GB1151782A - Photographic silver halide emulsions - Google Patents

Photographic silver halide emulsions

Info

Publication number
GB1151782A
GB1151782A GB54615/68A GB5461568A GB1151782A GB 1151782 A GB1151782 A GB 1151782A GB 54615/68 A GB54615/68 A GB 54615/68A GB 5461568 A GB5461568 A GB 5461568A GB 1151782 A GB1151782 A GB 1151782A
Authority
GB
United Kingdom
Prior art keywords
cores
salt
silver salt
emulsion
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.)
Expired
Application number
GB54615/68A
Inventor
Robert William Berriman
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB1151782A publication Critical patent/GB1151782A/en
Expired legal-status Critical Current

Links

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
    • G03C1/485—Direct positive emulsions
    • G03C1/48515—Direct positive emulsions prefogged
    • G03C1/48523—Direct positive emulsions prefogged characterised by the desensitiser

Abstract

1,151,782. Photographic silver halide materials. EASTMAN KODAK CO. April 15, 1966 [April 15, 1965], No. 54615/68. Divided out of 1,151,781. Heading G2C. A photographic silver salt emulsion is made by forming cores comprising grains of a first lightsensitive silver salt, treating the cores with an iridium salt and then covering the cores with a layer of a second light-sensitive silver salt. The silver salts may be halides or the thiocyanate, phosphate, cyanide or carbonate. The treatment with the iridium salt may be effected by adding an aqueous solution of the salt to an emulsion containing the grains of the first silver salt. The shells are then formed on to the cores by precipitating the second silver salt in the presence of the cores, or by allowing the cores to ripen in the presence of a previously prepared emulsion of the second silver salt. The specified iridium salt is potassium chloroiridite. After coating on to a support, the emulsion may be used to give a direct positive image by overall fogging with light followed by an imagewise exposure and processing. . Reference has been directed by the Comptroller to Specification 1,011,062.
GB54615/68A 1965-04-15 1966-04-15 Photographic silver halide emulsions Expired GB1151782A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US448467A US3367778A (en) 1965-04-15 1965-04-15 Silver salt direct positive emulsion

Publications (1)

Publication Number Publication Date
GB1151782A true GB1151782A (en) 1969-05-14

Family

ID=23780413

Family Applications (2)

Application Number Title Priority Date Filing Date
GB16507/66A Expired GB1151781A (en) 1965-04-15 1966-04-15 Photographic direct positive emulsions and Sensitive Materials
GB54615/68A Expired GB1151782A (en) 1965-04-15 1966-04-15 Photographic silver halide emulsions

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB16507/66A Expired GB1151781A (en) 1965-04-15 1966-04-15 Photographic direct positive emulsions and Sensitive Materials

Country Status (2)

Country Link
US (2) US3367778A (en)
GB (2) GB1151781A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0244184A2 (en) * 1986-04-26 1987-11-04 Konica Corporation Light-sensitive silver halide photographic material
EP0312999A1 (en) * 1987-10-19 1989-04-26 Fuji Photo Film Co., Ltd. Silver halide photographic materials

