GB1399449A - Photographic silver halide development - Google Patents
Photographic silver halide developmentInfo
- 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
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.
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)
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)
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 |
-
0
- BE BE788687D patent/BE788687A/en unknown
-
1971
- 1971-09-17 GB GB4351771A patent/GB1399449A/en not_active Expired
-
1972
- 1972-08-08 JP JP7942772A patent/JPS5443376B2/ja not_active Expired
- 1972-08-31 SU SU721826729A patent/SU453852A3/en active
- 1972-09-13 FR FR7232682A patent/FR2152996B1/fr not_active Expired
- 1972-09-15 DE DE19722245286 patent/DE2245286C2/en not_active Expired
- 1972-09-16 JP JP9312672A patent/JPS4839029A/ja active Pending
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 |