GB1399449A - Photographic silver halide development - Google Patents

Photographic silver halide development

Info

Publication number
GB1399449A
GB1399449A GB4351771A GB4351771A GB1399449A GB 1399449 A GB1399449 A GB 1399449A GB 4351771 A GB4351771 A GB 4351771A GB 4351771 A GB4351771 A GB 4351771A GB 1399449 A GB1399449 A GB 1399449A
Authority
GB
United Kingdom
Prior art keywords
silver halide
dinitrobenzene
nitrobenzene
emulsion
acid
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
GB4351771A
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
Priority to BE788687D priority Critical patent/BE788687A/en
Application filed by Agfa Gevaert AG filed Critical Agfa Gevaert AG
Priority to GB4351771A priority patent/GB1399449A/en
Priority to JP7942772A priority patent/JPS5443376B2/ja
Priority to SU721826729A priority patent/SU453852A3/en
Priority to FR7232682A priority patent/FR2152996B1/fr
Priority to DE19722245286 priority patent/DE2245286C2/en
Priority to JP9312672A priority patent/JPS4839029A/ja
Priority to US05/541,123 priority patent/US4132551A/en
Publication of GB1399449A publication Critical patent/GB1399449A/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
    • G03C1/34—Fog-inhibitors; Stabilisers; Agents inhibiting latent image regression

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Abstract

1399449 Photographic silver halide development AGFA-GEVAERT 15 Sept 1972 [17 Sept 1971] 43517/71 Heading G2C [Also in Division C2] An exposed photographic material comprising a support and at least one silver halide emulsion is developed above 30‹C in the presence of at least one non-quarternary, 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 from, alkoxycarbonyl, 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 pdinitrobenzene, 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-carboxymethylthio-nitrobenzene, 4-carboxyethynyl-nitrobenzene, 4-pentadecyl- 1,3-dinitrobenzene, 4-n-hexadecylthio-1,3- dinitrobenzene, 4-n-hexadecyloxy-1,3- dinitrobenzene or 4,4'-dinitro-biphenyl. The compound is preferably present in the silver halide emulsion. These compounds reduce fog produced by processing at elevated temperatures without significantly reducing emulsion speed and in some cases increase emulsion speed. The emulsion may contain mercury cyanide (Ex 1-3) and 5-methyl-7-hydroxy -s-triazolo [1,5-a] pyrimidine (Ex 1-4). The ratio of hydrophilic colloid to silver halide (as AgNO 3 ) may be 0À2 to 0À6.
GB4351771A 1971-09-17 1971-09-17 Photographic silver halide development Expired GB1399449A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
BE788687D BE788687A (en) 1971-09-17 DEVELOPMENT OF SILVER HALOGENIDE MATERIAL AT ELEVATED TEMPERATURE
GB4351771A GB1399449A (en) 1971-09-17 1971-09-17 Photographic silver halide development
JP7942772A JPS5443376B2 (en) 1971-09-17 1972-08-08
SU721826729A SU453852A3 (en) 1971-09-17 1972-08-31 LIGHT-SENSITIVE PHOTOGRAPHIC MATERIAL
FR7232682A FR2152996B1 (en) 1971-09-17 1972-09-13
DE19722245286 DE2245286C2 (en) 1971-09-17 1972-09-15 Process for developing a photographic material at an elevated temperature
JP9312672A JPS4839029A (en) 1971-09-17 1972-09-16
US05/541,123 US4132551A (en) 1971-09-17 1975-01-15 High temperature processing of photographic silver halide material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4351771A GB1399449A (en) 1971-09-17 1971-09-17 Photographic silver halide development

Publications (1)

Publication Number Publication Date
GB1399449A true GB1399449A (en) 1975-07-02

Family

ID=10429095

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4351771A Expired GB1399449A (en) 1971-09-17 1971-09-17 Photographic silver halide development

Country Status (6)

Country Link
JP (2) JPS5443376B2 (en)
BE (1) BE788687A (en)
DE (1) DE2245286C2 (en)
FR (1) FR2152996B1 (en)
GB (1) GB1399449A (en)
SU (1) SU453852A3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3832179A (en) * 1973-01-24 1974-08-27 Eastman Kodak Co Inhibition of fog in photographic color development
JPS59155114U (en) * 1983-04-06 1984-10-18 三菱化成ポリテック株式会社 Soft polyvinyl chloride film with partially porous areas
JPS60262074A (en) * 1984-06-09 1985-12-25 Nec Corp Integrated logical circuit device
US5466568A (en) * 1993-09-30 1995-11-14 Eastman Kodak Company Photographic element containing an azopyrazolone masking coupler exhibiting reduced fog

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB835047A (en) * 1956-01-05 1960-05-18 Kodak Ltd Improvements in photographic silver halide emulsions
BE594454A (en) * 1959-09-04
US3161515A (en) * 1962-12-18 1964-12-15 Gen Aniline & Film Corp Stabilized light-sensitive silver halide emulsions
GB1054344A (en) * 1964-08-08
US3573915A (en) * 1966-11-16 1971-04-06 Gaf Corp Photographic silver halide emulsions containing nitrosubstituted or unisubstituted cinnamic acid or cinnamaldehyde

Also Published As

Publication number Publication date
FR2152996B1 (en) 1976-10-29
JPS4839030A (en) 1973-06-08
SU453852A3 (en) 1974-12-15
DE2245286C2 (en) 1983-09-15
JPS5443376B2 (en) 1979-12-19
DE2245286A1 (en) 1973-03-22
JPS4839029A (en) 1973-06-08
FR2152996A1 (en) 1973-04-27
BE788687A (en) 1973-03-12

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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