EP0309119A2 - Matériau photographique à l'halogénure d'argent sensible à la lumière de haute granulosité et de haute sensibilité - Google Patents

Matériau photographique à l'halogénure d'argent sensible à la lumière de haute granulosité et de haute sensibilité Download PDF

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Publication number
EP0309119A2
EP0309119A2 EP88308279A EP88308279A EP0309119A2 EP 0309119 A2 EP0309119 A2 EP 0309119A2 EP 88308279 A EP88308279 A EP 88308279A EP 88308279 A EP88308279 A EP 88308279A EP 0309119 A2 EP0309119 A2 EP 0309119A2
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EP
European Patent Office
Prior art keywords
silver halide
light
photographic material
emulsion
halide photographic
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Withdrawn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
EP88308279A
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German (de)
English (en)
Other versions
EP0309119A3 (fr
Inventor
Yoshiharu Mochizuki
Sadayasu Ishikawa
Toshihiko Yagi
Masamitsu Inoue
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Konica Minolta Inc
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Konica Minolta Inc
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Filing date
Publication date
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Publication of EP0309119A2 publication Critical patent/EP0309119A2/fr
Publication of EP0309119A3 publication Critical patent/EP0309119A3/fr
Withdrawn legal-status Critical Current

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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
    • G03C1/035—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
    • G03C2001/03511—Bromide content
    • 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
    • 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
    • G03C2001/03558—Iodide content

