PREPARATION OF SILVER HALIDE EMULSION

PREPARATION OF SILVER HALIDE EMULSION

PROBLEM TO BE SOLVED: To make obtainable a high contrast emulsion which ensures a picture contrasty and having a sharp toe and good stability of sensitivity every lot by incorporating rhodium ions into a solution containing halogen ions and carrying out mixing at below a specified pH of the solution...

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1. Verfasser: SUMI SEIICHI
Format: Patent
Sprache:eng
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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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creator SUMI SEIICHI
description PROBLEM TO BE SOLVED: To make obtainable a high contrast emulsion which ensures a picture contrasty and having a sharp toe and good stability of sensitivity every lot by incorporating rhodium ions into a solution containing halogen ions and carrying out mixing at below a specified pH of the solution. SOLUTION: In a double jet mixing method in which a solution containing halogen ions and a solution containing silver ions are simultaneously mixed, rhodium ions are incorporated into the solution containing halogen ions and mixing is carried out at
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SOLUTION: In a double jet mixing method in which a solution containing halogen ions and a solution containing silver ions are simultaneously mixed, rhodium ions are incorporated into the solution containing halogen ions and mixing is carried out at &lt;pH 6.5 of the solution. In the double jet method, a solution containing gelatin initially put in a mixing pot, the solution containing halogen ions and rhodium ions and the solution containing silver ions are used. Rhodium ions are dissolved in the halogen solution by dissolving rhodium chloride, ammonium hexachlororhodate or the like together with halogen ions. 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SOLUTION: In a double jet mixing method in which a solution containing halogen ions and a solution containing silver ions are simultaneously mixed, rhodium ions are incorporated into the solution containing halogen ions and mixing is carried out at &lt;pH 6.5 of the solution. In the double jet method, a solution containing gelatin initially put in a mixing pot, the solution containing halogen ions and rhodium ions and the solution containing silver ions are used. Rhodium ions are dissolved in the halogen solution by dissolving rhodium chloride, ammonium hexachlororhodate or the like together with halogen ions. 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subjects 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
title PREPARATION OF SILVER HALIDE EMULSION
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