EP0421740A1 - Matériau photographique à l'halogénure d'argent sensible à la lumière à haute sensibilité et voile et granularité améliorés, et méthode pour sa fabrication - Google Patents

Matériau photographique à l'halogénure d'argent sensible à la lumière à haute sensibilité et voile et granularité améliorés, et méthode pour sa fabrication Download PDF

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Publication number
EP0421740A1
EP0421740A1 EP90310790A EP90310790A EP0421740A1 EP 0421740 A1 EP0421740 A1 EP 0421740A1 EP 90310790 A EP90310790 A EP 90310790A EP 90310790 A EP90310790 A EP 90310790A EP 0421740 A1 EP0421740 A1 EP 0421740A1
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EP
European Patent Office
Prior art keywords
light
sensitive material
grains
twinned
silver halide
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EP90310790A
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German (de)
English (en)
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EP0421740B1 (fr
Inventor
Toshihiko Konica Corporation Yagi
Hiroyuki Konica Corporation Hoshino
Toshiya Konica Corporation Kondou
Katsuhiko Konica Corporation Heki
Katsuhiko Konica Corporation Suzuki
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Konica Minolta Inc
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Konica Minolta Inc
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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
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/015—Apparatus or processes for the preparation of emulsions
    • 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
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/07—Substances influencing grain growth during silver salt formation

