GB376838A - Improvements in processes for the production of colour photographs - Google Patents
Improvements in processes for the production of colour photographsInfo
- Publication number
- GB376838A GB376838A GB15226/32A GB1522632A GB376838A GB 376838 A GB376838 A GB 376838A GB 15226/32 A GB15226/32 A GB 15226/32A GB 1522632 A GB1522632 A GB 1522632A GB 376838 A GB376838 A GB 376838A
- Authority
- GB
- United Kingdom
- Prior art keywords
- colour
- layer
- layers
- bleached
- developer
- 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
- G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
376,838. Colour photography. MANNES, L. D., 111, East 81st Street, and GODOWSKY, L., 8, West 76th Street. both in New York, U.S.A. Jan. 16, 1931, No. 15226/32. Convention date, March 19. 1930. Divided on 376.795. [Class 98 (ii).] Colour photographs are produced by exposing two or more superimposed differently sensitized layers, developing and fixing the images, bleaching them and redeveloping them with developers containing different substances which are capable of combining in the presence of reduced silver with the reactive products of the developer to form coloured compounds. The bleaching may be accomplished by controlled diffusion of potassium ferricyanide, the top layer and each successive layer being bleached and redeveloped with a colourdeveloper independently. Alternatively the layers may be simultaneously bleached, the upper layer or layers then redeveloped by controlled diffusion of developer, and the undeveloped bleached lower layer then developed with a developer containing a colour former. After fixing and washing the film, the upper layer or layers are then rebleached for a similar sequence of controlled development and colour development of another layer. The silver in the picture can then be eliminated. Specific examples of colour-formers and developers a e given. An example is also given of a process in which a red and green sensitive emulsion are superimposed, the colour-sensitizer near the upper surface being removed by using an alcoholic solution of a yellow dye, giving a thin upper blue sensitive layer, for a particular reflection printing process.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US437267A US1954452A (en) | 1930-03-19 | 1930-03-19 | Method of making color photographs |
Publications (1)
Publication Number | Publication Date |
---|---|
GB376838A true GB376838A (en) | 1932-07-18 |
Family
ID=23735743
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB15226/32A Expired GB376838A (en) | 1930-03-19 | 1931-01-16 | Improvements in processes for the production of colour photographs |
Country Status (5)
Country | Link |
---|---|
US (1) | US1954452A (en) |
BE (1) | BE376782A (en) |
DE (1) | DE616941C (en) |
FR (1) | FR709707A (en) |
GB (1) | GB376838A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE969811C (en) * | 1938-12-18 | 1958-07-17 | Agfa Ag | Process for the production of multicolor cinematographic images with sound recording |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL49147C (en) * | 1935-04-10 | |||
DE759108C (en) * | 1935-10-03 | 1952-10-27 | Ig Farbenindustrie Ag | Process for the production of multicolor images with the aid of multilayer films by color development |
US2567712A (en) * | 1945-06-07 | 1951-09-11 | Du Pont | Element for recording photographic images |
BE466319A (en) * | 1945-07-23 | |||
US2571725A (en) * | 1946-08-15 | 1951-10-16 | Eastman Kodak Co | Eliminating stain in photographic color material |
US2705200A (en) * | 1950-11-15 | 1955-03-29 | Gen Aniline & Film Corp | Bipack color film containing nondiffusing color formers and processing thereof |
BE536088A (en) * | 1954-03-05 |
-
0
- BE BE376782D patent/BE376782A/xx unknown
- DE DENDAT616941D patent/DE616941C/de active Active
-
1930
- 1930-03-19 US US437267A patent/US1954452A/en not_active Expired - Lifetime
-
1931
- 1931-01-16 GB GB15226/32A patent/GB376838A/en not_active Expired
- 1931-01-20 FR FR709707D patent/FR709707A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE969811C (en) * | 1938-12-18 | 1958-07-17 | Agfa Ag | Process for the production of multicolor cinematographic images with sound recording |
Also Published As
Publication number | Publication date |
---|---|
US1954452A (en) | 1934-04-10 |
FR709707A (en) | 1931-08-12 |
DE616941C (en) | |
BE376782A (en) |
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