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:
Jan. 09, 1979
Filed:
Jul. 08, 1977
Tsang J Chen, Rochester, NY (US);
Donald F McLaen, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A photographic element is disclosed having coated on a support a hydrophilic colloid layer containing an activator precursor and loaded polymer particles of from 0.02 to 0.2 micron in average diameter. The polymer particles consist essentially of a hydrophobic polymer of which at least 2 percent by weight is comprised of ionizable repeating units, at least half being cationically ionizable, and a hydrophobic developing agent present in a weight ratio to the polymer of from about 1:4 to 3:1. Silver halide is present in the hydrophilic colloid layer or in an adjacent layer, and the activator precursor is present in a concentration of from 1 to 4 equivalent for each mole of silver halide. The photographic element is capable of being thermally processed.