US2592250A - Photographic silver bromide emulsion containing some silver iodide - Google Patents

Photographic silver bromide emulsion containing some silver iodide Download PDF

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Publication number
US2592250A
US2592250A US82914A US8291449A US2592250A US 2592250 A US2592250 A US 2592250A US 82914 A US82914 A US 82914A US 8291449 A US8291449 A US 8291449A US 2592250 A US2592250 A US 2592250A
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United States
Prior art keywords
silver
emulsion
bromide
iodide
chloride
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Expired - Lifetime
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US82914A
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English (en)
Inventor
Davey Edward Philip
Knott Edward Bowes
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Eastman Kodak Co
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Eastman Kodak Co
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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
    • G03C1/485—Direct positive emulsions
    • G03C1/48538—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure

Definitions

  • This invention relates to photographic emulsions which are capable of forming an internal latent image upon exposure to light.
  • the emulsions which form an internal latent image are known (Mees, The Theory of the Photographic Process (1942), page 166; Berg, Marriage and Stevens Journal Optical Society of America, vol. 31 (1941), page 385).
  • Knott and Stevens U. S. application Serial No. 528,738, filed March 30, 1944, now abandoned, continuation-in-part application Serial No. 756,636 now U. S. Patent 2,456,956, a process is described employing this type of emulsion which is designated therein as type I.
  • the emulsion of the present invention is useful in the process of the Knott and Stevens application.
  • Photographic emulsions are usually made by the following series of operations: (1) emulsification or digestion or ripening of the silver halide, (2) freeing the emulsion from excess soluble salts usually by washing, (3) the second digestion or after-ripening step.
  • Silver nitrate or other soluble silver salt solution is added to a solution of the halide in the presence of a small amount of gelatin.
  • the silver halide produced in this way is usually silver bromide containing a smallamount of iodide.
  • Gelatin is added to the emulsion during or before the second digestion and the content of the sensitizers, usually sulfur compounds, normally present in the gelatin acts to increase the sensitivity of the final emulsions.
  • Photographic emulsions may be either neutral or ammoniacal emulsions.
  • Ammonia is ordinarily used during emulsification but if a neutral emulsion is being prepared, no ammonia is used thereand temperatures in the neighborhood of 70-90 C. are used in the precipitation of the silver halide.
  • the precipitation of the silver halide is carried out with an excess of soluble halide, it is necessary to wash the excess soluble halide and other soluble salts from the emulsion after emulsification and digestion. This operation removes the potassium nitrate and any excess of potassium bromide or other soluble halide present in the emulsion.
  • the emulsion is then subjected to the second digestion or after-ripening during which the sensitivity continues to increase.
  • the emulsion may then be coated or stored for future coating.
  • a method of making a sensitive photographic silver halide emulsion which comprises first forming in the presence of inert gelatin, and in one or more stages, an emulsion of silver salt grains consisting at least partly of a. silver salt which is more soluble in water than is silver 2 Claims.
  • bromide subsequently converting the whole of such grains to silver bromide or iodobromide and preferably if the silver iodide content of the emulsion is less than 6% of the total amount ofzrsilyer halide, treating such grains with an iodine compound to bring the silver iodide content upto at least 6%, ripening the emulsion and then either washing out some of the soluble salts or washing out the whole of the soluble salts followed by addition of soluble salts such as soluble chloride or,
  • the soluble halide content of the finished emulsion should be above 0.03 gram of potassium bromide per liter (preferably between 0.03 and 0.3 gram per liter) or the equivalent of any other bromide or chloride or mixture thereof.
  • equivalent as used here means that there is the same suppressing action on the silver ion pounds which have labile sulfur atoms have been removed (Steigmann, Journal Society Chemical Industry,- vol. 61, 1942, page 162).
  • ripening may be performed before the addition of iodide in those cases where such addition is necessary.
  • iodide content of the final emulsion should be at least 10 to 20%. are made in the following general way.
  • Thefirst step is to form in the presence of a small amount of inert gelatin '2.
  • silver salt which is more soluble in water than silver bromide, that is, silver chloride or silver thiocyanate. This is accomplished by'adding separate solutions of potassium chloride in water, and silver nitrate in water, to a solution of gelatin containing a silverchloride or other silver salt more soluble in water than silver bromide, to a silver halide less soluble in water than silver chloride, that is,. silver bromide, silver iodide or silver iodobromide.”
  • the silver iodide content of the emulsion should preferably be at least 6% of the total amount of silver halide and if the iodide content is less than 6%, it can be brought up to at least 6% by treating the emulsion with an iodine compound such as potassium iodide. It is preferable to bring the iodide content to at least 10 to 20% of the total halide content of the emulsion.
  • the next step in our process is to add additional gelatin and ripen the emulsion for about 15 minutes at a low temperature.
  • the final step is the washing to remove a portion of the soluble salts.
  • a distinction over the usual emulsion making procedure is that a portion of the soluble salts are left in the emulsion. Either some of the soluble salts may be removed by washing or the whole of the soluble salts may be removed followed by addition of the required amount of soluble salts such as soluble chloride or bromide.
  • the temperature of the solutions and emulsions should not be above about 50 C.
  • An example of an emulsion made according to the present invention is as follows:
  • a sensitive silver halide emulsion which comprises the addition of aqueous silver nitrate solution to at least an equivalent amount of aqueous alkali chloride solution and gelatin, which alkali chloride reacts substantially completely with all of the silver to form silver chloride, then adding an aqueous mixture of alkali bromide and iodide in an amount which will completely convert substantially all of the silver chloride to silver bromide and silver iodide so that the resulting emulsion will contain at least approximately 5 per cent silver iodide, the remainder being essentially all silver bromide, ripening the emulsion, and washing out at least some of the soluble salts and bringing the soluble halide content of the emulsion to a potassium bromide equivalent concentration above 0.03 gram per liter, all of the operation being conducted at less than about C.

