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:
May. 26, 1998
Filed:
Apr. 22, 1997
Applicant:
Inventors:
Assignee:
Felix Schoeller jr. Foto- und Spezialpapiere GmbH & Co. KG, Osnabruck, DE;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; G03C / ;
U.S. Cl.
CPC ...
428331 ; 428339 ; 428341 ; 428342 ; 4283 / ; 428404 ; 428451 ; 428452 ; 430523 ; 430529 ;
Abstract
The invention relates to a photographic support material with a backlayer and to a coating composition for producing this backlayer. The layer is distinguished by excellent writing properties with pencils and is free of contaminations by aged developing baths. It is composed of carboxylated acrylate copolymer, organic polyacid, coarse-grained silica, thickener and, preferably, colloidal aluminium-modified silica.