Definitions

  • the present invention relates to a silver halide photographic light-sensitive material and a method of its production, more specifically to a light-sensitive material with high sensitivity, reduced and excellent granularity and a production method thereof.
  • Japanese Patent Publication Open to Public Inspection No. 113934/1983 discloses a method of improving color photographic light-sensitive materials wherein a tabular silver halide emulsion having a diameter/thickness ratio of a grain (aspect ratio) exceeding 8 is applied to a green or red-sensitive layer.
  • the emulsions having high aspect ratios exceeding 8 does not have satisfactory improvement in sensitivity or granularity since its latent image-forming efficiency is not necessarily high while having an excellent photoreceptive efficiency.
  • Japanese Patent Publication Open to Public Inspection (hereinafter referred to as Japanese Patent O.P.I Publication) Nos. 14636/1986, 112142/1986 and 163451/1988 disclose monodispersed twinned tabular grains having a core-shell structure.
  • the grains having the aspect ratios of 3 to 8 show good performance but have insufficient improvement in sensitivity and granularity.
  • the object of the present invention is to provide a silver halide photographic light sensitive material (hereinafter referred to as a light-sensitive material) with high sensitivity, improved fog and excellent granularity and a production method thereof, more specifically to a light-sensitive material containing an improved core/shell type twinned silver halide grains and a production method thereof.
  • a light-sensitive material with high sensitivity, improved fog and excellent granularity and a production method thereof, more specifically to a light-sensitive material containing an improved core/shell type twinned silver halide grains and a production method thereof.
  • the above object of the invention is accomplished by a light-sensitive material containing a monodispersed silver halide emulsion comprising mainly twinned grains, wherein a high silver iodide content phase is present in the center of the grain; an average aspect ratio is less than 3; the grains consist mainly of ⁇ 111 ⁇ planes; and not less than 50% by number are twinned grains having the parallel twinned planes of an even number, and by a method of producing a light-sensitive material containing silver halide grains wherein pH is maintained at 1.5 to 5.8 during the formation of any portion of at least 30% by volume in the grain.
  • a monodispersion of a silver halide emulsion is defined by that the silver halide grains falling within the range of 80 to 120% of an average grain diameter d accounts for not less than 70%, preferably not less than 80%, more preferably not less than 90% by weight of the total silver halide grains.
  • the average grain size d is defined by the grain size di in which the product of ni x di3 is maximized, wherein ni is the number of the grains having the size di (the significant figure is calculated down to the third decimal place and the forth digit is rounded to the nearest whole number).
  • a diameter of a twinned grain is defined by a diameter of the circle having the same area as that of the projected grain.
  • Grain size can be determined by taking an electron micrograph of the grain at a magnifying rate of 10000 to 50000 and measuring the diameters of the printed grain images or the area of the projected images of more than 1000 grains selected arbitrarily.
  • the silver halide emulsion is prepared preferably by precipitating a high iodide content phase on a monodispersed seed grain, more preferably by the method described in Japanese Patent O.P.I. Publication No. 6643/1986, in which monodispersed, twinned spherical seed grains are grown.
  • the silver halide eMulsion of the invention has mainly an even number of parallel twinned planes, preferably two twinned planes.
  • the silver halide emulsion of the invention comprises a silver iodobromide having an average silver iodide content of 4 to 20 mol%, preferably 5 to 15 mol%.
  • the concentration of an aqueous solution of silver nitrate used to grow the high silver iodide content phase present in the center of a grain is not more than 1 N, preferably 0.3 to 0.8 N.
  • the twinned silver halide grains of the invention comprise mainly ⁇ 111 ⁇ planes in a ratio of not less than 60%, preferably 70 to 100%, more preferably 75 to 98% based on the whole grain.
