EP0355568A3 - Preparation of a silver halide emulsion - Google Patents

Preparation of a silver halide emulsion Download PDF

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Publication number
EP0355568A3
EP0355568A3 EP19890114620 EP89114620A EP0355568A3 EP 0355568 A3 EP0355568 A3 EP 0355568A3 EP 19890114620 EP19890114620 EP 19890114620 EP 89114620 A EP89114620 A EP 89114620A EP 0355568 A3 EP0355568 A3 EP 0355568A3
Authority
EP
European Patent Office
Prior art keywords
gelatin
silver halide
preparation
halide emulsion
redispersion
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
EP19890114620
Other languages
German (de)
French (fr)
Other versions
EP0355568A2 (en
EP0355568B1 (en
Inventor
Franz Dr. Moll
Bruno Dr. Mücke
Klaus Dr. Wagner
Herbert Dr. Gareis
Wolfgang Graesser
Peter Dr. Koepff
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.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert AG
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 Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of EP0355568A2 publication Critical patent/EP0355568A2/en
Publication of EP0355568A3 publication Critical patent/EP0355568A3/en
Application granted granted Critical
Publication of EP0355568B1 publication Critical patent/EP0355568B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08—Sensitivity-increasing substances
    • G03C1/09—Noble metals or mercury; Salts or compounds thereof; Sulfur, selenium or tellurium, or compounds thereof, e.g. for chemical sensitising
    • 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
    • G03C1/04—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with macromolecular additives; with layer-forming substances
    • G03C1/047—Proteins, e.g. gelatine derivatives; Hydrolysis or extraction products of proteins

Abstract

Die Herstellung einer lichtempfindlichen Silberhaloge­ nidemulsion durch Fällung des Silberhalogenids in Ge­ genwart von Gelatine, Ausflocken und Waschen des in Gegenwart der Gelatine gefällten Silberhalogenids und Redispergieren unter Zusatz weiterer Gelatine, wobei die Fällung in Gegenwart einer Gelatine mit einer Goldzahl von höchstens 10 µMol/g Gelatine und einem Cysteingehalt von höchstens 6 ppm und die Redispergierung mit einer Gelatine, mit einer Goldzahl von mindestens 23 µMol/g Gelatine, durchgeführt wird, führt zu einer Emulsion mit einheitlicher Kornverteilung, bei der ein unerwünscht hoher Schleier vermieden wird. The production of a photosensitive silver halogen nidemulsion by precipitation of the silver halide in Ge presence of gelatin, flocculation and washing of the Presence of gelatin precipitated silver halide and Redispersion with the addition of further gelatin, the Precipitation in the presence of a gelatin with a gold number of at most 10 µmol / g gelatin and a cysteine content of at most 6 ppm and redispersion with a Gelatin, with a gold number of at least 23 µmol / g Gelatin, carried out, leads to an emulsion uniform grain distribution at which an undesirable high veil is avoided.

EP89114620A 1988-08-20 1989-08-08 Preparation of a silver halide emulsion Expired - Lifetime EP0355568B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3828312A DE3828312A1 (en) 1988-08-20 1988-08-20 PRODUCTION OF A SILVER HALOGENID EMULSION
DE3828312 1988-08-20

Publications (3)

Publication Number Publication Date
EP0355568A2 EP0355568A2 (en) 1990-02-28
EP0355568A3 true EP0355568A3 (en) 1991-01-23
EP0355568B1 EP0355568B1 (en) 1995-01-11

Family

ID=6361251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89114620A Expired - Lifetime EP0355568B1 (en) 1988-08-20 1989-08-08 Preparation of a silver halide emulsion

Country Status (4)

Country Link
US (1) US4992362A (en)
EP (1) EP0355568B1 (en)
JP (1) JPH02111940A (en)
DE (2) DE3828312A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5412075A (en) * 1992-03-11 1995-05-02 Eastman Kodak Company Control of methionine content in photographic grade gelatin

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE231430C (en) *
BE484325A (en) * 1947-08-13
US3888676A (en) * 1973-08-27 1975-06-10 Du Pont Silver halide films with wide exposure latitude and low gradient
US4131467A (en) * 1977-11-23 1978-12-26 E. I. Du Pont De Nemours And Company 4,7-Dihydroxybenzimidazole hydrobromide as antifogger
US4496652A (en) * 1978-12-26 1985-01-29 E. I. Du Pont De Nemours And Company Silver halide crystals with two surface types
CA1284050C (en) * 1985-12-19 1991-05-14 Joe E. Maskasky Process for precipitating a tabular grain emulsion in the presence of a gelatino-peptizer and an emulsion produced thereby
CA1284051C (en) * 1985-12-19 1991-05-14 Joe E. Maskasky Chloride containing emulsion and a process for emulsion preparation

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 91, no. 26, 24 Dezember 1979 Columbus, Ohio, USA W.Wojciak et al.: "Evaluation of criteria use for quantitative characterization of the protective properties of lyophilic colloids" Seite 378; rechte Spalte; ref. no. 217326Z *
JOURNAL OF PHOTOGRAPHIC SCIENCE. vol. 37, no. 1, Januar 1989, LONDON GB Seiten 19 - 22; F.J.Moll, K.Wagner: "Determination of Cysteine/Cystine in Gelatin" *

Also Published As

Publication number Publication date
JPH02111940A (en) 1990-04-24
DE58908871D1 (en) 1995-02-23
US4992362A (en) 1991-02-12
EP0355568A2 (en) 1990-02-28
EP0355568B1 (en) 1995-01-11
DE3828312A1 (en) 1990-03-01

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