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  • Chemical & Material Sciences (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)
  • Compositions Of Macromolecular Compounds (AREA)
US82914A 1947-05-13 1949-03-22 Photographic silver bromide emulsion containing some silver iodide Expired - Lifetime US2592250A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB284107X 1947-05-13

Publications (1)

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US2592250A true US2592250A (en) 1952-04-08

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US (1) US2592250A (de)
CH (1) CH284107A (de)
DE (1) DE851716C (de)
FR (1) FR966221A (de)
GB (1) GB635841A (de)

Cited By (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3000739A (en) * 1957-04-02 1961-09-19 Du Pont Process for preparing silver halide emulsions
US3031304A (en) * 1958-08-20 1962-04-24 Albert J Oliver Fine grain nuclear emulsion
US3237008A (en) * 1961-01-19 1966-02-22 Eastman Kodak Co Roomlight handling radiographic element including an x-ray sensitive layer overcoated with a dye desensitized silver halide emulsion
US3531288A (en) * 1966-03-11 1970-09-29 Eastman Kodak Co Direct positive silver halide emulsions containing excess iodide
US3531290A (en) * 1966-03-11 1970-09-29 Eastman Kodak Co Direct positive silver halide emulsions containing excess halide
DE2112729A1 (de) * 1970-03-20 1971-09-30 Eastman Kodak Co Farbphotographisches Aufzeichnungsmaterial
US3837857A (en) * 1970-05-14 1974-09-24 Eastman Kodak Co Photographic materials curve shape stabilized with carboxy substituted 4-thiouracils
DE2436101A1 (de) * 1973-07-27 1975-02-06 Polaroid Corp Fotografisches produkt und verfahren
DE2436180A1 (de) * 1973-07-27 1975-02-13 Polaroid Corp Silberhalogenidemulsionen mit substituiertem halogenid und produkte, die diese emulsionen enthalten
US3894871A (en) * 1973-07-27 1975-07-15 Polaroid Corp Photographic products and processes for forming silver and additive color transparencies
US3917485A (en) * 1973-01-18 1975-11-04 Eastman Kodak Co Method of making photographic silver halide emulsions and products thereof
DE2528638A1 (de) * 1974-06-26 1976-01-15 Minnesota Mining & Mfg Pivalylacetanilide und diese verbindungen enthaltendes photographisches aufzeichnungsmaterial
US3935014A (en) * 1973-02-20 1976-01-27 Agfa-Gevaert Aktiengesellschaft Direct-positive photographic emulsion containing, unfogged, monodispersed silver halide grains having a layered grain structure of specific silver chloride content
US3957488A (en) * 1973-06-28 1976-05-18 Agfa-Gevaert, A.G. Photographic emulsion containing unfogged, heterodisperse layered silver halide grains having a prodominantly bromide core and total chloride content less than 30 mole percent
US3966476A (en) * 1973-02-09 1976-06-29 Agfa-Gevaert, A.G. Spectrally sensitized silver halide emulsion containing more than 50% of the grains with ripening nuclei in cavities
JPS5129012B1 (de) * 1962-09-01 1976-08-23
US3979213A (en) * 1972-06-19 1976-09-07 Gilman Jr Paul B Spectrally sensitized silver halide emulsion containing an internal metal dopant
US3990895A (en) * 1974-04-23 1976-11-09 Polaroid Corporation Silver halide, color screen elements and their use in forming negative color images and diffusion transfer positive silver images
US4030920A (en) * 1976-04-12 1977-06-21 Eastman Kodak Company Processing compositions containing glycols for color transfer processes comprising direct positive silver halide developement