  • the average ratio of a diameter of a circle having the same area as that of the projected major plain to a distance (thickness) between two grain surfaces parallel to the twinned planes is less than 3, preferably not less than 1.0 and less than 2.5, more preferably not less than 1.3 and less than 2.0.
  • the two or more twinned planes may be or may not be parallel to each other.
  • the grains may comprise ⁇ 111 ⁇ planes, ⁇ 100 ⁇ planes or combination thereof.
  • pBr is maintained at -0.7 to 2.0, preferably -0.7 to 1.5 during at least a half of the time necessary for forming the grains.
  • the nuclear grains may be monodispersed or polydispersed. Polydispersion is defined by the monodispersion degree of not less than 25%.
  • the nuclear grains contain twinned grains in a ratio of not less than 50%, preferably not less than 70%, and more preferably not less than 90% based on the total grains.
  • Substantially monodispersed spherical grains are prepared by adding the silver salt and halide solutions to the nuclear grains in the presence of a silver halide solvent of 10 ⁇ 5 to 2.0 mol per mol silver halide.
  • Substantially monodispersed grains are defined by the grains having the monodispersion degree of less than 25%.
  • Substantially spherical grains are defined by the grains which are round to such extent that ⁇ 111 ⁇ and ⁇ 100 ⁇ planes are not clearly recognizable via electron micrographic observation and have a L/l ratio of 1.0 to 2.0, preferably 1.0 to 1.5, wherein L and l represent the maximum and minimum grain diameters, respectively.
  • the spherical grains account for not less than 60%, preferably not less than 80%, and more preferably almost all of the total seed grains.
  • Examples of the silver halide solvent used in the seed grain formation are (a) organic thioethers described in US Patent Nos. 3,271,157, 3,531,289 and 3,574,628, Japanese Patent O.P.I. Publication Nos. 1019/1979 and 158917/1979 and Japanese Patent Examined Publication No. 30571/1983; (b) thiourea derivatives described in Japanese Patent O.P.I. Publication Nos. 82408/1978, 29829/1980 and 77737/1980; (c) AgX solvents having a thiocarbonyl group located between an oxygen or sulfur atom and a nitrogen atom described in Japanese Patent O.P.I. Publication Nos.
  • solvents may be used in combination.
  • Preferred solvents are thioethers, thiocyanates, thioureas, ammonia and bromides, more preferably a combination of ammonia and bromide.
  • pH is 3 to 13, preferably 6 to 12, and the temperature is 30 to 70°C, preferably 35 to 50.
  • the seed grains are prepared by ripening for 30 seconds to 10 minutes using 0.4 to 1.0 mol/l ammonia and 0.03 to 0.5 mol/l potassium bromide in combination at pH of 10.8 to 11.2 and a temperature of 35 to 45°C.
  • a water-soluble silver salt may be added for adjustment of ripening during the seed grain formation.
  • the seed grains are grown by adding the silver salt and halide solutions by the double jet method with the addition speed varied gradually so that the new grains are not formed and Ostwald ripening does not occur, as described in Japanese Patent O.P.I. Publication Nos. 39027/1976, 142329/1980, 113928/1983, 48521/1979 and 49938/1983.
  • the seed grains can be grown by another method described in the proceeding of the 1983 annual meeting of the Society of Photographic Science and Technology of Japan, p. 88, in which fine silver halide grains coexist in the emulsion for recrystallization on the nuclear grains.
  • pAg is maintained at 5 to 11, preferably 6.0 to 9.5; the temperature is 40 to 85°C, preferably 60 to 30°C; and pH is 1.5 to 5.8, preferably 1.8 to 3.0.
  • a stirring condition is an important factor.
  • the stirring apparatus disclosed in Japanese Patent O.P.I. Publication No. 160123/1988 is preferably used, in which a nozzle for adding a solution is placed near the mother liquid inlet so that the nozzle is dipped in the liquid. It is preferable that the rotating rate of the stirrer be 400 to 1200 rpm.
  • the silver halide emulsion used in the present invention may be subjected to chemical sensitization by an ordinary method and to spectral sensitization to the prescribed wavelength regions with sensitizing dyes.
  • the silver halide emulsion may contain an antifogging agent, a stabilizer and other additives.
  • Gelatin is preferably used as a binder.
  • the emulsion layers and other hydrophilic colloid layers may be hardened and contain a plasticizer and a latex.
  • the present invention is applied preferably to color photographic light-sensitive materials such as color negative films and color reversal films.
  • the emulsion layers of the color photographic light-sensitive materials contain couplers.