Definitions

  • This invention relates to a light-sensitive silver halide photographic material, more particularly to a light-­sensitive silver halide photographic material having high sensitivity and improved graininess.
  • a silver iodobromide emulsion containing 5 mol% or more of silver iodide has been known as the silver halide emulsion having high sensitivity and excellent graininess.
  • the improved silver iodobromide emulsion the core/shell type silver halide emulsion containing 5 mol% or more of silver iodide has been abundantly studied. Particularly, for use in color nega films, much studies have been done about silver iodo­bromide emulsions of the core/shell type with a high silver iodide content phase containing 10 mol % or more of silver iodide in an inner part.
  • Japanese Unexamined Patent Publication No. 245151/1986 discloses the core/shell type emulsion improved in graininess
  • Japanese Unexamined Patent Publications Nos. 143331/1985, 147727/1985 and 254032/1985 disclose the core/shell type emulsions with high silver iodide content.
  • the present inventors have examined in detail about the causes for these, and consequently found that the cause for the former is that uniformization of high iodine content phase and low iodine content phase can easily occur during preparation of the core/shell type emulsion having a core with high content of silver iodide, whereby there is involved the drawback that silver halide grains with indistinct phase structure are formed. Also, as to the latter, although separation between high iodine content phase and low iodine content phase may be distinct, they were found to be silver halide grains having separation of substantially two different iodine phases.
  • An object of the present invention is to provide a light-sensitive silver halide photographic material having high sensitivity and high graininess.
  • a light-sensitive silver halide photographic material having at least one layer of emulsion layer containing an emulsion which is a silver halide emulsion containing silver iodobromide grains having 3 or more phases of silver bromide or silver iodobromide with different compositions, said emulsion having, in the diffraction signal according to powdery X-ray diffraction, 3 or more diffraction maximums based on the diffraction peak corresponding to the maximum iodine content phase (hereinafter abbreviated as maximum iodine phase), the diffraction peak corresponding to the minimum iodine content phase (hereinafter abbreviated as minimum iodine phase) and one or plural number of diffraction peaks corresponding to the intermediate iodine content phase (hereinafter abbreviated as intermediate iodine phase) comprising intermediate
  • Fig. 1 represents a X-ray diffraction pattern of emulsion grains, with the axis of abscissa showing diffraction angle (2 ⁇ ) and the axis of ordinate diffraction intensity.
  • At least one layer of the silver halide emulsion layers contains the silver iodobromide emulsion of the present invention.
  • the half value width obtained when the powdery X-ray diffraction of silicon (111) was measured with the use of X-ray having a wavelength of 1.4908 ⁇ obtained by diffracting twice the synchrotron orbit radiation with a curved silicon single crystal (111) was found to be 0.043 ° (2 ⁇ ).
  • the diffraction signal corresponding to the diffraction line (420) of silver iodobromide has 3 or more of diffraction maximums as the total of the diffraction peak corresponding to the maximum iodine phase, the diffrac­tion peak corresponding to the minimum iodine phase and one or a plural number of diffraction peaks corresponding to the iodine phase comprising intermediate compositions between said maximum iodine phase and said minimum iodine phase, and two or more diffraction minimums therebetween.
  • diffraction intensity corresponding to the phase which gives the highest intensity among the diffraction maximums should be 1 to 50 times, more preferably 1 to 20 times, particularly 1 to 10 times, relative to the diffraction intensity corresponding to the phase which gives the lowest intensity among the diffraction maximums.
  • the emulsion having a clear phase structure of 3 or more phases in the present invention one with the diffraction intensity of the minimum value sandwiched between any adjacent two diffraction maximums being 95 % or less of the weaker one of the adjacent two diffraction maximums (peaks) is preferred. Further preferably, it is 90 % or less.
  • phase structure of 3 or more phases of silver bromide or silver iodobromide in the present invention can be judged by the method of X-ray diffraction.
  • Examples of application of X-ray diffraction method to silver halide grains are described in the literature of H. Hirsch, Journal of Photographic Science, Vol. 10 (1962), P.129 et seq, etc.
  • EPMA method Electro-Probe Micro Analyzer method
