EP0100984A2 - Emulsions photographiques aux halogénures d'argent - Google Patents

Emulsions photographiques aux halogénures d'argent Download PDF

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Publication number
EP0100984A2
EP0100984A2 EP83107542A EP83107542A EP0100984A2 EP 0100984 A2 EP0100984 A2 EP 0100984A2 EP 83107542 A EP83107542 A EP 83107542A EP 83107542 A EP83107542 A EP 83107542A EP 0100984 A2 EP0100984 A2 EP 0100984A2
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EP
European Patent Office
Prior art keywords
silver halide
emulsion
layer
photographic
silver
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.)
Granted
Application number
EP83107542A
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German (de)
English (en)
Other versions
EP0100984A3 (en
EP0100984B1 (fr
Inventor
Manfred Dr. Becker
Sieghart Dipl.-Ing. Klötzer
Erik Prof. Dr. Moisar
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.)
Agfa Gevaert AG
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Agfa Gevaert AG
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 Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of EP0100984A2 publication Critical patent/EP0100984A2/fr
Publication of EP0100984A3 publication Critical patent/EP0100984A3/de
Application granted granted Critical
Publication of EP0100984B1 publication Critical patent/EP0100984B1/fr
Expired 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
    • G03C1/035—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein characterised by the crystal form or composition, e.g. mixed grain
    • 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
    • G03C1/035—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein characterised by the crystal form or composition, e.g. mixed grain
    • G03C2001/03535—Core-shell grains