  • a colored coupler having a corrective effect there may be added a colored coupler having a corrective effect, a competitive coupler and a compound that releases photographically useful fragments such as a development accelerator, a bleaching accelerator, a developer, a silver halide solvent, a toning agent, a hardener, a fogging agent, an antifogging agent, a chemical sensitizer, a spectral sensitizer and a desensitizer by coupling with the oxidation product of a developing agent.
  • a development accelerator a bleaching accelerator, a developer, a silver halide solvent, a toning agent, a hardener, a fogging agent, an antifogging agent, a chemical sensitizer, a spectral sensitizer and a desensitizer by coupling with the oxidation product of a developing agent.
  • the light-sensitive material may be provided with supplementary layers such as a filter layer, an antihalation layer and an anti-irradiation layer. These layers and/or emulsion layers may contain a dye that elutes from the light-sensitive material or is bleached during development.
  • the light-sensitive material may contain a formalin scavenger, a fluorescent brightening agent, a matting agent, a lubricant, an image stabilizer, a surfactant, an anti-fogging agent, a development accelerator, a development retarder and a bleaching accelerator.
  • supports are polyethylene-laminated paper, polyethylene terephthalate film, baryta paper and cellulose triacetate film.
  • the light-sensitive material is subjected to conventional processing after exposure.
  • a monodispersed spherical seed emulsion was prepared by the method described in Japanese Patent O.P.I. Publication No. 6643/1986.
  • solution C1 was added in 20 seconds, followed by ripening for 5 minutes, wherein the KBr and ammonia concentrations were 0.071 mol/l and 0.63 mol/l, respectively.
  • this seed emulsion contained the monodispersed spherical grains having an average grain size of 0.36 ⁇ m and a monodispersion degree of 18%.
  • An emulsion of the present invention having an average silver iodide content of 6.0% was prepared as follows: Solution A2 Ossein gelatin 76.8 g Seed emulsion of Example 1 0.191 mol eq. Water was added to the total quantity of 4l.
  • Each six nozzles for supplying the B2 and C2 solutions were disposed under a stirring propeller of the mixing apparatus disclosed in Japanese Patent O.P.I. Publication No. 160128/1988.
  • Solutions B 2-1 and C 2-1 were added to solution A2 stirred at a high speed of 1000 rpm at 75°C by the double jet method with an addition rate increased gradually from 8.57 ml/min at the beginning to 24.16 ml/min at the final stage over a period of 135 minutes, during which pAg and pH were maintained at 8.0 and 2.0, respectively.
  • solutions B 2-2 and C 2-2 were added by the double jet method over a period of 73.5 minutes.
  • the initial and final addition rates of solution B 2-2 were 43.1 ml/min and 97.0 ml/min, respectively, and the initial and final addition rates of solution C 2-2 were 31.8 ml/min and 71.6 ml/min, respectively.
  • pAg and pH were maintained at 9.0 and 2.0 during the addition.
  • pH was adjusted to 6.0, and the emulsion was desalted by a conventional method.
  • the grains were found to comprise mainly ⁇ 111 ⁇ planes.
  • Em-1 The average aspect ratio of the grains having an even number of twinned planes was 1.9. This emulsion is designated as Em-1.
  • a monodispersed spherical seed emulsion having an average grain size of 0.34 ⁇ m and a monodispersion degree of 21% was prepared in the same manner as in Example 1 except that ripening time was changed from 5 minutes to 1 minute.
  • An emulsion of the present invention having an average silver iodide content of 6.0 mol% was prepared as follows: Solution A4 Ossein gelatin 74.1 g Seed emulsion of Example 3 0.306 mol eq. Water was added to the total quantity of 4000 ml. Soltuion B 4-1 Silver nitrate 206.4 g Nitric acid (1.38) 5.5 ml Water was added to the total quantity of 1105 ml. Solution C 4-1 Ossein gelatin 44.2 g Potassium bromide 101 g Potassium iodide 60.8 g Water was added to the total quantity of 1105 ml.
  • Solution B 4-2 Silver nitrate 941 g Nitric acid (1.38) 6.6 ml Water was added to the total quantity of 1582 ml.
  • Solution C 4-2 Ossein gelatin 63.3 g Potassium bromide 652 g Potassium iodide 9.2 g Water was added to the total quantity of 1582 ml.
  • Example 2 Using the same apparatus as in Example 2, an emulsion was prepared.
  • solutions B 4-1 and C 4-1 were added by the double jet method.
