GB1132736A - Photographic reproduction process - Google Patents

Photographic reproduction process

Info

Publication number
GB1132736A
GB1132736A GB50108/65A GB5010865A GB1132736A GB 1132736 A GB1132736 A GB 1132736A GB 50108/65 A GB50108/65 A GB 50108/65A GB 5010865 A GB5010865 A GB 5010865A GB 1132736 A GB1132736 A GB 1132736A
Authority
GB
United Kingdom
Prior art keywords
dye
leuco
aqueous solution
image
reproduction process
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
GB50108/65A
Inventor
Anne-Marie Denise Al Accary-Ve
Jacques Jean Louis Pouradier
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 GB1132736A publication Critical patent/GB1132736A/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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/40—Chemically transforming developed images
    • 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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/50—Reversal development; Contact processes
    • 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
    • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/26—Silver halide emulsions for subtractive colour processes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Abstract

1,132,736. Process for forming positive dye images. EASTMAN KODAK CO. Nov. 25, 1965 [Dec.1, 1964], No. 50108/65. Heading G2C. A direct positive dye image is obtained by imagewise exposing a silver halide emulsion layer developing it to less than maximum density with an aqueous solution of a leuco dye and then treating with an aqueous solution of a hydrohalic acid containing dissolving oxygen with or without additional oxidising agents e. g. quinone. The leuco dye may be the leuco form of methylene blue, crystal violet, methyl violet or basic fuchsin. The developed material may be heated to 70 to 80‹ C. to strengthen the image and fixed in thiourea solution.
GB50108/65A 1964-12-01 1965-11-25 Photographic reproduction process Expired GB1132736A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR996929A FR1424479A (en) 1964-12-01 1964-12-01 New process for obtaining positive photographic images directly

Publications (1)

Publication Number Publication Date
GB1132736A true GB1132736A (en) 1968-11-06

Family

ID=8843734

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50108/65A Expired GB1132736A (en) 1964-12-01 1965-11-25 Photographic reproduction process

Country Status (3)

Country Link
US (1) US3531283A (en)
FR (1) FR1424479A (en)
GB (1) GB1132736A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928043A (en) * 1973-11-16 1975-12-23 Eastman Kodak Co Photographic elements containing iodoso or iodoxy oxidants

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2151065A (en) * 1935-02-15 1939-03-21 Detracolor Ltd Photographic film and method of treating same
GB539781A (en) * 1940-01-19 1941-09-24 Eastman Kodak Co Improvements in methods of producing coloured photographic records
US2611701A (en) * 1947-11-06 1952-09-23 Gen Aniline & Film Corp Vat dye photoprints
US2892710A (en) * 1957-07-10 1959-06-30 Polaroid Corp Photographic products and processes
US3230083A (en) * 1959-04-02 1966-01-18 Polaroid Corp Photographic processes and products
US3320063A (en) * 1963-12-04 1967-05-16 Polaroid Corp Photographic developing agents and uses thereof

Also Published As

Publication number Publication date
US3531283A (en) 1970-09-29
FR1424479A (en) 1966-01-14

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