Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1990-10-23
1993-09-28
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430567, 430568, G03C 1015
Patent
active
052485870
ABSTRACT:
The invention provides an improved method of forming monodispersed tabular silver halide grains. These and other objects of the invention are generally performed by providing a method of forming silver halide grains comprising forming an initial population of small twin plane silver halide grains in an aqueous medium, and allowing ripening at a temperature greater than or equal to the temperature of forming said initial population, and then growing the ripened grains. This process is carried out, such that during between about 10 percent and about 100 percent of growth, the temperature of said aqueous medium is at least 2.degree. C. below the ripening temperature, but above the temperature of renucleation, and the pBr is between about 1.0 and 3.5 during growth.
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Bowers Jr. Charles L.
Eastman Kodak Company
Huff Mark F.
Leipold Paul A.
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