US2704711A - Photographic color correction - Google Patents

Photographic color correction Download PDF

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Publication number
US2704711A
US2704711A US296175A US29617552A US2704711A US 2704711 A US2704711 A US 2704711A US 296175 A US296175 A US 296175A US 29617552 A US29617552 A US 29617552A US 2704711 A US2704711 A US 2704711A
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United States
Prior art keywords
color
forming
coupler
layer
light
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 - Lifetime
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US296175A
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English (en)
Inventor
Jr Wesley T Hanson
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
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Eastman Kodak Co
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Filing date
Publication date
Priority to BE521045D priority Critical patent/BE521045A/xx
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to US296175A priority patent/US2704711A/en
Priority to DEE7445A priority patent/DE968641C/de
Priority to GB17735/53A priority patent/GB726377A/en
Priority to FR1085984D priority patent/FR1085984A/fr
Application granted granted Critical
Publication of US2704711A publication Critical patent/US2704711A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • G03C7/18—Processes for the correction of the colour image in subtractive colour photography

Definitions

  • This invention relates to photography and particularly to a method for securing color correction in color trans parencies used for printing.
  • the cyan dye which should absorb red light and transmit green and blue light usually absorbs a small amount of green and blue light as well as a major proportion of red light.
  • the magenta dye which should absorb green light and transmit blue and red light usually absorbs a considerable amount of blue light and a small amount of red light.
  • the yellow dye which should absorb blue light and transmit green and red light is usually satisfactory although sometimes it absorbs a small amount or" green light.
  • the result of printing a multi-color picture formed of such dyes is to introduce unequal parts of all three records in each image which is made, regardless of the color of light used in printing or the sensitivity of the printing material employed. Correction of the colors on printing is therefore desirable, and this is usually done by masking, as described in prior patents, such as Evans U. S. Patent 2,203,653, granted June 4, 1940, and my prior Patent 2,294,981, granted September 8, 1942.
  • a further object is to provide a novel integral masking film and process.
  • a still further object is to provide a masking method in which the yellow dye image may be masked without coloring the bluesensitive emulsion layer prior to development.
  • an uncolored image-forming coupler in the emulsion layer in the usual way and also incorporating in the layer packets or particles of water-insoluble colloid containing physical development nuclei and an uncolored masking coupler.
  • a negative O-o 0011.0 ONE dye image is formed from the image-forming coupler and at the same time a positive masking image is formed from the masking coupler by physical development of the dissolved silver halide positive image on the physical development nuclei.
  • gelatino-silver halide emulsions and colorless coupler are employed.
  • the dyes formed from these couplers are not perfect in light absorption characteristics but absorb some light in regions in which absorption is undesirable.
  • the cyan dye absorbs a major proportion of light in the red spectral region and a minor proportion of light in the green and blue spectral regions.
  • the magenta dye absorbs a major proportion of light in the green spectral region and a minor proportion of light in the blue spectral region.
  • the yellow dye absorbs a major proportion of light in the blue spectral region and a minor proportion of light in the green spectral region.
  • couplers used according to my invention may be incorporated in the emulsion as described in Mannes and Godowsky U. S. Patent 2,304,940 or Jelley and Vittum U. S. Patent 2,322,027, or they may be directly incorporated as described in Fisher U. S. Patent 1,102,028.
  • Packets or particles containing the masking coupler are made from a colloidal material which is insoluble in water at or below room temperature and in the gelatin of the emulsion.