  • the silver halide emulsion is the emulsion according to the present inven­tion or an emulsion as mentioned above wherein many kinds of silver halide grains co-exist.
  • This method can perform elemental analysis of extremely fine portion by X-ray analysis by electron beam excita­tion in which a sample comprising emulsion grains well dispersed so as to be not contacted with each other is prepared and irradiated with electron beam.
  • the halogenic compositions of the individual grains can be determined.
  • the emulsion of the present invention should preferably contain grains having more uniform iodine contents therebetween.
  • the relative standard deviation should be 50 % or less, preferably 35 % or less, particularly 20 % or less.
  • Preferable halogenic compositions of the silver halide grains having the phase structure of 3 or more phases of the present invention are as described below.
  • the silver iodobromide emulsion of the present invention is a grain composed of the maximum iodine phase, the minimum iodine phase and the intermediate iodine phase therebetween, the intermediate being formed of one or more phases.
  • the silver iodide contents in the maximum iodine phase, the minimum iodine phase and the inter­mediate iodine phase therebetween differ from each other.
  • the silver iodide content in the maximum iodine phase should be preferably 10 mole% or more, more preferably 15 to 45 mole%, particularly 20 to 40 mol%.
  • the silver iodide content in the minimum iodine phase should be preferably 6 mole% or less, more preferably 0 to 3 mole%.
  • the percentage of the minimum iodine phase in the silver halide grains of the present invention should be preferivelyably 10 to 80 % by volume, more preferably 15 to 70 %, particularly 20 to 60 %.
  • the percentage of the maximum iodine phase in the whole grains should be desirably 10 to 80 % by volume, more preferably 20 to 50 %.
  • the silver iodide content in the intermediate iodine phase should be preferably 3 mole% or more, respectively, further preferably 5 mole% or more, resepctively, when it is represented in terms of the difference in silver iodide content between the maximum iodine phase and the intermediate iodine phase or between the intermediate iodine phase and the minimum iodine phase.
  • the preferable percentage of the intermediate iodine phase in the whole grains should be preferably 5 to 60 %, more preferably 20 to 50 %.
  • the silver halide grains of the present invention may comprise either normal crystals such as cubic, tetradecahedral, octahedral crystals, twin crystals or mixtures thereof, but preferably normal crystals.
  • the maximum iodine phase may exist anywhere within the grain, but preferably as the internal nucleus (core) internally of the grain. Also, although the minimum iodine phase may exist anywhere within the grain, but it should preferably exist as the shell outside of the internal nucleus. One or a plural number of intermediate iodine phases may also exist anywhere within the grain, but should preferably exist as the intermediate layer between the internal nucleus and the shell, also preferably exist inside of the internal nucleus, or can also exist in both thereof.
  • the silver halide emulsion of the present invention is a silver iodobromide, preferably with an average silver iodide content of 5 mol% or more, more preferably 6 to 15 mol%. Also, silver chloride can be contained within the range which does not impair the effect of the present invention.
  • the silver halide grains according to the present invention should be preferably the core/shell type emulsion, and as the preparation method thereof, those disclosed in Japanese Unexamined Patent Publications Nos. 177535/1984, 138538/1985, 52238/1984, 143331/1985, 35726/1985, 258536/1985 and 245151/1986 can be used. That is, it is possible to use a method in which the seed emulsion is grown according to the double jet method, while controlling pAg and pH.
  • control of pAg during preparation is very important.
  • the pAg during growth of core should be preferably 6 to 10, while the pAg during growth of shell may be prferably 9 to 11.
  • the pAg change during formation between the core and the shell may be varied either stepwise or continuously, but preferably continuously.
  • feeding of the reaction solutions should be preferably performed by a feeding method characterized by the following:
  • a plurarity of feeding nozzles are provided for one reaction solution in such a manner that said feeding nozzles are immersed in the mother liquid in reaction tank and located adjacent to the mother liquid inlet of the stirrer provided in the tank, so as to give a homogeneous mixed solution in a shorter period.
  • the device as shown in Japanese Unexamined Patent Publication No. 160128/1987 may be preferably employed at a rotational number of 500 to 1200 rpm.
