EP0564281A1 - Matériau photographique à l'halogénure d'argent - Google Patents

Matériau photographique à l'halogénure d'argent Download PDF

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Publication number
EP0564281A1
EP0564281A1 EP93302566A EP93302566A EP0564281A1 EP 0564281 A1 EP0564281 A1 EP 0564281A1 EP 93302566 A EP93302566 A EP 93302566A EP 93302566 A EP93302566 A EP 93302566A EP 0564281 A1 EP0564281 A1 EP 0564281A1
Authority
EP
European Patent Office
Prior art keywords
silver halide
photographic material
general formula
halide photographic
material according
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.)
Withdrawn
Application number
EP93302566A
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German (de)
English (en)
Inventor
Shinri Tanaka
Hirokazu Sato
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Publication of EP0564281A1 publication Critical patent/EP0564281A1/fr
Withdrawn legal-status Critical Current

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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
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08—Sensitivity-increasing substances
    • G03C1/10—Organic substances
    • G03C1/12—Methine and polymethine dyes
    • G03C1/14—Methine and polymethine dyes with an odd number of CH groups
    • G03C1/20—Methine and polymethine dyes with an odd number of CH groups with more than three CH groups
    • 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
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08—Sensitivity-increasing substances
    • G03C1/10—Organic substances
    • G03C1/12—Methine and polymethine dyes
    • G03C1/127—Methine and polymethine dyes the polymethine chain forming part of a carbocyclic ring
    • 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
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/34—Fog-inhibitors; Stabilisers; Agents inhibiting latent image regression
    • G03C1/346—Organic derivatives of bivalent sulfur, selenium or tellurium