Definitions

  • the invention relates to a photographic silver halide emulsion with silver halide grains which have a layered grain structure, the surface of the silver halide grains being chemically sensitized.
  • the invention further relates to a photographic recording material with a layer support and at least one layer which contains a silver halide emulsion according to the invention.
  • a disadvantage of the known emulsions with grains of high internal sensitivity, which are chemically sensitized on the surface in the usual way, is that their sensitometric properties and in particular their behavior towards pressure, especially when processed in the developer, are not yet satisfactory. It was found that converting emulsions, in particular, which are sensitized on the surface, are sensitive to pressure during processing and easily show signs of pressure if pressure is applied immediately after development, for example by transport direction is caused.
  • the object of the invention was to provide chemically sensitized silver halide emulsions with improved properties.
  • the invention was based on the object of specifying such emulsions with improved pressure behavior and with improved sensitivity.
  • the silver halide grains contain at least one layer which contains at least 25 mol% of silver chloride, the silver chloride content of the entire silver halide grain being less than 30 mol%.
  • the surface of the emulsion according to the invention is so chemically ripened that the ratio R of the density D r obtainable after surface ripening to the density D u obtainable with the emulsion which has not yet been surface-ripened but is otherwise identical is at least 3, the R being determined to determine the and the immature emulsion is applied in an identical manner to a layer support, exposed and in the developer of the composition below Water are developed on 1000 ml for 17 minutes at 20 ° C. and where D is the value of 90% of the maximum density and D is obtained by the exposure of the not yet ripened emulsion which leads to the density D in the ripened emulsion.
  • Silver halide grains with a layered grain structure are understood to mean silver halide grains which have a core and at least one layer which surrounds the core and whose properties differ from the core.
  • corresponding emulsions are also referred to as core / shell emulsions, of course, such a silver halide grain around the core üllen für not only an H but have several.
  • the emulsion is produced under reducing conditions.
  • the core and / or at least one layer of the grain is at a pAg value of max. 7, in particular if the pAg value is less than 5.0.
  • Suitable reducing agents are, for example, hydrazine, optionally as a hydrate, hydrazine derivatives, ascorbic acid, hydroquinone or formamidine sulfinic acid (thiourea dioxide).
  • Inorganic reducing agents such as tin (II) chloride or the above-mentioned thiourea dioxide are preferably used.
  • the amount of reducing agent added can vary within wide limits, it depends on the type of reducing agent and the silver halide and the desired effect.
  • the amount of reducing agent used in accordance with the present invention should generally not exceed 0.75 x 10 -2 milliequivalents per gram of silver ion already precipitated.
  • the emulsions according to the invention are preferably monodisperse; in general at least 80% of the emulsion grains have a diameter which is within a deviation of + 20% from the mean grain size. diameter lies. It is of course possible to use mixtures of inventive monodisperse emulsions of different grain sizes in recording materials.
  • the silver halide grains are regular in the sense that they have no crystal defects due to twin formation.
  • the silver halide grains of the emulsion according to the invention have at least one layer rich in silver chloride, which consists of at least 25 mol% of silver chloride.
  • the arrangement of the layer rich in silver chloride in the silver halide grain is not critical in itself. This layer can either be present as a core, as a layer within the silver halide grain or as an outer shell.
  • the layer rich in silver chloride is preferably located inside the grain, preferably at least 0.05 pm below the surface.
  • the transition from the layer rich in silver chloride to layers of other silver halide compositions can be formed as a sharp phase boundary or can take place continuously.
  • the silver halide grains preferably contain silver bromide or mixtures of silver .berbromide and silver iodide.
  • the silver halide grains can have any of the known forms, for example cubic, octahedral or the tetradecahedral mixed form.
  • the absolute value of the average grain size can be within wide limits vary. Depending on the intended use, both fine-grain silver halide emulsions with an average diameter of less than 0.5 ⁇ m, preferably less than 0.3 ⁇ m, and coarser-grain emulsions with an average grain diameter of in particular 0.5 to 2 ⁇ m can be used.
  • the silver halide emulsions according to the invention can be prepared by methods known per se for the production of silver halide emulsions with a layered grain structure. It is preferable to use double enema procedures, in which the maintenance of the required pAg and pH values can best be controlled. In general, a pAg value of 10 to 7 and a pH value of 4.5 to 7 are maintained in the known precipitation methods in emulsion production. According to the invention, however, at least one layer of the silver halide grain is used under reducing conditions, in particular with a pAg value of max. 7 manufactured.
  • Complexes of multivalent cations for example those of Rh, Pd, Ir, Pt, may also be present in the preparation of the emulsion.
  • the individual precipitation stages in emulsion production can be carried out directly one after the other, but also at intervals.
  • the silver halide grains can be treated with oxidizing agents, for example with Hg 2+ or Fe 3+ compounds, in a manner known per se to suppress fog.
  • the silver halide grains according to the invention have a core which consists essentially of silver bromide, at least a layer rich in silver chloride with at least 30 mol% of silver chloride and a layer essentially containing silver bromide which is further away from the core than the layer rich in silver chloride and which contains less silver chloride than the layer rich in silver chloride.
  • sensitizers are suitable for chemical sensitization of the silver halide grains on their surface.
  • Sulfur-containing compounds for example allyl isothiocyanate, allyl thiourea and thiosulfates, are particularly preferred.
  • Reducing agents for example the tin compounds described in Belgian patent specifications 493 464 or 568 687, and also polyamines such as diethylenetriamine or aminomethylsulfinic acid derivatives, for example in accordance with Belgian patent specification 547 323, can also be used as chemical sensitizers.