JPS537233A (en) * 1976-07-08 1978-01-23 Mitsubishi Paper Mills Ltd Multicolor photographic material having improved blue sensitive layer
US4070190A (en) * 1973-09-03 1978-01-24 E. I. Du Pont De Nemours And Company Process for producing photographic silver halide emulsions having a core/shell structure
US4075020A (en) * 1975-07-30 1978-02-21 Agfa-Gevaert Aktiengesellschaft Process for the preparation of silver halide emulsions
US4142900A (en) * 1977-02-18 1979-03-06 Eastman Kodak Company Converted-halide photographic emulsions and elements having composite silver halide crystals
US4150994A (en) * 1976-06-10 1979-04-24 Ciba-Geigy Ag Process for the manufacture of photographic silver halide emulsions containing silver halide crystals of the twinned type
EP0006543A1 (de) * 1978-06-27 1980-01-09 Agfa-Gevaert AG Lichtempfindliches photographisches Material, Verfahren zu dessen Herstellung sowie Verwendung zur Herstellung photographischer Bilder
US4184878A (en) * 1976-06-10 1980-01-22 Ciba-Geigy Aktiengesellschaft Process for the manufacture of photographic silver halide emulsions containing silver halide crystals of the twinned type
US4184877A (en) * 1976-06-10 1980-01-22 Ciba-Geigy Ag Process for the manufacture of photographic silver halide emulsions containing silver halide crystals of the twinned type
US4279987A (en) * 1978-11-14 1981-07-21 Konishiroku Photo Industry Co., Ltd. Light-sensitive, direct positive silver halide photographic material
US4286055A (en) * 1979-08-11 1981-08-25 E. I. Du Pont De Nemours And Company Process for the preparation of monodisperse photographic silver halide emulsions of improved sensitivity
US4301241A (en) * 1979-04-23 1981-11-17 Fuji Photo Film Co., Ltd. Process for forming light-sensitive silver halide crystals
US4335199A (en) * 1980-02-19 1982-06-15 E. I. Du Pont De Nemours And Company High contrast by imagewise iodide infection in a mixed silver halide system
US4444865A (en) * 1981-11-12 1984-04-24 Eastman Kodak Company Blended grain direct-positive emulsions and photographic elements and processes for their use
US4444874A (en) * 1982-09-15 1984-04-24 Eastman Kodak Company Photographic elements containing direct-positive emulsions and processes for their use
US4459351A (en) * 1983-06-22 1984-07-10 Eastman Kodak Company Photographic element and process employed combination of surface and internal latent image silver halide
US4504570A (en) * 1982-09-30 1985-03-12 Eastman Kodak Company Direct reversal emulsions and photographic elements useful in image transfer film units
EP0143424A2 (de) 1983-11-25 1985-06-05 Fuji Photo Film Co., Ltd. Wärmeentwickelbares lichtempfindliches Material
USRE32097E (en) * 1981-11-12 1986-03-25 Eastman Kodak Company Blended grain direct-positive emulsions and photographic elements and processes for their use
USRE32149E (en) * 1982-09-15 1986-05-20 Eastman Kodak Company Photographic elements containing direct-positive emulsions and processes for their use
EP0198634A2 (de) 1985-04-04 1986-10-22 EASTMAN KODAK COMPANY (a New Jersey corporation) Quaternisierte Telluriumsalz schleierhemmende Mittel für Silberhalogenidphotographie
EP0200011A1 (de) 1985-03-30 1986-11-05 Fuji Photo Film Co., Ltd. Wärmeentwickelbares lichtempfindliches Material
EP0200206A2 (de) 1985-04-30 1986-11-05 Konica Corporation Photographisches lichtempfindliches Silberhalogenidmaterial
EP0200216A2 (de) 1985-04-30 1986-11-05 Fuji Photo Film Co., Ltd. Wärmeentwickelbares lichtempfindliches Material