  • the core/shell type silver halide emulsion When the core/shell type silver halide emulsion is grown starting from the seed emulsion as in the method disclos­ed in Japanese Patent Publication No. 138538/1985, it can have a silver halide composition region different from that of core at the central portion of the grain.
  • the halogenic composition of the seed grain may be any desired composition of silver bromide, silver iodobromide, silver chloroiodobromide, silver chloro­bromide, silver chloride, etc., but preferably silver iodobromide with a silver iodide content of 10 mole% or less or silver bromide.
  • the ratio of the seed grain occupied in the whole silver halide may be preferably 50 % or less in volume, parti­cularly 10 % or less.
  • Silver halide grains can be added with at least one metal ion selected from cadmium salts, zinc salts, lead salts, thallium salts, iridium salts (including complexes), rhodium salts (including complexes) and iron salts (including complexes) to incorporate these metal atoms internally of the grains and/or in the surface layers of the grains, and can be also placed in a reducing atmos­phere to impart reduced sensitizing nuclei into the grains or onto the grain surfaces.
  • metal ion selected from cadmium salts, zinc salts, lead salts, thallium salts, iridium salts (including complexes), rhodium salts (including complexes) and iron salts (including complexes)
  • the silver halide emulsion may have unnecessary soluble salts removed or contained as such after completion of the growth of silver halide grains.
  • removal can be practiced on the basis of the method described in Research Disclosure (hereinafter abbreviated as RD) No. 17643, Iten II.
  • the silver halide grain may be any of the grain in which latent image is formed primarily on the surface or primarily internally of the grain, and the size of the silver halide grain may be 0.05 to 30 ⁇ m, preferably 0.1 to 20 ⁇ m.
  • any of poly-dispersed emulsions with broad grain size distribution and mono-dispersed emulsions with narrow grain size distribution can be used.
  • the mono-dispersed silver halide emulsion may be preferably one in which the weight of silver halide grains having a grain size included within the range of ⁇ 20 % from an average grain size r as the center corresponds to 60 % or more of the weight of all the silver halide grains, more preferably 70 % or more, further preferably 80 % or more.
  • the average grain size r is defined as the grain size when the product of frequency ni of the grains having the grain size ri and ri3, namely ni x ri3 becomes the maximum (effective numeral: 3 ciphers, the smallest cipher numeral of 5 and over being rendered to the next cipher).
  • the grain size ri refers to its diameter in the case of a spherical silver halide grain, while it refers to the diameter when its projected image is calculated as the circular image with the same area in the case of a grain having other shape than spherical shape.
  • the grain size can be obtained by, for example, photo­graphing said grain by an electron microscope with enlargement to 10,000- to 50,000-fold and measuring the grain diameter of the area when projected on the print (number of grains measured is made indifferently 1,000 or more).
  • the particularly preferable highly mono-dispersed emulsion of the present invention has a broadness of distribution of 20 % or less, more preferably 15 % or less as defined below:
  • the average grain size and the standard deviation are to be determined from ri as defined above.
  • a method for obtaining a mono-dispersed emulsion there can be mentioned a method in which a water-soluble silver salt solution and a water-soluble halide solution are added under control of pAg and pH into a gelatin solution containing seed grains according to the double jet method.
  • a water-soluble silver salt solution and a water-soluble halide solution are added under control of pAg and pH into a gelatin solution containing seed grains according to the double jet method.
  • the silver halide emulsion of the present invention can be chemically sensitized in conventional manner.
  • the silver halide emulsion of the present invention can be optically sensitized to a desired wavelength region by use of a dye known as the sensitizing dye in the field of photography.
  • the sensitizing dye may be used alone, but two or more kinds may be also used in combination.
  • silver halide emulsion antifoggants, stabilizers, etc. can be added.
  • binder for said emulsion gelatin is advantageously used.
  • the emulsion layer and other hydrophilic colloid layers can be hardened, and also plasticizers, water-insoluble or difficultly soluble synthetic polymer dispersions (latices) can be contained.
  • couplers can be employed.
  • colored couplers having the effect of color correction, competitive couplers and compounds capable of releasing various fragments through coupling with the oxidized developing agent, namely photographically useful fragments such as development accelerators, bleaching accelerators, developers, silver halide solvents, color controllers, film hardeners, foggants, antifoggants, chemical sensitizers, spectral sensitizers and desensitizers, can be used.
