EP0265590B1 - Matériau photographique couleur sensible à la lumière - Google Patents

Matériau photographique couleur sensible à la lumière Download PDF

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Publication number
EP0265590B1
EP0265590B1 EP87107676A EP87107676A EP0265590B1 EP 0265590 B1 EP0265590 B1 EP 0265590B1 EP 87107676 A EP87107676 A EP 87107676A EP 87107676 A EP87107676 A EP 87107676A EP 0265590 B1 EP0265590 B1 EP 0265590B1
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Prior art keywords
sensitive
silver halide
light
photographic material
compound
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EP87107676A
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German (de)
English (en)
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EP0265590A2 (fr
EP0265590A3 (en
Inventor
Kiyoshi Yamashita
Toshifumi Iijima
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Konica Minolta Inc
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Konica Minolta Inc
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Priority claimed from JP10690881A external-priority patent/JPS5828743A/ja
Priority claimed from JP20047781A external-priority patent/JPS58100845A/ja
Priority claimed from JP20061181A external-priority patent/JPS58100847A/ja
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Priority claimed from EP82303652A external-priority patent/EP0070182B1/fr
Publication of EP0265590A2 publication Critical patent/EP0265590A2/fr
Publication of EP0265590A3 publication Critical patent/EP0265590A3/en
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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
    • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
    • G03C7/3022—Materials with specific emulsion characteristics, e.g. thickness of the layers, silver content, shape of AgX grains