Families Citing this family (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3542772A (en) * 1966-03-11 1970-11-24 Eastman Kodak Co Cyanine dyes containing a 1-heterocyclic substituted 4-pyrazolyl nucleus
US3510348A (en) * 1966-03-11 1970-05-05 Eastman Kodak Co Direct positive recording film
US3531291A (en) * 1967-04-07 1970-09-29 Eastman Kodak Co Silver halide emulsions capable of being chemically or photo developed
US3632340A (en) * 1968-09-09 1972-01-04 Eastman Kodak Co Cored direct positive silver halide emulsion developed with polyhydroxybenzene
GB1306801A (en) * 1969-04-02 1973-02-14 Agfa Gevaert Ag Production of photographic silver images
GB1323111A (en) * 1970-04-01 1973-07-11 Agfa Gevaert Photographic direct positive silver halide material
US3970461A (en) * 1970-10-01 1976-07-20 Fuji Photo Film Co., Ltd. Fogged, direct-positive silver halide emulsion containing carbocyanine dye having indolenine nucleus
US3719494A (en) * 1970-10-30 1973-03-06 Eastman Kodak Co Silver halide emulsion containing a dihydroaromatic quaternary salt nucleating agent and the use thereof
US3854949A (en) * 1971-03-10 1974-12-17 Eastman Kodak Co Silver halide photographic compositions and processes for obtaining positive images
US3779777A (en) * 1971-11-09 1973-12-18 Du Pont Silver halide emulsion sensitized with a polyhedral haloborane
BE795121A (en) * 1972-02-18 1973-08-08 Agfa Gevaert Nv PHOTOGRAPHIC DIRECT-POSITIVE EMULSIONS
DE2216075A1 (en) * 1972-04-01 1973-10-11 Agfa Gevaert Ag PHOTOGRAPHIC MATERIAL FOR THE PRODUCTION OF DIRECT POSITIVE PHOTOGRAPHIC IMAGES
DE2224837C3 (en) * 1972-05-20 1986-05-07 Agfa-Gevaert Ag, 5090 Leverkusen Direct positive photographic recording material
DE2260117A1 (en) * 1972-12-08 1974-06-12 Agfa Gevaert Ag PHOTOGRAPHIC MATERIAL FOR THE PRODUCTION OF DIRECT POSITIVE IMAGES
US4045228A (en) * 1972-12-08 1977-08-30 Agfa-Gevaert N.V. Direct positive emulsions containing fogged, monodispersed silver halide grains having more than 10 mile % iodide
DE2263246A1 (en) * 1972-12-23 1974-07-04 Agfa Gevaert Ag PHOTOGRAPHIC MATERIAL FOR THE PRODUCTION OF DIRECT POSITIVE PHOTOGRAPHIC IMAGES
US3917485A (en) * 1973-01-18 1975-11-04 Eastman Kodak Co Method of making photographic silver halide emulsions and products thereof
DE2306447C2 (en) * 1973-02-09 1986-10-02 Agfa-Gevaert Ag, 5090 Leverkusen Photographic recording material
DE2308239C2 (en) * 1973-02-20 1984-09-13 Agfa-Gevaert Ag, 5090 Leverkusen Direct positive photographic recording material
JPS5647544B2 (en) * 1973-03-27 1981-11-10
GB1468816A (en) * 1973-06-08 1977-03-30 Agfa Gevaert Photographic direct positive silver halide compositions
GB1447502A (en) * 1973-06-18 1976-08-25 Agfa Gevaert Method of preparing direct-positive silver halide elements
JPS5068133A (en) * 1973-10-18 1975-06-07
US4009041A (en) * 1974-10-03 1977-02-22 Polaroid Corporation Fogged, direct-positive silver halide emulsion containing a gallium sulfide semiconductor
US4011083A (en) * 1974-12-10 1977-03-08 Eastman Kodak Company Surface sensitive silver halide emulsion containing a silver complexing azaindene to reduce desensitization of optical sensitizing dye incorporated therein
DE2708466A1 (en) * 1977-02-26 1978-08-31 Agfa Gevaert Ag EMULSION MIXTURES FOR COLOR REVERSE (SUPERVISORY) MATERIAL
US4246337A (en) * 1978-05-01 1981-01-20 Corning Glass Works Photosensitive medium for optical information storage
JPS6055820B2 (en) * 1979-03-26 1985-12-06 コニカ株式会社 Direct positive silver halide photographic material
US4327172A (en) * 1980-12-16 1982-04-27 Western Electric Company, Inc. Photographic image definition improvement
JPS6055822B2 (en) * 1982-04-26 1985-12-06 コニカ株式会社 Direct positive silver halide photographic material
JPS5948755A (en) * 1982-09-13 1984-03-21 Konishiroku Photo Ind Co Ltd Silver halide photographic emulsion
JPS59100438A (en) * 1982-11-30 1984-06-09 Fuji Photo Film Co Ltd Method for developing photosensitive silver halide material
