Silver halide emulsion and method of preparing the same
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United States of America Patent
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Sep 28, 2004
Grant Date -
Apr 10, 2003
app pub date -
Mar 25, 2002
filing date -
Mar 26, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A silver halide emulsion is disclosed, comprising silver halide grains which each have a host tabular grain part and a part grown on the outside thereof, wherein in said host tabular grains parts, at least 50% of total projected area of the silver halide grains are accounted for by silver halide tabular grains having {111} main surfaces, and said silver halide grains comprises the main surface of the host tabular grain part subjected to junction with high-iodide epitaxial phases comprising silver halide containing at least 97 mole % of silver iodide and the lateral face of the host tabular grain part comprises silver halide having an iodide content of substantially 5 mole % or below; and a method of preparing a silver halide photographic emulsion is disclosed, comprising silver halide grains which each have a host tabular grain part and a part grown on the outside thereof.
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