Definitions

  • This invention relates to a silver halide light-sensitive color photographic material, and more particularly to a novel silver halide light-sensitive color photographic material exhibiting an improved image sharpness.
  • a negative type light-sensitive color photographic material used as an intermediate medium for obtaining an enlarged printed image should exhibit a high sharpness to allow for enlarging magnification. This requirement has recently become more important as cameras become smaller and the size of the image formed on the color photographic material is reduced.
  • the sharpness can be improved by utilizing the adjacency effect of a certain type of diffusing substance which is released during development.
  • This effect occurs due to a partial change in density i.e., density inclination of the diffusing development inhibitor, which is released during development, in the light-sensitive color photographic material.
  • the developing solution is diluted with water, agitation is conducted slightly during development, or a compound releasing a diffusing type of development inhibitor by reacting with an oxidation product of the developing agent is contained in the light-sensitive material.
  • Examples of known compounds releasing a diffusing development inhibitor by the reaction with an oxidation product of the developing agent are compounds which couple with an oxidized product of a color developing agent to form a dye and release a development inhibitor (hereinafter referred to as the DIR couplers) as disclosed in U.S. Patent No's. 3,148,062 and 3,227,554, and compounds which release a development inhibitor without forming a dye by coupling with an oxidation product of a color developing agent (hereinafter referred to as the DIR substances) as disclosed in U.S. Patent No. 3,632,345. (Both DIR couplers and DIR substances are referred to as the DIR compounds).
  • Japanese Provisional Patent Publication Nos. 82424/1977 and 117627/1977 disclose novel DIR couplers which can improve the color reproducibility and sharpness.
  • these publications do not describe a technique for deriving the maximum sharpness improvement effect of the DIR couplers.
  • the adjacency effect of the diffusing development inhibitor released during development enhances the sharpness, the degree of improvement in the sharpness is still unsatisfactory, and a need exists for a further improvement in the sharpness.
  • the primary object of the present invention is to provide a silver halide light-sensitive color photographic material exhibiting a remarkably improved sharpness.
  • Another object of the present invention is to provide a silver halide light-sensitive color photographic material exhibiting an enhanced adjacency effect of the diffusing development inhibitor released during development by use of th DIR compounds.
  • the term "negative type silver halide emulsion” is used to contrast with the so-called “direct positive emulsion”; in other words the negative type silver halide emulsion means such an emulsion that produces a silver image when exposed and then developed with a surface developing agent reciprocally proportional to the luminous intensity of the object.
  • the present invention is characterized by enhancing the edge effect, namely the difference in the adjacency effect of the diffusing development inhibitor released during the development with respect to the exposed area at the boundary between the exposed and unexposed areas.
  • the inventors have studied the advantages and utility of the use of DIR compounds and have found that the edge effect can be enhanced and the sharpness can be improved to a higher degree as the difference between the gamma ( ⁇ ) values of the color images obtained by the color development in the area where a diffusing development inhibitor is released and in the area where it is not released during the color development increases.
  • the gamma ( ⁇ ) is a characteristic indicating the tone of the photographic material, as defined in "Shashin Kagaku” (Photographic Chemistry) by Shin-ichi Kikuchi, Kyoritsu Shuppan, page 90.
  • silver halide color photographic materials have gamma values suitable for their applications.
  • a diffusing development inhibitor In order to obtain a desired gamma value and yet increase the difference between the gamma characteristics of the color images obtained by the color development in the area where a diffusing development inhibitor is released and in the area where it is not released during the color development, it is necessary to increase the gamma value in the area where the diffusing development inhibitor is not released.
  • the inventors have further studied how to increase the gamma value of an emulsion containing no DIR compound, and have found that an emulsion having a higher gamma value can be obtained if the uniformity of the crystal size in the emulsion is increased.
  • a negative type silver halide light-sensitive color photographic material for taking a picture which contains an emulsion having uniform crystal size, was not put into practical use for the reason that, with such an emulsion, a desired gamma characteristic cannot be obtained without adversely affecting the photographic characteristics other than gamma.
  • a "monodispersed emulsion” means an emulsion containing light-sensitive silver halide crystals essentially consisting of such crystals of which ratio of the standard deviation S (defined below) against the average crystal size r ⁇ is not greater than 0.15: In the present invention such monodispersed emulsion having S/ r 0.10 or less is preferable for obtaining a more enhanced sharpness effect.
  • the average crystal size r means the average diameter of silver halide crystals when they are spherical. As the crystals are not spherical, their projected images are converted to circular images of the same area, and the average of the diameters of the circular images is taken as the average crystal size.
  • the average crystal size is defined by: where r i designates the crystal sizes of individual crystals and n i designates the number of crystals.
  • the average crystal size r is preferably from 0.3 ⁇ m to 1.5 ⁇ m.
  • two or more emulsions having different average crystal sizes may be mixed together.
  • two or more kinds of monodispersed emulsions which are adequately sensitized may be used in admixture with one another.