  • the initial and final addition rates were 12.21 ml/min and 26.03 ml/min, respectively, and the addition time was 58 minutes.
  • pAg and pH were maintained at 8.0 and 2.0, respectively, during the addition.
  • solutions B 4-2 and C 4-2 were added by the double jet method.
  • the initial and final addition rates were 19.44 ml/min and 44.0 ml/min, respectively, and the addition time was 50 minutes.
  • pAg and pH were maintained at 8.0 and 2.0, respectively during the addition.
  • pH was adjusted to 6.0, followed by desalting and washing.
  • Em-2 This emulsion is designated as Em-2.
  • Silver ioidobromide emulsion Em-3 having an average silver iodide content of 9.0% was prepared in the same manner as in Example 4 except that the volume of the high iodide content phase was increased.
  • Em-3 consisted of 100% twinned grains having a monodispersion degree of 14% and the ratio of the grains having twinned planes of an even number was 80%.
  • the grains having an even number of twinned planes had an average aspect ratio of 1.9 and consisted of 93% ⁇ 111 ⁇ planes and 7% ⁇ 100 ⁇ planes.
  • the layers having the following compositions were formed on a triacetyl cellulose film support in the order from the support to prepare comparative light-sensitive material sample No. 1.
  • each layer contained coating aid Su-2, dispersion aids Su-2 and Su-3, hardeners H-1 and H-2, stabilizer Stab-1, antifogging agents AF-1 and AF-2 and preservative DI-1.
  • Em-A is a diagrammatic representation of Em-A.
  • a monodispersed octahedral silver iodobromide emulsion having an average AgI content of 6 mol%, a high silver iodide content phase in the core, a monodispersion degree of 13% and an average grain size of 1.0 ⁇ m.
  • Em-B is a diagrammatic representation of Em-B.
  • a monodispersed octahedral silver iodotromide emulsion having an average AgI content of 9 mol%, a high silver iodide content phase in the core, a monodispersion degree of 14% and an average grain size of 1.0 ⁇ m.
  • a tabular silver iodobromide emulsion having an average AgI content of 6 mol%, a high silver iodide content phase in the core, a monodispersion degree of 21%, an average aspect ratio of 6 and an average grain size of 1.8 ⁇ m.
  • a tabular silver iodobromide emulsion having an average AgI content of 9 mol%, a high silver iodide content phase in the core, a monodispersion degree of 19%, an average aspect ratio of 5 and an average grain size of 1.6 ⁇ m.
  • the comparative light-sensitive material sample No. 2 was prepared in the same manner as in sample No. 1 except that Em-A and Em-B used in Layers 5, 9 and 13 were replaced with Em-C and Em-D as shown in Table 1.
  • inventive light-sensitive material samples No. 3 to 5 were prepared in the same manner as in comparative sample No. 1 except that the emulsions in Layers 5, 9 and 13 were replaced with Em-1, Em-2 and Em-3 of the invention each chemically sensitized with sodium thiosulfate, chloroauric acid and ammonium thiocyanate, as shown in Table 1.
  • Emulsion in Layer 5 Emulsion in Layer 9 Emulsion in Layer 13 1 (Comparison) Em-A Em-A Em-B 2 (Comparison) Em-C Em-C Em-D 3 (invention) Em-1 Em-1 Em-1 4 (invention) Em-2 Em-2 Em-2 5 (invention) Em-3 Em-3 Em-A and Em-B were prepared by the ammonia method in which pH was maintained at 10 ⁇ 1 during addition of the silver salt and halide solutions.
  • Em-C and Em-D were prepared by the neutral method in which pH was maintained 6.0 during addition of the silver salt and halide solutions.
  • Sample Nos. 1 to 5 were each subjected to wedge exposure with white light and then to following processing: Processes (38°C) Color development 3 minutes 15 seconds Bleaching 6 minutes 30 seconds Washing 3 minutes 15 seconds Fixation 6 minutes 30 seconds Stabilization 1 minute 30 seconds Drying
  • Granularity was determined by scanning an area having tte density of fog + 0.3 with a microdensitometer having an opening scanning area of 250 ⁇ m2 and measuring a density variation.
  • the inventive light-sensitive materials showed remarkable improvements if fog, sensitivity and granularity in comparison with the comparative light-sensitive materials.
  • the light-sensitive materials containing the AgX grains having ⁇ 100 ⁇ planes had better performance.
EP90310790A 1989-10-03 1990-10-02 Matériau photographique à l'halogénure d'argent sensible à la lumière à haute sensibilité et voile et granularité améliorés, et méthode pour sa fabrication Expired - Lifetime EP0421740B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP259309/89 1989-10-03
JP25930989A JPH03120528A (ja) 1989-10-03 1989-10-03 高感度でカブリ、粒状性の改良されたハロゲン化銀乳剤及びその製造方法

