US1725934A - Silver-halide photographic emulsion and process of making the same - Google Patents
Silver-halide photographic emulsion and process of making the same Download PDFInfo
- Publication number
- US1725934A US1725934A US56776A US5677625A US1725934A US 1725934 A US1725934 A US 1725934A US 56776 A US56776 A US 56776A US 5677625 A US5677625 A US 5677625A US 1725934 A US1725934 A US 1725934A
- Authority
- US
- United States
- Prior art keywords
- emulsion
- silver halide
- thiazole
- same
- curve
- 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 - Lifetime
Links
- 239000000839 emulsion Substances 0.000 title description 44
- 238000000034 method Methods 0.000 title description 10
- -1 SILVER HALIDE Chemical class 0.000 description 23
- 229910052709 silver Inorganic materials 0.000 description 16
- 239000004332 silver Substances 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 5
- 239000001828 Gelatine Substances 0.000 description 4
- 229920000159 gelatin Polymers 0.000 description 4
- 235000019322 gelatine Nutrition 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- CZIRZNRQHFVCDZ-UHFFFAOYSA-L titan yellow Chemical compound [Na+].[Na+].C1=C(C)C(S([O-])(=O)=O)=C2SC(C3=CC=C(C=C3)/N=N/NC3=CC=C(C=C3)C3=NC4=CC=C(C(=C4S3)S([O-])(=O)=O)C)=NC2=C1 CZIRZNRQHFVCDZ-UHFFFAOYSA-L 0.000 description 4
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 150000007979 thiazole derivatives Chemical class 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- IOJUPLGTWVMSFF-UHFFFAOYSA-N cyclobenzothiazole Natural products C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 150000003557 thiazoles Chemical class 0.000 description 2
- 241001479434 Agfa Species 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000005070 ripening Effects 0.000 description 1
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical class CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 1
Images
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
- G03C1/346—Organic derivatives of bivalent sulfur, selenium or tellurium
Definitions
- the present invention relates to the manufacture of high-speed silver halide emulsions suitable for photographic layers which are relatively free from fog by the addition of .0 thiazole compounds to the colloidal substances used in the preparation of the emulsions.
- the single figure is a graphic representation of the properties ofl emulsions prepared with and without the use of thiazole com- :o pounds.
- Curve is a curve indicatingr the relation of exposures to the corresponding developed densities of a photographic plate coated with a certain silver halide emulsion.
- Curve c is a curve indicating the same relationship for a plate coated with an emulsion Which is prepared in exactly the same way as the emulsion corresponding to the curve w, but with addition of a thiazole compound.
- Gelatine is worked up to a photographic emulsion by a Well-known process and the emulsion is etficaciously ripened by heating at 60O C. during 60 minutes. It shows then the properties indicated by the characteristie curve a on the drawing.
- the vertical distances of the curves a and 0 from the abscissa represent the densities of the developed emulsions, while the lengths of the abscissa represent the logarithms of the times of exposure.
- the beginning densityvalue on the ordinate where the exposure value is zero represents the initial fog.
- thiazole yellow there may be substituted otherthiazole compounds, e g. carboxylic acids of thiazole, the trimethylammonium derivative of dehydrothiotoluidine and thiazole compounds of 2-amino-5-oxynaphthalene-Z-sulfonic acid.
- carboxylic acids of thiazole the trimethylammonium derivative of dehydrothiotoluidine and thiazole compounds of 2-amino-5-oxynaphthalene-Z-sulfonic acid.
- a process of manufacturing light-sensitive silver halide photographic emulsions which comprises preparing the emulsion in presence of a thiazole compound.
- a process of manufacturing light-sensitive silver halide photographic emulsions which comprises preparing the emulsion in presence of a thiaZole derivative containing a fused ring.
- a process of manufacturing lightsensitive silver halide photographic emulsions which comprises preparing the emulsionI in presence of a benzothiazole compound.
- n characteristic 4. A process of manufacturing lightsensitive silver halide photographic emulsions which comprises preparing the emulsions in presence of thiazole yellow.
- a photographic layer containingl a silver halide emulsion having the characteristic properties of an emulsion prepared in the presence of a henzothiazole compound.
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)
- Thiazole And Isothizaole Compounds (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE246800X | 1925-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1725934A true US1725934A (en) | 1929-08-27 |
Family
ID=5935208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US56776A Expired - Lifetime US1725934A (en) | 1925-01-31 | 1925-09-16 | Silver-halide photographic emulsion and process of making the same |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1725934A (fr) |
| FR (1) | FR602965A (fr) |
| GB (1) | GB246800A (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2668113A (en) * | 1951-01-26 | 1954-02-02 | Du Pont | Photographic antibronzing agents |
| US2870015A (en) * | 1957-03-08 | 1959-01-20 | Eastman Kodak Co | Stabilized photographic silver halide emulsions |
-
1925
- 1925-09-05 FR FR602965D patent/FR602965A/fr not_active Expired
- 1925-09-16 US US56776A patent/US1725934A/en not_active Expired - Lifetime
- 1925-10-22 GB GB26501/25A patent/GB246800A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2668113A (en) * | 1951-01-26 | 1954-02-02 | Du Pont | Photographic antibronzing agents |
| US2870015A (en) * | 1957-03-08 | 1959-01-20 | Eastman Kodak Co | Stabilized photographic silver halide emulsions |
Also Published As
| Publication number | Publication date |
|---|---|
| GB246800A (en) | 1926-07-08 |
| FR602965A (fr) | 1926-04-06 |
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