Process for precipitating a tabular grain emulsion in the...

Details Process for precipitating a tabular grain emulsion in the... Process for precipitating a tabular grain emulsion in the...

G - Physics

03

C

96/147

G03C 1/005 (2006.01) G03C 1/047 (2006.01) G03C 1/30 (2006.01)

Patent

CA 1284050

A PROCESS FOR PRECIPITATING A TABULAR GRAIN EMULSION IN THE PRESENCE OF A GELATINO-PEPTIZER AND AN EMULSION PRODUCED THEREBY Abstract of the Disclosure The present invention is directed to a process of precipitating for use in photography a thin, tabular grain silver bromide or bromoiodide emulsion employing a gelatino-peptizer comprised of less than 30 micromoles of methionine per gram and to an emulsion produced by this process, A variety of advantage can be realized, including a wider range of permissible bromide ion concentrations during precipitation, thinner and/or larger diameter tabular grains, a reduced rod population, and novel tabular grain forms.

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