  • the preferred colloid is a styrenemaleic anhydride resin which has been amidated and converted to the ammonium salt as described in Examples 2 and 3 of Godowsky U. S. application Serial No. 156,066, filed April 15, 1950.
  • styrene-maleic acid or anhydride polymers or copolymers may be used as well as polymers of styrene with other cap-unsaturated carboxylic acids such as styrene-acrylic acid, styrenemethacrylic acid and styrene-itaconic acid, algin, oxidized cellulose, polymethyl acrylic acid, polyethyl acrylic acid (Godowsky U. S. Patent 2,548,526), and hardened gelatin (Baines et al., U. S. Patent 2,618,553) may also be used.
  • I styrene-maleic acid or anhydride polymers or copolymers
  • the physical development nuclei include colloidal silver, gold and silver sulfide.
  • the masking coupler or couplers may be present in one or more of the layers of a three-layer coating.
  • yellow, magenta and cyan layers I mean the layers in which the yellow, magenta and cyan image-forming dyes, either negative or positive, are formed by development after exposure.
  • the masking couplers may be present in one, two or all three of the emulsion layers. Also, the couplers in one or two of the layers may be colored couplers as described in my U. S.
  • Patent 2,449,966 and the other layer or layers may contain a dispersed colorless masking coupler according to the present invention.
  • colored couplers might be used for masking purposes in the cyan and magenta layers and a colorless masking coupler in the yellow layer as described in the present application.
  • magenta coupler dispersion was made by dissolving 22 grams of the coupler 1-(2',4',6'-trichlorophenyl)- 3-[3"-(2"',4"'-di-tert. amylphenoxyacetamido) benzamidoJ-S-pyrazolone in 64 cc. of dibutylphthalate at 150 0., adding the solution to 45 cc. of a 5% solution of Alkanol B dispersing agent in 326 cc. of 10% gelatin solution and dispersing it therein.
  • a concentrated dispersion of colloidal silver in gelatin was made and 31.2 grams of the colloidal silver dispersion and 112 grams of the magenta coupler dispersion were added to 62.3 grams of 10% gelatin solution, and then cc. of a 15% solution of a copolymer of methacrylic acid and methyl-u-methacrylate (sodium salt) were added to the mixture and the mixture was stirred at 40 C. for thirty minutes.
  • Example 2 A film was made by coating on the usual cellulose ester film support successive layers of red-sensitive emulsion containing cyan coupler and green-sensitive emulsion containing magenta coupler made as described in example col. 6 of my prior Patent 2,449,966, but using as the cyan coupler Z-(diamylphenoxyacetamino)-4,6- dichloro-S-methylphenol and as the magenta coupler 1 (p tert. butylphenoxy) phenyl 3 a- (p-tert. butylphenoxypropionylamino)-5-pyrazolone.
  • the green-sen sitive layer containing the magenta coupler was followed by a layer of colloidal silver in gelatin and a blue-sensitive layer made as described in Example 1.
  • a color-developing solution containing a silver halide solvent for example, a solution of the following composition:
  • the films are fixed, washed, bleached, fixed and washed in the usual way.
  • the developing solution above contains a high content of sodium sulfite which acts as the silver halide solvent.
  • Other silver halide solvents which may be used include sodium thiosulfate, ammonium thiosulfate, amines, such as ethylenediamine, isopropyl amine etc.
  • the developer may be made up as a dry composition using potassium, lithium, or sodium benzyl carbonate instead of benzyl alcohol. Potassium benzyl carbonate,
  • a support 10 of any suitable material such as glass, cellulose ester or paper has on it a redsensitive emulsion layer 11 containing a cyan-forming coupler, a green-sensitive emulsion layer 12 containing a magenta-forming coupler, a yellow filter layer 13 and a blue-sensitive emulsion layer 14 containing yellowforming coupler and also containing packets or particles 15 of colloidal material containing colloidal silver and magenta-forming coupler.
  • this material Upon exposure of this material to white light as indicated, followed by color development in a color developer containing a silver halide solvent and removal of the silver and silver halide, the element appears as shown in the second stage of the drawing.
  • the bottom emulsion layer contains a cyan negative image 16
  • the middle emulsion contains a magenta negative image 17
  • the top emulsion layer contains a yellow negative image 18.
