GB701054A - Photographic anti-fogging agents and emulsion stabilisers - Google Patents
Photographic anti-fogging agents and emulsion stabilisersInfo
- Publication number
- GB701054A GB701054A GB974551A GB974551A GB701054A GB 701054 A GB701054 A GB 701054A GB 974551 A GB974551 A GB 974551A GB 974551 A GB974551 A GB 974551A GB 701054 A GB701054 A GB 701054A
- Authority
- GB
- United Kingdom
- Prior art keywords
- emulsion
- amino
- drawn
- photographic
- similar
- 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)
- Plural Heterocyclic Compounds (AREA)
Abstract
701,054. Photographic emulsions and developing solutions therefor. IMPERIAL CHEMICAL INDUSTRIES, Ltd. April 16, 1952 [April 26, 1951], No. 9745/51. Class 98(2) A photographic silver halide emulsion is treated, for stabilizing and antifogging purposes, at a stage not later than the development of a latent image therein, with a small quantity of a heterocyclic compound of the formula wherein X and Z represent the atoms necessary to complete a pyrazine, pyrazole, triazole, or thiazole ring, and R 1 is H, NH 2 , OH, SH, S-alkyl, or a hydrocarbon group. The compound (e.g. 2-amino- 4-hydroxypteridine, 5-amino-7-methyltriazolo pyrimidine, 2: 5-diamino-7-methylthiazolopyrimidine, 5: 7-diaminotriazolopyrimidine, 5-amino-7-hydroxytriazolopyrimidine, 2:4-diaminopteridine, or 5- amino-7-methylmercapto-isopurine) may be incorporated in the emulsion during manufacture (preferably after digestion), in a layer adjacent to the emulsion, or in the developer. The emulsion may be a blue-sensitive or coloursensitized emulsion containing a non-diffusible colour coupler. In example 1, a comparison is drawn between the fog and speed values for a silver iodobromide emulsion coated on glass plates, one of which is immediately exposed, developed, and fixed, and another is similarly treated after 8 days storage at 50‹C and 50 per cent relative humidity; another similar pair, containing 3 : 7-diaminotriazolopyrimidine, are similarly treated. In example 2, a similar comparison is drawn, using 2:4-diaminopteridine, with an emulsion containing 3 - (p-anisoylacetylamino) 4 - (N- methyl : N - octadecylamino) - benzoic acid. In examples 3 and 4, the procedure is similar, using 5-amino-7-methyltriazolopyrimidine, the emulsion in example 4 being a fast negative silver iodobromide emulsion: In example 5, a similar comparison is drawn, for fog values only, with a fast negative silver iodobromide emulsion containing the red-sensitizing dye Ma 1088 (B.I.O.S. Final Report No. 1355 page 82), and 2-(1-hydroxy-2- naphthoyl)-amino-1-N-methyl : N-octadecylaniline- 4-sulphonic acid, with or without 5-amino-7-methylmercapto-isopurine, the exposed material being colour developed with a developer containing 4-diethylaminoaniline. Specification 442,731 is referred to. According to the Provisional Specification, X and Z may represent the atoms necessary to complete a 5- or 6-membered heterocyclic ring containing 2 or 3 heteroatoms, other than an iminiazole ring and the compound may be incorporated in the support of the photographic material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB974551A GB701054A (en) | 1951-04-26 | 1951-04-26 | Photographic anti-fogging agents and emulsion stabilisers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB974551A GB701054A (en) | 1951-04-26 | 1951-04-26 | Photographic anti-fogging agents and emulsion stabilisers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB701054A true GB701054A (en) | 1953-12-16 |
Family
ID=9877949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB974551A Expired GB701054A (en) | 1951-04-26 | 1951-04-26 | Photographic anti-fogging agents and emulsion stabilisers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB701054A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3185570A (en) * | 1962-12-18 | 1965-05-25 | Gen Aniline & Film Corp | Stabilized light-sensitive emulsions |
US3244521A (en) * | 1961-11-02 | 1966-04-05 | Gen Aniline & Film Corp | Silver halide emulsions containing antifogging agents |
US5508153A (en) * | 1992-12-09 | 1996-04-16 | Konica Corporation | Composition for developing a black-and-white silver halide photographic light-sensitive material |
-
1951
- 1951-04-26 GB GB974551A patent/GB701054A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3244521A (en) * | 1961-11-02 | 1966-04-05 | Gen Aniline & Film Corp | Silver halide emulsions containing antifogging agents |
US3185570A (en) * | 1962-12-18 | 1965-05-25 | Gen Aniline & Film Corp | Stabilized light-sensitive emulsions |
US5508153A (en) * | 1992-12-09 | 1996-04-16 | Konica Corporation | Composition for developing a black-and-white silver halide photographic light-sensitive material |
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