Light-sensitive silver halide grain and silver halide emulsion
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United States of America Patent
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Oct 26, 2004
Grant Date -
Oct 16, 2003
app pub date -
Sep 23, 2002
filing date -
Sep 27, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A light-sensitive silver halide grain containing at least one metal complex, wherein when an a-axis, a b-axis and a c-axis of a silver halide crystal lattice are each established taking as an origin a central metal of the metal complex incorporated into the silver halide grain, the metal complex has in a ligand thereof a site which can form any bond of a covalent bond, a dative bond and an ionic bond, or a bond in a mixed form of these bonds with a silver ion on a lattice point which does not exist on any of the a-axis, the b-axis and the c-axis. The silver halide photographic material has no reciprocity failure over a wide range of exposure illuminations without desensitization and decrease of contrast on the low intensity side.
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