Definitions

  • This invention relates to a silver halide photographic material, more particularly, to a silver halide photographic material that experiences less fog and which has high sensitivity.
  • sensitizing dyes used in a red-sensitive emulsion to achieve this purpose are required to satisfy various requirements such as providing adequate sensitivity and causing no stain by remaining in the processed photographic material.
  • Certain kinds of pentamethinecyanine dyes have been known as sensitizers whose characteristics are believed to be good enough to meet those requirements. In fact, however, they are not completely satisfactory in terms of sensitivity and stain resistance and the current practice employed is to use the sensitizers in small amounts at the sacrifice of sensitivity.
  • mercaptotetrazole derivatives are particularly known to be effective since they are capable of substantial reduction in fog. Two important requirements of effective restrainers are that they should not cause great desensitization other than the decrease in fog and that they should not adversely affect other layers. Mercaptotetrazole derivatives are effective in reducing the fog but, at the same time, they often reduce the sensitivity.
  • An object, therefore, of the present invention is to provide a silver halide photographic material that experiences less fog and which has high sensitivity.
  • This object of the present invention can be accomplished by a silver halide photographic material containing both a compound represented by the following general formula [I] and a compound represented by the following general formula [II]: where Ar is an aromatic group; M1 is a hydrogen atom, an alkali metal atom, an alkaline earth metal atom or an ammonium group; and R1 is OR2, NR3SO2R4 or COOM2 (where R2 is a hydrocarbon group having 2 or more carbon atoms; R3 is a hydrogen atom or a hydrocarbon group; R4 is a hydrocarbon group; and M2 is the same as M1); where Z1 and Z2 each represent the atomic group necessary to form an aromatic ring; R21 and R22 are each an alkyl group or an aryl group; L1, L2, L3, L4 and L5 are each a methine group; X ⁇ is an anion; n represents the integer necessary for neutralization of the charges in the molecule, provided that the total number of carbons in R21 and
  • Ar represents an aromatic group such as phenyl, naphthyl or pyridyl. These aromatic groups may have substituents. It is particularly preferred for Ar to be a phenyl group since the advantage of the present invention is remarkable in that case.
  • R1 denotes OR2, NR3SO2R4 or COOM2, where R2 represents a hydrocarbon group having 2 or more carbon atoms, as exemplified by an alkyl group such as ethyl, hexyl or dodecyl, or an aryl group such as phenyl, p-t-butylphenyl, m-methoxyphenyl or o-methoxyphenyl. It is particularly preferred for R2 to be an alkyl group since the advantage of the present invention is remarkable in that case.
  • R1 is NR3SO2R4 or OR2; more preferably, R1 is NR3SO2R4.
  • R3 represents a hydrogen atom or a hydrocarbon group; examples of the hydrocarbon group include a methyl group, as well as the groups identical to those represented by R2. It is particularly preferred for R3 to be a hydrogen atom since the advantage of the present invention is remarkable in that case.
  • R4 represents a hydrocarbon group and may be exemplified by hydrocarbon groups identical to those represented by R3. It is particularly preferred for R4 to be an alkyl group since the advantage of the present invention is remarkable in that case.
  • M1 and M2 each represent a hydrogen atom, an alkali metal atom, an alkaline earth metal or an ammonium group, and exemplary metal atoms include sodium, lithium, potassium, calcium, etc.
  • exemplary metal atoms include sodium, lithium, potassium, calcium, etc.
  • M1 is particularly preferred for M1 to be a hydrogen atom since the advantage of the present invention is remarkable in that case.
  • Z1 and Z2 each represent the atomic group necessary to form an aromatic ring such as a benzene ring or a naphthalene ring. These aromatic rings may have substituents.
  • the aromatic ring formed by each of Z1 and Z2 is preferably a benzene ring.
  • R21 and R22 each represent an alkyl group such as methyl, ethyl, propyl, pentyl, methoxyethyl, ethoxyethyl, 3-chloropropyl, 3-sulfopropyl, 4-sulfobutyl, carboxymethyl or benzyl.
  • each of R21 and R22 is preferably an alkyl or alkoxyalkyl group.
  • X ⁇ represents an anion
  • X represents a bromine atom, a chlorine atom, an iodine atom, or p-toluenesulfonic acid
  • n represents the integer necessary for neutralization of the charges in the molecule, provided that the total number of carbons in R21 and R22 and in the substituents on Z1 and Z2 is at least 6.
  • the restrainer of the present invention may first dissolve the restrainer either in water or in an organic solvent (e.g. methanol or ethanol) that is freely miscible with water before adding it to silver halide emulsion layers.
  • an organic solvent e.g. methanol or ethanol
  • the restrainers of the present invention may be used either alone or in combination with themselves or with other fog restrainers outside the scope of the present invention.
  • the restrainer of the present invention may be added at any time either before or during the formation of silver halide grains, or sometime between the end of formation of silver halide grains and the start of chemical ripening, or during or after the end of chemical ripening, or between the end of chemical ripening and the start of emulsion coating.
