Silver bromide emulsions with tabular grains of high aspect...

Details Silver bromide emulsions with tabular grains of high aspect... Silver bromide emulsions with tabular grains of high aspect...

G - Physics

03

C

96/112

G03C 1/005 (2006.01)

Patent

CA 1175699

- 0 - SILVER BROMIDE EMULSIONS OF NARROW GRAIN SIZE DISTRIBUTION AND PROCESSES FOR THEIR PREPARATION Abstract of the Disclosure Radiation-sensitive emulsions are disclosed containing tabular silver bromide grains bounded by two substantially parallel square or rectangular crystal faces and having an average aspect ratio of at least 8.5:1. The tabular grains preferably exhi- bit a coefficient of variation of less than 30. The tabular grains are formed by providing cubic seed grains having an edge length of less than 0.15 micro and ripening the seed grains at a pAg in the range of from 5.0 to 8.0 in the substantial absence of non- halide silver ion complexing agents.

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