Process of preparing high bromide (100) tabular grain emulsions

Details Process of preparing high bromide (100) tabular grain emulsions Process of preparing high bromide (100) tabular grain emulsions

1997-10-23

1999-03-09

Huff, Mark F.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430567, G03C 1035, G03C 1015

Patent

active

058798730

ABSTRACT:
A process of preparing a high bromide {100} tabular grain emulsion is disclosed wherein mean ECD of the tabular grains obtained at the conclusion of ripening is controlled by the use of chloride ion. Specifically, both the concentration of chloride ion introduced before grain nucleation and the proportion of chloride ion and bromide ion present during nucleation are shown to allow control of final mean grain ECD in the fully ripened emulsion.

REFERENCES:
patent: 4063951 (1977-12-01), Bogg
patent: 4386156 (1983-05-01), Mignot
patent: 5565314 (1996-10-01), Nakatsu et al.
patent: 5652089 (1997-07-01), Saitou
patent: 5726006 (1998-03-01), Gourlaouen et al.

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