  • the effects of the present invention increase as the uniformity of the crystal size distribution of the silver halide crystals in the emulsion increases. This is presumably attributable to the fact that the photographic characteristics such as light sensitivity and development characteristics of each crystal are uniform and, therefore, the crystals can uniformly receive the development inhibiting action of the diffusing development inhibitor released from the DIR compound during the color development.
  • the silver halide crystals used in the present invention have regular crystal habit and are octahedral and/or tetradecahedral shaped crystals.
  • the silver halide crystals may be of the so-called core-shell type in which the photographic characteristics and/or the silver halide composition differ between the core and the shell portions of the crystal.
  • the silver halide crystals used in the invention may consist of silver chloride, silver bromide, silver iodide, or a combination thereof such as silver chlorobromide, silver iodobromide, silver chloroiodide, silver chloroiodobromide or the like.
  • the silver iodobromide crystals are used.
  • the silver halide color photographic material has at least one silver halide light-sensitive emulsion layer containing at least one DIR compound and a silver halide light-sensitive emulsion which is a monodispersed emulsion or a mixture of monodispersed emulsions.
  • each emulsion layer containing negative type silver halide crystals having the same spectral sensitivity is constituted by at least two negative type silver halide emulsion layers having different light sensitivities.
  • the upper layer viewed from the substrate, has a light sensitivity higher than that of the lower layer.
  • the at least two layers each having the some spectral sensitivity have the average crystal sizes of the silver halide crystals different from each other.
  • the average crystal size of the silver halide crystals contained in the emulsion layer having a higher light sensitivity is in the range between 0.5 ⁇ m and 1.5 ⁇ m, while that in the emulsion layer having a lower light sensitivity is in the range between 0.3 ⁇ m and 0.8 ⁇ m .
  • the green-sensitive emulsion layer satisfies the aforesaid conditions in the light of relative luminosity curve of the human eye; i.e., the eye of a person has the highest sensitivity to green light among the visible rays.
  • the blue-, green- and red-sensitive emulsion layers respectively comprise a plurality of layers having different sensitivities, it is preferable that at least one of the layers satisfies the aforesaid conditions, and more preferably at leat the emulsion having a lower sensitivity satisfy the aforesaid conditions.
  • all of the blue-, green- and red-sensitive layers satisfy the aforesaid conditions.
  • the DIR compounds used in the present invention are represented by the following general formula (B): A ⁇ Z (B)
  • Examples of the DIR substances represented by the general formula (B) are described e.g. in U.S. Patent Nos. 3,958,993, 3,961,959 and 3,938,996, Japanese Provisional Patent Publication Nos. 147716/1975, 152731/1975, 105819/1976, 6724/1976, 46817/1977, and 49030/1977 and U.S. Patent Nos. 3, 928,041 and 3,632,345. Syntheses thereof are also described in these specifications.
  • the DIR compounds used in the present invention react at a high speed with an oxidized product of a color developing agent.
  • the DIR compounds exhibiting the same desired gamma characteristic with a smaller amount than D-103 described above can give a high sharpness improvement effect and therefore are particularly preferable for the purpose of the present invention.
  • the amount of the DIR compound used in the light-sensitive color photographic material in accordance with the present invention may alter depending on, e.g, the desired gamma characteristic, the reaction rate of the coupler with the color developing agent, halogen composition of the emulsion and the crystal size.
  • the proportion of the DIR compound is in the range 0.001 to 0.02 moles per mole of the silver halide in the layer containing the DIR compound.
  • any color developing agent which is used for the development of a silver halide light-sensitive color photographic material may be used.
  • aromatic primary amines such as p-phenylenediamine and p-aminophenol described in the aforeseaid literature 1 can be used.
  • the DIR compound can be incorporated in the light-sensitive material in various ways in accordance with the present invention.
  • the DIR compound When the DIR compound is soluble in an alkali, it may be added in the form of an alkaline solution.
  • it is soluble in an oil it is preferably dissolved in a high boiling solvent optionally in combination with a low boiling solvent and dispersed in the silver halide emulsion according to the procedures described in U.S. Patent Nos. 2,322,027, 2,801,170, 2,801,171, 2,272,191 and 2,304,940.
  • one or more DIR compounds may be dissolved optionally together with a coupler, a hydroquinone derivative, a discoloration preventing agent or an ultra violet ray absorber, for example, as required in a high boiling point solvent such as an organic acid amide, a carbamate, an ester, a ketone or a urea derivative, particularly di-n-butyl phthalate, tri-cresyl phosphate, triphenyl phosphate, di-isooctyl azelate, di-n-butyl sebacate, tri-n-hexyl phosphate, N,N-di-ethyl-caprylamide butyl, N,N-diethyl-laurylamide, n-pentadecyl ether, di-octyl phthalate, n-nonyl phenol, 3-
  • a coupler such as an organic acid amide, a carbamate, an ester, a ketone or a
  • the solution thus formed may be mixed with an aqueous solution containing a hydrophilic binder such as gelatin and an anionic surface active agent such as alkylbenzene-sulfonate or alkylnaphthalenesulfonate and/or a nonionic surface active agent such as sorbitan sesquioleate or sorbitan monolaurate.
  • a hydrophilic binder such as gelatin
  • an anionic surface active agent such as alkylbenzene-sulfonate or alkylnaphthalenesulfonate and/or a nonionic surface active agent such as sorbitan sesquioleate or sorbitan monolaurate.
  • the mixture thus obtained may then be emulsified and dispersed in a high-speed rotating mixer, colloid mill or supersonic dispersing unit, for example, and added to the silver halide emulsion.
  • DIR compound may be dispersed in the photosensitive material by a latex dispersing method.