  • Precious metals or noble metal compounds such as gold, platinum, palladium, iridium, ruthenium or rhodium are also suitable as chemical sensitizers. This method of chemical sensitization is described in the article by R. Koslowsky, Z.Wiss.Phot. 46, 65-72 (1951).
  • polyalkylene oxide derivatives for example with polyethylene oxide having a molecular weight between 1000 and 20,000, also with condensation products of alkylene oxides and aliphatic alcohols, glycols, cyclic dehydration products of hexitols, with alkyl-substituted phenols, aliphatic carboxylic acids, aliphatic Amines, aliphatic diamines and amides.
  • the condensate tion products have a molecular weight of at least 700, preferably more than 1000.
  • these sensitizers can of course be used in combination, as described in Belgian patent 537 278 and British patent 727 982.
  • the present invention further relates to a recording material with a layer support, at least one light-sensitive silver halide emulsion layer and optionally further layers, characterized in that an emulsion according to the invention is contained in at least one layer.
  • This recording material is preferably a color photographic recording material.
  • Silver halide emulsions with silver halide grains which have a layered grain structure and a relatively chloride-rich layer, are already known from German laid-open publications 2 308 239 and 2 332 802 and US Patents 3 935 014 and 3 957 488.
  • their emulsions are not or only slightly chemically sensitized on their surface and, if they are applied to a support in the usual way, are exposed and are only developed to a very low density in a surface developer.
  • Silver halide emulsions are also known from German Offenlegungsschrift No. 2,203,462 and US Pat. No. 3,892,574, at least temporarily when they are precipitated or physically ripened pAg value between 7 and 0 is observed.
  • the surface of the emulsions obtained can be chemically sensitized and have a narrow grain size distribution.
  • the emulsions can have a layered grain structure, in which case the core of the silver halide grain can be chemically sensitized and the shell can be veiled by conventional methods in order to obtain emulsions of the so-called direct positive type.
  • emulsions with a layered grain structure are used which according to the invention have a layer which is relatively rich in silver chloride and are chemically sensitized on their surface.
  • German Offenlegungsschrift 3 144 867 discloses emulsions with silver halide grains and special diketo compounds.
  • the silver halide grains can have different layers and can still be precipitated at a pAg of 5 to 11.
  • silver halide emulsions with reduction-sensitized grains are known which contain phenol derivatives to improve the shelf life.
  • the silver halide grains can be made by various methods, including by a core-shell process.
  • the present invention can be applied to both black and white and color photographic images.
  • Colored photographic images can, for example, be based on the known principle of chromogenic Are developing in the presence of color couplers with the O xidations, of coloring p-phenylenediamine developers to form dyes react -Obtained.
  • the color couplers can be added to the color developer, for example, according to the principle of the so-called development process.
  • the photographic material itself contains the usual color couplers, which are usually incorporated into the silver halide layers.
  • the red-sensitive layer can contain a non-diffusing color coupler for producing the blue-green partial color image, usually a coupler of the phenol or ⁇ -naphthol type.
  • the green-sensitive layer can contain, for example, at least one non-diffusing color coupler for producing the purple partial color image, color couplers of the 5-pyrazolone or imidazolone type usually being used.
  • the blue-sensitive layer can contain, for example, a non-diffusing color coupler for generating the yellow partial color image, usually a color coupler with an open-chain ketomethylene grouping.
  • Color couplers of this type are known in large numbers and are described in a large number of patents. Examples include the publications “Farbkuppler” by W. Pelz in “Mitanderen aus den Anlagens Laboratorien der Agfa, Leverkusen / Kunststoff", Volume III, page 111 (1961), K. Venkataraman in "The Chemistry of Synthetic Dyes", Vol. 4, 341 to 387, Academic Press (1971) and TH James, “The Theory of the Photographic Process", 4th Ed., Pp. 353-362.
  • the color couplers can be, for example, 6-, 4- and 2-equivalent couplers, including the so-called white couplers, which do not produce any dye when reacted with color developer oxidation products, and DIR couplers.
  • color coupler mixtures can be used to set a desired color or reactivity.
  • water-soluble couplers can be used in combination with hydrophobic water-insoluble couplers.
  • the emulsions according to the invention are particularly suitable for color photographic recording materials with at least one silver halide emulsion layer unit for recording light from each of the three spectral ranges red, green and blue.
  • Each of these layer units can comprise a single silver halide emulsion layer or also a plurality of silver halide emulsion layers.
  • Color photographic recording materials with double layers for the different spectral ranges are known, for example, from US Pat. Nos. 3,663,228, 3,849,138 and 4,184,876.
  • the emulsions can be optically sensitized in a manner known per se, for example with the customary polymethine dyes, such as neutrocyanines, basic or acidic carbocyanines, rhodacyanines, hemicyanines, styryl dyes, oxonols and the like.
  • the customary polymethine dyes such as neutrocyanines, basic or acidic carbocyanines, rhodacyanines, hemicyanines, styryl dyes, oxonols and the like.
  • Such sensitization gates are in the work of F: M. Hamer "The Cyanine Dyes and related Compounds", (1964). In this regard, reference is made in particular to Ullmann's Encyclopedia of Industrial Chemistry, 4th edition. Volume 18, pages 431 ff.
  • Particularly suitable stabilizers are azaindenes, preferably tetra- or penta-azaindenes, in particular those which are substituted by hydroxyl or amino groups. Such connections are e.g. in the article by Birr, Z.Wiss.Phot. 47, 1952), pp. 2-58.
  • Other suitable stabilizers include heterocyclic mercapto compounds, e.g. Phenyl mercaptotetrazole, quaternary benzothiazole derivatives and benzotriazole.
  • the usual substrates can be used for the materials according to the invention, e.g. Carriers made of cellulose esters such as cellulose acetate or cellulose acetobutyrate, furthermore polyesters, in particular polyethylene terephthalate or polycarbonates, in particular based on bisphenylol propane. Also suitable are paper supports, which may contain waterproof polyolefin layers, e.g. made of polyethylene or polypropylene, can also contain supports made of glass or metal.
