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. 14, 1982
Filed:
Apr. 14, 1981
Applicant:
Inventors:
Stuart C Rennison, Hadleigh, GB;
Ronald J Stacey, Colchester, GB;
Assignee:
Bedford Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430290 ; 430152 ; 430176 ; 430191 ; 430196 ;
Abstract
Process for forming a vesicular image utilizing a vesicular recording material having an imaging layer which includes a defined sulphone and/or sulphonamide additive in an amount of 1 to 100% by weight based upon the weight of a polymeric component of the plastics vehicle. The additive provides improved image density and a back-appearing image.