Tellurium complexes as chemical sensitizers for silver halides

The invention is generally accomplished providing a silver halide emulsion comprising silver halide grains and a tellurium compound represented by Formula I:TeLnX2wherein L is thiourea or substituted thiourea, n is 2 or 4, X is Cl, Br, I, OCN, SCN, SeCN, TeCN, or N3 or Formula II wherein X is COR, C...

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Bibliographische Detailangaben
Hauptverfasser:	LUSHINGTON, KENNETH JAMES, GYSLING, HENRY JAMES
Format:	Patent
Sprache:	eng
Schlagworte:	AUXILIARY PROCESSES IN PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS
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Beschreibung
Zusammenfassung:	The invention is generally accomplished providing a silver halide emulsion comprising silver halide grains and a tellurium compound represented by Formula I:TeLnX2wherein L is thiourea or substituted thiourea, n is 2 or 4, X is Cl, Br, I, OCN, SCN, SeCN, TeCN, or N3 or Formula II wherein X is COR, CSR, CNR2, CR, CAr, PR2, P(OR)2 R is alkyl or aryl.