  • hydrophilic film-forming agents are suitable as protective colloid or binder for the layers of the recording material, for example proteins, in particular gelatin, alginic acid or their derivatives such as esters, amides or salts, cellulose derivatives such as. methyl cellulose, and cellulose sulfates, starch or derivatives thereof or hydrophilic synthetic binders such as polyvinyl alcohol, partially saponified Polyvinyla q etat, polyvinylpyrrolidone and others.
  • proteins in particular gelatin, alginic acid or their derivatives such as esters, amides or salts, cellulose derivatives such as. methyl cellulose, and cellulose sulfates, starch or derivatives thereof or hydrophilic synthetic binders such as polyvinyl alcohol, partially saponified Polyvinyla q etat, polyvinylpyrrolidone and others.
  • the layers can also contain other synthetic binders in dissolved or dispersed form, such as homopolymers or copolymers of acrylic or methacrylic acid or their derivatives, such as esters, amides or nitriles, and also vinyl polymers, such as vinyl esters or vinyl ethers.
  • synthetic binders in dissolved or dispersed form, such as homopolymers or copolymers of acrylic or methacrylic acid or their derivatives, such as esters, amides or nitriles, and also vinyl polymers, such as vinyl esters or vinyl ethers.
  • the layers of the photographic material can be hardened in the usual manner, for example with formaldehyde, with hardeners of the epoxy type, the heterocyclic ethyleneimine and the acryloyl type. Furthermore, it is also possible to harden the layers in accordance with the process of German laid-open specification 2 218 009 in order to obtain color photographic materials which are suitable for high-temperature processing. It is also possible to harden the photographic layers or the color photographic multilayer materials with hardeners of the diazine, triazine or 1,2-dihydroquinoline series or with hardeners of the vinyl sulfone type.
  • the customarily known black and white developer compounds such as, for example, the hydroxybenzenes and 3-pyrazolidones, are suitable for black and white development.
  • Suitable color developer substances for the material according to the invention are in particular those of the p-phenylenediamine type, for example 4-amino-N, N-diethyl-aniline hydrochloride; 4-amino-3-methyl-N-ethyl-N- ⁇ - (methanesulfonamido) ethylaniline sulfate hydrate; 4-amino-3-methyl-N-ethyl-N-ß-hydroxyethylaniline sulfate 4-amino-3-ß- (methanesulfonamido) ethyl-N, N-diethylaniline hydrochloride; 4-amino-N-ethyl-N- (2-methoxyethyl) -m-toluidine-di-p-toluene
  • the material is usually bleached and fixed. Bleaching and fixing can be carried out separately or together.
  • the usual compounds can be used as bleaching agents, for example Fe 3+ salts and Fe 3+ complex salts such as ferricyanides, dichromates, water-soluble cobalt complexes etc.
  • Iron-III complexes of aminopolycarboxylic acids in particular for example ethylenediaminetetraacetic acid, nitrilotriacetic acid, iminodiacetic acid, N, are particularly preferred -Hydroxyethylethylenediamintriessigklad and corresponding phosphonic acids.
  • a silver bromide emulsion with an average particle size of 0.25 ⁇ m was produced within 15 minutes by simultaneous pAg-controlled introduction of a KBr and an AgNO 3 solution into a 2.1% gelatin solution brought to a temperature of 63 ° C.
  • the crystals of this starting emulsion were then enlarged to twice the diameter by further addition of KBr and AgNO 3 solution at pAg 6.0.
  • an AgCl shell was struck on the crystals present by pAg-controlled double entry of KC1 and AgNO 3 solution.
  • the precipitation was then continued again by double entry of the KBr and AgNO 3 solution, an AgBr shell being applied to the previously precipitated AgCl layer.
  • the average particle diameter of the crystals obtained was 0.65 ⁇ m. 15% of the crystals were outside a range of 0.65 + (0.1. 0.65 ⁇ m), ie the emulsion obtained was homodisperse. The total AgCl content was 10 mol%.
  • the emulsion was freed of the soluble salts by washing in the customary manner and finally adjusted to a pAg of 7.8.
  • the emulsion was then ripened for 120 minutes at 45 ° C. by adding sodium thiosulfate pentahydrate in an amount of 80 ⁇ mol / mol silver and 42.5 mg of a triazaindolizine.
  • the comparative emulsion K is a converting emulsion which was produced in a modification of the method known from US Pat. No. 2,592,250. According to US Pat. No. 2,592,250, conversion emulsions with a relatively broad grain size distribution are generally obtained; a distribution width is typical in which about 70% of the grains have a diameter which deviates by more than 10% from the mean diameter. In order to obtain, for comparison, a conversion emulsion with a similarly narrow particle size distribution as in Emulsion A according to the invention, a converting emulsion with a narrow particle size distribution was prepared by first precipitating a monodisperse silver chloride emulsion (particle diameter 0.63 pm) by controlled double entry.
  • Emulsion K was converted by adding an equivalent amount of potassium bromide at 60 ° C for 26 minutes.
  • the conversion emulsion obtained (Emulsion K) still contained 10 mol% of silver chloride.
  • the mean grain diameter was 0.67 ⁇ m, 17% of the grains had a diameter that deviated from the mean diameter by more than 10%.
  • the dispersity of the emulsion A according to the invention and the comparison emulsion K is comparable.
  • Emulsion K was chemically ripened in the same way as Emulsion A.
  • An emulsion B according to the invention was prepared as in Example 1 under emulsion A with the modification that the silver bromide precipitation on the AgCl-containing zone was carried out not at pAg 6 but at pAg 4.5. The precipitation of the remaining layers and all other measures were carried out as indicated in Example 1.
  • the sensitometric evaluation gave the values listed in Table 2, from which the gain in sensitivity by precipitation at a lower pAg value can be clearly recognized.
  • Emulsion A prepared according to the invention has a much lower susceptibility to wet pressure than comparison emulsion K.
  • Emulsions A and K according to Example 1 were used for the layer structure given below.
  • emulsion A 1 kg of emulsion A is mixed with a coupler emulsate.
  • the coupler emulsifier is prepared from 50 mmol of a conventional yellow coupler, 13.5 ml of tricresyl phosphate and 50 ml of ethyl acetate and dispersion in 300 ml of a 12% gelatin solution in the presence of 2 g of sodium dodecylbenzenesulfonate.
  • the mixture of coupler emulsate and silver halide emulsion obtained is poured onto a customary layer support and subjected to the following processing:

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  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
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EP83107542A 1982-08-12 1983-08-01 Emulsions photographiques aux halogénures d'argent Expired EP0100984B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3229999 1982-08-12
DE19823229999 DE3229999A1 (de) 1982-08-12 1982-08-12 Fotografische silberhalogenidemulsion

Publications (3)

Publication Number Publication Date
EP0100984A2 true EP0100984A2 (fr) 1984-02-22
EP0100984A3 EP0100984A3 (en) 1984-09-26
EP0100984B1 EP0100984B1 (fr) 1986-10-15

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EP83107542A Expired EP0100984B1 (fr) 1982-08-12 1983-08-01 Emulsions photographiques aux halogénures d'argent

Country Status (4)

Country Link
US (1) US4495277A (fr)
EP (1) EP0100984B1 (fr)
JP (1) JPH0616157B2 (fr)
DE (2) DE3229999A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0210660A2 (fr) 1985-07-31 1987-02-04 Fuji Photo Film Co., Ltd. Procédé de formation d'image
EP0224214A2 (fr) 1985-11-21 1987-06-03 Fuji Photo Film Co., Ltd. Microcapsule sensible à la lumière contenant de l'halogénure d'argent et un composé polymérisable et matériau sensible à la lumière l'utilisant
EP0154920A3 (en) * 1984-03-15 1988-01-13 Agfa-Gevaert Ag Emulsion with a high silver chloride content, photographic registration material and process for obtaining a photograhic registration
EP0154921A3 (en) * 1984-03-15 1988-01-13 Agfa-Gevaert Ag Emulsion with a high silver chloride content, photographic registration material and process for obtaining a photographic registration
EP0152822A3 (en) * 1984-02-11 1988-01-27 Agfa-Gevaert Ag Photographic recording material

