Photosensitive silver halide emulsion containing a metal carbonyl-complex as a dopant
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United States of America Patent
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Nov 16, 1999
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app pub date -
Sep 23, 1998
filing date -
Sep 23, 1998
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Abstract
A photosensitive element is disclosed comprising on at least one side of a support one or more silver halide emulsion layers and a non-light sensitive hydrophilic colloidal layer characterized in that at least one emulsion layer comprises silver halide crystals having an oligomeric platinum complex containing only carbonyl ligands, which is represented by formula (1): [Pt.sub.3 (CO).sub.6 ].sub.n.sup.2- (1) wherein n is not more than 10. The invention also provides a method for the preparation of a photosensitive element as described hereinbefore comprising the step of introducing the oligomeric platinum carbonyl containing complex as represented by formula (1) during grain formation in at least one silver halide emulsion.
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