GB494468A - Improvements in or relating to photographic developers and processes of development - Google Patents
Improvements in or relating to photographic developers and processes of developmentInfo
- Publication number
- GB494468A GB494468A GB35430/37A GB3543037A GB494468A GB 494468 A GB494468 A GB 494468A GB 35430/37 A GB35430/37 A GB 35430/37A GB 3543037 A GB3543037 A GB 3543037A GB 494468 A GB494468 A GB 494468A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aminopyridine
- development
- processes
- relating
- chloro
- 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
- 238000000034 method Methods 0.000 title abstract 2
- 150000003927 aminopyridines Chemical class 0.000 abstract 3
- 239000000839 emulsion Substances 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- WGOLHUGPTDEKCF-UHFFFAOYSA-N 5-bromopyridin-2-amine Chemical compound NC1=CC=C(Br)C=N1 WGOLHUGPTDEKCF-UHFFFAOYSA-N 0.000 abstract 1
- MAXBVGJEFDMHNV-UHFFFAOYSA-N 5-chloropyridin-2-amine Chemical compound NC1=CC=C(Cl)C=N1 MAXBVGJEFDMHNV-UHFFFAOYSA-N 0.000 abstract 1
- IVILGUFRMDBUEQ-UHFFFAOYSA-N 5-iodopyridin-2-amine Chemical compound NC1=CC=C(I)C=N1 IVILGUFRMDBUEQ-UHFFFAOYSA-N 0.000 abstract 1
- HOPRXXXSABQWAV-UHFFFAOYSA-N anhydrous collidine Natural products CC1=CC=NC(C)=C1C HOPRXXXSABQWAV-UHFFFAOYSA-N 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- MCCVKQDZALWIQD-UHFFFAOYSA-N n-(5-chloropyridin-2-yl)acetamide Chemical compound CC(=O)NC1=CC=C(Cl)C=N1 MCCVKQDZALWIQD-UHFFFAOYSA-N 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- -1 silver halide Chemical class 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
- G03C5/29—Development processes or agents therefor
- G03C5/305—Additives other than developers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Pyridine Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE494468X | 1936-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB494468A true GB494468A (en) | 1938-10-26 |
Family
ID=6544720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35430/37A Expired GB494468A (en) | 1936-12-21 | 1937-12-21 | Improvements in or relating to photographic developers and processes of development |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2192891A (enrdf_load_stackoverflow) |
| BE (1) | BE425342A (enrdf_load_stackoverflow) |
| FR (1) | FR830985A (enrdf_load_stackoverflow) |
| GB (1) | GB494468A (enrdf_load_stackoverflow) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2465678A (en) * | 1947-03-19 | 1949-03-29 | Donald B Ellig | Machine for sharpening knife blades |
| US2476541A (en) * | 1947-11-18 | 1949-07-19 | Gen Aniline & Film Corp | Process for producing multilayer color negatives containing masking images for colorcorrection purposes |
| US2983605A (en) * | 1955-01-31 | 1961-05-09 | Polaroid Corp | Photographic products, processes, and compositions |
-
0
- BE BE425342D patent/BE425342A/xx unknown
-
1937
- 1937-12-20 FR FR830985D patent/FR830985A/fr not_active Expired
- 1937-12-21 GB GB35430/37A patent/GB494468A/en not_active Expired
-
1938
- 1938-01-08 US US184037A patent/US2192891A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2192891A (en) | 1940-03-12 |
| FR830985A (fr) | 1938-08-16 |
| BE425342A (enrdf_load_stackoverflow) |
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