JPS5764226A - Preparation of silver halide photographic emulsion - Google Patents

Preparation of silver halide photographic emulsion

Info

Publication number
JPS5764226A
JPS5764226A JP14072680A JP14072680A JPS5764226A JP S5764226 A JPS5764226 A JP S5764226A JP 14072680 A JP14072680 A JP 14072680A JP 14072680 A JP14072680 A JP 14072680A JP S5764226 A JPS5764226 A JP S5764226A
Authority
JP
Japan
Prior art keywords
acid
silver nitrate
emulsion
solution
silver halide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP14072680A
Other languages
Japanese (ja)
Other versions
JPH0210933B2 (en
Inventor
Bon Honda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP14072680A priority Critical patent/JPS5764226A/en
Publication of JPS5764226A publication Critical patent/JPS5764226A/en
Publication of JPH0210933B2 publication Critical patent/JPH0210933B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/015—Apparatus or processes for the preparation of emulsions
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C2200/00—Details
    • G03C2200/44—Details pH value

Abstract

PURPOSE:To improve sensitivity and property of a film, by first placing an acid in a reaction vessel in preparing a photographic emulsion by an ammonia method. CONSTITUTION:An aq. ammoniacal silver nitrate solution is added to the reaction vessel where an aq. acid or aq. acid and ammonia solution has been already present, in preparing a silver halide emulsion from an ammoniacal silver nitrate and an aq. alkali halide solution. In the back mixing method using a single jet, the aq. ammmonical silver nitrate solution is placed in the reactor in advance, but in the other mixing methods, large drop of pH is avoided by use of a strong acid. Lowering of pH to >=1 permits photographic performance to be improved without changing grain size distribution and crystal forms, etc., and the emulsion to be prepared at high temperatures, and therefore, reaction time to be shortened.
JP14072680A 1980-10-07 1980-10-07 Preparation of silver halide photographic emulsion Granted JPS5764226A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14072680A JPS5764226A (en) 1980-10-07 1980-10-07 Preparation of silver halide photographic emulsion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14072680A JPS5764226A (en) 1980-10-07 1980-10-07 Preparation of silver halide photographic emulsion

Publications (2)

Publication Number Publication Date
JPS5764226A true JPS5764226A (en) 1982-04-19
JPH0210933B2 JPH0210933B2 (en) 1990-03-12

Family

ID=15275274

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14072680A Granted JPS5764226A (en) 1980-10-07 1980-10-07 Preparation of silver halide photographic emulsion

Country Status (1)

Country Link
JP (1) JPS5764226A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62141534A (en) * 1985-12-16 1987-06-25 Konishiroku Photo Ind Co Ltd Production of silver halide photographic emulsion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62141534A (en) * 1985-12-16 1987-06-25 Konishiroku Photo Ind Co Ltd Production of silver halide photographic emulsion
JPH0443570B2 (en) * 1985-12-16 1992-07-17 Konishiroku Photo Ind

Also Published As

Publication number Publication date
JPH0210933B2 (en) 1990-03-12

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