  • the restrainer is added during or after the end of chemical ripening or sometime between the end of chemical ripening and the start of emulsion coating.
  • the entire portion of the restrainer may be added at a time or it may be added in several portions.
  • the restrainer of the present invention may be added at the site of preparing silver halide emulsions or it may be added directly to the coating solutions of silver halide emulsions. If desired, the restrainer may be added to the coating solution for an adjacent non-light-sensitive hydrophilic colloidal layer, so that the restrainer is eventually incorporated into silver halide emulsion layers of interest through diffusion that occurs when two or more photographic layers are coated in superposition.
  • the restrainer While there is no particular limitation on the amount in which the restrainer is to be added, it is typically added in amounts ranging from 1 ⁇ 10 ⁇ 6 to 1 ⁇ 10 ⁇ 1 mole, preferably from 1 ⁇ 10 ⁇ 5 to 1 ⁇ 10 ⁇ 2 mole, per mole of silver halide.
  • the silver halide grains to be used in the present invention may be coarse or fine and the distribution of their size may be narrow or broad.
  • the silver halide grains may be normal crystals or twinned crystals, with the ratio between [100] and [111] faces being adjusted to any value.
  • the silver halide grains may have a uniform crystalline structure throughout from the interior to the surface; alternatively, the grains may have a lamellarstructure in which the crystalline structure differs between the interior and the surface.
  • the silver halides of interest may be of a type that forms latent image predominantly on the surface or they may be of a type that forms latent image within the grains.
  • the silver halide grains can be prepared by any known methods that are commonly employed in the art.
  • the silver halide emulsions to be used in the present invention may be of any species that are selected from among a silver chloride emulsion, a silver chlorobromide emulsion, a silver chloroiodobromide emulsion, etc. While any species of silver halide emulsions may be used without particular limitation, the preferred silver halide emulsion is preferably one that contains silver halide grains of high chloride content.
  • silver halide grains of high chloride content means those silver halide grains which have a chloride content of at least 90 mol%. With silver halide grains of high chloride content, the AgBr content is preferably up to 10 mol% and the AgI content is preferably up to 0.5 mol%. A more preferred silver halide composition is silver chlorobromide having a AgBr content of 0.1 - 2 mol%.
  • the silver halide grains of high chloride content need not always be used independently but they may be used in admixture with other silver halide grains of a different composition, for example, silver halide grains having a AgCl content of 10 mol% or less.
  • said silver halide grains of high chloride content preferably account for at least 60 wt%, more preferably at least 80 wt%, of all silver halide grains present in the emulsion layer under consideration.
  • the silver halide grains of high chloride content may have a uniform composition throughout from the interior to the surface of the grains; alternatively, the grains may have different compositions between the interior and the surface. If the interior of the grains has a different composition than their surface, the compositional change may be continuous or discontinuous.
  • the particle size of silver halide grains of high chloride content is not limited in any particular way but, considering other aspects of photographic performance such as adaptability for rapid access (high-speed processing) and sensitivity, the particle size is preferably in the range of 0.2 - 1.6 ⁇ m, more preferably in the range of 0.25 - 1.2 ⁇ m.
  • Particle size measurements can be accomplished by various methods commonly used in the art. Typical methods are described in R.P. Loveland, "Methods of Particle Size Analysis” in ASTM Symposium on Light Microscopy, pp. 94 - 122, 1955, and in C.E. Kenneth Mees and T.H. James, "The Theory of the Photographic Process", Third Edition, Chapter 2, Macmillant Publishing Co., Inc., 1966.
  • Particle size measurements can be achieved using either the projected area of particles or the diameter of an equivalent circle. If the particles of interest have a uniform shape, the particle size distribution can be expressed fairly correctly in terms of either the diameter of an equivalent circle or the projected area.
  • the distribution of the particle size of silver halide grains with high chloride content may be polydispersed or monodispersed.
  • the silver halide grains under consideration are monodispersed, with the coefficient of variation (C.V.) in the particle size distribution of silver halide grains being no more than 0.22, more preferably 0.15 or less.
  • the silver halide grains to be used in emulsions in accordance with the present invention may be prepared by any suitable method such as an acid process, a neutral process or an ammoniacal process.
  • the grains of interest may be allowed to grow at a time; alternatively, seed grains may first be prepared and then allowed to grow.
  • the method of preparing seed grains may be the same as or different from the method of allowing the prepared seed grains to grow.
