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. 25, 1999
Filed:
Oct. 21, 1997
Alfred P Marchetti, Penfield, NY (US);
Samuel Chen, Penfield, NY (US);
Jeri L Mount, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A high chloride {100} tabular grain emulsion is disclosed containing a non-uniform distribution of iodide to increase sensitivity. A high percentage of the {100} tabular grains have one or more crystal lattice dislocations lines at sites of maximum iodide concentration. The dislocation lines are distinctive in that they are oriented parallel to at least one edge of the {100} tabular grains. The mechanism for producing the dislocation lines relies upon a relatively slow rate of addition of iodide ion, improving the reproducibility of emulsion properties in manufacture. Relatively low overall levels of iodide are employed, allowing rapid rates of development.