EP0044812B1 - Procédé pour la formation d'images positives masquées en couleur selon le procédé de blanchiment des couleurs à l'argent et matériau photographique pour le procédé de blanchiment des couleurs à l'argent utilisé dans ce procédé - Google Patents

Procédé pour la formation d'images positives masquées en couleur selon le procédé de blanchiment des couleurs à l'argent et matériau photographique pour le procédé de blanchiment des couleurs à l'argent utilisé dans ce procédé Download PDF

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Publication number
EP0044812B1
EP0044812B1 EP81810290A EP81810290A EP0044812B1 EP 0044812 B1 EP0044812 B1 EP 0044812B1 EP 81810290 A EP81810290 A EP 81810290A EP 81810290 A EP81810290 A EP 81810290A EP 0044812 B1 EP0044812 B1 EP 0044812B1
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EP
European Patent Office
Prior art keywords
layer
silver
dye
silver halide
emulsion
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EP81810290A
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German (de)
English (en)
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EP0044812A2 (fr
EP0044812A3 (en
Inventor
Herbert Mollet
Dieter Dr. Wyrsch
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Novartis AG
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Ciba Geigy AG
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Publication of EP0044812A2 publication Critical patent/EP0044812A2/fr
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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
    • G03C7/28—Silver dye bleach processes; 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
    • G03C7/18—Processes for the correction of the colour image in subtractive colour photography