  • the latex dispersing method and its effect are described for example in Japanese Provisional Patent Publication Nos. 74538/1974, 59943/1976 and 32552/1979 and "Research Disclosure", August 1976, No. 14850, pages 77-79.
  • Suitable latexes are homopolymers copolymers and terpolymers of monomers such as styrene, ethyl acrylate, n-butyl acrylate, n-butyl methacrylate, 2-acetoacetoxyethyl methacrylate, 2-(methacryloyloxy)ethyltrimethylammonium sulfate, sodium 3-(methacryloyloxy)propane-1-sulfonate, N-isopropylacrylamide, N-[2-(2-methyl-4-oxopentyl)]acrylamide, and 2-acrylamide-2-methylpropane sulfonate.
  • any conventional method of dispersing hydrophobic additives such as couplers may be used.
  • the DIR compound used in the present invention may be dispersed at the same time as the coupler or may be separately dispersed and added independently.
  • the layer affected by the development inhibitor or the unit layer by forming one or more scavenger layers at appropriate positions among the component layers of the photo-sensitive material.
  • the coupler used in the light-sensitive color photographic material in accordance with the present invention i.e. the compound forming a dye by the reaction with an oxidation product of the color developing agent, it is necessary only that it exists substantially at the time of color development.
  • the coupler may be contained in the color developing solution or preferably in the light-sensitive color photographic material.
  • the coupler is contained in the light-sensitive layer of the light-sensitive color photographic material.
  • the coupler is soluble in alkali, it may be added in the form of an alkaline solution. If it is soluble in oil, it may be added in the same way as the DIR compound as described above.
  • the coupler may either be four equivalent or two equivalent type with respect to the silver ion.
  • the coupler may be a low molecular coupler or the so-called polymeric coupler.
  • the coupler may be any of the known photographic couplers, preferably ⁇ -benzoylacetanilide yellow coupler, ⁇ -pivaloylacetanilide yellow coupler, 5-pyrazolone magenta coupler, pyrazolinobenzimidazole magenta coupler, phenol cyan coupler or naphthol cyan coupler.
  • Typical examples of the yellow couplers, cyan couplers and magenta couplers are set forth below.
  • alpha-acylacetamide yellow color forming couplers used in the present invention are:
  • the alpha-acylacetamide yellow color forming couplers can be prepared by the methods described for example in West German Offenlegungsschrift Nos. 20 57 941 and 21 63 812, Japanese Provisional Patent Publication Nos. 26133/1972, 29432/1973, 66834/1973, 66835/1973, 94432/1973, 1229/1974, 10736/1974, 34232/1975, 65231/1975, 117423/1975, 3631/1976 and 50734/1976 and U.S. Patent Nos. 3,227,550, 2,875,057 and 3,265,506.
  • the alpha-acylacetamide yellow color forming couplers may be contained in the silver halide emulsion layer individually or as a mixture of two or more couplers. They may be incorporated by conventional procedure in an amount from, say, 1 to 30, preferably 5 to 30, mole % of blue-sensitive silver halide.
  • Typical examples of the cyan couplers are:
  • the cyan forming couplers can be prepared by the methods described for example in British Patent No. 1084480, Japanese Provisional Patent Publication Nos. 117422/1975, 10135/1975, 37647/1976, 25228/1975 and 130441/1975. They are contained alone or in combination in the silver halide emulsion layer or contained in admixture with a so-called active-point arylazo-substituted colored coupler as described in U.S. Patent No. 3,034,892, etc. They are incorporated by conventional procedure in an amount of, say, 1 to 30, preferably 5 to 30, mole % of red-sensitive silver halide.
  • magenta couplers used in the present invention are:
  • the magenta couplers used in the present invention also include those described for example in U.S. Patent Nos. 3,311,476, 3,419,391, 3,888,680 and 2,618,641, West German Offenlegungsschrift Nos. 20 15 814, 23 57 102 and 23 57 122 and Japanese Provisional Patent Publication Nos. 129538/1974, 105820/1976, 12555/1979, 48540/1979, 112342/1976, 112343/1976, 108842/1976 and 58533/1977. The methods of preparing them are also described in these literatures.
  • magenta forming couplers are contained alone or in combination in the silver halide emulsion layer or contained in admixture with a so-called active-point arylazo-substituted colored coupler as described in U.S. Patent No. 3,005,712, etc. They are incorporated by conventional procedure in an amount of, say, 1 to 25 moles per mole of green-sensitive silver halide.
  • the light-sensitive color photographic material in accordance with the present invention may also contain a color contamination preventing agent, a light discoloration preventing agent or an ultra violet absorber, for example.
  • the color contamination preventing agents are used to prevent fog or contamination from occurring due to unnecessary reactions between the couplers and an oxidation product of the developing agent formed by oxidation with air or the like.
  • the color contamination preventing agents are described for example in U.S. Patent Nos. 2,336,327, 2,360,290, 2,403,721, 2,701,197, 2,728,659 and 3,700,453, British Patent No. 891158 and Japanese Provisional Patent Publication No. 95948/1980
  • the light discoloration preventing agents for the color forming dyes used in the present invention may be those described for example in U.S. Patent Nos. 3,432,300, and 3,573,050 and Japanese Provisional Patent Publication Nos. 20977/1974, 31256/1973, 31625/1973, 17729/1978 and 48538/1979.
  • the ultra violet absorbers used in the present invention may for example be benzotriazole and benzophenone compounds described in U.S. Patent Nos. 3,004,896, 3,253,921 and 3,705,805, Japanese Patent Publication No. 41572/1973 and Japanese Provisional Patent Publication No. 25337/1975.
  • the silver halide crystals used in the silver halide light-sensitive photographic material in accordance with the present invention may be prepared by the acid process, neutral process or ammonia process. It is also possible to prepare seed crystals by the acid process, and grow them up to the predetermined size by the ammonia process which gives a high growth rate.