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EP0421740A1 true EP0421740A1 (fr) 1991-04-10
EP0421740B1 EP0421740B1 (fr) 1997-08-06

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JP (1) JPH03120528A (fr)
CA (1) CA2026732A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0533152A1 (fr) * 1991-09-17 1993-03-24 Eastman Kodak Company Procédé pour préparer une émulsion photographique utilisant du chlorure excédentaire pendant la nucléation
EP0550061A1 (fr) * 1991-12-30 1993-07-07 Eastman Kodak Company Grain tabulaire épais résistant aux éraflures
EP0569009A1 (fr) * 1992-05-08 1993-11-10 Eastman Kodak Company Préparation de matériaux photosensibles à l'halogénure d'argent avec une combinaison d'argent de maturation organiques
EP0591883A1 (fr) * 1992-10-06 1994-04-13 Konica Corporation Matériau photographique couleur à l'halogénure d'argent sensible à la lumière
EP0595031A1 (fr) * 1992-10-07 1994-05-04 Agfa-Gevaert Ag Méthode de préparation d'émulsions à l'halogénure d'argent
GB2314422A (en) * 1996-06-20 1997-12-24 Eastman Kodak Co Making silver halide emulsions

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2281592A1 (fr) * 1974-08-07 1976-03-05 Ciba Geigy Ag Procede de preparation d'une emulsion d'halogenure d'argent
EP0165576A2 (fr) * 1984-06-20 1985-12-27 Konica Corporation Procédé de préparation d'une émulsion photographique au bromure ou iodobromure d'argent
JPS6114630A (ja) * 1984-06-29 1986-01-22 Konishiroku Photo Ind Co Ltd ハロゲン化銀乳剤の製造方法
DE3707135A1 (de) * 1986-03-06 1987-09-10 Fuji Photo Film Co Ltd Silberhalogenidemulsionen und verfahren zu ihrer herstellung
EP0273411A2 (fr) * 1986-12-26 1988-07-06 Fuji Photo Film Co., Ltd. Emulsion à l'halogénure d'argent sensible à la lumière et matériaux photographiques couleurs l'utilisant

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06114630A (ja) * 1992-10-02 1994-04-26 Hitachi Cable Ltd 皮剥法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2281592A1 (fr) * 1974-08-07 1976-03-05 Ciba Geigy Ag Procede de preparation d'une emulsion d'halogenure d'argent
EP0165576A2 (fr) * 1984-06-20 1985-12-27 Konica Corporation Procédé de préparation d'une émulsion photographique au bromure ou iodobromure d'argent
JPS6114630A (ja) * 1984-06-29 1986-01-22 Konishiroku Photo Ind Co Ltd ハロゲン化銀乳剤の製造方法
DE3707135A1 (de) * 1986-03-06 1987-09-10 Fuji Photo Film Co Ltd Silberhalogenidemulsionen und verfahren zu ihrer herstellung
EP0273411A2 (fr) * 1986-12-26 1988-07-06 Fuji Photo Film Co., Ltd. Emulsion à l'halogénure d'argent sensible à la lumière et matériaux photographiques couleurs l'utilisant

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0533152A1 (fr) * 1991-09-17 1993-03-24 Eastman Kodak Company Procédé pour préparer une émulsion photographique utilisant du chlorure excédentaire pendant la nucléation
US5310644A (en) * 1991-09-17 1994-05-10 Eastman Kodak Company Process for preparing a photographic emulsion using excess halide during nucleation
EP0550061A1 (fr) * 1991-12-30 1993-07-07 Eastman Kodak Company Grain tabulaire épais résistant aux éraflures
EP0569009A1 (fr) * 1992-05-08 1993-11-10 Eastman Kodak Company Préparation de matériaux photosensibles à l'halogénure d'argent avec une combinaison d'argent de maturation organiques
EP0591883A1 (fr) * 1992-10-06 1994-04-13 Konica Corporation Matériau photographique couleur à l'halogénure d'argent sensible à la lumière
USH1594H (en) * 1992-10-06 1996-09-03 Konica Corporation Silver halide color photographic light-sensitive material
EP0595031A1 (fr) * 1992-10-07 1994-05-04 Agfa-Gevaert Ag Méthode de préparation d'émulsions à l'halogénure d'argent
US5427904A (en) * 1992-10-07 1995-06-27 Agfa-Gevaert Ag Process for the preparation of silver halide emulsions
GB2314422A (en) * 1996-06-20 1997-12-24 Eastman Kodak Co Making silver halide emulsions
US5750327A (en) * 1996-06-20 1998-05-12 Eastman Kodak Company Mixed ripeners for silver halide emulsion formation
GB2314422B (en) * 1996-06-20 2000-07-19 Eastman Kodak Co Mixed ripeners for silver halide emulsion formation

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CA2026732A1 (fr) 1991-04-04
JPH03120528A (ja) 1991-05-22
EP0421740B1 (fr) 1997-08-06

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