  • Soluble silver salts may be reacted with soluble halide salts by any of the methods such as normal precipitation, reverse precipitation, double-Jet precipitation and combinations of two or more of these processes.
  • the reaction product yielded by double-jet precipitation is preferred.
  • a modification of the double-jet method is the pAg-controlled double jet method described in Japanese Patent Laid-Open Publication (kokoku) SHO No. 54-48521.
  • solvents for silver halide such as thioether may be used.
  • nitrogen-containing heterocyclic compounds or compounds such as sensitizing dyes may be added either during or after the end of the formation of silver halide grains.
  • the silver halide grains to be used in the present invention may have any geometry.
  • a preferred example is cubes having ⁇ 100 ⁇ faces as crystal surfaces.
  • Also useful are those grains which have many sides, as exemplified by octahedral, tetradecahedral and dodecahedral grains. If desired, grains having twinned faces may additionally be used.
  • the silver halide grains to be used in the present invention may have a single geometry; alternatively, grains of various geometries may be mixed together.
  • metal ions are added to the silver halide grains under consideration by using cadmium salts, zinc salts, lead salts, thallium salts, iridium salts or complex salts thereof, or rhodium salts or complex salts thereof, or iron salts or complex salts thereof, so that the thus added metal ions can be incorporated in the interior and/or surface of the grains.
  • cadmium salts zinc salts, lead salts, thallium salts, iridium salts or complex salts thereof, or rhodium salts or complex salts thereof, or iron salts or complex salts thereof, so that the thus added metal ions can be incorporated in the interior and/or surface of the grains.
  • nuclei for reduction sensitization can be imparted to the interior and/or surface of the grains.
  • the emulsion containing the silver halide grains to be used in the present invention (which emulsion is hereunder referred to as the "emulsion of the present invention") may be freed of unwanted soluble salts after the end of the growth of the silver halide grains or it may have those soluble salts contained as such. If the salts are to be removed, the methods described in Research Disclosure No. 17643 may be employed.
  • the silver halide grains to be contained in the emulsion of the present invention are preferably of such a type that a latent image is formed predominantly on the surface but they may be of another type that forms a latent image predominantly within the grains.
  • Chalcogen sensitizers may be used in the present invention.
  • the term "chalcogen sensitizers" is the generic name for sulfur sensitizers, selenium sensitizers and tellurium sensitizers, and among these, sulfur and selenium sensitizers are preferred.
  • Exemplary sulfur sensitizers include thiosulfates, allyl thiocarbazide, thiourea, allyl isothiocyanate, cystine, p-toluenethiosulfonate and rhodanine.
  • sulfur sensitizers that can be used are described in USP 1,574,944, 2,410,689, 2,278,947, 2,728,668, 3,501,313, 3,656,955, West German Patent Laid-Open Publication (OLS) 1,422,869, and Japanese Patent Laid-Open Publication (kokai) SHO Nos. 56-24937, 55-45016, etc.
  • the amount in which the sulfur sensitizers are added can vary over a substantial range depending upon various conditions such as pH, temperature and the size of silver halide grains.
  • the sulfur sensitizers are preferably added in amounts of from about 10 ⁇ 7 to about 10 ⁇ 1 mole per mole of silver halide.
  • the emulsion of the present invention may be sensitized by reduction sensitization using a reductive material or noble metal sensitization in which a noble metal compound is also used.
  • the silver halide emulsion is to be used in the present invention may be optically sensitized to light in a desired wavelength range using dyes that are known as sensitizers in the photographic industry.
  • Gelatin is advantageously used as a binder (or protective colloid) in the silver halide photographic material of the present invention.
  • Other binders that can be used are hydrophilic colloids such as gelatin derivatives, gelatin having other polymers grafted to make graft polymers, proteins, saccharide derivatives, cellulosic derivatives, and synthetic hydrophilic homo- and copolymers.
  • the silver halide photographic material of the present invention having the composition described above may typically be used as a color negative or positive film or as a color paper.
  • the advantage of the present invention is particularly marked if the silver halide photographic material is used as a color paper for direct viewing.
  • yellow couplers When the silver halide photographic material of the present invention is to be used as a full-color photographic material, yellow couplers, magenta couplers and cyan couplers are used. There are no particular limitations on the yellow, magenta and cyan couplers that can be used and any known types of couplers may be used.
  • Exemplary yellow couplers that can be used include benzoyl acetanilide based couplers and pivaloyl acetanilide based couplers.
  • Exemplary magenta couplers that can be used include 5-pyrazolone based couplers, pyrazolobenzimidazole based couplers, pyrazoloazole based couplers and open-chain acyl acetonitrile base couplers. Among these, 5-pyrazolone based magenta couplers and pyrazolotriazole based magenta couplers are particularly preferred.
