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
  • G03C7/26—Silver halide emulsions for subtractive colour processes
• • 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
  • G03C7/46—Subtractive processes not covered by the group G03C7/26; Materials therefor; Preparing or processing such materials

Definitions

• My present invention relates to the production oi colored pictures.
• the present invention is based on the observation that the'constituent .coior pictures can be harmonized to a great extent, if there is formed on a photographic material, having several layers superimposed on each other on one or both sides of a support, one or more partial color pictures by color development with diethyi-para-phenylene-diamine or the like, and other partial color pictures by the silver diazotate process through coupling with an azo dyestufi' component.
• the azo-dyestufi pictures may be obtained, in
• the film to be used in this invention may be built up as follows:
• the first, not specially sensitized layer contains the substantive compound p-saiicyiic acid benzidide.
• the second orthochromatic layer contains, for example, i-(diphenyl) -3-methyl-5-pyrazolone. component i.2-hydroxy-naphthoic acid benzidide.
• the third layer contains as dyestufi August 1'], 1935 layer a red-picture and in the third layer a blue picture. I I i If the latent image is developed with p-dimethylamino-aniline there is produced, besides 1' moi. dyestufi' 4 mols. silver.
• the silver picture is converted in the known manner into a silver salt and this is converted into silver anti-diazotate by means of a soluble anti-diazotate, for instance diphenyl-dianti-diazotate.
• a soluble anti-diazotate for instance diphenyl-dianti-diazotate.
• the liberated diazonium compound couples with the p-salicylic acid benzidide.
• the silver salt remnant in the several layers is removed by fixing so that pure dyestufi. s
• the film may also be developed with aid of an ordinary black and white developer. and fixed. This operation produces a better threshold value than the developer p-dimethyiamino-aniiine and better freedom from fog.
• the silver picture is then convertedinto a silver salt and this salt further developed with p-dimethylamino-aniiine. There is thus produced a silver picture and a dyestun picture.
• the silver is again converted into a salt and, as described above, caused to react .with anti-diazotate..
• the order of the treatments may be rever Further, the silver produced in the black-andwhite development may be dissolved and after a second exposure the residual silver bromide may be developed with p-dimethyl-amino-aniline and the metallic silver thus produced converted in known manner by means of silver anti-diazotate into an azo-dyestufl picture.
• a process of producing a colored photo graphic picture which comprises exposing to,

Landscapes

• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
• Silver Salt Photography Or Processing Solution Therefor (AREA)
• Heat Sensitive Colour Forming Recording (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=7193509

Family Applications (1)

Country Status (5)

• 0
  • NL NL50474D patent/NL50474C/xx active
  • BE BE416920D patent/BE416920A/xx unknown
• 1935
  • 1935-09-13 GB GB25468/35A patent/GB464398A/en not_active Expired
• 1936
  • 1936-08-05 US US94344A patent/US2177632A/en not_active Expired - Lifetime
  • 1936-08-11 FR FR809319D patent/FR809319A/fr not_active Expired

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