JPS59147350A (en) * 1983-02-10 1984-08-23 Fuji Photo Film Co Ltd Method for developing silver halide photosensitive material
JPS59148051A (en) * 1983-02-14 1984-08-24 Fuji Photo Film Co Ltd Photosensitive silver halide material
JPS59214852A (en) * 1983-05-20 1984-12-04 Fuji Photo Film Co Ltd Color photosensitive material
JPS59216136A (en) * 1983-05-24 1984-12-06 Fuji Photo Film Co Ltd Photosensitive material for direct positive
DE3482606D1 (en) 1983-11-25 1990-08-02 Fuji Photo Film Co Ltd HEAT-DEVELOPABLE LIGHT-SENSITIVE MATERIAL.
US4552838A (en) * 1984-05-18 1985-11-12 Eastman Kodak Company Processes for the preparation of silver halide emulsions of controlled grain size distribution, emulsions produced thereby, and photographic elements
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
US4775613A (en) 1985-03-30 1988-10-04 Fuji Photo Film Co., Ltd. Heat-developable light-sensitive material
CA1303412C (en) 1985-05-31 1992-06-16 Shigeharu Koboshi Method for forming direct positive color image
US4643966A (en) * 1985-09-03 1987-02-17 Eastman Kodak Company Emulsions and photographic elements containing ruffled silver halide grains
CA1280312C (en) 1985-09-03 1991-02-19 Joe Edward Maskasky Emulsions and photographic elements containing ruffled silver halide grains
US4814263A (en) * 1987-07-21 1989-03-21 Minnesota Mining And Manufacturing Company Direct-positive silver halide emulsion
US4902611A (en) * 1989-01-06 1990-02-20 Leubner Ingo H Preparation of silver halide emulsions containing iridium
JP3041736B2 (en) * 1991-11-01 2000-05-15 コニカ株式会社 Silver halide photographic material
EP0650087B1 (en) * 1993-08-31 2000-01-26 Konica Corporation Silver halide photographic light sensitive material
US5395746A (en) * 1994-02-25 1995-03-07 Eastman Kodak Company Inherently stable high chloride tabular grains with improved blue absorption
US5491058A (en) 1994-08-09 1996-02-13 Eastman Kodak Company Film for duplicating silver images in radiographic films
EP0754967A1 (en) 1995-07-14 1997-01-22 Agfa-Gevaert N.V. Photographic direct positive material containing a particular stabilizer
JP2002258410A (en) * 2001-02-28 2002-09-11 Dainippon Printing Co Ltd Lenticular lens sheet with light shielding layer and method for producing the same
AU2010355508B2 (en) * 2010-06-16 2013-09-26 All India Institute Of Medical Sciences SealBio: a novel non-obturation regenerative technique of endodontic treatment.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE476292A (en) * 1946-04-01
GB723019A (en) * 1952-02-05 1955-02-02 Gevaert Photo Prod Nv Improvements in or relating to the manufacture of photographic material
US2717833A (en) * 1952-05-12 1955-09-13 Sperry Rand Corp Direct positive emulsions
BE609927A (en) * 1959-01-12
US3206313A (en) * 1961-05-15 1965-09-14 Eastman Kodak Co Chemically sensitized emulsions having low surface sensitivity and high internal sensitivity
BE636801A (en) * 1962-09-01
FR1367941A (en) * 1962-09-01 1964-07-24 Agfa Ag photographic silver halide emulsion containing composite silver halide grains having an extremely narrow particle size distribution

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0244184A2 (en) * 1986-04-26 1987-11-04 Konica Corporation Light-sensitive silver halide photographic material
EP0244184A3 (en) * 1986-04-26 1989-02-08 Konishiroku Photo Industry Co. Ltd. Light-sensitive silver halide photographic material
EP0312999A1 (en) * 1987-10-19 1989-04-26 Fuji Photo Film Co., Ltd. Silver halide photographic materials
US5284743A (en) * 1987-10-19 1994-02-08 Fuji Photo Film Co., Ltd. Silver halide photographic materials

Also Published As

Publication number Publication date
US3367778A (en) 1968-02-06
GB1151781A (en) 1969-05-14
USRE29974E (en) 1979-04-24

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
414A Case decided by the comptroller ** specification amended (sect. 14/1949)
SPA Amended specification published
PS Patent sealed [section 19, patents act 1949]
PE Patent expired