Definitions

  • the present invention relates to a method for producing masked positive color images by the silver color bleaching method and the silver color bleaching material used in this method.
  • Photographic processes for producing colored images or for reproducing colored templates work practically exclusively on the subtractive principle.
  • three layers lying on top of one another are used on a transparent or opaque support, each of which contains a partial image in the subtractive basic colors of cyan, purple and yellow. It is thus possible to reproduce all color tones within the color space determined by the three primary colors.
  • the image dyes With a suitable choice of the image dyes, the colors occurring in nature or original can be satisfactorily reproduced with regard to tonal value and saturation. A prerequisite for this is a favorable mutual coordination within the triple dye and a high saturation of the individual primary colors.
  • This so-called secondary color density does not in itself prevent the reproduction of all color and brightness values occurring within the color space; however, it has the consequence that a change in the color density within a color layer, as can be achieved by known photographic processes with the aid of a correspondingly sensitized silver halide emulsion, affects both the main color density and the secondary color density. This results in undesirable color shifts and saturation losses, which significantly disturb the color fidelity when reproducing a template.
  • Secondary color densities are basically present in all three subtractive primary colors: yellow (main absorption in blue) in red and green, purple (main absorption in green) in red and blue and blue-green (main absorption in red) in green and blue.
  • the secondary color densities of the purple dyes in blue and red, and also the secondary color density of the cyan dye in blue, are particularly strong and therefore disturbing.
  • the secondary color density of the cyan dye in green is somewhat less disturbing, and to a lesser extent those of the yellow dye in red and green. As a result, the reproduction of pure blue and red tones in photographic color materials is always associated with difficulties.
  • a material in which a layer with development nuclei is arranged between a first layer with a dye whose undesired secondary color density is to be corrected and a second dye whose main color density corresponds to the secondary color density of the first dye, the first Dye is an iodide-containing, while the second dye is assigned an iodide-free or low-iodide silver halide emulsion.
  • a silver halide solvent e.g. thiosulfate
  • the unexposed and undevelopable silver halide formed a soluble complex that reduced to the silver layer on the interlayer to metallic silver. If the silver halide emulsion assigned to the first dye is now exposed, iodide ions form in the subsequent development at the image locations, which likewise migrate into the germ layer and at the relevant locations prevent silver accumulation from the complex. A silver image is formed in the seed layer, which is opposite to the silver image belonging to the first dye. This is used in the subsequent bleaching process to bleach the second dye, which creates the desired masking effect. A further development of this method is described in German Offenlegungsschrift 2,831,814.
  • a very insensitive emulsion and possibly a stabilizer or development retardant are added to the germ layer.
  • the reaction mechanism in the creation of the mask image remains the same; however, the insensitive silver halide emulsion in the seed layer acts as an additional silver supplier that also reacts to the immigrating iodide ions.
  • this is not a physical, but a normal chemical development, i. H.
  • the silver attached to the development seed does not come from the developer solution or the silver complex dissolved therein, but directly from the crystal which contains the latent image seed.
  • it is necessary to adapt the beginning and the speed of the development to the diffusion rate of the iodide ions. This can be achieved either by a preferably substantive development inhibitor present in the layer, by a diffusion-inhibiting shell surrounding the veiled silver halide crystal or by a combination of both measures.
  • Silver halide emulsions the veiled silver halide crystals of which are surrounded by a diffusion-inhibiting shell, can be produced in a particularly simple manner using the known core-shell technique.
  • Such emulsions are particularly suitable for use in a masking layer of a photographic material for the silver color bleaching process.
  • the present invention also relates to the new photographic silver color bleaching material for carrying out the process according to the invention.
  • the silver halide shell to be applied can consist of the same or a different silver halide as the core.
  • the radius ratio of the core to the shell can also be varied within wide limits, particles which have a shell thickness that is relatively small in relation to the core diameter being primarily suitable for the present invention.
  • the core-shell technique makes it possible to carry out the usual surface-influencing photographic operations, such as, for example, on the silver halide crystals to be coated.
  • B. German Offenlegungsschrift 2 260 117 or E. Moisar and S. Wagner, Ber. Bunsen Society 67, 356 (1963) ].
  • Another way of influencing the start of development of the core-veiled core-shell emulsions is to choose different concentrations of an ammonium or alkali metal sulfite in the developer solution.
  • the kinetics of spontaneous development can be controlled within wide limits by means of the sulfite concentration (2 to 100 g per liter of developer solution).
  • the start and speed of the development process can also be influenced by the use of development-retarding substances.
  • development-retarding substances can be adsorbed on the veiled surface of the core before the shell grows.
  • Suitable development inhibitors and retarders are e.g. B. benzotriazole, 2-mercaptobenzothiazole, N-methyl mercaptotriazole, phenyl mercaptotetrazole, triazolinedolizine and their derivatives.
