GB777583A - Colour photographic process - Google Patents

Colour photographic process

Info

Publication number
GB777583A
GB777583A GB21231/54A GB2123154A GB777583A GB 777583 A GB777583 A GB 777583A GB 21231/54 A GB21231/54 A GB 21231/54A GB 2123154 A GB2123154 A GB 2123154A GB 777583 A GB777583 A GB 777583A
Authority
GB
United Kingdom
Prior art keywords
formaldehyde
colour
sulphite
dyestuff
july
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
GB21231/54A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB21231/54A priority Critical patent/GB777583A/en
Priority to US522817A priority patent/US2885288A/en
Priority to DEI10455A priority patent/DE1017027B/en
Priority to FR1127836D priority patent/FR1127836A/en
Publication of GB777583A publication Critical patent/GB777583A/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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/268—Processing baths not provided for elsewhere, e.g. pre-treatment, stop, intermediate or rinse baths
    • 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
    • G03C7/3046—Processing baths not provided for elsewhere, e.g. final or intermediate washings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

777,583. Colour photographic process. BESWICK, G. E., GANGUIN, K. O., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 13, 1955 [July 21, 1954], No. 21231/54. Class 98(2) An exposed multilayer or multi-particle differentially sensitized gelatino-silver halide material containing colour formers is treated with an alkaline solution of formaldehyde and an inorganic sulphite after colour development, treatment which arrests development and hardens the gelatin, thus differentiating from acid solutions of formaldehyde which are not effective as gelatin hardening agents; and having the further advantage that in the presence of the sulphite the formaldehyde does not react with developer amine to form an insoluble aldehyde-anil. The invention is further described with reference to Specifications 698,046 and 723,171 which use a yellow styryl dye-colour former for masking purposes in the magenta layer, and the latter of which uses colour formers in the cyan layer which are phenols and 1 - naphthols unsubstituted in the 4 position to the OH group, whereby unused colour former and an amine as of the developer react with formaldehyde to produce the leuco form of reddish dyestuff and which latter is oxidized to dyestuff in the bleaching bath to constitute a masking image in such cyan layer. The solution for the purpose comprises formaldehyde, sodium sulphite, sodium bicarbonate, sodium carbonate and potassium bromide. Substances such a hypo can be added is desired.
GB21231/54A 1954-07-21 1954-07-21 Colour photographic process Expired GB777583A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB21231/54A GB777583A (en) 1954-07-21 1954-07-21 Colour photographic process
US522817A US2885288A (en) 1954-07-21 1955-07-18 Colour photographic process
DEI10455A DE1017027B (en) 1954-07-21 1955-07-21 Process for interrupting development in the production of color photographic images
FR1127836D FR1127836A (en) 1954-07-21 1955-07-21 Color photography process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21231/54A GB777583A (en) 1954-07-21 1954-07-21 Colour photographic process

Publications (1)

Publication Number Publication Date
GB777583A true GB777583A (en) 1957-06-26

Family

ID=10159402

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21231/54A Expired GB777583A (en) 1954-07-21 1954-07-21 Colour photographic process

Country Status (4)

Country Link
US (1) US2885288A (en)
DE (1) DE1017027B (en)
FR (1) FR1127836A (en)
GB (1) GB777583A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4197080A (en) * 1979-02-14 1980-04-08 Eastman Kodak Company Radiation-cleavable nondiffusible compounds and photographic elements and processes employing them
US4363869A (en) * 1980-08-19 1982-12-14 Hutchinson Jr Robert E Photographic developing process
US5037725A (en) * 1989-12-11 1991-08-06 Eastman Kodak Company Process for stabilizing photographic elements

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2476544A (en) * 1944-11-17 1949-07-19 Gen Aniline & Film Corp Antistain agents for silver bleach solutions
US2518686A (en) * 1945-11-08 1950-08-15 Gen Aniline & Film Corp Aldehyde antistain baths for developed color photographic material
US2475134A (en) * 1945-11-08 1949-07-05 Gen Aniline & Film Corp Sulfite antistain bath for multilayer color film
BE484428A (en) * 1947-08-18
BE490657A (en) * 1948-08-13
US2733143A (en) * 1949-07-16 1956-01-31 Multilayer color film for integral
US2647057A (en) * 1950-10-31 1953-07-28 Pavelle Color Inc Protecting color pictures exposed to high humidities against fading and staining
BE507220A (en) * 1950-11-20
DE895407C (en) * 1950-11-20 1953-11-02 Ici Ltd Method of color correction in color photography
GB723171A (en) * 1952-10-11 1955-02-02 Ici Ltd Process for colour photography

Also Published As

Publication number Publication date
FR1127836A (en) 1956-12-26
US2885288A (en) 1959-05-05
DE1017027B (en) 1957-10-03

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