  • photographically useful fragments such as development accelerators, bleaching accelerators, developers, silver halide solvents, color controllers, film hardeners, foggants, antifoggants, chemical sensitizers, spectral sensitizers and desensitizers.
  • auxiliary layers such as filter layer, halation preventive layer, irradiation preventive layer, etc.
  • a dye which may be flowed out from the light-sensitive material or bleached during developing processing may be also contained.
  • formalin scavengers In the light-sensitive material, formalin scavengers, brightening agents, matting agents, lubricants, image stabilizers, surfactants, color antifoggants, development accelerators, development retarders or bleaching accelerators can be added.
  • paper having polyethylene, etc. laminated thereon paper having polyethylene, etc. laminated thereon, polyethyleneterephthalate film, baryta paper, cellulose triacetate, etc. can be used.
  • color photographic processing conventionally known can be practiced after exposure.
  • a core/shell type emulsion Em-3 was prepared according to the method as disclosed in Japanese Unexamined Patent Publication No. 143331/1985.
  • the B-1 solution at 50 °C was stirred at 1,000 r.p.m. by a stirring device shown in Japanese Unexamined Patent Publication No. 160128/1987.
  • the solutions B-2 to B-4 and the solutions A-1 to A-2 were added by the double jet method as shown in Table 3.
  • pH and pAg were controlled by use of an aqueous KBr solution and 56 % acetic acid also as shown in Table 3.
  • Em-4 which was found to have a crystal habit of mainly octahedral and a fluctuation coefficient of 14 % in the grain size distribution.
  • Em-5 was prepared according to the same procedure as in Example 1 except for using a stirring device as shown in Japanese Unexamined Patent Publication No. 92523/1982.
  • Em-6 was prepared according to entirely the same procedure as in Example 1 except for using the solution B-5 in place of the solution B-4 in Example 1.
  • Table 5 Em No. Grain size ( ⁇ m) Silver iodide content* (mol %) Volume ratio (%) Core Intermediate shell Shell Whole Core Intermediate shell Shell Em-6 2.0 20 7 0 7.3 21 39 27 * values in formulation Em-6 was found to have a crystal habit of mainly octahedral and a fluctuation coefficient of 14 % in the grain size distribution.
  • the comparative emulsions Em-1, Em-2, Em-3 and Em-5 and the present emulsions Em-4 amd Em-6 were chemically ripened in the presence of sodium thiosulfate, chloroauric acid and ammonium thiocyanate, divided and added with sensitizing dyes I - V as described below and 4-hydroxy-6-methyl-1,3,3a,7-tetrazaindene as the stabilizer.
  • the respective layers with the following composition were formed on a triacetylcellulose film support successively from the support side to form a multi-layer light-sensitive color photographic material.
  • First layer Halation preventive layer (HC-2) A gelatin layer containing black colloidal silver.
  • Second layer Intermediate layer (I.L) A gelatin layer
  • Third layer Low sensitivity red-sensitive silver halide emulsion layer (RL-2) A mono-dispersed emulsion comprising AgBrI containing 9 mole% of AgI with an average grain size ( r ) of 0.80 ⁇ m (Emulsion A) and a mono-dispersed emulsion comprising AgBrI containing 8 mole% of AgI with an average grain size of 0.4 ⁇ m (Emulsion) Silver amount coated 1.7 g/m2 Sensitizing dye I 25 x 10 ⁇ 4 mole per mole of silver Sensitizing dye II 1.3 x 10 ⁇ 4 mole per mole of silver Cyan coupler (C-1) 0.08 mole per mole of silver Colored cyan coupler (CC-1) 0.004 mole per mole of silver DIK compound (D-4) 0.0005 mole per mole of silver
  • gelatin film hardeners (H-1) and (H-2), and surfactants were added.
  • Em-2 to Em-6 were used to prepare samples 2 to 6.
  • the processing liquors employed in the respective processing steps had the compositions shown below.
  • Iron ammonium ethylenediaminetetraacetate 100 g Diammonium ethylenediaminetetraacetate 10.0 g Ammonium bromide 150.0 g Glacial acetic acid 10.0 ml (added with water to one liter, and adjusted to pH 6.0 with ammonia water)
  • Ammonium thiosulfate 175.0 g Anhydrous sodium sulfite 8.5 g Sodium metasulfite 2.3 g (added with water to one liter, and adjusted to pH 6.0 with acetic acid)
  • Relative sensitivity is a relative value of reciprocal number of exposure dosage which gives a fog density of 0.1 and shown as the value relative to that of W sensitivity of the sample No. 4 as being 100.
  • RMS value was shown in terms of the relative value of the standard deviation of fluctuation of the density value which occurs when scanning is performed at a density higher by +0.3 than the minimum density by use of a microdensitometer having an opened scanning area of 250 ⁇ m2.

