GB546704A - Improvements in the production of coloured photographic images - Google Patents
Improvements in the production of coloured photographic imagesInfo
- Publication number
- GB546704A GB546704A GB812/41A GB81241A GB546704A GB 546704 A GB546704 A GB 546704A GB 812/41 A GB812/41 A GB 812/41A GB 81241 A GB81241 A GB 81241A GB 546704 A GB546704 A GB 546704A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- coupling
- mols
- dye made
- tetrazotized
- 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
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/28—Silver dye bleach processes; Materials therefor; Preparing or processing such materials
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Indole Compounds (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US360622A US2322001A (en) | 1940-10-10 | 1940-10-10 | Method of producing dye images |
GB10577/41A GB551501A (en) | 1940-10-10 | 1941-08-19 | Improvements in multi-layer colour photography |
Publications (1)
Publication Number | Publication Date |
---|---|
GB546704A true GB546704A (en) | 1942-07-27 |
Family
ID=26247618
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB812/41A Expired GB546704A (en) | 1940-10-10 | 1941-01-21 | Improvements in the production of coloured photographic images |
GB10577/41A Expired GB551501A (en) | 1940-10-10 | 1941-08-19 | Improvements in multi-layer colour photography |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB10577/41A Expired GB551501A (en) | 1940-10-10 | 1941-08-19 | Improvements in multi-layer colour photography |
Country Status (3)
Country | Link |
---|---|
US (2) | US2322001A (fr) |
FR (2) | FR919792A (fr) |
GB (2) | GB546704A (fr) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE23357E (en) * | 1939-08-28 | 1951-04-17 | Processes for producing same | |
US2418624A (en) * | 1943-03-02 | 1947-04-08 | Eastman Kodak Co | Azo dyes for color photography |
US2434272A (en) * | 1944-05-03 | 1948-01-13 | Eastman Kodak Co | Color photography with azosubstituted couplers |
US2688542A (en) * | 1949-02-09 | 1954-09-07 | Bela Gaspar | Material and process for the production of color photographic images |
GB711233A (en) * | 1951-08-16 | 1954-06-30 | Geigy Ag J R | Improvements in or relating to colour photography |
US2899305A (en) * | 1957-05-09 | 1959-08-11 | Colour photography | |
US3061433A (en) * | 1958-08-04 | 1962-10-30 | Ilford Ltd | Process and solution for bleaching photographic images |
NL282992A (fr) * | 1961-09-08 | |||
CH511456A (de) * | 1969-07-30 | 1971-08-15 | Ciba Geigy Ag | Verfahren zum Entfernen von metallischem Silber aus photographischem Material |
US4029509A (en) * | 1975-11-17 | 1977-06-14 | E. I. Du Pont De Nemours And Company | Positive process using a low coating weight silver halide |
US4047956A (en) * | 1975-11-17 | 1977-09-13 | E. I. Du Pont De Nemours And Company | Low coating weight silver halide element and process |
JPS5565952A (en) * | 1978-11-13 | 1980-05-17 | Fuji Photo Film Co Ltd | Color image formation method |
-
1940
- 1940-10-10 US US360622A patent/US2322001A/en not_active Expired - Lifetime
-
1941
- 1941-01-21 GB GB812/41A patent/GB546704A/en not_active Expired
- 1941-08-19 GB GB10577/41A patent/GB551501A/en not_active Expired
-
1942
- 1942-06-06 US US446054A patent/US2326055A/en not_active Expired - Lifetime
-
1945
- 1945-08-02 FR FR919792D patent/FR919792A/fr not_active Expired
-
1946
- 1946-08-23 FR FR54933D patent/FR54933E/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR919792A (fr) | 1947-03-18 |
GB551501A (en) | 1943-02-25 |
US2326055A (en) | 1943-08-03 |
US2322001A (en) | 1943-06-15 |
FR54933E (fr) | 1951-04-30 |
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