High edge cubicity tabular grain emulsions

Details High edge cubicity tabular grain emulsions High edge cubicity tabular grain emulsions

G - Physics

03

C

G03C 1/035 (2006.01) G03C 1/005 (2006.01) G03C 1/08 (2006.01)

Patent

CA 2067559

HIGH EDGE CUBICITY TUBULAR GRAIN EMULSIONS Abstract of the Disclosure Tabular grain silver bromide and silver bromoiodide emulsions are disclosed in which less than 75 percent of the edge surfaces joining the opposed parallel major octahedral grain faces of the tabular grains lie in {111} crystallographic planes. By increasing the edge cubicity (the proportion of the edge surfaces lying in non-{111} crystallographic planes) of the tabular grains the photographic properties of the emulsion are improved. The grains are in one form doped with iron and cyano ligands.

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