abstract
A color developing sheet for pressure-sensitive recording sheet containing in its color developing layer, an organic coreactant (color developing agent), calcium carbonate and styrene-butadiene copolymer latex or modified styrene-butadiene copolymer latex of an average particle size of less than 0.08.mu. whereby a color developing sheet having excellent water resistance, very improved mark formation, improved printability, high surface strength, rapid setting of ink, etc. is provided.