GB580497A - Improvements in sensitive silver salt emulsions and developing-out processes therefor - Google Patents
Improvements in sensitive silver salt emulsions and developing-out processes thereforInfo
- Publication number
- GB580497A GB580497A GB4956/44A GB495644A GB580497A GB 580497 A GB580497 A GB 580497A GB 4956/44 A GB4956/44 A GB 4956/44A GB 495644 A GB495644 A GB 495644A GB 580497 A GB580497 A GB 580497A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vapours
- emulsion
- aqueous
- developing
- treated
- 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
- 239000000839 emulsion Substances 0.000 title abstract 9
- 238000000034 method Methods 0.000 title abstract 2
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 title abstract 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 abstract 6
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 abstract 4
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 abstract 4
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 abstract 4
- 239000003795 chemical substances by application Substances 0.000 abstract 3
- 238000010438 heat treatment Methods 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 3
- 235000010265 sodium sulphite Nutrition 0.000 abstract 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 2
- 239000000908 ammonium hydroxide Substances 0.000 abstract 2
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 abstract 1
- ZVNPWFOVUDMGRP-UHFFFAOYSA-N 4-methylaminophenol sulfate Chemical compound OS(O)(=O)=O.CNC1=CC=C(O)C=C1.CNC1=CC=C(O)C=C1 ZVNPWFOVUDMGRP-UHFFFAOYSA-N 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 150000001412 amines Chemical class 0.000 abstract 1
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- QIRAYNIFEOXSPW-UHFFFAOYSA-N dimepheptanol Chemical compound C=1C=CC=CC=1C(CC(C)N(C)C)(C(O)CC)C1=CC=CC=C1 QIRAYNIFEOXSPW-UHFFFAOYSA-N 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 abstract 1
- ZUNKMNLKJXRCDM-UHFFFAOYSA-N silver bromoiodide Chemical compound [Ag].IBr ZUNKMNLKJXRCDM-UHFFFAOYSA-N 0.000 abstract 1
- -1 sodium sulphite Chemical compound 0.000 abstract 1
- 239000003381 stabilizer Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
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
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/262—Processes using silver-salt-containing photosensitive materials or agents therefor using materials covered by groups G03C1/42 and G03C1/43
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
580,497. Photographic developing processes. KODAK, Ltd. (Eastman Kodak Co., Yackel, E. C., Leermakers, J. A., and Staud, C. J.). March 16, 1944, No. 4956. [Class 98 (ii)] A photographic image is formed in an exposed silver salt emulsion having incorporated therein a developing agent by subjection to moist vapours of such chemical composition to cause the pH of the emulsion to rise until the developing agent develops the latent image. The emulsion may be a silver bromide, chloride, or bromiodide emulsion, and may be a modified Lippmann type emulsion. The developing agent added thereto may be hydroquinone, metol, amidol, or p-phenylenediamine, and a stabilizing agent, e.g. sodium sulphite, may also be added. The exposed material is treated with alkaline vapours such as moist ammonia vapours or vapours produced by heating an aqueous solution of a volatile amine (e.g. vapours produced by heating aqueous ammonium hydroxide or aqueous methylamine or ethylamine) or, where the emulsion contains sodium sulphite, by treatment with acetone vapour. After development, the material may be treated with acid vapours to stop development. In an example, to a fine grain gelatino silver bromiodide emulsion is added hydroquinone and sodium sulphite, and the emulsion is coated on a glass, film, or paper support. The exposed material is developed by treatment with vapours obtained by heating aqueous ammonium hydroxide or aqueous methylamine or ethylamine, is subjected to a stream of compressed air, and is then treated with vapours from aqueous hydrochloric acid.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US500924A US2388894A (en) | 1943-09-02 | 1943-09-02 | Method of developing photographic emulsions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB580497A true GB580497A (en) | 1946-09-10 |
Family
ID=23991473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4956/44A Expired GB580497A (en) | 1943-09-02 | 1944-03-16 | Improvements in sensitive silver salt emulsions and developing-out processes therefor |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2388894A (en) |
| FR (1) | FR945085A (en) |
| GB (1) | GB580497A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2607685A (en) * | 1946-10-03 | 1952-08-19 | Polaroid Corp | Photographic product comprising a plurality of rupturable containers, each carrying a liquid for processing said product |
| US2600996A (en) * | 1946-10-08 | 1952-06-17 | Polaroid Corp | Photographic product comprising a light-sensitive diazonium compound, a coupler and a rupturable containing means holding ammonia under pressure |
| US2661293A (en) * | 1946-10-08 | 1953-12-01 | Polaroid Corp | Process of producing a colored photographic image by means of exhaustion of developer |
| US2647055A (en) * | 1946-11-06 | 1953-07-28 | Polaroid Corp | Photographic product and process for forming a white image viewable against a dark background |
| US2616807A (en) * | 1946-11-29 | 1952-11-04 | Polaroid Corp | Silver halide developer containing a film-forming plastic and a water insoluble finely comminuted solid substance |
| US2691587A (en) * | 1949-07-20 | 1954-10-12 | Rca Corp | Developing of diazotype images |
| BE519520A (en) * | 1952-05-03 | |||
| NL87015C (en) * | 1952-07-16 |
-
1943
- 1943-09-02 US US500924A patent/US2388894A/en not_active Expired - Lifetime
-
1944
- 1944-03-16 GB GB4956/44A patent/GB580497A/en not_active Expired
-
1947
- 1947-04-14 FR FR945085D patent/FR945085A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR945085A (en) | 1949-04-25 |
| US2388894A (en) | 1945-11-13 |
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