GB503814A - Improvements in three-colour photographic materials - Google Patents
Improvements in three-colour photographic materialsInfo
- Publication number
- GB503814A GB503814A GB2598/39A GB259839A GB503814A GB 503814 A GB503814 A GB 503814A GB 2598/39 A GB2598/39 A GB 2598/39A GB 259839 A GB259839 A GB 259839A GB 503814 A GB503814 A GB 503814A
- Authority
- GB
- United Kingdom
- Prior art keywords
- emulsion
- gelatine
- layer
- coupling
- yellow
- 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)
- Materials For Photolithography (AREA)
Abstract
503,814. Colour photography. KODAK, Ltd. July 7, 1937, No. 2598 /39. Convention date, July 7, 1936. Divided out of 503,752. [Class 98 (ii)] A three-colour, photographic, element has three silver halide emulsion layers inseparably coated on a single support of which the upper emulsion layer is sensitive to blue-violet light, themiddle emulsion-layer to red and orange light, and the lower emulsion layer to yellow and green light, and is characterized in that each of the emulsions contains a coupling component which is insoluble in water or in aqueous sodium carbonate solution. The coupling components are not more soluble than the most soluble of the following viz: tri-alpha-naphthol triazine, alpha-naphthol-2-carboxylic acid-alpha- (or -#)-naphthylamide, alpha-naphthol-4-benzoyl-ketone, and the hydrazone of the last named, and couple with the oxidation products of the developing agent formed where a silver image is produced by the alkaline coupling developer. The components may have different coupling speeds, one coupling in presence of borax and the other in presence of sodium carbonate. Each emulsion may be treated separately with coupling developers of different coupling speed. The components may be finely dispersed in 10 per cent gelatine solution and the latter added to the gelatine silver halide emulsion. The components may be deposited on or adsorbed by the silver halide grains, or may be formed within the emulsion, preferably after ripening, or may be precipitated in emulsions of low gelatine content and gelatine added, or may be precipitated in centrifuged silver bromide emulsion or in silver bromide separated from a gelatine emulsion and dispersed in water or glycerine or other inert water-miscible liquid, and the resulting material dispersed in gelatine, washed and sensitized. The components may be added in alcoholic alkaline solution to a silver halide emulsion and precipitated by acid. A yellow filter consisting of dyed water- or sodiumcarbonate-soluble colloid, such as dextrine, gum arabio, or stearic acid, may be arranged in front of the top emulsion layer, and a colloidal silver anti-halation layer may be arranged on either side of the support. A primary or reversed sound record may be printed in one, two, or three layers of the material before or after colour processing, or may be in a fourth infra red sensitized layer, in which case printing of the sound record may be effected from the back. Printing may be effected at any stage of the process, after drying the element. A variable area or combined variable densityvariable area sound record may be used. The material may be processed by primary colour development, or by development, fixing, bleaching, and colour development, or by reversal colour development. A yellow filter may be arranged between the top and middle emulsion layers, and,a yellow, a green, or a red-orange filter or a colourless gelatine layer between the middle and the bottom emulsions. The filter colours may be added to the top and the middle emulsion layers. Strongy swelling gelatine is used for the emulsion and filter layers. The emulsion layers may be coated on the support in reverse order and exposed through the support. A highly sensitized collodion emulsion may be used for the bottom emulsion, and the support may be of cellulose acetate, regenerated cellulose, or other synthetic colloid, or a hardened gelatine emulsion, including one in which part of the gelatine is replaced by agar-agar, polyvinyl alcohol or other lessswelling colloids, may be used. The use of peptised and centrifuged silver bromide emulsions is referred to. Elements having top blue-violet sensitive emulsion layer, a middle yellow and green sensitive layer, and a bottom red sensitive layer, and having a top red sensitive layer, a middle yellow-green sensitive layer, and a bottom blue-sensitive layer are referred to. The original latent images may be developed with ferrous oxalate or hydroquinone acetone sulphite, and the residual silver halide made developable by a fogging agent such as thiosinamine. Specifications 376,746, 376,794, 376,795, 440,032, 440,089, 447,092, 499,185, 500,826 (as open to inspection under Sect. 91), 503,752, 503,816, 503,817, 503,818, 503,819, 503,820, 503,821, 503,823, 503,824, 503,825, 503,826, 503,827, 503,940, and 503,941 are referred to.