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:
Mar. 12, 1996
Filed:
Sep. 30, 1994
Ann Verbeeck, Begijnendijk, BE;
Kris Viaene, Bonheiden, BE;
Agfa-Gevaert, N.V., Mortsel, BE;
Abstract
A process is disclosed for the preparation of a hybrid direct positive silver halide emulsion comprising the steps of (1) forming an essentially cubic host grain emulsion consisting of silver bromide or silver iodobromide, with a iodide content between 0 and 10 mole %, by a balanced double jet, (2) depositing epitaxially on the corners of said formed essentially cubic host grains a silver iodide crystallographic phase wherein said silver iodide phase contains at most 5 % of the total crystal silver halide, either by precipitating a silver chloride epitaxial phase and converting it to silver iodide, or by adding silver ions and an organic iodide releaser. The organic iodide releaser is preferably mono-iodoacetic acid.