  • Exemplary cyan couplers that can be used include naphtholic couplers, phenolic couplers and imidazolic couplers.
  • the silver halide photographic material of the present invention may further contain, as appropriate, various additives including a hardener, an anti-irradiation agent, an anti-stain agent, an image stabilizer, a plasticizer, a latex, a surfactant, a matting agent, a lubricant and an antistat.
  • various additives including a hardener, an anti-irradiation agent, an anti-stain agent, an image stabilizer, a plasticizer, a latex, a surfactant, a matting agent, a lubricant and an antistat.
  • the silver halide photographic material of the present invention may be subjected to color development and subsequent processing in the manner known in the art.
  • the color developing solution has usually a pH of at least 7, most commonly in the range of from about 10 to 13.
  • the temperature for color development is usually 15°C or more, commonly in the range of 20 - 50°C.
  • the temperature is preferably at least 30°C.
  • the conventional processing lasts for 3 - 4 min but to achieve rapid access, which is the primary objective of the present invention, color development is preferably performed for a time period of 10 - 60 sec, more preferably in the range of 20 - 50 sec.
  • the silver halide photographic material of the present invention can be developed rapidly without a drop in maximum density on the characteristic curve even if the color developing solution contains less than 2 ml per liter of benzyl alcohol which is commonly used in rapid development.
  • the photographic material is subjected to bleaching and fixing steps. Bleaching may be performed simultaneously with fixing. After fixing, the photographic material is usually washed with water. In place of washing with water, stabilization may be performed. If desired, both washing with water and stabilization may be performed.
  • a support was prepared by laminating one side of a paper base with polyethylene and the other side with TiO2 containing polyethylene. Layers having the compositions shown in Table 1 below were coated on the side of the support where the TiO2 containing polyethylene layer was provided, thereby preparing sample No. 101 of multi-layered silver halide color photographic material. Coating solutions for the respective layers were prepared by the following methods.
  • Ethyl acetate 60 ml was added to a mixture of yellow coupler (EY-1, 26.7 g), a dye image stabilizer (ST-1, 10.0 g), a dye image stabilizer (ST-2, 6.67 g), an anti-stain agent (HQ-1, 0.67 g) and a high-boiling point organic solvent (DNP, 6.67 g).
  • the resulting solution was dispersed wigh an ultrasonic homogenizer into a 10% aqueous gelatin solution (220 ml) containing 20% surfactant (SU-2, 7 ml), thereby preparing a dispersion of yellow coupler.
  • the dispersion was mixed with a blue-sensitive silver halide emulsion (see below; containing 8.67 g Ag) and, thereafter, an anti-irradiation dye (AIY-1) was added to prepare a coating solution for the first layer.
  • a blue-sensitive silver halide emulsion see below; containing 8.67 g Ag
  • an anti-irradiation dye AIY-1
  • a hardener (HH-1) was added to the second and fourth layers and a hardener (HH-2) was added to the seventh layer.
  • Surfactants (SU-1) and (SU-3) were added as coating aids for surface tension adjustment.
  • each silver halide emulsion is shown in terms of silver.
  • Monodispersed cubic emulsion having an average grain size of 0.85 ⁇ m, C.V. of 0.07 and containing 99.5 mol% AgCl
  • Monodispersed cubic emulsion having an average grain size of 0.43 ⁇ m, C.V. of 0.08 and containing 99.5 mol% AgCl
  • Monodispersed cubic emulsion having an average grain size of 0.50 ⁇ m, C.V. of 0.08 and containing 99.5 mol% AgCl
  • Sample Nos. 1 - 45 were prepared by repeating the procedure of preparing sample No. 101 except that the restrainer in Em-B and the sensitizer in Em-R were replaced by equal moles of the compounds of the present invention shown in Tables 3 and 4.
  • Color developing solution Tank solution Replenisher Pure water 800ml 800ml Triethanolamine 10g 18g N,N-Diethylhydroxylamine 5g 9g Potassium chloride 2.4g 1-Hydroxyethylidene-1, 1-diphosphonic acid 1.0g 1.8g N-Ethyl-N- ⁇ -methane-sulfonamidoethyl-3-methyl-4-aminoaniline sulfate 5.4g 8.2g Optical brightening agent (4,4'-amino-stilbene-sulfonic acid derivative) 1.0g 1.8g Potassium carbonate 27g 27g Water to make 1,000ml pH 10.10 10.60 pH adjusted with potassium carbonate or glacial acetic acid to 5.7 Stabilizing solution (tank solution was of the same composition as replenisher) 5-Chloro-2-methyl
  • the processed samples were evaluated for the following parameters.
  • Unexposed sample was processed in accordance with the scheme described above. After the end of processing, the density of the sample was measured with a Model PDA-65 densitomer (Konica Corp.), with the fog density being expressed in relative values with the absorption by raw paper being set at zero.
  • Konica Corp. Model PDA-65 densitomer
  • Table 2 shows that by using the restrainer of the present invention in combination with the sensitizing dye of the present invention, there is offered a silver halide photographic material that has high sensitivity and which experiences less fog.