EP0201027A2 (de) 1985-04-30 1986-11-12 Konica Corporation Photographisches lichtempfindliches Silberhalogenidmaterial
EP0202784A2 (de) 1985-04-23 1986-11-26 Konica Corporation Photographisches lichtempfindliches Silberhalogenidmaterial
EP0204530A2 (de) 1985-05-31 1986-12-10 Konica Corporation Verfahren zur Herstellung eines direkt positiven Farbbildes
EP0209118A2 (de) 1985-07-17 1987-01-21 Konica Corporation Photographisches Silberhalogenidmaterial
EP0210660A2 (de) 1985-07-31 1987-02-04 Fuji Photo Film Co., Ltd. Verfahren zur Bildung eines Bildes
EP0224214A2 (de) 1985-11-21 1987-06-03 Fuji Photo Film Co., Ltd. Lichtempfindliche Mikrokapsel, die Silberhalogenid und eine polymerisierbare Verbindung enthält und lichtempfindliches Material, das diese gebraucht
US4710631A (en) * 1984-08-28 1987-12-01 Fuji Photo Film Co., Ltd. Temperature compensation for a semiconductor light source used for exposure of light sensitive material
EP0318987A1 (de) 1987-12-02 1989-06-07 Fuji Photo Film Co., Ltd. Photographisches lichtempfindliches Direktpositiv-Material
US4863838A (en) * 1979-03-26 1989-09-05 Konishiroku Photo Industry Co., Ltd. Direct positive type light-sensitive silver halide photographic materials
US4865962A (en) * 1986-12-26 1989-09-12 Fuji Photo Film Co., Ltd. Photographic light-sensitive material and method of developing the same
JPH01239550A (ja) * 1988-03-22 1989-09-25 Fuji Photo Film Co Ltd 直接ポジカラー画像形成方法
US4871658A (en) * 1986-01-24 1989-10-03 Konishiroku Photo Industry Co., Ltd. Silver halide photographic material that is resistant to fogging during storage
US4910130A (en) * 1986-11-25 1990-03-20 Konica Corporation Direct positive light-sensitive silver halide photographic material
EP0476327A1 (de) 1990-08-20 1992-03-25 Fuji Photo Film Co., Ltd. Datenbehaltendes photographisches Filmerzeugnis und Verfahren zur Herstellung eines Farbbildes
US5279920A (en) * 1991-11-01 1994-01-18 Konica Corporation Silver halide photographic light sensitive material
US5292611A (en) * 1991-12-17 1994-03-08 Konica Corporation Dye image forming method
US5411849A (en) * 1992-12-10 1995-05-02 Konica Corporation Silver halide photographic light-sensitive material
US5424170A (en) * 1993-08-31 1995-06-13 Konica Corporation Silver halide photographic light sensitive material
EP0690342A1 (de) 1994-06-28 1996-01-03 Konica Corporation Verbundmaterial aus einem lichtempfindlichen photographischen Silberhalogenid-Material und einem radiographischen Verstärkerschirm
USH1547H (en) * 1992-10-15 1996-06-04 Konica Corporation Silver halide photographic light-sensitive material for laser-beam-scanning use
US5547810A (en) * 1994-09-16 1996-08-20 Konica Corporation Image forming method with alkali precursor
EP0754967A1 (de) 1995-07-14 1997-01-22 Agfa-Gevaert N.V. Einen speziellen Stabilisator enthaltendes photographisches Direktpositivmaterial
EP0782041A2 (de) 1995-12-27 1997-07-02 Fuji Photo Film Co., Ltd. Lichtempfindliches photographisches Silberhalogenid-Material
EP0782042A2 (de) 1995-12-27 1997-07-02 Fuji Photo Film Co., Ltd. Hydrazin-Verbindung und diese enthaltendes photographisches Silberhalogenidmaterial
EP0843209A1 (de) 1996-11-13 1998-05-20 Imation Corp. Verfahren zur Herstellung einer Silberhalogenidemulsion
US10217888B2 (en) 2016-10-06 2019-02-26 International Business Machines Corporation Solution-phase inclusion of silver into chalcogenide semiconductor inks