  • the silver halides may be chemically sensitized with, for example, active gelatin; a sulfur sensitizer e.g. allylthiocarbamide, thiourea or cystine; a selenium sensitizer; a reduction sensitizer e.g. tin (II) salt, thiourea dioxide and polyamine; a noble metal sensitizer, e.g. water-soluble gold salts such as potassium aurithiocyanate, potassium chloroaurate, or a water-soluble salt of platinum,ruthenium, rhodium or iridium, e.g., potassium chloroplatinate (some of these serve as sensitizers or fog restrainers depending on the amount used).
  • These sensitizers may be used alone or in combination (e.g. a combination of the gold sensitizer and the sulfur sensitizer, or with selenium sensitizer).
  • the silver halides may be optically sensitized to a desired wavelength region,for example by using an optical sensitizer e.g. a cyanine dye such as zeromethine dye, monomethine dye, dimethine dye or trimethine dye, or a merocyanine dye singly or in combination of two or more (e.g. supersensitized combination).
  • an optical sensitizer e.g. a cyanine dye such as zeromethine dye, monomethine dye, dimethine dye or trimethine dye, or a merocyanine dye singly or in combination of two or more (e.g. supersensitized combination).
  • compositions of the silver halide light-sensitive photographic material in accordance with the present invention may be determined as described in the above-mentioned literature 1 or "Research Disclosure” No. 18431.
  • the effect of improvement in the image sharpness was evaluated by determining the modulation transfer function (MTF) and comparing the MTF values at spatial frequencies of 10 lines/mm and 30 lines/mm.
  • MTF modulation transfer function
  • the graininess (RMS) was evaluated by obtaining the standard deviation of the fluctuation in the density values occurring when a color image having a color image density of 1.0 is scanned with a microdensitometer having a circular scanning aperture of diameter of 25 ⁇ , and comparing the value obtained by magnifying the standard deviation by a factor of 1000.
  • aqueous ammoniacal silver nitrate solution and an aqueous potassium bromide solution were added to a reactor containing potassium iodide and an aqueous gelatin solution while the pAg value in the reactor was maintained constant. This addition was done in proportion to the increase in the surface area of crystals during the growth thereof. Then, after an aqueous solution of Demole (manufactured by Kao Atlas Co., Ltd.) and an aqueous solution of magnesium sulfate were added to cause precipitation, desalting was conducted and gelatin was added to obtain an emulsion having a pAg value of 7.8 and a pH value of 6.0.
  • Demole manufactured by Kao Atlas Co., Ltd.
  • a DIR compound listed in Table 1 and 15g of 1-(2,4,6-trichlorophenyl)-3-[3-(2,4-di-tert-amylphenoxyacetamido)benzoamido]-5-pyrazolone as a magenta coupler were dissolved in 30ml of ethyl acetate and 15ml of dibutyl phthalate. The solution thus obtained was mixed with 20ml of a 10% aqueous solution of Alkanol B (alkylnaphthalenesulfonate available from du Pont) and 200ml of a 5% aqueous gelatin solution. The mixture was then emulsified and dispersed in a colloid mill.
  • Alkanol B alkylnaphthalenesulfonate available from du Pont
  • the dispersion thus obtained was then added to 1kg of green-sensitive silver iodobromide emulsion (containing 5.0 mole % of silver iodide) listed in Table 1.
  • the composition thus obtained was applied to a triacetate base having an antihalation layer so that the silver amount is 20mg/dm2, and dried to yield Specimen Nos. 1 to 9.
  • Specimen Nos. 10 to 14 were prepared in the same ways as Specimen Nos. 1, 2, 5, 7 and 9 in Example 1, except that D-109 was used in an amount of 0.0030 mole per mole of silver iodobromide instead of D-103.
  • Each specimen was exposed in the same manner as in Example 1 and developed with the same developing solution as in Example 1. However, to make the gamma value of each specimen constant, the color development time was changed and color development was interrupted when the gamma value is 0.8. Thereafter, bleaching and subsequent processings were conducted, and the photographic characteristics and sharpness of the obtained color image were determined. The results were as shown in Table 3.
  • Specimen Nos. 13 and 14 containing the emulsions having narrow crystal size distribution in accordance with the present invention allowed a shorter development time and exhibited improved sharpness and graininess compared with Specimen Nos. 10 and 11 in which emulsions having wide crystal size distribution were employed. They also displayed improved sharpness in relation to Specimen No. 12.
  • Specimen Nos. 24 to 32 were prepared in the same manner as in Example 1 except that a blue-sensitive silver iodobromide emulsion instead of the green-sensitive emulsion DIR compound D-42 instead of D-103 in an amount to give value of approximately 0.8 and as a yellow coupler ⁇ -pivaloyl- ⁇ .
  • -(1-benzyl-1-phenyl-1,2,4-triazole-3,5-dion-4-yl)-2-chloro-5-[ ⁇ -(2,4-di-tert-amylphenoxy)butaneamidol]acetanilide instead of the magenta coupler were used.
  • Example 2 Each of the above-described two specimens was individually brought into close contact with a transparent square chart or wedge, exposed to blue light, and processed as described in Example 1 to obtain a specimen having a color image.
  • the specimens in accordance with the present invention exhibit a higher sharpness than that in the comparative specimen even when a yellow dye image is formed by use of a blue-sensitive layer.
  • Specimen No. 33 was prepared by sequentially applying the layers described below on a transparent support of an under-coated cellulose triacetate film.
  • addition amount to the silver halide light-sensitive color photographic material is the amount per 1 m2, and the amounts of the silver halide emulsion and the colloidal silver are expressed in terms of silver).
  • Specimen 34 was prepared in the same way as Specimen No. 33, except that the silver iodobromide Emulsion No. the DIR compound and the addition amount were as shown in Table 6.
  • the blue sensitivity, green sensitivity and red sensitivity of Specimen No. 33 were taken as 100, and the color sensitivities of Specimen No. 34 were expressed as the relative values.
  • Table 8 shows that the multi-layer speciments gives the results similar to those obtained with the single layer speciments in Examples 1 and 4, and exhibit greatly improved sharpness without generating defects.

