GB507211A - Coloured photographic multilayer material - Google Patents
Coloured photographic multilayer materialInfo
- Publication number
- GB507211A GB507211A GB34081/37A GB3408137A GB507211A GB 507211 A GB507211 A GB 507211A GB 34081/37 A GB34081/37 A GB 34081/37A GB 3408137 A GB3408137 A GB 3408137A GB 507211 A GB507211 A GB 507211A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- sensitive
- blue
- yellow
- layers
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/145—Infrared
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
Abstract
507,211. Colour photography. GASPAR, B. Dec. 9, 1937, No. 34081. [Class 98 (ii)] An additional colloid layer is mounted in front of one of several silver halide emulsion layers in a colour photographic material, and contains an acid dyestuff of appropriate colour and resistance to ordinary photographic treating solutions, and an evenly distributed substance which assists in the bleaching of the dye by dye-destroying agents e.g. finely distributed silver, colloidal silver, fogged silver halide emulsion, exposed silver halide or colour sensitized silver halide. The silver halide emulsion layer behind the colloid layer is sensitive to light which is absorbed by the colloid layer but is sensitized to light transmitted by the latter. Two adjacent layers of silver halide emulsion replace each normal single layer of a multilayer, material, one half containing dyestuff sufficient for the most intensely coloured parts of the image, the other half containing the surplus necessary for filtration and either being sensitized e.g. to infra red to allow selective exposure at a later stage, or containing finely divided silver or exposed silver halide. In a three-layer material containing a blue-sensitive front layer dyed magenta and a yellow-dyed green-sensitive layer, the surplus yellow dyestuff is in that half of the layer adjacent the blue-sensitive layer, and is sensitized and exposed to infra red light. If the third layer is a normal blue-sensitive layer, then the surplus yellow dye is on both sides of the green sensitive layer. In another example, a blue-sensitive layer in front of green- or red-sensitive layers contains the surplus yellow dye on the rear part, the emulsion in this part being exposed during the coating operation. The coating operation for each of the layers may be avoided by forming two separate strata in a single dyed emulsion layer by surface illumination. In another example a transparent support carries on one side a yellow-dyed green-sensitized emulsion, a yellow intermediate layer and a blue-sensitive magenta-coloured layer, and on the other side a yellow layer and a blue-green coloured blue-sensitive layer, the dyes used being Milling Yellow, Polar brillantrot and Direct Sky Blue, The yellow auxiliary layers may be exposed emulsions or emulsions sensitized to infra red by cryptocyanine. The auxiliary dyed layers may be used in front of light sensitive layers which are colourless or coloured with a different dyestuff, which layers may also contain colour formers. In another example, the front clement of a bipack has a blue-sensitive layer and a green-sensitive layer separated by an intermediate gelatin layer containing Milling Yellow G and an amount of exposed silver bromide emulsion. After development and fixing the element is dyed by soaking in a 1 per cent solution of Pontamine Sky Blue, and the dyestuffs in the layers are then destroyed by acid thiocarbamide solution or hydrobromic acid and the silver removed by bleaching. The intermediate layer is consequently decolourized and the gelatin is tanned by the bleaching. The film is fixed and dried, and the upper layer treated with sodium hyposulphite solution. The decolourized upper layer is then coloured at the unhardened places by a water soluble dyestuff. Specification 414,998 is referred to.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB34081/37A GB507211A (en) | 1937-12-09 | 1937-12-09 | Coloured photographic multilayer material |
GB34082/37A GB507152A (en) | 1937-12-09 | 1937-12-09 | Light-sensitive multilayer photographic material |
US243886A US2219987A (en) | 1937-12-09 | 1938-12-03 | Multilayer material for color photography and method of making the same |
US243888A US2219988A (en) | 1937-12-09 | 1938-12-03 | Light-sensitive multilayer photographic material and process for making the same |
BE431547D BE431547A (en) | 1937-12-09 | 1938-12-09 | |
FR847292D FR847292A (en) | 1937-12-09 | 1938-12-09 | Multi-layered sensitive material for color photography |
US313121A US2316782A (en) | 1937-12-09 | 1940-01-09 | Process of producing multicolor images |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB34081/37A GB507211A (en) | 1937-12-09 | 1937-12-09 | Coloured photographic multilayer material |
GB34082/37A GB507152A (en) | 1937-12-09 | 1937-12-09 | Light-sensitive multilayer photographic material |
Publications (1)
Publication Number | Publication Date |
---|---|
GB507211A true GB507211A (en) | 1939-06-09 |
Family
ID=26262147
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34082/37A Expired GB507152A (en) | 1937-12-09 | 1937-12-09 | Light-sensitive multilayer photographic material |
GB34081/37A Expired GB507211A (en) | 1937-12-09 | 1937-12-09 | Coloured photographic multilayer material |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34082/37A Expired GB507152A (en) | 1937-12-09 | 1937-12-09 | Light-sensitive multilayer photographic material |
Country Status (4)
Country | Link |
---|---|
US (3) | US2219987A (en) |
BE (1) | BE431547A (en) |
FR (1) | FR847292A (en) |
GB (2) | GB507152A (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2609294A (en) * | 1952-09-02 | Cinematographic matte | ||
US2434272A (en) * | 1944-05-03 | 1948-01-13 | Eastman Kodak Co | Color photography with azosubstituted couplers |
US2567712A (en) * | 1945-06-07 | 1951-09-11 | Du Pont | Element for recording photographic images |
US2428208A (en) * | 1945-06-20 | 1947-09-30 | Eastman Kodak Co | Dichromate bleach bath containing a wetting agent and method of bleaching therewith |
US2511112A (en) * | 1945-09-12 | 1950-06-13 | Du Pont | Process for obtaining color separations from multilayer photographic film |
US2685510A (en) * | 1951-11-14 | 1954-08-03 | Eastman Kodak Co | Sensitive photographic element for use in the silk screen process |
BE552701A (en) * | 1955-12-23 | |||
BE567236A (en) * | 1957-05-15 |
-
1937
- 1937-12-09 GB GB34082/37A patent/GB507152A/en not_active Expired
- 1937-12-09 GB GB34081/37A patent/GB507211A/en not_active Expired
-
1938
- 1938-12-03 US US243886A patent/US2219987A/en not_active Expired - Lifetime
- 1938-12-03 US US243888A patent/US2219988A/en not_active Expired - Lifetime
- 1938-12-09 BE BE431547D patent/BE431547A/xx unknown
- 1938-12-09 FR FR847292D patent/FR847292A/en not_active Expired
-
1940
- 1940-01-09 US US313121A patent/US2316782A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US2316782A (en) | 1943-04-20 |
US2219988A (en) | 1940-10-29 |
BE431547A (en) | 1939-01-31 |
US2219987A (en) | 1940-10-29 |
FR847292A (en) | 1939-10-05 |
GB507152A (en) | 1939-06-09 |
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