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JPS6035726A (ja) * 1983-08-08 1985-02-23 Fuji Photo Film Co Ltd ハロゲン化銀乳剤
JPH0621920B2 (ja) * 1985-11-06 1994-03-23 コニカ株式会社 ハロゲン化銀写真乳剤及びその製造方法、及び該乳剤を用いたハロゲン化銀写真感光材料
JPS62115434A (ja) * 1985-11-15 1987-05-27 Konishiroku Photo Ind Co Ltd ハロゲン化銀カラ−写真感光材料
JPH0619570B2 (ja) 1986-02-07 1994-03-16 富士写真フイルム株式会社 感光材料
JPS62269948A (ja) * 1986-05-19 1987-11-24 Fuji Photo Film Co Ltd ハロゲン化銀乳剤およびその製造法
DE3618141A1 (de) * 1986-05-30 1987-12-03 Agfa Gevaert Ag Durch waermebehandlung entwickelbares farbfotografisches aufzeichnungsmaterial
US4820624A (en) * 1986-12-26 1989-04-11 Fuji Photo Film Co., Ltd. Corner development type silver halide photographic emulsions
JPH0830861B2 (ja) * 1987-04-27 1996-03-27 富士写真フイルム株式会社 ハロゲン化銀写真乳剤およびそれを用いた多層構成写真感光材料
JPH0713728B2 (ja) * 1987-05-15 1995-02-15 富士写真フイルム株式会社 ハロゲン化銀写真感光材料
JP2631111B2 (ja) * 1987-11-06 1997-07-16 富士写真フイルム株式会社 ハロゲン化銀写真乳剤およびそれを用いた多層写真感光材料
US5155017A (en) * 1989-01-09 1992-10-13 Fuji Photo Film Co., Ltd. Silver halide photographic material
US5124244A (en) * 1989-01-18 1992-06-23 Fuji Photo Film Co., Ltd. Silver halide color photographic material
CA2035049C (fr) * 1990-01-31 1996-09-17 Audenried W. Knapp Substance a revelateur photographique non toxique
US5168035A (en) * 1990-12-27 1992-12-01 Eastman Kodak Company Process for making a pressure fog-resistant photographic element
DE4133823A1 (de) * 1991-10-12 1993-04-15 Agfa Gevaert Ag Fotografisches silberhalogenidmaterial
GB9603658D0 (en) * 1996-02-21 1996-04-17 Minnesota Mining & Mfg Photographic materials with improved image tone

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GB1306801A (en) * 1969-04-02 1973-02-14 Agfa Gevaert Ag Production of photographic silver images
US3622318A (en) * 1970-03-20 1971-11-23 Eastman Kodak Co Photographic materials and processes
US3850637A (en) * 1971-03-10 1974-11-26 Eastman Kodak Co Processes for obtaining positive images in silver halide compositions
DE2308239C2 (de) * 1973-02-20 1984-09-13 Agfa-Gevaert Ag, 5090 Leverkusen Direktpositives photographisches Aufzeichnungsmaterial
DE2332802C2 (de) * 1973-06-28 1984-09-20 Agfa-Gevaert Ag, 5090 Leverkusen Direktpositives photographisches Aufzeichnungsmaterial
DE2416814A1 (de) * 1974-04-06 1975-10-16 Agfa Gevaert Ag Direktpositives photographisches material
GB1591610A (en) * 1976-10-07 1981-06-24 Agfa Gevaert Rapidly processable radiographic material
JPS6055821B2 (ja) * 1981-02-18 1985-12-06 富士写真フイルム株式会社 内部潜像型ハロゲン化銀写真乳剤の製造法
JPS57138631A (en) * 1981-02-19 1982-08-27 Fuji Photo Film Co Ltd Internal latent image type silver halide emulsion
JPS599653A (ja) * 1982-07-08 1984-01-19 Konishiroku Photo Ind Co Ltd ハロゲン化銀写真感光材料
JPS5948755A (ja) * 1982-09-13 1984-03-21 Konishiroku Photo Ind Co Ltd ハロゲン化銀写真乳剤

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0152822A3 (en) * 1984-02-11 1988-01-27 Agfa-Gevaert Ag Photographic recording material
EP0154920A3 (en) * 1984-03-15 1988-01-13 Agfa-Gevaert Ag Emulsion with a high silver chloride content, photographic registration material and process for obtaining a photograhic registration
EP0154921A3 (en) * 1984-03-15 1988-01-13 Agfa-Gevaert Ag Emulsion with a high silver chloride content, photographic registration material and process for obtaining a photographic registration
EP0210660A2 (fr) 1985-07-31 1987-02-04 Fuji Photo Film Co., Ltd. Procédé de formation d'image
EP0224214A2 (fr) 1985-11-21 1987-06-03 Fuji Photo Film Co., Ltd. Microcapsule sensible à la lumière contenant de l'halogénure d'argent et un composé polymérisable et matériau sensible à la lumière l'utilisant

Also Published As

Publication number Publication date
JPS59140444A (ja) 1984-08-11
DE3367032D1 (en) 1986-11-20
EP0100984A3 (en) 1984-09-26
JPH0616157B2 (ja) 1994-03-02
EP0100984B1 (fr) 1986-10-15
US4495277A (en) 1985-01-22
DE3229999A1 (de) 1984-02-16

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