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Claims (8)

  1. Matériau photosensible pour la photographie en couleur, à base d'halogénure d'argent, comprenant un support qui est revêtu de (a) une couche d'émulsion d'halogénure d'argent sensible au bleu contenant un coupleur jaune, (b) une couche d'émulsion d'halogénure d'argent sensible au vert, contenant un coupleur magenta et (c) une couche d'émulsion d'halogénure d'argent sensible au rouge, contenant un coupleur cyan, au moins l'une des couches d'émulsion d'halogénure d'argent sensible au bleu, sensible au vert et sensible au rouge comprenant une émulsion d'halogénure d'argent monodispersée contenant des cristaux octaédriques et/ou tétradécaédriques d'halogénure d'argent du type photosensible négatif, essentiellement constitués de cristaux monodispersés satisfaisant à la relation suivante :

    S/ r ¯ ≦ 0,15
    Figure imgb0075
    Figure imgb0076
     r ¯ = Σn i r i /Σn i
    Figure imgb0077

    dans laquelle ri désigne la taille du cristal des cristaux individuels et ni désigne le nombre des cristaux, et ladite couche d'émulsion d'halogénure d'argent comprenant l'émulsion d'halogénure d'argent monodispersée contenant un composé qui, par réaction avec un agent de développement couleur oxydé, est capable de libérer un inhibiteur de développement apte à diffuser, ledit composé ayant la formule suivante :



            A-Z



    dans laquelle A représente un résidu capable de libérer Z par réaction avec un produit d'oxydation d'un agent de développement couleur, et Z représente un résidu partant qui, par réaction du composé avec un agent de développement couleur oxydé, forme un inhibiteur de développement, différent d'un composé représenté par la formule :