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* Cited by examiner, † Cited by third party
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NL132990C (de) * 1965-04-01
JPS5945437A (ja) * 1982-09-08 1984-03-14 Konishiroku Photo Ind Co Ltd ハロゲン化銀乳剤およびその製造方法
JPS59188641A (ja) 1983-04-11 1984-10-26 Fuji Photo Film Co Ltd ハロゲン化銀写真乳剤
JP2007041376A (ja) 2005-08-04 2007-02-15 Fujifilm Holdings Corp ハロゲン化銀感光材料およびそれを包含する包装体
EP2619628B1 (de) 2010-09-17 2014-03-26 Fujifilm Manufacturing Europe BV Photographisches papier und sein gebrauch in ein photoalbum
GB202006061D0 (en) 2020-04-24 2020-06-10 Fujifilm Mfg Europe Bv Photographic paper

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2401051A (en) * 1939-09-26 1946-05-28 Photo Positive Corp Photographic emulsions and methods

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2401051A (en) * 1939-09-26 1946-05-28 Photo Positive Corp Photographic emulsions and methods

Cited By (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3000739A (en) * 1957-04-02 1961-09-19 Du Pont Process for preparing silver halide emulsions
US3031304A (en) * 1958-08-20 1962-04-24 Albert J Oliver Fine grain nuclear emulsion
US3237008A (en) * 1961-01-19 1966-02-22 Eastman Kodak Co Roomlight handling radiographic element including an x-ray sensitive layer overcoated with a dye desensitized silver halide emulsion
JPS5129012B1 (de) * 1962-09-01 1976-08-23
US3531288A (en) * 1966-03-11 1970-09-29 Eastman Kodak Co Direct positive silver halide emulsions containing excess iodide
US3531290A (en) * 1966-03-11 1970-09-29 Eastman Kodak Co Direct positive silver halide emulsions containing excess halide
DE2112729A1 (de) * 1970-03-20 1971-09-30 Eastman Kodak Co Farbphotographisches Aufzeichnungsmaterial
US3837857A (en) * 1970-05-14 1974-09-24 Eastman Kodak Co Photographic materials curve shape stabilized with carboxy substituted 4-thiouracils
US3979213A (en) * 1972-06-19 1976-09-07 Gilman Jr Paul B Spectrally sensitized silver halide emulsion containing an internal metal dopant
US3917485A (en) * 1973-01-18 1975-11-04 Eastman Kodak Co Method of making photographic silver halide emulsions and products thereof
US3966476A (en) * 1973-02-09 1976-06-29 Agfa-Gevaert, A.G. Spectrally sensitized silver halide emulsion containing more than 50% of the grains with ripening nuclei in cavities
US3935014A (en) * 1973-02-20 1976-01-27 Agfa-Gevaert Aktiengesellschaft Direct-positive photographic emulsion containing, unfogged, monodispersed silver halide grains having a layered grain structure of specific silver chloride content
US3957488A (en) * 1973-06-28 1976-05-18 Agfa-Gevaert, A.G. Photographic emulsion containing unfogged, heterodisperse layered silver halide grains having a prodominantly bromide core and total chloride content less than 30 mole percent
US3894871A (en) * 1973-07-27 1975-07-15 Polaroid Corp Photographic products and processes for forming silver and additive color transparencies
DE2436180A1 (de) * 1973-07-27 1975-02-13 Polaroid Corp Silberhalogenidemulsionen mit substituiertem halogenid und produkte, die diese emulsionen enthalten
US3976486A (en) * 1973-07-27 1976-08-24 Polaroid Corporation Diffusion transfer color products and processes with substituted halide silver halide emulsions
DE2436101A1 (de) * 1973-07-27 1975-02-06 Polaroid Corp Fotografisches produkt und verfahren
US4165986A (en) * 1973-07-27 1979-08-28 Polaroid Corporation Substituted-halide silver halide emulsions and products containing same
US4070190A (en) * 1973-09-03 1978-01-24 E. I. Du Pont De Nemours And Company Process for producing photographic silver halide emulsions having a core/shell structure
US3990895A (en) * 1974-04-23 1976-11-09 Polaroid Corporation Silver halide, color screen elements and their use in forming negative color images and diffusion transfer positive silver images
