GB454499A - Improvements in colour photography - Google Patents

Improvements in colour photography

Info

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
Application number
GB9870/35A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to US8517A priority Critical patent/US2059887A/en
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to GB25940/36A priority patent/GB454622A/en
Priority to GB9869/35A priority patent/GB454498A/en
Priority to GB9870/35A priority patent/GB454499A/en
Priority to DEK138457D priority patent/DE678167C/en
Priority to FR803237D priority patent/FR803237A/en
Publication of GB454499A publication Critical patent/GB454499A/en
Expired legal-status Critical Current

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

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.
GB9870/35A 1935-02-27 1935-03-29 Improvements in colour photography Expired GB454499A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US8517A US2059887A (en) 1935-02-27 1935-02-27 Differential treatment of multilayer films
GB25940/36A GB454622A (en) 1935-02-27 1935-03-29 Improvements in colour photography
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
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
FR957565A (en) * 1946-10-16 1950-02-23
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

Cited By (2)

* Cited by examiner, † Cited by third party
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
US2059887A (en) 1936-11-03
FR803237A (en) 1936-09-25
GB454498A (en) 1936-09-29
DE678167C (en) 1939-07-11
GB454622A (en) 1936-09-29

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