GB511800A - Filter-layers for colour photography - Google Patents

Filter-layers for colour photography

Info

Publication number
GB511800A
GB511800A GB606338A GB606338A GB511800A GB 511800 A GB511800 A GB 511800A GB 606338 A GB606338 A GB 606338A GB 606338 A GB606338 A GB 606338A GB 511800 A GB511800 A GB 511800A
Authority
GB
United Kingdom
Prior art keywords
layer
filter
layers
silver
support
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
GB606338A
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.)
Kodak Ltd
Original Assignee
Kodak 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 Kodak Ltd filed Critical Kodak Ltd
Priority to GB606338A priority Critical patent/GB511800A/en
Publication of GB511800A publication Critical patent/GB511800A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/76Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/825Photosensitive materials characterised by the base or auxiliary layers characterised by antireflection means or visible-light filtering means, e.g. antihalation
    • G03C1/8255Silver or silver compounds therefor

Abstract

511,800. Filter layers for colour photography. KODAK, Ltd., and CROWTHER, R. E. Feb. 25, 1938, No. 6063. [Class 98 (ii)] Photographic material more particularly for colour photography includes a filter layer or layers comprising a coloured dispersion of silver sulphide, silver selenide, or silver telluride. Multi layer material comprises a support, a red sensitive layer, a gelatine intermediate layer or a yellow -filter layer, a green sensitive layer, a yellow filter layer and a not specially sensitized blue sensitive layer. The position of the red and green sensitive layers may be interchanged. The emulsion layers may be on one or both sides of the support, and any or all may contain colour formers. The material may comprise a mixed emulsion layer. The filter layers may be applied to lenticular or multicular screen type colour photographic material. A yellow silver sulphide filter layer is prepared by coating a solution of silver nitrate and gelatine in water on to a support, and immersing the coated support in ammoniacal thiourea solution until the desired depth of yellow is reached. The coloured gelatine is washed and stripped from the support, and may be re-melted and treated with a hardening agent. The'production of the filter material may be effected in a vessel instead of on. a support. The filter layer is decolorized by a solution of potassium ferricyanide and sodium thiosulphate, but is not affected by a silver rehalogenizing bath such as a solution containing potassium ferricyanide, ammonia, and potassium bromide. Red, dispersions of silver sulphide, selenide, or telluride may also be made. Specifications 441,325, 500,611, 500,793 and 503,752 are referred The Provisional Specification describes also the use of colloidal sulphur, selenium and tellurium in filter layers.
GB606338A 1938-02-25 1938-02-25 Filter-layers for colour photography Expired GB511800A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB606338A GB511800A (en) 1938-02-25 1938-02-25 Filter-layers for colour photography

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB606338A GB511800A (en) 1938-02-25 1938-02-25 Filter-layers for colour photography
DEK153540D DE723624C (en) 1938-02-25 1939-02-20 Antihalation and filter layer for multilayer photographic material
FR850851D FR850851A (en) 1938-02-25 1939-02-25 Improvements in color photography

Publications (1)

Publication Number Publication Date
GB511800A true GB511800A (en) 1939-08-24

Family

ID=9807745

Family Applications (1)

Application Number Title Priority Date Filing Date
GB606338A Expired GB511800A (en) 1938-02-25 1938-02-25 Filter-layers for colour photography

Country Status (3)

Country Link
DE (1) DE723624C (en)
FR (1) FR850851A (en)
GB (1) GB511800A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2571688A (en) * 1946-11-29 1951-10-16 Ilford Ltd Production of colloidal silver
US2609292A (en) * 1945-07-10 1952-09-02 Ilford Ltd Light-sensitive photographic element and process using it
US2622025A (en) * 1947-04-03 1952-12-16 Ilford Ltd Light-sensitive photographic element and process using it
US2673800A (en) * 1939-11-02 1954-03-30 Gevaert Photo Prod Nv Photographic material for the manufacture of color images
US2759825A (en) * 1948-02-12 1956-08-21 Polaroid Corp Photographic image transfer process

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0366181A3 (en) * 1988-10-26 1990-05-16 AGFA-GEVAERT naamloze vennootschap Silver sulphide sol with ultrafine particle size

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2673800A (en) * 1939-11-02 1954-03-30 Gevaert Photo Prod Nv Photographic material for the manufacture of color images
US2609292A (en) * 1945-07-10 1952-09-02 Ilford Ltd Light-sensitive photographic element and process using it
US2571688A (en) * 1946-11-29 1951-10-16 Ilford Ltd Production of colloidal silver
US2622025A (en) * 1947-04-03 1952-12-16 Ilford Ltd Light-sensitive photographic element and process using it
US2759825A (en) * 1948-02-12 1956-08-21 Polaroid Corp Photographic image transfer process

Also Published As

Publication number Publication date
FR850851A (en) 1939-12-28
DE723624C (en) 1942-08-07

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