DE2528638A1 (de) * 1974-06-26 1976-01-15 Minnesota Mining & Mfg Pivalylacetanilide und diese verbindungen enthaltendes photographisches aufzeichnungsmaterial
US4075020A (en) * 1975-07-30 1978-02-21 Agfa-Gevaert Aktiengesellschaft Process for the preparation of silver halide emulsions
US4030920A (en) * 1976-04-12 1977-06-21 Eastman Kodak Company Processing compositions containing glycols for color transfer processes comprising direct positive silver halide developement
US4184877A (en) * 1976-06-10 1980-01-22 Ciba-Geigy Ag Process for the manufacture of photographic silver halide emulsions containing silver halide crystals of the twinned type
US4150994A (en) * 1976-06-10 1979-04-24 Ciba-Geigy Ag Process for the manufacture of photographic silver halide emulsions containing silver halide crystals of the twinned type
US4184878A (en) * 1976-06-10 1980-01-22 Ciba-Geigy Aktiengesellschaft Process for the manufacture of photographic silver halide emulsions containing silver halide crystals of the twinned type
JPS537233A (en) * 1976-07-08 1978-01-23 Mitsubishi Paper Mills Ltd Multicolor photographic material having improved blue sensitive layer
JPS5515019B2 (de) * 1976-07-08 1980-04-21
US4142900A (en) * 1977-02-18 1979-03-06 Eastman Kodak Company Converted-halide photographic emulsions and elements having composite silver halide crystals
EP0006543A1 (de) * 1978-06-27 1980-01-09 Agfa-Gevaert AG Lichtempfindliches photographisches Material, Verfahren zu dessen Herstellung sowie Verwendung zur Herstellung photographischer Bilder
US4279987A (en) * 1978-11-14 1981-07-21 Konishiroku Photo Industry Co., Ltd. Light-sensitive, direct positive silver halide photographic material
US4863838A (en) * 1979-03-26 1989-09-05 Konishiroku Photo Industry Co., Ltd. Direct positive type light-sensitive silver halide photographic materials
US4301241A (en) * 1979-04-23 1981-11-17 Fuji Photo Film Co., Ltd. Process for forming light-sensitive silver halide crystals
US4286055A (en) * 1979-08-11 1981-08-25 E. I. Du Pont De Nemours And Company Process for the preparation of monodisperse photographic silver halide emulsions of improved sensitivity
US4335199A (en) * 1980-02-19 1982-06-15 E. I. Du Pont De Nemours And Company High contrast by imagewise iodide infection in a mixed silver halide system
US4444865A (en) * 1981-11-12 1984-04-24 Eastman Kodak Company Blended grain direct-positive emulsions and photographic elements and processes for their use
USRE32097E (en) * 1981-11-12 1986-03-25 Eastman Kodak Company Blended grain direct-positive emulsions and photographic elements and processes for their use
US4444874A (en) * 1982-09-15 1984-04-24 Eastman Kodak Company Photographic elements containing direct-positive emulsions and processes for their use
USRE32149E (en) * 1982-09-15 1986-05-20 Eastman Kodak Company Photographic elements containing direct-positive emulsions and processes for their use
US4504570A (en) * 1982-09-30 1985-03-12 Eastman Kodak Company Direct reversal emulsions and photographic elements useful in image transfer film units
US4459351A (en) * 1983-06-22 1984-07-10 Eastman Kodak Company Photographic element and process employed combination of surface and internal latent image silver halide
EP0143424A2 (de) 1983-11-25 1985-06-05 Fuji Photo Film Co., Ltd. Wärmeentwickelbares lichtempfindliches Material
US4710631A (en) * 1984-08-28 1987-12-01 Fuji Photo Film Co., Ltd. Temperature compensation for a semiconductor light source used for exposure of light sensitive material
EP0200011A1 (de) 1985-03-30 1986-11-05 Fuji Photo Film Co., Ltd. Wärmeentwickelbares lichtempfindliches Material
EP0198634A2 (de) 1985-04-04 1986-10-22 EASTMAN KODAK COMPANY (a New Jersey corporation) Quaternisierte Telluriumsalz schleierhemmende Mittel für Silberhalogenidphotographie