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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)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
EP88308279A 1987-09-19 1988-09-07 Matériau photographique à l'halogénure d'argent sensible à la lumière de haute granulosité et de haute sensibilité Withdrawn EP0309119A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP23556987A JPH02230136A (ja) 1987-09-19 1987-09-19 高感度、高粒状性ハロゲン化銀写真感光材料
JP235569/87 1987-09-19

Publications (2)

Publication Number Publication Date
EP0309119A2 true EP0309119A2 (fr) 1989-03-29
EP0309119A3 EP0309119A3 (fr) 1989-06-07

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EP88308279A Withdrawn EP0309119A3 (fr) 1987-09-19 1988-09-07 Matériau photographique à l'halogénure d'argent sensible à la lumière de haute granulosité et de haute sensibilité

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0416881A2 (fr) * 1989-09-06 1991-03-13 Konica Corporation Produit photographique couleur à l'halogénure d'argent sensible à la lumière
EP0424923A1 (fr) * 1989-10-27 1991-05-02 Konica Corporation Matériau photographique à l'halogénure d'argent sensible à la lumière ayant une sensibilitée élevée et capable de former une image de qualité et gradiation excellentes
EP0437859A1 (fr) * 1990-01-19 1991-07-24 Konica Corporation Matériau photographique couleur négatif à l'halogénure d'argent sensible à la lumière
EP0443475A2 (fr) * 1990-02-19 1991-08-28 Konica Corporation Matériau photographique à halogénure d'argent
EP0462543A1 (fr) * 1990-06-18 1991-12-27 Konica Corporation Emulsions à l'halogénure d'argent ayant une haute sensibilitÀ© et résistance à la pression
US5212054A (en) * 1990-02-02 1993-05-18 Konica Corporation Silver halide color photographic light-sensitive material
US5262294A (en) * 1990-02-19 1993-11-16 Konica Corporation Silver halide photographic light sensitive material
US5576169A (en) * 1994-04-21 1996-11-19 Imation Corp. Silver bromoiodide core-shell grain emulsion
US6511796B2 (en) 2000-06-21 2003-01-28 Ferrania S.P.A. Color photographic element
US6815154B2 (en) 2002-07-29 2004-11-09 Ferrania, S.P.A. Silver bromoiodide core-shell grain emulsion

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3310609A1 (de) * 1982-04-01 1983-10-06 Minnesota Mining & Mfg Hochempfindliche photographische silberhalogenid-emulsionen, verfahren zu ihrer herstellung und ihre verwendung insbesondere in farbumkehr- und farbkopierfilmen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3310609A1 (de) * 1982-04-01 1983-10-06 Minnesota Mining & Mfg Hochempfindliche photographische silberhalogenid-emulsionen, verfahren zu ihrer herstellung und ihre verwendung insbesondere in farbumkehr- und farbkopierfilmen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JOURNAL OF PHOTOGRAPHIC SCIENCE, vol. 10, pages 129-134, Royal Photograhpic Society, London, GB; H. HIRSCH: "Photographic emulsion grains with cores. Part 1. Evidence for the presence of cores" *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0416881A3 (en) * 1989-09-06 1991-07-17 Konica Corporation A silver halide light-sensitive colour photographic material
EP0416881A2 (fr) * 1989-09-06 1991-03-13 Konica Corporation Produit photographique couleur à l'halogénure d'argent sensible à la lumière
US5312727A (en) * 1989-10-27 1994-05-17 Konica Corporation Silver halide photographic light-sensitive material having a high sensitivity and capable of forming an image with an excellent quality and gradation
EP0424923A1 (fr) * 1989-10-27 1991-05-02 Konica Corporation Matériau photographique à l'halogénure d'argent sensible à la lumière ayant une sensibilitée élevée et capable de former une image de qualité et gradiation excellentes
EP0437859A1 (fr) * 1990-01-19 1991-07-24 Konica Corporation Matériau photographique couleur négatif à l'halogénure d'argent sensible à la lumière
US5437966A (en) * 1990-01-19 1995-08-01 Konica Corporation Silver halide color negative photographic light sensitive material
US5212054A (en) * 1990-02-02 1993-05-18 Konica Corporation Silver halide color photographic light-sensitive material
EP0443475A3 (en) * 1990-02-19 1992-05-20 Konica Corporation Silver-halide photographic light-sensitive material
US5262294A (en) * 1990-02-19 1993-11-16 Konica Corporation Silver halide photographic light sensitive material
EP0443475A2 (fr) * 1990-02-19 1991-08-28 Konica Corporation Matériau photographique à halogénure d'argent
EP0462543A1 (fr) * 1990-06-18 1991-12-27 Konica Corporation Emulsions à l'halogénure d'argent ayant une haute sensibilitÀ© et résistance à la pression
US5576169A (en) * 1994-04-21 1996-11-19 Imation Corp. Silver bromoiodide core-shell grain emulsion
US6511796B2 (en) 2000-06-21 2003-01-28 Ferrania S.P.A. Color photographic element
US6815154B2 (en) 2002-07-29 2004-11-09 Ferrania, S.P.A. Silver bromoiodide core-shell grain emulsion

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Publication number Publication date
JPH02230136A (ja) 1990-09-12
EP0309119A3 (fr) 1989-06-07

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