US2028279A - Photographic material - Google Patents

Photographic material Download PDF

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Publication number
US2028279A
US2028279A US645313A US64531332A US2028279A US 2028279 A US2028279 A US 2028279A US 645313 A US645313 A US 645313A US 64531332 A US64531332 A US 64531332A US 2028279 A US2028279 A US 2028279A
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US
United States
Prior art keywords
yellow
layer
colored
color
dyestufi
Prior art date
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Expired - Lifetime
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US645313A
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English (en)
Inventor
Gaspar Bela
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Individual
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Individual
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Publication date
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Publication of US2028279A publication Critical patent/US2028279A/en
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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
    • G03C7/28—Silver dye bleach processes; Materials therefor; Preparing or processing such materials

Definitions

  • This invention relates to photographic materials, and more particularly to colored silver halide layers.
  • Silver halide layers have already been proposed, which contain mixtures of dyestuffs, for example one or more sensitizing dyestuffs and a filter dyestuff. These dyestuils, however, incorporated in the layer, have been employed in low concentration and do not serve towards the production of a dyestufi image.
  • red colored layer For example for portrait work in order to ob-' tain proper flesh "color, also for interior work, 5 there is employed for the red colored layer a dyestufi mixture, which contains a rapidly bleaching purple red" and a slowly bleachin orange or yellow.
  • the blue-green dyeemployed for coloring purposes will be, in accordance with 10 the invention, a blackish green. In the bluegreen part of the image'there will be employed a. reddish orange dye in place of the yellow dye, and a blue, which bleaches more readily than the yellow-orange.
  • the desired color combination may be provided in one or more layers.
  • Example orange portion a mixture of dyestuffs containing a rapidly bleaching red and a more slowly 2 bleaching yellow dyestuff.
  • the blue-green layer will contain a dyestufl mixture, in which. the yellow dyestufi bleaches more rapidly than the blue, in view of the fact that this layer is intended for the reproduction 3 of sky and foliage. 0
  • Example -The one layer is colored withAzo Fuchsine and Mordant Yellow GG, the other with Benzo Pure Blu and Metanil Yellow.
  • Two-color films may be produced in fantastic colors Zemployed, Iorexample-for advertising purposes or in leisure scenes.
  • the one layer contains a mixture of red and violet dyestuif andis'colored purple-mauve.
  • the other layer is colored yellow-green and contains a yellow and a blue-green dyestufi.
  • the layers are sensitized in respect of rays, which are allowed to pass by-the dyestufi employedior coloring the layer, and under certain circumfstances for rays whichare allowed to pass by the layersituatecl thereover.
  • the layers are then exposed, developed and subsequently treated, for example according to the method described in my prior Patent N0.'2,020,775, patented November 12, 1935.
  • Fig. 1 represents across-section through a developed and fixed photographic layer.
  • ABC and DEF are two silver deposits. This layer is colored blue (vertical shading) and yellow (horizontal shading). The two dyestufls are diffusely distributed so that prior to the destruction of the dyestufi the layer appears green;
  • Fig. 2 shows a cross-section after the destruction of the dyestufi at the points of the silver image proportional to the quantity of silver present (A'BC and DE'Ff)- Below the broken line all yellow has been destroyed and onlyblue remains. Above the broken line, in the neighbourhood of the silver all yellow has been destroyed, while at the center, at the points indicated by the horizontal shading, yellow still remains. This part, therefore, is agreen-blue.
  • A'C'GH is colored blue, GID'E' is also GHI is yellow and blue, i. e. green.
  • the treatment of the exposed material may, however, also be such that, for example, the layer is hardened by tanning development or blue subsequent'tanning. and this layer subjected tothe action of a solvent, as set forth by Schinzel in the Chemikerzeitung, 1908, page 667.
  • the procedure in the selection of the dyestuffs will be such that in place of the dyestuffs of different bleaching rapidity variously soluble or variously reacting dyestuffs will be employed.
  • the dyestufis employed may be identified by reference to Schultz Dyestufi Tables, 5th Edition, 1920.
  • the index numbers for the particular colors herein specified are as follows: Py-
  • a color-photographic material comprising a silver halide emulsion having incorporated therein differently colored dvestufis having varying powers of resistance to the effect of the agent serving locally to discharge the said dyestuffs for production of the color image.
  • a color-photographic material comprising a silver halide emulsion having incorporated therein difierently colored dyestuffs adapted to bleach with varying rapidity under the action of I an oxidizing agent serving locally-to produce the color image.
  • a color-photographic material comprising a silver halide emulsion having incorporated therein differently colored dyestufis adapted to bleach withvarying rapidity under the action of a reducing agent serving locally to produce the color image.
  • a photographic material comprising a support having thereon a homogeneously colored sensitized silver halide emulsion containing different colored dyestuffs in high concentration and of difierent stability with respect to a reducing agent.
  • a photographic material comprising a support having thereon a plurality of layers of homogeneously colored sensitized silverhalide emulsion, each containing a diflerently colored dyestufi in high concentration and of diflerent stability with respect to a common reducing agent.
  • a photographic material comprising a support having thereon a plurality of layers of homogeneously colored-sensitized silver halide emulsion, one layer containing a red dyestufl mixture comprising rapidly bleaching purple and red and a slowly bleaching yellow in high concentration and another layer containing a bluegreen dyestufi mixture also in ,high concentra-' tion and containing a reddish orange and a blue BELA GASPAR.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Coloring (AREA)
US645313A 1931-12-03 1932-12-01 Photographic material Expired - Lifetime US2028279A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG81302D DE680688C (de) 1931-12-03 1931-12-03 Verfahren zur Herstellung photographischer Farbstoffbilder

Publications (1)

Publication Number Publication Date
US2028279A true US2028279A (en) 1936-01-21

Family

ID=31889000

Family Applications (1)

Application Number Title Priority Date Filing Date
US645313A Expired - Lifetime US2028279A (en) 1931-12-03 1932-12-01 Photographic material

Country Status (5)

Country Link
US (1) US2028279A (en, 2012)
BE (1) BE392736A (en, 2012)
DE (1) DE680688C (en, 2012)
FR (1) FR746644A (en, 2012)
GB (1) GB412950A (en, 2012)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2568208A (en) * 1947-02-17 1951-09-18 Fraunhofer Hans Von Color photography
US2628902A (en) * 1947-04-29 1953-02-17 Raibourn Paul Process of producing colored photographs
US2667414A (en) * 1947-04-29 1954-01-26 Raibourn Paul Light-sensitive color photographic film
US2698342A (en) * 1948-11-05 1954-12-28 Gaspar Acylated derivatives of amino-sulfonic acids and method for their preparation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4047956A (en) * 1975-11-17 1977-09-13 E. I. Du Pont De Nemours And Company Low coating weight silver halide element and process
US4029509A (en) * 1975-11-17 1977-06-14 E. I. Du Pont De Nemours And Company Positive process using a low coating weight silver halide

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2568208A (en) * 1947-02-17 1951-09-18 Fraunhofer Hans Von Color photography
US2628902A (en) * 1947-04-29 1953-02-17 Raibourn Paul Process of producing colored photographs
US2667414A (en) * 1947-04-29 1954-01-26 Raibourn Paul Light-sensitive color photographic film
US2698342A (en) * 1948-11-05 1954-12-28 Gaspar Acylated derivatives of amino-sulfonic acids and method for their preparation

Also Published As

Publication number Publication date
BE392736A (en, 2012) 1933-01-31
GB412950A (en) 1934-07-02
FR746644A (fr) 1933-06-01
DE680688C (de) 1939-09-06

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