GB522190A - Process of colour photography - Google Patents
Process of colour photographyInfo
- Publication number
- GB522190A GB522190A GB16565/39A GB1656539A GB522190A GB 522190 A GB522190 A GB 522190A GB 16565/39 A GB16565/39 A GB 16565/39A GB 1656539 A GB1656539 A GB 1656539A GB 522190 A GB522190 A GB 522190A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dye
- destroyed
- filter
- behind
- dyestuffs
- 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)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
- Optical Filters (AREA)
Abstract
522,190. Colour photography. GASPAR, B. Dec. 5, 1938, No. 16565/39. Divided out of 507,485. [Class 98 (ii)] In a method of producing photographic dye images in a multi layer material comprising both image forming dyes and filter dyes, the filter dye is chemically destroyed during the ordinary development and the image forming dye is afterwards selectively destroyed at either the image or the non image points by a dye destroying agent. On to a paper support are coated in superposition a blue green emulsion sensitized to red light, magenta dyed emulsion sensitized to green and a yellow dyed blue sensitize emulsion. The yellow layer or a gelatin layer behind it contains 1-2 grms. per sq. m. of 4, 4'- methenyl - bis - 1 (p - sulphophenyl) - 3 - methyl - pyrazolene-5 in the form of its triphenylguanidine salt. This dye is easily destroyed by the ordinary metol-hydroquinone developer containing sodium carbonate. The dyestuffs and multi layer materials are described in Specifications 506,385 and 507,485. The material is exposed behind black and white or coloured part images or behind multi colour master positives, and after development and destruction of the filter dyestuff, the dyestuffs are locally destroyed by acid thio-carbamide or 5 per cent. hydrobromic acid. Specification 397,159 also is referred to.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB34080/37A GB507151A (en) | 1937-12-09 | 1937-12-09 | Coloured photographic multilayer material |
| GB34079/37A GB507485A (en) | 1937-12-09 | 1937-12-09 | Photographic light-sensitive material for colour photography |
| GB1656538 | 1938-12-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB522190A true GB522190A (en) | 1940-06-11 |
Family
ID=27257396
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34079/37A Expired GB507485A (en) | 1937-12-09 | 1937-12-09 | Photographic light-sensitive material for colour photography |
| GB34080/37A Expired GB507151A (en) | 1937-12-09 | 1937-12-09 | Coloured photographic multilayer material |
| GB16565/39A Expired GB522190A (en) | 1937-12-09 | 1938-12-05 | Process of colour photography |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34079/37A Expired GB507485A (en) | 1937-12-09 | 1937-12-09 | Photographic light-sensitive material for colour photography |
| GB34080/37A Expired GB507151A (en) | 1937-12-09 | 1937-12-09 | Coloured photographic multilayer material |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2219306A (en) |
| BE (2) | BE431548A (en) |
| DE (1) | DE703260C (en) |
| FR (1) | FR847291A (en) |
| GB (3) | GB507485A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2486680A (en) * | 1949-11-01 | Chime | ||
| US3929487A (en) * | 1966-10-03 | 1975-12-30 | Harbans Singh | Spectral balancing means for color photography |
| CA1039556A (en) * | 1973-11-16 | 1978-10-03 | Dan Neuberger | Hybrid color photographic elements and processes for developing same |
-
1937
- 1937-12-09 GB GB34079/37A patent/GB507485A/en not_active Expired
- 1937-12-09 GB GB34080/37A patent/GB507151A/en not_active Expired
-
1938
- 1938-12-03 US US243890A patent/US2219306A/en not_active Expired - Lifetime
- 1938-12-05 GB GB16565/39A patent/GB522190A/en not_active Expired
- 1938-12-06 DE DE1938703260D patent/DE703260C/en not_active Expired
- 1938-12-09 FR FR847291D patent/FR847291A/en not_active Expired
- 1938-12-09 BE BE431548D patent/BE431548A/xx unknown
- 1938-12-09 BE BE431546D patent/BE431546A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB507151A (en) | 1939-06-09 |
| GB507485A (en) | 1939-06-09 |
| BE431548A (en) | 1939-01-31 |
| FR847291A (en) | 1939-10-05 |
| US2219306A (en) | 1940-10-29 |
| BE431546A (en) | 1939-01-31 |
| DE703260C (en) | 1941-03-05 |
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