  • the particles 15 in the exposed portions of the top layer form no image because the silver halide is used up in forming the image 18 in the exposed regions of the layer.
  • a magenta image 19 is formed in the dispersed particles containing the magenta-forming coupler by physical development as described above.
  • a positive magenta image 19 is formed in conjunction with a yellow negative image 18 in the top emulsion ayer.
  • An integrally masked, color-forming photographic emulsion layer comprising a silver halide emulsion sensitive to the blue region of the visible spectrum, containing a dispersion of a color coupler capable of forming upon color development with a primary aromatic amine developing agent a yellow dye image which absorbs a major proportion of blue light and a minor proportion of green light, and individual packets of the ammonium salt of styrene-maleamic acid resin containing colloidal silver and a color coupler capable of forming upon coupling with the developer oxidation product of said primary aromatic amino developing agent a magenta dye absorbing said green light but absorbing no substantial amount of said blue light.
  • a multi-layer photographic element comprising a support having thereon three silver halide emulsion layers sensitive respectively to the red, green and blue spectral regions, said red-sensitive layer containing a dispersion of a color coupler capable of forming a cyan dye image upon color development with a primary aromatic amino developing agent, said green-sensitive layer containing a color coupler capable of forming a magenta dye image upon color development with a primary aromatic amino developing agent and said blue-sensitive layer containing a dispersion of a color coupler capable of forming upon color development with a primary aromatic amino developing agent a yellow dye image which absorbs a major proportion of blue light and a minor proportion of green light, and individual packets of the ammonium salt of styrene-maleamic acid resin containing colloidal silver and a color coupler capable of forming upon coupling with the developer oxidation product of said primary aromatic amino developing agent a magenta dye absorbing said green light but absorbing no substantial amount of said blue light.
  • the method of forming a corrected color separation image in a color-forming photographic emulsion layer which comprises exposing to an image a silver halide emulsion sensitive to a primary color region of the visible spectrum containing a dispersion of a color coupler capable of forming upon color development with a primary aromatic amino developing agent a yellow dye image which absorbs a major proportion of blue light and a minor proportion of green light and individual packets of the ammonium salt of styrene-malearnic acid resin containing colloidal silver and a color coupler ca pable of forming upon coupling with.
  • the developer oxidation product of said primary aromatic amino developing agent a magenta dye absorbing green light but absorbing no substantial amount of blue light, to form exposed and unexposed portions of said layer, developing said layer in an alkaline solution containing a primary aromatic amino developing agent and a silver halide solvent to form a negative dye image from said first-mentioned coupler in the exposed regions of said layer and a positive dye image from said second-mentioned coupler in the unexposed regions of said layer.
  • the method of forming a corrected color separation image in a color-forming photographic emulsion layer which comprises exposing to an image a silver halide emulsion sensitive to a primary color region of the visible spectrum containing a dispersion of a color coupler capable of forming upon color development with a primary aromatic amino developing agent a yellow dye image which absorbs a major proportion of blue light and a minor proportion of green light and individual packets of the ammonium salt of styrene-maleamic acid resin containing colloidal silver and a color coupler capable of forming upon coupling with the developer oxidation product of said primary aromatic amino developing agent a magenta dye absorbing green light but absorbing no substantial amount of blue light, to form exposed and unexposed portions of said layer, developing said layer in an alkaline solution containing a primary aromatic amino developing agent and approximately 40 grams per liter of sodium sulfite as a silver halide solvent to form a negative dye image from said first-mentioned coupler in the exposed. regions of said

