GB454499A - Improvements in colour photography - Google Patents
Improvements in colour photographyInfo
- Publication number
- GB454499A GB454499A GB9870/35A GB987035A GB454499A GB 454499 A GB454499 A GB 454499A GB 9870/35 A GB9870/35 A GB 9870/35A GB 987035 A GB987035 A GB 987035A GB 454499 A GB454499 A GB 454499A
- Authority
- GB
- United Kingdom
- Prior art keywords
- colour
- alcohol
- quinone
- methyl
- isopropyl alcohol
- 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
-
- 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)
- Pyridine Compounds (AREA)
Abstract
454,499. Colour photography. KODAK, Ltd., Kingsway, London.-(Eastman Kodak Co. ; 343, State Street, Rochester, New York, U.S.A.) March 29, 1935, No. 9870. Addition to 427,520. [Class 98 (ii)] In the method of processing a photographic element consisting of several superimposed layers containing different colour separation records in silver salt, on a single support as in the parent Specification, which includes developing all the layers to one colour and bleaching the upper layers with an agent capable of destroying the colour and transforming the silver into a developable salt and in which loading agents are used to control the diffusion of the bleaching agent, the loading agents are substances which produce an anti-swelling effect either by increasing the viscosity of the solution of rendering it repellent to the gelatin. Suitable agents for the process are sugar, water soluble cellulose derivatives, higher alcohols containing more than two carbon atoms such as normal and isopropyl alcohol, butyl alcohol or amyl alcohol, ketones such as acetone, alkyl- or alkyloxy-amines acetylated or not, e.g. methyl-, ethyl-, propyl- or triethanolamine, acetamide, N-methyl acetamide, polyhydric alcohols such as glycol, ethylene. or propylene glycol, glycerol, or dihydroxyethylether, colloids, e.g. gelatin, gum, glue, dextrin, gum arabic, gum tragacanth, flour, or arrowroot, and inert salts such as sodium chloride and potassium sulphate. Examples are given of bleach baths containing (1) quinone, methyl alcohol, HC1, sugar, and sodium chloride; (2) quinone, HC1, glycerin, and isopropyl alcohol; and (3) quinone, HC1, and ethylene glycol ; and of a stop bath of sodium bicarbonate, glycerin, and isopropyl alcohol. Specifications 427,472, 427,518, 440,032, 440,089, 447,092, and 454,498 are referred to.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8517A US2059887A (en) | 1935-02-27 | 1935-02-27 | Differential treatment of multilayer films |
GB9869/35A GB454498A (en) | 1935-02-27 | 1935-03-29 | Improvements in colour photography |
GB25940/36A GB454622A (en) | 1935-02-27 | 1935-03-29 | Improvements in colour photography |
GB9870/35A GB454499A (en) | 1935-02-27 | 1935-03-29 | Improvements in colour photography |
DEK138457D DE678167C (en) | 1935-02-27 | 1935-07-02 | Process for carrying out the continuous diffusion of treatment baths for the development of multilayer films that remain unseparated |
FR803237D FR803237A (en) | 1935-02-27 | 1936-02-27 | Process for differentiated treatment of films or films with several layers of emulsions |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8517A US2059887A (en) | 1935-02-27 | 1935-02-27 | Differential treatment of multilayer films |
GB9869/35A GB454498A (en) | 1935-02-27 | 1935-03-29 | Improvements in colour photography |
GB9870/35A GB454499A (en) | 1935-02-27 | 1935-03-29 | Improvements in colour photography |
Publications (1)
Publication Number | Publication Date |
---|---|
GB454499A true GB454499A (en) | 1936-09-29 |
Family
ID=27255437
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB25940/36A Expired GB454622A (en) | 1935-02-27 | 1935-03-29 | Improvements in colour photography |
GB9869/35A Expired GB454498A (en) | 1935-02-27 | 1935-03-29 | Improvements in colour photography |
GB9870/35A Expired GB454499A (en) | 1935-02-27 | 1935-03-29 | Improvements in colour photography |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB25940/36A Expired GB454622A (en) | 1935-02-27 | 1935-03-29 | Improvements in colour photography |
GB9869/35A Expired GB454498A (en) | 1935-02-27 | 1935-03-29 | Improvements in colour photography |
Country Status (4)
Country | Link |
---|---|
US (1) | US2059887A (en) |
DE (1) | DE678167C (en) |
FR (1) | FR803237A (en) |
GB (3) | GB454622A (en) |
Cited By (2)
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 |
EP0008144A1 (en) * | 1978-08-14 | 1980-02-20 | EASTMAN KODAK COMPANY (a New Jersey corporation) | Bleach-fix sheet |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2439901A (en) * | 1941-12-27 | 1948-04-20 | Henry T Neumann | Method for producing colored photographs |
US2543179A (en) * | 1942-03-13 | 1951-02-27 | Polaroid Corp | Developer for dichroic iodine images |
US2507183A (en) * | 1945-03-23 | 1950-05-09 | Eastman Kodak Co | Silver bleach for color materials |
US2428208A (en) * | 1945-06-20 | 1947-09-30 | Eastman Kodak Co | Dichromate bleach bath containing a wetting agent and method of bleaching therewith |
US2454001A (en) * | 1945-11-08 | 1948-11-16 | Gen Aniline & Film Corp | Control of contrast with aromatic diamine color developers |
US2529981A (en) * | 1945-11-28 | 1950-11-14 | Eastman Kodak Co | Bleaching silver images |
US2661293A (en) * | 1946-10-08 | 1953-12-01 | Polaroid Corp | Process of producing a colored photographic image by means of exhaustion of developer |
BE476660A (en) * | 1946-10-16 | |||
US2612447A (en) * | 1947-01-13 | 1952-09-30 | Raibourn Paul | Photographic processing |
US2567401A (en) * | 1947-04-18 | 1951-09-11 | Raibourn Paul | Process of producing colored photographs |
US2647056A (en) * | 1948-02-12 | 1953-07-28 | Polaroid Corp | One step photographic transfer process |
DE941340C (en) * | 1950-07-11 | 1956-04-05 | C Schleussner Fotowerke G M B | Process for color development of light-sensitive films containing diffusion-resistant color formers with the aid of color developers |
US2767649A (en) * | 1952-02-15 | 1956-10-23 | Technicolor Motion Picture | Method of printing pictures by imbibition |
US3137575A (en) * | 1960-11-01 | 1964-06-16 | Du Pont | Photographic silver halide emulsions and elements containing a polyfructose |
-
1935
- 1935-02-27 US US8517A patent/US2059887A/en not_active Expired - Lifetime
- 1935-03-29 GB GB25940/36A patent/GB454622A/en not_active Expired
- 1935-03-29 GB GB9869/35A patent/GB454498A/en not_active Expired
- 1935-03-29 GB GB9870/35A patent/GB454499A/en not_active Expired
- 1935-07-02 DE DEK138457D patent/DE678167C/en not_active Expired
-
1936
- 1936-02-27 FR FR803237D patent/FR803237A/en not_active Expired
Cited By (2)
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 |
EP0008144A1 (en) * | 1978-08-14 | 1980-02-20 | EASTMAN KODAK COMPANY (a New Jersey corporation) | Bleach-fix sheet |
Also Published As
Publication number | Publication date |
---|---|
GB454498A (en) | 1936-09-29 |
GB454622A (en) | 1936-09-29 |
US2059887A (en) | 1936-11-03 |
DE678167C (en) | 1939-07-11 |
FR803237A (en) | 1936-09-25 |
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