GB1414833A - Direct-positive photographic silver halide emulsions - Google Patents

Direct-positive photographic silver halide emulsions

Info

Publication number
GB1414833A
GB1414833A GB898573A GB898573A GB1414833A GB 1414833 A GB1414833 A GB 1414833A GB 898573 A GB898573 A GB 898573A GB 898573 A GB898573 A GB 898573A GB 1414833 A GB1414833 A GB 1414833A
Authority
GB
United Kingdom
Prior art keywords
direct
silver halide
halide emulsions
photographic silver
positive 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.)
Expired
Application number
GB898573A
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 GB1414833A publication Critical patent/GB1414833A/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
    • G03C1/48538—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure
    • G03C1/48584—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure spectrally sensitised
    • 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
    • G03C1/4853—Direct positive emulsions prefogged characterised by the desensitiser polymethine dyes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/141—Direct positive material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
GB898573A 1972-02-29 1973-02-23 Direct-positive photographic silver halide emulsions Expired GB1414833A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23049272A 1972-02-29 1972-02-29

Publications (1)

Publication Number Publication Date
GB1414833A true GB1414833A (en) 1975-11-19

Family

ID=22865442

Family Applications (1)

Application Number Title Priority Date Filing Date
GB898573A Expired GB1414833A (en) 1972-02-29 1973-02-23 Direct-positive photographic silver halide emulsions

Country Status (6)

Country Link
US (1) US3772030A (en)
JP (1) JPS48101119A (en)
BE (1) BE796122A (en)
CA (1) CA1000991A (en)
FR (1) FR2174113B1 (en)
GB (1) GB1414833A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1427525A (en) * 1972-07-13 1976-03-10 Agfa Gevaert Directpositive silver halide emulsions
US4110116A (en) * 1973-06-18 1978-08-29 Minnesota Mining And Manufacturing Company Fogged direct positive silver halide emulsion containing a cyanine dye having at least one benzoxazole or benzothiazole nucleus substituted with halogen atoms
US3936308A (en) * 1973-08-16 1976-02-03 Eastman Kodak Company Photographic emulsions containing methine dyes having a 1H-imidazo[4,5-b]pyrazine nucleus
US3935010A (en) * 1974-09-03 1976-01-27 Eastman Kodak Company Element and process for selectively forming positive or negative photographic images
JPS5854379B2 (en) * 1976-04-28 1983-12-05 コニカ株式会社 Direct positive silver halide photographic material
US4273862A (en) * 1977-06-11 1981-06-16 Mitsubishi Paper Mills, Ltd. Direct-positive silver halide photographic sensitive materials
US4207103A (en) * 1978-06-26 1980-06-10 Eastman Kodak Company Photographic print-out silver halide process
US4433050A (en) * 1980-09-11 1984-02-21 Konishiroku Photo Industry Co., Ltd. Direct positive type light sensitive silver halide photographic material
US4355098A (en) * 1981-02-11 1982-10-19 E. I. Du Pont De Nemours And Company Supersensitizing direct positive dye combinations
JPS5978338A (en) * 1982-10-27 1984-05-07 Fuji Photo Film Co Ltd Spectrally sensitized internal latent image type silver halide photographic emulsion
JPS6010241A (en) * 1983-06-29 1985-01-19 Fuji Photo Film Co Ltd Internal latent image type direct positive silver halide emulsion
JPS6073625A (en) * 1983-09-30 1985-04-25 Fuji Photo Film Co Ltd Method for controlling re-reversal negative image in direct positive photosensitive silver halide material
JPS63273855A (en) * 1987-05-01 1988-11-10 Konica Corp Silver halide photographic sensitive material for direct positive having excellent retouching property and high whiteness
US4933273A (en) * 1988-12-02 1990-06-12 Eastman Kodak Company Photographic element and emulsion having enhanced sensitometric properties and process of development
EP1178083A4 (en) * 1999-12-17 2002-05-29 Hayashibara Biochem Lab Cyanine dye

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3206313A (en) * 1961-05-15 1965-09-14 Eastman Kodak Co Chemically sensitized emulsions having low surface sensitivity and high internal sensitivity
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
FR1492132A (en) * 1965-05-24 1967-08-18 Eastman Kodak Co New photographic emulsions and new photographic products containing these emulsions
GB1150013A (en) * 1965-09-22 1969-04-30 Fuji Photo Film Co Ltd A Process for the Production of a Silver Halide Emulsion
US3528811A (en) * 1967-05-17 1970-09-15 Eastman Kodak Co Photographic emulsions containing a pyrimidinedione and a desensitizing nucleus linked by a dimethine or a double bond
US3558320A (en) * 1967-08-14 1971-01-26 Eastman Kodak Co Direct positive silver halide emulsions containing 3 - nitrosoindole cyanine dyes
US3650758A (en) * 1970-07-20 1972-03-21 Eastman Kodak Co Direct-positive print-out silver halide emulsion fogged to visible density

Also Published As

Publication number Publication date
DE2307805A1 (en) 1973-09-13
FR2174113B1 (en) 1977-02-04
JPS48101119A (en) 1973-12-20
DE2307805B2 (en) 1976-10-07
FR2174113A1 (en) 1973-10-12
US3772030A (en) 1973-11-13
BE796122A (en) 1973-08-28
CA1000991A (en) 1976-12-07

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee