GB480291A - Colour photography and kinematography - Google Patents
Colour photography and kinematographyInfo
- Publication number
- GB480291A GB480291A GB1060237A GB1060237A GB480291A GB 480291 A GB480291 A GB 480291A GB 1060237 A GB1060237 A GB 1060237A GB 1060237 A GB1060237 A GB 1060237A GB 480291 A GB480291 A GB 480291A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver
- images
- colour
- developing
- iodide
- 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
- G03C7/26—Silver halide emulsions for subtractive colour processes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
480,291. Colour photography. TRUECOLOUR FILM, Ltd., DOLGORUKI, E. SANDERS-, and REINDORP, J. H. April 14, 1937, No. 10602. Addition to 480,287. [Class 98 (ii)] Differently coloured images are produced in exposed superimposed silver halide emulsion layers or strata by developing both images to silver, bleaching both images to colour-developable silver salt images, converting the upper image into silver iodide, colour-developing the lower image, and colouring the upper image in any suitable manner, for instance by dyetoning, or by applying a coloured colloid layer and treating the material in a bleach-hardening bath or by converting the silver iodide to another colour-developable silver salt and colour-developing. The silver images may be bleached to silver ferrocyanide by an ammoniacal potassium ferricyanide bath and the upper image converted to silver iodide by an iodine - potassium iodide bath containing glycerine, followed by a sodium sulphite stop bath. The silver developed in the lower layer is removed prior to colouring the upper layer by bleaching to silver ferrocyanide and dissolving out the latter by sodium sulphite solution. Material with two layers on one side and one on the other is processed by developing, bleaching all the images to silver ferrocyanide images, and differentially processing the twolayer side by flotation, or by applying varnish to the single layer side, or by applying the iodine solution by a roller. Alternatively, the image on the single-layer side may be also converted into silver iodide, the lower image on the two-layer side colour-developed and the silver iodide images re-converted into silver ferrocyanide and differentially colour-developed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1060237A GB480291A (en) | 1937-04-14 | 1937-04-14 | Colour photography and kinematography |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1060237A GB480291A (en) | 1937-04-14 | 1937-04-14 | Colour photography and kinematography |
Publications (1)
Publication Number | Publication Date |
---|---|
GB480291A true GB480291A (en) | 1938-02-21 |
Family
ID=9970867
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1060237A Expired GB480291A (en) | 1937-04-14 | 1937-04-14 | Colour photography and kinematography |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB480291A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2636821A (en) * | 1950-05-05 | 1953-04-28 | Gen Aniline & Film Corp | Process of rendering undevelopable the silver halides present in an outer layer of multilayer color film |
-
1937
- 1937-04-14 GB GB1060237A patent/GB480291A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2636821A (en) * | 1950-05-05 | 1953-04-28 | Gen Aniline & Film Corp | Process of rendering undevelopable the silver halides present in an outer layer of multilayer color film |
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