  • An important condition is that the solubility product of the silver salt formed from the development retarder is between that of the silver chloride and that of the silver iodide (see A. B. Cohen et al. In Photographic Sci. And Eng. 9, 96, (1965)).
  • the core of a core-shell particle is obscured by conventional methods, e.g. B. by diffuse exposure or with the usual chemical agents such.
  • the veiled emulsion (3) spontaneously develops to maximum density; the green-sensitized emulsion (1) remains unexposed and only develops up to the haze level (A z ).
  • the yellow layer (4) assigned to the pre-veiled emulsion is practically completely bleached out, the purple layer remains unaffected (A 3 ).
  • the green-sensitive emulsion (1) is gradually exposed according to the wedge.
  • Development (C 2 ) produces iodide ions proportional to the exposure, which diffuse into the pre-veiled emulsion layer (3) above and inhibit spontaneous, exposure-independent development there. This creates a silver image in the opposite direction to the image in the lower emulsion layer (3).
  • a dye image remaining in the magenta layer (1) is in the same direction as the original, and in the yellow layer (4) an opposite image (C 3 ).
  • the thickness and silver halide concentration of the pre-fogged emulsion layer will be adjusted so that even at maximum, i.e. H. in the case of a completely unexposed lower emulsion layer, only that part of the yellow layer which corresponds to the maximum secondary color density in blue of the unbleached purple layer is bleached away.
  • the scheme of the layer arrangement shows only the general case in which the dye and the associated emulsion sensitized in the complementary color of the basic color are in the same layer. Of course, these assembled components can also be distributed over two or even three different, adjacent layers.
  • Such layer arrangements are e.g. B. have been described in German CffenIlegungsschriften 2,036,918, 2,132,835 and 2,132,836. They are used primarily to influence the relatively steep gradation in silver color bleaching materials or to increase sensitivity.
  • a silver halide emulsion which is assigned to a dye layer is to be understood as an emulsion which, after exposure and development, provides a silver image which, in the subsequent color bleaching process, produces a counter-rotating dye image in a known manner in the assigned dye layer.
  • the emulsion is spectrally sensitized so that its maximum sensitivity corresponds to the absorption maximum of the assigned image dye (is sensitive in the area of the complementary color of the image dye).
  • a trichromatic material with which the entire visible color spectrum can be reproduced can then be produced in a known manner from three such dye-emulsion pairs.
  • it is also possible to sensitize an emulsion assigned to a dye in another spectral range as is the case, for example, in the B. is common in infrared-sensitive false color films.
  • the sensitized silver halide emulsions assigned to the individual image dyes can be in the same layer as the associated image dyes or partially in a layer adjacent to the dye layer.
  • Adjacent layers are to be understood as layers which, due to their mutual position, promote the exchange of chemical species - molecules or ions.
  • the term therefore also encompasses layers which are not immediately adjacent, but are optionally separated from one another by one or more thin layers which do not hinder diffusion.
  • Silver color bleaching materials for reproducing colored originals are generally trichromatic and contain three layers of color, one each in the subtractive primary colors yellow, purple and teal. To achieve special effects, materials with other colors or with only two layers of color can also be used. Otherwise, the yellow, purple and cyan dyes known per se for this purpose can be used as image dyes in combination with the appropriate spectral sensitizers.
  • Bleachable dyes which are suitable for the preparation of dye-containing silver halide emulsions for the silver color bleaching material are described, for example, in US Pat. Nos. 3,454,402.3,443,953.3 804 630.3 716 368.3 877 949.3 623 874.3 931 142 and 4,051,123.
  • the material can also have additional layers in which at least one of the two components image dyes and silver halide is at least partially missing.
  • silver halide emulsions those are normally used which contain silver chloride, bromide or iodide or mixtures of these halides.
  • Silver halide emulsions containing iodide normally contain between 0.1 and 10, preferably 1 to 5 mole percent silver iodide, the rest consists of silver chloride and / or bromide (e.g. 0 to 99.9 mole percent silver chloride and 0 to 99.9 mole percent silver bromide).
  • Contain iodide-free silver halide emulsions preferably silver chloride, silver bromide or a silver chloride-silver bromide mixture.
  • Gelatin is usually used as a protective colloid to prepare these emulsions; however, other water-soluble protective colloids such as polyvinyl alcohol or polyvinyl pyrrolidone, etc. can also be used; furthermore, part of the gelatin can be replaced by dispersions of non-water-soluble high-molecular substances.
  • water-soluble protective colloids such as polyvinyl alcohol or polyvinyl pyrrolidone, etc.
  • part of the gelatin can be replaced by dispersions of non-water-soluble high-molecular substances.
  • Common is z. B. the use of dispersion polymers from angled-unsaturated compounds such as acrylic acid esters, vinyl esters and vinyl ethers, vinyl chloride, vinylidene chloride and from other mixtures and copolymers.
  • Intermediate layers generally contain only pure binder, e.g. B. gelatin and no dye that contributes to the formation of a color image, or no silver halide. If it is favorable for the overall layer structure, an existing emulsion layer or a filter layer can optionally also serve as a separation layer.
  • the separating layer can also contain other additives, such as substances which inhibit color bleaching, additional binders, such as, for example.
  • B. contain water-soluble colloids or water-soluble dispersion polymers, also the usual additives for the construction of the other photographic layers such as plasticizers, wetting agents, light stabilizers, filter dyes or curing agents.