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT503752X | 1936-07-07 | ||
US151811A US2306410A (en) | 1936-07-07 | 1937-07-03 | Color development |
US368667A US2249542A (en) | 1936-07-07 | 1940-12-05 | Rehalogenation process of color photography |
Publications (1)
Publication Number | Publication Date |
---|---|
GB503814A true GB503814A (en) | 1939-04-11 |
Family
ID=32073576
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18824/37A Expired GB503752A (en) | 1936-07-07 | 1937-07-07 | Process of colour photography |
GB2598/39A Expired GB503814A (en) | 1936-07-07 | 1937-07-07 | Improvements in three-colour photographic materials |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18824/37A Expired GB503752A (en) | 1936-07-07 | 1937-07-07 | Process of colour photography |
Country Status (3)
Country | Link |
---|---|
US (1) | US2249542A (en) |
FR (1) | FR834371A (en) |
GB (2) | GB503752A (en) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2732382A (en) * | 1956-01-24 | -chjoh | ||
US2417514A (en) * | 1940-09-23 | 1947-03-18 | Spectrum Products Company Inc | Method and means for producing colored photographic images |
DE972067C (en) * | 1941-02-18 | 1959-05-14 | Agfa Ag | Process for increasing the whiteness of photographic reflective images |
GB577387A (en) * | 1943-04-16 | 1946-05-16 | Du Pont | Improvements in or relating to dyestuff intermediates and their use in colour photography |
US2484477A (en) * | 1943-10-30 | 1949-10-11 | Eastman Kodak Co | Process for making color couplers |
US2453661A (en) * | 1944-05-03 | 1948-11-09 | Eastman Kodak Co | Colored couplers |
BE476360A (en) * | 1944-05-03 | |||
US2418747A (en) * | 1944-05-20 | 1947-04-08 | Gen Aniline & Film Corp | Nondiffusing phenolic color couplers |
US2481476A (en) * | 1945-03-02 | 1949-09-06 | Du Pont | Color yielding photographic elements |
US2498466A (en) * | 1946-05-09 | 1950-02-21 | Gen Aniline & Film Corp | Phenolic color formers |
US2661293A (en) * | 1946-10-08 | 1953-12-01 | Polaroid Corp | Process of producing a colored photographic image by means of exhaustion of developer |
US2569906A (en) * | 1947-12-23 | 1951-10-02 | Gen Aniline & Film Corp | Light-sensitive emulsions containing color formers capable of yielding nonmigratory azine dyestuffs |
US2543338A (en) * | 1948-03-18 | 1951-02-27 | Gen Aniline & Film Corp | Aromatic diamines as coupling components for the formation of photographic azine dyestuff images |
BE491747A (en) * | 1948-10-22 | |||
BE489248A (en) * | 1948-11-05 | |||
DE970007C (en) * | 1953-09-30 | 1958-08-07 | Gevaert Photo Prod Nv | Process for the production of photographic color images by developing a reducible silver salt by means of an aromatic developing substance in the presence of a dye former |
US2983606A (en) * | 1958-07-14 | 1961-05-09 | Polaroid Corp | Processes and products for forming photographic images in color |
JPS51110328A (en) * | 1975-03-24 | 1976-09-29 | Fuji Photo Film Co Ltd | Shashinyokaraakapuraa |
US4141730A (en) * | 1975-04-08 | 1979-02-27 | Fuji Photo Film Co., Ltd. | Multilayer color photographic materials |
US4345023A (en) * | 1978-09-18 | 1982-08-17 | The Academy Of Applied Science, Inc. | Process for increasing the effective speed of photographic films and improved film structures |
-
1937
- 1937-07-07 FR FR834371D patent/FR834371A/en not_active Expired
- 1937-07-07 GB GB18824/37A patent/GB503752A/en not_active Expired
- 1937-07-07 GB GB2598/39A patent/GB503814A/en not_active Expired
-
1940
- 1940-12-05 US US368667A patent/US2249542A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR834371A (en) | 1938-11-18 |
GB503752A (en) | 1939-04-11 |
US2249542A (en) | 1941-07-15 |
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