GB1399450A - Photographic silver halide material - Google Patents

Photographic silver halide material

Info

Publication number
GB1399450A
GB1399450A GB4935374A GB4935374A GB1399450A GB 1399450 A GB1399450 A GB 1399450A GB 4935374 A GB4935374 A GB 4935374A GB 4935374 A GB4935374 A GB 4935374A GB 1399450 A GB1399450 A GB 1399450A
Authority
GB
United Kingdom
Prior art keywords
silver halide
dinitrobenzene
emulsion
nitrobenzene
compounds
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.)
Expired
Application number
GB4935374A
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
Priority to GB4935374A priority Critical patent/GB1399450A/en
Publication of GB1399450A publication Critical patent/GB1399450A/en
Expired 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
    • G03C1/10—Organic substances
    • 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
    • G03C1/34—Fog-inhibitors; Stabilisers; Agents inhibiting latent image regression

Abstract

1399450 Photographic silver halide material AGFA-GEVAERT 15 Sept 1972 [17 Sept 1971] 49353/74 Divided out of 1399449 Heading G2C A photographic silver halide material comprises an azaindene emulsion stabilizer and a non- quaternary, non-heterocyclic nitrobenzene compound of the Formula:- where (R) n is one or more substituents selected from H, halogen, OH, NO 2 , CN, sulpho or carboxy in acid or salt form, alkoxycarbony, acyl derived from a carboxylic or sulphonic acid or optionally substituted alkyl, alkenyl, alkynyl, alkoxy, alkylmercapto, amino or aryl. Preferred compounds are nitrobenzene, m- or p-dinitrobenzene, 2, 4-dinitrobenzene sulphonic acid or its sodium salt, 2-benzoylvinyl-4-nitrophenol, 1,2,3-trinitro- 4,5-dimethoxy-benzene, N-methyl-2,4-dinitroaniline, p-nitrobenzonitrile, 2-nitroacetophenone, 4-nitrophthalic acid, 2-carboxymethylthionitrobenzene, 4-carboxyethynyl-nitrobenzene, 4-pentadecyl-1,3-dinitrobenzene, 4-n-hexadecylthio-1,3,-dinitrobenzene, 4-n-hexadecyloxy- 1,3-dinitrobenzene or 4,4<SP>1</SP>-dinitro-biphenyl. The azaindene may be 5-methyl-7-hydroxy-s-triazolo [15-a]-pyrimidine. The compounds are preferably present in a silver halide emulsion. The compounds of the above Formula reduce fog produced by processing at elevated temperatures without significantly reducing emulsion speed and in some cases increase emulsion speed. The silver halide emulsion may contain mercury cyanide (Ex 1-3). The ratio of hydrophilic colloid to silver halide (as AgNO 3 ) may be 0À2 to 0À6.
GB4935374A 1971-09-17 1971-09-17 Photographic silver halide material Expired GB1399450A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4935374A GB1399450A (en) 1971-09-17 1971-09-17 Photographic silver halide material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4935374A GB1399450A (en) 1971-09-17 1971-09-17 Photographic silver halide material

Publications (1)

Publication Number Publication Date
GB1399450A true GB1399450A (en) 1975-07-02

Family

ID=10452083

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4935374A Expired GB1399450A (en) 1971-09-17 1971-09-17 Photographic silver halide material

Country Status (1)

Country Link
GB (1) GB1399450A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4171976A (en) * 1978-03-10 1979-10-23 Eastman Kodak Company Homopolymerization inhibition of photographic hardeners
EP0101089A2 (en) * 1982-08-16 1984-02-22 E.I. Du Pont De Nemours And Company Organic oxidants and radical traps for negative-working silver halide emulsions
EP0128563A2 (en) * 1983-06-10 1984-12-19 E.I. Du Pont De Nemours And Company Improved antifoggant process
US4741990A (en) * 1986-03-07 1988-05-03 Konishiroku Photo Industry Co., Ltd. Method for processing silver halide photographic light-sensitive materials

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4171976A (en) * 1978-03-10 1979-10-23 Eastman Kodak Company Homopolymerization inhibition of photographic hardeners
EP0101089A2 (en) * 1982-08-16 1984-02-22 E.I. Du Pont De Nemours And Company Organic oxidants and radical traps for negative-working silver halide emulsions
EP0101089A3 (en) * 1982-08-16 1985-01-09 E.I. Du Pont De Nemours And Company Organic oxidants and radical traps for negative-working silver halide emulsions
EP0128563A2 (en) * 1983-06-10 1984-12-19 E.I. Du Pont De Nemours And Company Improved antifoggant process
EP0128563A3 (en) * 1983-06-10 1988-01-07 E.I. Du Pont De Nemours And Company Improved antifoggant process
US4741990A (en) * 1986-03-07 1988-05-03 Konishiroku Photo Industry Co., Ltd. Method for processing silver halide photographic light-sensitive materials

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee