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:
Sep. 16, 1997
Filed:
May. 28, 1996
Mark Edward Irving, Rochester, NY (US);
Donald Lee Black, Webster, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
An emulsion of enhanced photographic sensitivity and reduced contrast is disclosed containing high bromide tabular grains having a non-uniform iodide distribution, including (a) a peripheral zone extending inwardly from edges and corners of the tabular grains and providing (i) a maximum iodide concentration along the edges and (ii) a lower iodide concentration at the corners than elsewhere along the edges, (b) a central zone providing a minimum iodide concentration and accounting for at least 35 percent of total silver forming the tabular grains and, (c) extending from the central zone to the peripheral zone, an intermediate zone (i) containing a higher iodide concentration than the central zone, ranging from greater than 2 to 10 mole percent, based on silver forming the intermediate zone, and (ii) accounting for from 5 to 35 percent of total silver forming the tabular grains.