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
  • G03C7/32—Colour coupling substances
  • G03C7/3212—Couplers characterised by a group not in coupling site, e.g. ballast group, as far as the coupling rest is not specific

Definitions

• This invention relates to color photography and molecule of a dyestufl intermediate product sub-' more particularly to a new and improved photostituents which areradicals of hyclro-eromatic or graphic material for color forming development. mixed aromatic-hydroaromatic or hydrogenated In the manufacture of color transparencies and heterocyclic compounds. Such compounds are for raphy it has been proposed to use silver halide 2:4-.-diamino-4-cyclohexyl diphenyl-ether, l-cy emulsions containing dyestufi components.
• the dyestufi component with certain developers by color forming develop may be united to a body of this kind with the ment.
• the several rings may also contain one the coupling components the light-sensitive lay or more of the substituents disclosed in the U. S. ers have been isolated from each other by interpatents and U. S. patent applications referred m mediate layers. it has been shown, however. that to above. These substituents have already e.
• the component may also be 535
• cycloheryl phenyl hydrazine and ethyl eceto A iurther object is the provision or silver halide acetate.
• the dyestuff components used in the invention w components fast to ditlusion. may be added to the emulsion at any point of its
• a further object is the provision of silver halide production.
• the silver halide emulsions thus on emulsions having, incorporated the new dyestuff teined are especially suitable for the purpose of, components fast to ciifiusion in a dissolved form.
• color photographyand may be made into layers
• the emulsion layers specification followinghereaiter. used in the invention may be combined with other The present invention is based on a process in layers in which-the color picture is producedby which especially useful dyestuil formers fast to a diflerent process, for example by mordantdyediffusion 'are obtained by introducing intmtho in: or by toning.
• the emulsion lay- 88 2,179,244 and U. S. applications ers of the invention may be combined with other layers which contain other dyestufl formers fast to difiusion, as described in the U. S. patent applications cited hereunder.
• the colored pictures may be produced in various manners, for example by the processes of U. S. Patents 2,179,228, 2,179,238, 2,178,612 and Serial No. 94,340 filed August 5, 1936, Ser. No. 141,093 filed May 6, 1937, Ser. No. 159,518 filed August 17, 1937 and Ser. No. 164,499 filed September 18, 1937.
• the components located in multi-layer film may be converted into azo-dyes following development and fixing by such as a carbonic acid benzidine disul'fonic acid.
• the film is then treated with a silver bleaching out bath, i. e. that described in British Patent 401,340 to produce the dye image.
• the exposed emulsion layers may be developed by a simple color forming development or by a reversal development as described in U. S. Patent 2,179,234.
• the pictures may also be produced in multi-layer material, each layer containing one solution of tetrazotized of said dyestufi components by exposing the material, developing to black and white in for instance Amidol, dissolving silver from the negative so produced by bleaching in for example a chromic acid bath, forming images in the remaining silver halide, developing in a developer such as is used above, forming silver halide images by treatment in a bleaching bath 1.
• NELQ 0 Ha I l A silver halide emulsion which has received an of this body and has been worked up in manner similar to that described in Example 1' produces in the first case a red and in the second case a yellow dyestufi picture.
• a silver halide emulsion for color photography containing a dyestufi component for color forming development having attached thereto an amino group one hydrogen atom of which is substituted by the radical of an :'organic carboxylic acid having at least two organic rings one of which at least is hydrogenated said carboxylic acid radical being capabl of rendering said dyestufi component fast to difiusion in said silver halide emulsion.
• a silver halide gelatine emulsion for color photography containing a dyestufi component for -color forming development having attached thereto by an acid amide linkage a group having at least 2,6-membered isocyclic rings linked together by a direct nuclear carbon to nuclear carbon linkage, at least one of said rings being hydrogenated, said group being capable of rendering said dyestufi component fast to diffusion in said silver halide emulsion.
• a silver halide gelatine emulsion for color photography containing a dyestufl component for color forming development having attached thereto by an acid amide linkage a group having 2 fused rings, one of which is heterocyclic and one of which is hydrogenated, said group being capable of rendering said dyestuff component fast to diifusion in said silver halide emulsion.
• a silver halide gelatlne emulsion for color photography containing a dyestufi component for color forming development fast to diffusion in said silver halide emulsion, said dyestuif component being the condensation product of ethylbenzoyl acetate with 4-amino-phenyl-4'-cyclohexylbenzene.
• a silver halide gelatineemulsion for color photography containing a dyestufl component for fused rings is a color forming development which is fast to diflusion in said silver halide emulsion, said dyestufi component being a condensation product of 1-aminophenyl-3-methyl-5-pyrazolone with 4- cyclohexyl-benzoic acid chloride.
• a silver halide gelatineemulsion for color photography containing a dyestufi component for color forming development which is fast to diffusion in said silver halide emulsion, said dyestufi component being the condensation product of 2.3-hydroxy carbazole carboxylic acid chloride with 6-N-ethyl-aminotetrahydroquinoline.

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

Applications Claiming Priority (1)

Publications (1)

Family

ID=7194406

Family Applications (1)

Country Status (5)

Cited By (4)

• 0
  • NL NL58563D patent/NL58563C/xx active
  • BE BE425268D patent/BE425268A/xx unknown
• 1937
  • 1937-11-18 US US175285A patent/US2186719A/en not_active Expired - Lifetime
  • 1937-12-16 FR FR830878D patent/FR830878A/fr not_active Expired
  • 1937-12-16 CH CH213625D patent/CH213625A/de unknown

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