EP0202784A2 (de) 1985-04-23 1986-11-26 Konica Corporation Photographisches lichtempfindliches Silberhalogenidmaterial
EP0200206A2 (de) 1985-04-30 1986-11-05 Konica Corporation Photographisches lichtempfindliches Silberhalogenidmaterial
EP0201027A2 (de) 1985-04-30 1986-11-12 Konica Corporation Photographisches lichtempfindliches Silberhalogenidmaterial
US4990437A (en) * 1985-04-30 1991-02-05 Konishiroku Photo Industry Co., Ltd. Silver halide photographic light-sensitive material
EP0200216A2 (de) 1985-04-30 1986-11-05 Fuji Photo Film Co., Ltd. Wärmeentwickelbares lichtempfindliches Material
EP0204530A2 (de) 1985-05-31 1986-12-10 Konica Corporation Verfahren zur Herstellung eines direkt positiven Farbbildes
EP0209118A2 (de) 1985-07-17 1987-01-21 Konica Corporation Photographisches Silberhalogenidmaterial
EP0210660A2 (de) 1985-07-31 1987-02-04 Fuji Photo Film Co., Ltd. Verfahren zur Bildung eines Bildes
EP0224214A2 (de) 1985-11-21 1987-06-03 Fuji Photo Film Co., Ltd. Lichtempfindliche Mikrokapsel, die Silberhalogenid und eine polymerisierbare Verbindung enthält und lichtempfindliches Material, das diese gebraucht
US4871658A (en) * 1986-01-24 1989-10-03 Konishiroku Photo Industry Co., Ltd. Silver halide photographic material that is resistant to fogging during storage
US4910130A (en) * 1986-11-25 1990-03-20 Konica Corporation Direct positive light-sensitive silver halide photographic material
US4865962A (en) * 1986-12-26 1989-09-12 Fuji Photo Film Co., Ltd. Photographic light-sensitive material and method of developing the same
EP0318987A1 (de) 1987-12-02 1989-06-07 Fuji Photo Film Co., Ltd. Photographisches lichtempfindliches Direktpositiv-Material
JPH01239550A (ja) * 1988-03-22 1989-09-25 Fuji Photo Film Co Ltd 直接ポジカラー画像形成方法
EP0476327A1 (de) 1990-08-20 1992-03-25 Fuji Photo Film Co., Ltd. Datenbehaltendes photographisches Filmerzeugnis und Verfahren zur Herstellung eines Farbbildes
US5279920A (en) * 1991-11-01 1994-01-18 Konica Corporation Silver halide photographic light sensitive material
US5292611A (en) * 1991-12-17 1994-03-08 Konica Corporation Dye image forming method
USH1547H (en) * 1992-10-15 1996-06-04 Konica Corporation Silver halide photographic light-sensitive material for laser-beam-scanning use
US5411849A (en) * 1992-12-10 1995-05-02 Konica Corporation Silver halide photographic light-sensitive material
US5424170A (en) * 1993-08-31 1995-06-13 Konica Corporation Silver halide photographic light sensitive material
EP0690342A1 (de) 1994-06-28 1996-01-03 Konica Corporation Verbundmaterial aus einem lichtempfindlichen photographischen Silberhalogenid-Material und einem radiographischen Verstärkerschirm
US5547810A (en) * 1994-09-16 1996-08-20 Konica Corporation Image forming method with alkali precursor
EP0754967A1 (de) 1995-07-14 1997-01-22 Agfa-Gevaert N.V. Einen speziellen Stabilisator enthaltendes photographisches Direktpositivmaterial
EP0782041A2 (de) 1995-12-27 1997-07-02 Fuji Photo Film Co., Ltd. Lichtempfindliches photographisches Silberhalogenid-Material
EP0782042A2 (de) 1995-12-27 1997-07-02 Fuji Photo Film Co., Ltd. Hydrazin-Verbindung und diese enthaltendes photographisches Silberhalogenidmaterial
EP0843209A1 (de) 1996-11-13 1998-05-20 Imation Corp. Verfahren zur Herstellung einer Silberhalogenidemulsion
US10217888B2 (en) 2016-10-06 2019-02-26 International Business Machines Corporation Solution-phase inclusion of silver into chalcogenide semiconductor inks
US10840404B2 (en) 2016-10-06 2020-11-17 International Business Machines Corporation Solution-phase inclusion of silver into chalcogenide semiconductor inks

Also Published As

Publication number Publication date
CH284107A (fr) 1952-07-15
DE851716C (de) 1952-10-06
FR966221A (fr) 1950-10-04
GB635841A (en) 1950-04-19

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