            A-TEMPS-Z



    dans laquelle TEMPS représente un groupe divalent capable de retarder la libération de Z, et ledit composé étant présent dans ladite couche d'émulsion d'halogénure d'argent en une proportion de 0,001 à 0,02 mole par mole d'halogénure d'argent présent dans ladite couche.
  2. Matériau photosensible pour la photographie en couleur, à base d'halogénure d'argent, selon la revendication 1, dans lequel la valeur S/r n'est pas supérieure à 0,10.
  3. Matériau photosensible pour la photographie en couleur, à base d'halogénure d'argent, selon la revendication 1 ou 2, dans lequel lesdits cristaux d'halogénure d'argent sont des cristaux d'iodobromure d'argent.
  4. Matériau photosensible pour la photographie en couleur, à base d'halogénure d'argent, selon l'une quelconque des revendications 1 à 3, dans lequel r est compris entre 0,3 et 1,5 µm.
  5. Matériau photosensible pour la photographie en couleur, à base d'halogénure d'argent, selon l'une quelconque des revendications 1 à 4, dans lequel les couches d'émulsion d'halogénure d'argent sensible au bleu, sensible au vert et sensible au rouge comprennent au moins deux couches ayant une photosensibilité relativement élevée et une photosensibilité relativement faible.
  6. Matériau photosensible pour la photographie en couleur, à base d'halogénure d'argent, selon la revendication 5, dans lequel ledit composé est incorporé dans au moins l'une des couches ayant une photosensibilité relativement faible.
  7. Matériau photosensible pour la photographie en couleur, à base d'halogénure d'argent, selon l'une quelconque des revendications 1 à 6, dans lequel ledit composé est incorporé dans la couche d'émulsion d'halogénure d'argent sensible au vert.
  8. Matériau photosensible pour la photographie en couleur, à base d'halogénure d'argent, selon l'une quelconque des revendications 1 à 7, dans lequel ledit composé est incorporé dans toutes lesdites couches d'émulsion d'halogénure d'argent sensible au bleu, sensible au vert et sensible au rouge.
EP87107676A 1981-07-10 1982-07-12 Matériau photographique couleur sensible à la lumière Expired - Lifetime EP0265590B1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP10690881A JPS5828743A (ja) 1981-07-10 1981-07-10 ハロゲン化銀多層カラ−写真感光材料
JP106908/81 1981-07-10
JP20047781A JPS58100845A (ja) 1981-12-11 1981-12-11 ハロゲン化銀カラ−写真感光材料
JP200477/81 1981-12-11
JP20061181A JPS58100847A (ja) 1981-12-12 1981-12-12 ハロゲン化銀カラー写真感光材料
JP200611/81 1981-12-12
EP82303652A EP0070182B1 (fr) 1981-07-10 1982-07-12 Matériau photosensible pour la photographie en couleurs

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP82303652.0 Division 1982-07-12

Publications (3)

Publication Number Publication Date
EP0265590A2 EP0265590A2 (fr) 1988-05-04
EP0265590A3 EP0265590A3 (en) 1989-04-19
EP0265590B1 true EP0265590B1 (fr) 1994-06-01

Family

ID=27440437

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87107676A Expired - Lifetime EP0265590B1 (fr) 1981-07-10 1982-07-12 Matériau photographique couleur sensible à la lumière

Country Status (1)

Country Link
EP (1) EP0265590B1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5678831A (en) * 1979-12-03 1981-06-29 Konishiroku Photo Ind Co Ltd Silver halide photographic material

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3658536A (en) * 1970-07-13 1972-04-25 Wilfred L Wolf Multilayered color film of increased sharpness
GB1469480A (en) * 1974-08-07 1977-04-06 Ciba Geigy Ag Photographic emulsion
US4248962A (en) * 1977-12-23 1981-02-03 Eastman Kodak Company Photographic emulsions, elements and processes utilizing release compounds
JPS5763531A (en) * 1980-10-03 1982-04-17 Konishiroku Photo Ind Co Ltd Multilayer color photographic material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5678831A (en) * 1979-12-03 1981-06-29 Konishiroku Photo Ind Co Ltd Silver halide photographic material

Also Published As

Publication number Publication date
EP0265590A2 (fr) 1988-05-04
EP0265590A3 (en) 1989-04-19

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