Method for producing silver halide photographic emulsion

A method for producing a silver halide photographic emulsion comprising silver iodobromide or iodobromochloride grains having an average iodine content of less than 1.0 mol%, which comprises the following step (a) or (b) to form a surface portion of the grains such that the step provides 0.005 mol%...

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Bibliographische Detailangaben
Hauptverfasser:	NAKAMURA, TETSUO, YAMADA, SUMITO
Format:	Patent
Sprache:	eng ; fre ; ger
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:	A method for producing a silver halide photographic emulsion comprising silver iodobromide or iodobromochloride grains having an average iodine content of less than 1.0 mol%, which comprises the following step (a) or (b) to form a surface portion of the grains such that the step provides 0.005 mol% to less than 0.3 mol% of said total iodine content of the grains: (a) adding simultaneously a silver nitrate solution and a solution which contains iodine ion; or (b) adding fine particles of AgI and/or fine particles of AgBrI. The emulsion thus produced is suitable for photosensitive materials which are subjectd to ultra-rapid automatic development processing.