Method for producing tabular silver halide grain emulsion
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United States of America Patent
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Feb 8, 2000
Grant Date -
N/A
app pub date -
Apr 16, 1998
filing date -
Apr 18, 1997
priority date (Note) -
Expired
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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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