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
EP93302566A 1992-04-02 1993-04-01 Matériau photographique à l'halogénure d'argent Withdrawn EP0564281A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8094792A JPH05281648A (ja) 1992-04-02 1992-04-02 ハロゲン化銀写真感光材料
JP80947/92 1992-04-02

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0774685A3 (fr) * 1995-11-14 1997-07-02 Kodak Ltd
EP0590620B1 (fr) * 1992-10-01 1999-12-08 Sterling Diagnostic Imaging, Inc. Emulsions à l'halogénure d'argent stabilisées avec des agents anti-voile améliorés

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0402087A2 (fr) * 1989-06-08 1990-12-12 Konica Corporation Matériau photographique à halogénure d'argent
EP0421464A1 (fr) * 1989-10-06 1991-04-10 Fuji Photo Film Co., Ltd. Méthode d'emmagasinage d'un matériau photographique à l'halogénure d'argent sensible à l'infrarouge et composé photographique comprenant un matériau photographique à l'halogénure d'argent sensible à l'infrarouge ainsi que matériau d'emballage pour celui-ci
EP0421452A1 (fr) * 1989-10-06 1991-04-10 Fuji Photo Film Co., Ltd. Matériau photographique à l'halogénure d'argent
EP0462579A1 (fr) * 1990-06-18 1991-12-27 Konica Corporation Méthode de préparation d'une émulsion à l'halogénure d'argent

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0402087A2 (fr) * 1989-06-08 1990-12-12 Konica Corporation Matériau photographique à halogénure d'argent
EP0421464A1 (fr) * 1989-10-06 1991-04-10 Fuji Photo Film Co., Ltd. Méthode d'emmagasinage d'un matériau photographique à l'halogénure d'argent sensible à l'infrarouge et composé photographique comprenant un matériau photographique à l'halogénure d'argent sensible à l'infrarouge ainsi que matériau d'emballage pour celui-ci
EP0421452A1 (fr) * 1989-10-06 1991-04-10 Fuji Photo Film Co., Ltd. Matériau photographique à l'halogénure d'argent
EP0462579A1 (fr) * 1990-06-18 1991-12-27 Konica Corporation Méthode de préparation d'une émulsion à l'halogénure d'argent

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0590620B1 (fr) * 1992-10-01 1999-12-08 Sterling Diagnostic Imaging, Inc. Emulsions à l'halogénure d'argent stabilisées avec des agents anti-voile améliorés
EP0774685A3 (fr) * 1995-11-14 1997-07-02 Kodak Ltd

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Publication number Publication date
JPH05281648A (ja) 1993-10-29

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