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
US296175A 1952-06-28 1952-06-28 Photographic color correction Expired - Lifetime US2704711A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE521045D BE521045A (en(2012)) 1952-06-28
US296175A US2704711A (en) 1952-06-28 1952-06-28 Photographic color correction
DEE7445A DE968641C (de) 1952-06-28 1953-06-25 Verfahren zur Herstellung von farbwertkorrigierten Farbenteilbildern in farbenphotographischen Halogensilberemulsionen
GB17735/53A GB726377A (en) 1952-06-28 1953-06-26 Method of and sensitive elements for securing colour correction in colour photography
FR1085984D FR1085984A (fr) 1952-06-28 1953-06-27 Nouveaux produits pour la photographie en couleurs et procédé pour leur mise en oeuvre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US296175A US2704711A (en) 1952-06-28 1952-06-28 Photographic color correction

Publications (1)

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US2704711A true US2704711A (en) 1955-03-22

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US296175A Expired - Lifetime US2704711A (en) 1952-06-28 1952-06-28 Photographic color correction

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US (1) US2704711A (en(2012))
BE (1) BE521045A (en(2012))
DE (1) DE968641C (en(2012))
FR (1) FR1085984A (en(2012))
GB (1) GB726377A (en(2012))

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2860979A (en) * 1955-04-26 1958-11-18 Eastman Kodak Co Azo dyes as filters in color photography
US2895825A (en) * 1954-03-18 1959-07-21 Agfa Ag Production of photographic colour images with heterocyclic developers
US2908573A (en) * 1956-07-25 1959-10-13 Eastman Kodak Co Photographic color couplers containing mono-n-alkyl groups
US2920961A (en) * 1957-07-29 1960-01-12 Eastman Kodak Co Couplers for color photography
US3015561A (en) * 1957-03-15 1962-01-02 Polaroid Corp Novel photographic color processes and products
US3087817A (en) * 1956-10-03 1963-04-30 Polaroid Corp Process and product for forming color images from complete dyes
US3844784A (en) * 1971-09-30 1974-10-29 Fuji Photo Film Co Ltd Reversal multi-layer color photographic materials
US4842976A (en) * 1982-01-18 1989-06-27 Mead Corp. Color image-forming process
US5032496A (en) * 1987-07-02 1991-07-16 Konica Corporation Light-sensitive color photographic material having superior color reproducibility
US20150023657A1 (en) * 2013-07-16 2015-01-22 Robert J. Crowley Instant photography with ordinary shell film

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR873507A (fr) * 1939-11-02 1942-07-10 Gevaert Photo Prod Nv Procédé pour l'obtention d'images au moyen d'halogénure d'argent
FR900266A (fr) * 1942-12-05 1945-06-25 Gevaert Photo Prod Nv Procédé pour la production d'images photographiques partielles corrigées

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE830611C (de) * 1948-10-26 1952-02-07 Bayer Ag Verfahren zur Erzeugung von Masken in farbenphotographischen Materialien

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR873507A (fr) * 1939-11-02 1942-07-10 Gevaert Photo Prod Nv Procédé pour l'obtention d'images au moyen d'halogénure d'argent
FR53515E (fr) * 1939-11-02 1946-03-04 Gevaert Photo Prod Nv Procédé pour l'obtention d'images au moyen d'halogénure d'argent
FR53513E (fr) * 1939-11-02 1946-03-04 Gevaert Photo Prod Nv Procédé pour l'obtention d'images au moyen d'halogénure d'argent
FR900266A (fr) * 1942-12-05 1945-06-25 Gevaert Photo Prod Nv Procédé pour la production d'images photographiques partielles corrigées
GB634169A (en) * 1942-12-05 1950-03-15 Gevaert Photo Prod Nv Improvements in or relating to the production of corrected photographic colour-component

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2895825A (en) * 1954-03-18 1959-07-21 Agfa Ag Production of photographic colour images with heterocyclic developers
US2860979A (en) * 1955-04-26 1958-11-18 Eastman Kodak Co Azo dyes as filters in color photography
US2908573A (en) * 1956-07-25 1959-10-13 Eastman Kodak Co Photographic color couplers containing mono-n-alkyl groups
US3087817A (en) * 1956-10-03 1963-04-30 Polaroid Corp Process and product for forming color images from complete dyes
US3015561A (en) * 1957-03-15 1962-01-02 Polaroid Corp Novel photographic color processes and products
US2920961A (en) * 1957-07-29 1960-01-12 Eastman Kodak Co Couplers for color photography
US3844784A (en) * 1971-09-30 1974-10-29 Fuji Photo Film Co Ltd Reversal multi-layer color photographic materials
US4842976A (en) * 1982-01-18 1989-06-27 Mead Corp. Color image-forming process
US5032496A (en) * 1987-07-02 1991-07-16 Konica Corporation Light-sensitive color photographic material having superior color reproducibility
US20150023657A1 (en) * 2013-07-16 2015-01-22 Robert J. Crowley Instant photography with ordinary shell film

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Publication number Publication date
GB726377A (en) 1955-03-16
DE968641C (de) 1958-03-13
BE521045A (en(2012))
FR1085984A (fr) 1955-02-08

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