Method for producing tabular silver halide grain emulsion

Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing

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430567, 430635, 430637, 430638, 430642, G03C 1015, G03C 1035, G03C 1043, G03C 1047, G03C 1053

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active

060226811

ABSTRACT:
A method for producing a light-sensitive silver halide photographic emulsion is disclosed, comprising (a) a step of forming silver halide grain nuclei containing twin grain nuclei in a dispersion medium solution, (b) a step of ripening said grain nuclei to preferentially remain tabular grain nuclei, and (c) a step of growing said tabular grain nuclei into tabular grains to form a tabular silver halide grain, wherein in step (a), a silver halide nucleus having a chloride content of 10 mol % or more based on the amount of silver contained in the nucleus is formed, and the tabular silver halide grain obtained through steps (a), (b) and (c) has a Br content of 50 mol % or more based on the total silver amount.

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Aldrich Handbook of Fine Chemicals, 1998-1999, pp T557-T563.

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