GB511800A - Filter-layers for colour photography - Google Patents
Filter-layers for colour photographyInfo
- Publication number
- GB511800A GB511800A GB606338A GB606338A GB511800A GB 511800 A GB511800 A GB 511800A GB 606338 A GB606338 A GB 606338A GB 606338 A GB606338 A GB 606338A GB 511800 A GB511800 A GB 511800A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- filter
- layers
- silver
- support
- 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
- G03C1/00—Photosensitive materials
- G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
- G03C1/825—Photosensitive materials characterised by the base or auxiliary layers characterised by antireflection means or visible-light filtering means, e.g. antihalation
- G03C1/8255—Silver or silver compounds therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Color Television Image Signal Generators (AREA)
Abstract
511,800. Filter layers for colour photography. KODAK, Ltd., and CROWTHER, R. E. Feb. 25, 1938, No. 6063. [Class 98 (ii)] Photographic material more particularly for colour photography includes a filter layer or layers comprising a coloured dispersion of silver sulphide, silver selenide, or silver telluride. Multi layer material comprises a support, a red sensitive layer, a gelatine intermediate layer or a yellow -filter layer, a green sensitive layer, a yellow filter layer and a not specially sensitized blue sensitive layer. The position of the red and green sensitive layers may be interchanged. The emulsion layers may be on one or both sides of the support, and any or all may contain colour formers. The material may comprise a mixed emulsion layer. The filter layers may be applied to lenticular or multicular screen type colour photographic material. A yellow silver sulphide filter layer is prepared by coating a solution of silver nitrate and gelatine in water on to a support, and immersing the coated support in ammoniacal thiourea solution until the desired depth of yellow is reached. The coloured gelatine is washed and stripped from the support, and may be re-melted and treated with a hardening agent. The'production of the filter material may be effected in a vessel instead of on. a support. The filter layer is decolorized by a solution of potassium ferricyanide and sodium thiosulphate, but is not affected by a silver rehalogenizing bath such as a solution containing potassium ferricyanide, ammonia, and potassium bromide. Red, dispersions of silver sulphide, selenide, or telluride may also be made. Specifications 441,325, 500,611, 500,793 and 503,752 are referred The Provisional Specification describes also the use of colloidal sulphur, selenium and tellurium in filter layers.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB606338A GB511800A (en) | 1938-02-25 | 1938-02-25 | Filter-layers for colour photography |
DEK153540D DE723624C (en) | 1938-02-25 | 1939-02-20 | Antihalation and filter layer for multilayer photographic material |
FR850851D FR850851A (en) | 1938-02-25 | 1939-02-25 | Improvements in color photography |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB606338A GB511800A (en) | 1938-02-25 | 1938-02-25 | Filter-layers for colour photography |
Publications (1)
Publication Number | Publication Date |
---|---|
GB511800A true GB511800A (en) | 1939-08-24 |
Family
ID=9807745
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB606338A Expired GB511800A (en) | 1938-02-25 | 1938-02-25 | Filter-layers for colour photography |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE723624C (en) |
FR (1) | FR850851A (en) |
GB (1) | GB511800A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2571688A (en) * | 1946-11-29 | 1951-10-16 | Ilford Ltd | Production of colloidal silver |
US2609292A (en) * | 1945-07-10 | 1952-09-02 | Ilford Ltd | Light-sensitive photographic element and process using it |
US2622025A (en) * | 1947-04-03 | 1952-12-16 | Ilford Ltd | Light-sensitive photographic element and process using it |
US2673800A (en) * | 1939-11-02 | 1954-03-30 | Gevaert Photo Prod Nv | Photographic material for the manufacture of color images |
US2759825A (en) * | 1948-02-12 | 1956-08-21 | Polaroid Corp | Photographic image transfer process |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0366181A3 (en) * | 1988-10-26 | 1990-05-16 | Agfa-Gevaert N.V. | Silver sulphide sol with ultrafine particle size |
-
1938
- 1938-02-25 GB GB606338A patent/GB511800A/en not_active Expired
-
1939
- 1939-02-20 DE DEK153540D patent/DE723624C/en not_active Expired
- 1939-02-25 FR FR850851D patent/FR850851A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2673800A (en) * | 1939-11-02 | 1954-03-30 | Gevaert Photo Prod Nv | Photographic material for the manufacture of color images |
US2609292A (en) * | 1945-07-10 | 1952-09-02 | Ilford Ltd | Light-sensitive photographic element and process using it |
US2571688A (en) * | 1946-11-29 | 1951-10-16 | Ilford Ltd | Production of colloidal silver |
US2622025A (en) * | 1947-04-03 | 1952-12-16 | Ilford Ltd | Light-sensitive photographic element and process using it |
US2759825A (en) * | 1948-02-12 | 1956-08-21 | Polaroid Corp | Photographic image transfer process |
Also Published As
Publication number | Publication date |
---|---|
FR850851A (en) | 1939-12-28 |
DE723624C (en) | 1942-08-07 |
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