BE774656A - Procede photographique pour former des images positives directes - Google Patents

Procede photographique pour former des images positives directes

Info

Publication number
BE774656A
BE774656A BE774656A BE774656A BE774656A BE 774656 A BE774656 A BE 774656A BE 774656 A BE774656 A BE 774656A BE 774656 A BE774656 A BE 774656A BE 774656 A BE774656 A BE 774656A
Authority
BE
Belgium
Prior art keywords
photographic process
direct positive
positive images
forming direct
forming
Prior art date
Application number
BE774656A
Other languages
English (en)
Inventor
J Spence
D E Janssen
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 BE774656A publication Critical patent/BE774656A/fr

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
    • G03C1/48546—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure characterised by the nucleating/fogging agent
    • G03C1/48561—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure characterised by the nucleating/fogging agent hydrazine compounds
    • 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

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)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Plural Heterocyclic Compounds (AREA)
BE774656A 1970-10-30 1971-10-28 Procede photographique pour former des images positives directes BE774656A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8570570A 1970-10-30 1970-10-30

Publications (1)

Publication Number Publication Date
BE774656A true BE774656A (fr) 1972-02-14

Family

ID=22193408

Family Applications (1)

Application Number Title Priority Date Filing Date
BE774656A BE774656A (fr) 1970-10-30 1971-10-28 Procede photographique pour former des images positives directes

Country Status (6)

Country Link
JP (1) JPS511416B1 (fr)
BE (1) BE774656A (fr)
CA (1) CA988351A (fr)
DE (1) DE2154028C3 (fr)
FR (1) FR2113370A5 (fr)
GB (1) GB1371366A (fr)

Also Published As

Publication number Publication date
GB1371366A (en) 1974-10-23
CA988351A (en) 1976-05-04
DE2154028B2 (de) 1973-07-05
DE2154028A1 (de) 1972-05-04
DE2154028C3 (de) 1974-01-31
JPS511416B1 (fr) 1976-01-17
FR2113370A5 (fr) 1972-06-23

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