  • the emulsions can be applied to conventional supports for photographic recording material.
  • a mixture of several colloids can be used to disperse the silver halides.
  • the carrier can consist, for example, of pigmented cellulose triacetate or polyester. If it is made of paper felt, it must be coated on both sides or coated with polyethylene.
  • the light-sensitive layers are located on at least one side of this support, preferably in the known arrangement, i. H. a red sensitized silver halide emulsion layer containing a blue-green azo dye, a green sensitized silver halide emulsion layer containing a purple azo dye and a blue sensitive silver halide emulsion layer containing a yellow azo dye.
  • the material can also contain sub-layers, intermediate layers, filter layers and protective layers. The total thickness of the layers when dry should not exceed 20 ⁇ m.
  • the exposed silver color bleaching materials are processed in the customary manner and include silver development, color bleaching, silver bleaching and fixation and subsequent rinsing or, if appropriate, also rinsing (see, for example, DE-OS 2 448 443). Color bleaching and silver bleaching, and possibly also fixation, can be combined in a single treatment step.
  • Baths of conventional composition can be used for silver development, e.g. B. those that contain hydroquinone as the developer, if desired additionally 1-phenyl-3-pyrazolidone, but no silver complexing agent. It may also be advantageous if the silver developing bath, as described in Swiss Patent 405 929, additionally contains a color bleaching catalyst.
  • Color bleaching baths - provided that the color bleaching is carried out as a separate treatment step - are advantageously those which, in addition to a strong acid, a water-soluble iodide and an antioxidant for the iodide, contain a color bleaching catalyst.
  • Combined color and silver color bleaching baths usually contain a water-soluble oxidizing agent in addition to the specified components.
  • Suitable color bleaching catalysts are primarily diazine compounds, e.g. B. derivatives of pyrazine, quinoxaline or phenazine. You are e.g. B. in German patent application 2 010 280, 2 144 298 and 2 144 297, in French patent specification 1 489 460, in US patent specification 2 270 118, and in DT-OS 2 448 442.
  • Strong acids are to be understood here as those which give the color bleach bath or the combined color and silver bleach bath a pH value of at most 2. So it can.
  • hydrochloric acid phosphoric acid and especially sulfuric acid or sulfamic acid can be used.
  • Alkali iodides such as potassium iodide or sodium iodide can be used as the water-soluble iodide.
  • Suitable oxidizing agents are nitroso compounds, such as. B. p-nitrosodimethylaniline, nitro compounds such as. B. aromatic nitro compounds and preferably aromatic mono- or dinitrobenzenesulfonic acids, e.g. B. m-nitrobenzenesulfonic acid.
  • Reductones or water-soluble mercapto compounds are advantageously used as antioxidants.
  • Suitable reductones are in particular aci-reductones with a 3-carbonyl-endiol (1,2) grouping such as reductin, triose reductone or preferably ascorbic acid.
  • Suitable mercapto compounds are those of the formula HSA (B) m , in which A is an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic bridge member, B is a water-solubilizing radical and m is an integer of at most 4 (DE-OS 2 258 076, 2 423 819).
  • the silver fixing bath can be composed in a known and customary manner.
  • Suitable as a fixative is, for. B. sodium thiosulfate or advantageously ammonium thiosulfate, if desired with additives such as sodium bisulfite, sodium metabisulfite and / or ammonium bisulfite and optionally complexing agents such as ethylenediaminetetraacetic acid.
  • All treatment baths can contain other common additives such as. B. contain hardening agents, wetting agents, optical brighteners or UV protection agents.
  • the processed copy shows a positive purple image, which runs in the same direction as the exposure wedge, and on top of which is superimposed a decreasing yellow image.
  • the measured analytical color densities are shown in Table 1 below. They show how the material according to the invention works.
  • the core-shell emulsion is produced in the same way as in Example 1;
  • the edge length of the cubic silver halide crystals is 0.9 ⁇ m.
  • Two variants are selected for the production of the crystal shells: A) shell thickness 0.01 ⁇ m and B) shell thickness 0.02 ⁇ m.
  • the intermediate image effect measured by the gradation of the opposite yellow image, can be greatly influenced by a suitable choice of the shell thickness of the veiled core-shell emulsion.
  • This example relates to a photographic material according to the present invention, in which hydroquinone is incorporated as a developer in a concentration of 1 g / m 2 in the layers.
  • the material is produced in the manner described in Example 1, except that an emulsion of 95 mol% silver bromide and 5 mol% silver iodide is used for layer a).
  • an activation bath of the following composition is used instead of a developer:
  • Example 1 The further processing, consisting of a combined color and silver bleaching, fixation and final washing, is carried out as in Example 1.
  • the processed material shows a purple image that runs in the same direction as the exposure wedge and an opposite increase in density of the yellow dye.
  • This example illustrates the development kinetics in the core-shell emulsion depending on the sulfite content of the developer.
  • Example 2 a photographic material with three layers is produced on an opaque support, but using a core-shell emulsion whose cubic crystals have an edge length of 0.55 ⁇ m and an AgBr shell thickness of 0.015 ⁇ m. 6 mg of 1-phenyl-5-mercaptotetrazole per g of silver are used as development retardants.
  • the counter gradation of the yellow image can be influenced by the sulfite content in the developer.
  • the numerical values in the table mean analytical densities at the specified wavelength.
  • a sample of this material is exposed through a step wedge (A) polychromatic, (B) with blue and (C) with green light and processed as follows:

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Claims (11)

1. Procédé pour la formation d'images en couleurs positives masquées selon le procédé de blanchiment des couleurs à l'argent par exposition à la lumière d'un matériau photographique pour le procédé de blanchiment des couleurs à l'argent, le développement de l'argent, le blanchiment des couleurs, le blanchiment de l'argent, et le fixage, le blanchiment de l'argent pouvant être effectué simultanément éventuellement avec le blanchiment des couleurs et/ou avec le fixage dans un seul bain de traitement, et le matériau photographique contenant
a) dans au moins une couche au moins un premier colorant, pour lesquel doit être compensée au moins une densité spectrale secondaire non désirée,
b) dans la (les) couche(s) a) et/ou dans une couche voisine de cette couche (et dans chacune de ces couches) une émulsion à l'halogénure d'argent contenant du iodure associée à ce (ces) colorant(s),
c) dans au moins une autre couche, au moins (par couche) un deuxième colorant dont la densité spectrale principale correspond à la densité spectrale secondaire ou aux densités spectrales secondaires à compenser du (des) premier(s) colorant(s), et
d) dans la (les) couche(s) c) et/ou dans une couche voisine de celle-ci (celles-ci) une émulsion à l'halogénure d'argent sans iodure, ou contenant peu de iodure comparativement aux émulsions mentionnées en b), associée à ce (ces) colorant(s), ce procédé étant caractérisé par le fait que le matériau photographique contient
e) dans la (les) couche(s) c) et/ou dans au moins une autre couche qui est voisine de la (des) couche(s) c), et qui est séparée d'une ou plusieurs couches a) par au moins une couche intermédiaire, une émulsion noyau-enveloppe sans iodure ou contenant peu de iodure, dont les particules sont constituées par un noyau d'halogénure d'argent voilé en surface et d'une enveloppe d'halogénure d'argent non voilée entourant ce noyau, cette émulsion pouvant être développée spontanément jusqu'à la densité maximale par action d'un développateur et contenant éventuellement un retardateur de développement, et par le fait que le développement s'effectue dans une solution de développateur exempte de complexants de l'argent.
2. Procédé selon la revendication 1, caractérisé par le fait que le noyau d'une particule noyau-enveloppe est constitué par du bromure d'argent ou par du chlorobromure d'argent contenant au maximum 20% en mole de chlorure d'argent et au maximum 1,0 % en mole de iodure d'argent, et qu'il est voilé, avant l'application de l'enveloppe, par une exposition à la lumière préalable ou par un traitement chimique.
3. Procédé selon les revendications 1 et 2, caractérisé par le fait que l'enveloppe d'une particule noyau-enveloppe voilée sur le noyau, constituée d'un halogénure d'argent non voilé a une épaisseur comprise entre 5 et 100 nm et qu'elle est constituée par le même ou un autre halogénure d'argent que celui du noyau.
4. Procédé selon les revendications 1 à 3, caractérisé par le fait que après le voilage, mais avant l'application de l'enveloppe, le cristal d'halogénure d'argent est traité éventuellement avec un retardateur de développement.
5. Procédé selon la revendication 1, caractérisé par le fait qu'on dispose dans le matériau photographique entre la couche e), qui contient l'émulsion noyau-enveloppe voilée au préalable et la couche b) contenant une émulsion à l'halogénure d'argent contenant du iodure, au moins une couche intermédiaire qui ne contient ni de colorant d'image ni d'halogénure d'argent.
6. Procédé selon la revendication 1, caractérisé par le fait que les émulsions à l'halogénure d'argent associées aux colorants d'image présentent des sensibilités spectrales dans les couleurs complémentaires respectives du colorant d'image.
7. Procédé selon la revendication 1, caractérisé par le fait que le matériau photographique présente des couches supplémentaires dans lesquelles, parmi les deux constituants, le colorant d'image et l'halogénure d'argent, il en manque au moins un au moins en partie.
8. Procédé selon la revendication 1 à 7, caractérisé par le fait que les émulsions à l'halogénure d'argent sensibilisées associées à chacun des colorants d'image se trouvent dans la même couche que les colorants d'images correspondants ou bien se trouvent en partie dans une couche voisine de la couche de colorants.
9. Procédé selon les revendications 1 à 8, caractérisé par le fait que les émulsions renfermant du iodure d'argent contiennent 0 à 99,9 % en mole de chlorure d'argent, 0 à 99,9 % en mole de bromure d'argent et 0,1 à 10, de préférence 1 à 5 % en mole, de iodure d'argent.
10. Procédé selon les revendications 1 à 9, caractérisé par le fait que en vue de régler la cinétique du développement dans le développateur, on utilise 2 à 100 g d'un sulfite de métal alcalin ou d'ammonium par litre de solution de développateur.
11. Matériau photographique pour le procédé de blanchiment des couleurs à l'argent servant à la formation d'images en couleurs positives masquées qui contient
a) dans au moins une couche au moins un premier colorant, dont au moins une densité spectrale secondaire non désirée doit être compensée,
b) dans la (les) couche(s) a) et/ou dans une couche voisine de cette couche (et dans chacune des couche) une émulsion à l'halogénure d'argent contenant du iodure associé à ce (ces) colorant(s),
c) dans au moins une autre couche au moins (par couche) un deuxième colorant dont la densité spectrale principale correspond à la densité spectrale secondaire ou aux densités spectrales secondaires à compenser du (des) premier(s) colorant(s), et
d) dans la (les) couche(s) c) et/ou dane une couche voisine de celle-ci (de celles-ci), une émulsion à l'halogénure d'argent sans iodure ou contenant y.9u de iodure comparativement a l'émulsion mentionnée en b), associée à ce (ces) colorant(s), caractérisé par le fait que ce matériau photographique contient
e) dans la (les) couche(s) c) et/ou dans au moins une autre couche qui est voisine de la (des) couche(s) c), et qui est séparée d'une ou de plusieurs couches a) par au moins une couche intermédiaire, une émulsion noyau-enveloppe sans iodure, ou contenant peu de iodure, dont les particules sont constituées par un noyau d'halogénure d'argent voilé en surface et d'une enveloppe d'halogénure d'argent non voilée entourant ce noyau, cette émulsion pouvant être développée spontanément jusqu'à la densité maximale par action d'un développateur, et contenant éventuellement un retardateur de développement pour régler d'une façon poussée la cinétique du développement.
EP81810290A 1980-07-22 1981-07-16 Procédé pour la formation d'images positives masquées en couleur selon le procédé de blanchiment des couleurs à l'argent et matériau photographique pour le procédé de blanchiment des couleurs à l'argent utilisé dans ce procédé Expired EP0044812B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5588/80 1980-07-22
CH558880 1980-07-22

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EP0044812A2 EP0044812A2 (fr) 1982-01-27
EP0044812A3 EP0044812A3 (en) 1982-11-17
EP0044812B1 true EP0044812B1 (fr) 1985-06-19

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US (1) US4368256A (fr)
EP (1) EP0044812B1 (fr)
JP (1) JPS5752054A (fr)
CA (1) CA1174505A (fr)
DE (1) DE3171013D1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0286593A3 (en) * 1987-04-06 1989-09-06 Ciba-Geigy Ag Process for producing colour-positive masked images according to the silver dye-bleaching process
KR900007215B1 (ko) * 1988-12-09 1990-10-05 정진 의료기 공업사 한방(韓方)의학에 있어서의 맥진기록장치
JP3006123B2 (ja) * 1991-03-18 2000-02-07 ソニー株式会社 動脈硬さ観測装置
EP0630608B1 (fr) 1993-01-07 2002-10-23 Seiko Epson Corporation Appareil de diagnostic d'onde d'impulsion
US5399466A (en) * 1993-01-15 1995-03-21 Eastman Kodak Company [Method of processing] photographic elements having fogged grains and development inhibitors for interimage
EP0922431B1 (fr) 1997-03-28 2006-05-24 Seiko Epson Corporation Capteur tactile et unite de notification
GB9921779D0 (en) * 1999-09-16 1999-11-17 Ciba Sc Holding Ag UV-Curable compositions

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3206313A (en) * 1961-05-15 1965-09-14 Eastman Kodak Co Chemically sensitized emulsions having low surface sensitivity and high internal sensitivity
US3708300A (en) * 1970-11-19 1973-01-02 Eastman Kodak Co Silver-dye-bleach photographic materials
CA1039556A (fr) * 1973-11-16 1978-10-03 Dan Neuberger Elements photographiques hybrides en couleurs et mode de developpement
CH596580A5 (fr) * 1974-10-28 1978-03-15 Ciba Geigy Ag
CA1057109A (fr) * 1975-04-10 1979-06-26 Nicholas H. Groet Accentuation d'effets interimages
CH633641A5 (de) * 1977-07-21 1982-12-15 Ciba Geigy Ag Verfahren zur herstellung maskierter positiver farbbilder nach dem silberfarbbleichverfahren.
DE3066277D1 (en) * 1979-08-01 1984-03-01 Ciba Geigy Ag Process for the production of masked positive colour images by the silver dye bleach process and the photographic silver dye bleach material for use therein

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JPS5752054A (en) 1982-03-27
US4368256A (en) 1983-01-11
EP0044812A2 (fr) 1982-01-27
CA1174505A (fr) 1984-09-18
DE3171013D1 (en) 1985-07-25
EP0044812A3 (en) 1982-11-17

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