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GB878064A - Improvements in or relating to photographic reproduction processes - Google Patents

Improvements in or relating to photographic reproduction processes

Info

Publication number
GB878064A
GB878064A GB2028459A GB2028459A GB878064A GB 878064 A GB878064 A GB 878064A GB 2028459 A GB2028459 A GB 2028459A GB 2028459 A GB2028459 A GB 2028459A GB 878064 A GB878064 A GB 878064A
Authority
GB
United Kingdom
Prior art keywords
emulsion
layer
developer
silver halide
reception layer
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
GB2028459A
Inventor
Anthony Joseph Axford
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.)
Ilford Imaging UK Ltd
Original Assignee
Ilford Ltd
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 Ilford Ltd filed Critical Ilford Ltd
Publication of GB878064A publication Critical patent/GB878064A/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
    • G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
    • G03C8/02—Photosensitive materials characterised by the image-forming section
    • G03C8/04—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of inorganic or organo-metallic compounds derived from photosensitive noble metals
    • G03C8/06—Silver salt diffusion transfer

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

878,064. Photographic diffusion transfer materials and processes. ILFORD Ltd. June 1, 1960 [June 12, 1959; July 20,1959], Nos. 20284/59 and 24878/59. Class 98(2) The material comprises a transparent film support, a reception layer containing nuclei, a white pigmented colloid layer or alternatively the presence of pigment in the reception layer, and a thin layer of gelatino silver halide emulsion. Exposure from the emulsion side and processing in the presence of a silver halide solvent as by immersion or application of developer solely to the emulsion surface, provides a positive image in the reception layer which can be viewed through the support against the background of the pigment. Preferably a neutralizing material such as acid phosphate is included in the reception layer, and the layer sequence has the advantage that such substance is inoperative until the developer penetrates the emulsion. Numerous further features and modifications include use of a viscous developer, retention of such on the emulsion by the presence of a further sheet which may or may not be removed, use of an outer, light-insensitive emulsion layer to provide a reservoir of silver halide and increase intensity of the positive image, and the incorporation of antihalation substances. A specific example of material and developer is provided. Specifications 614,155, 654,631, 746,948, 751,955 and 875,644 are referred to.
GB2028459A 1959-07-20 1959-06-12 Improvements in or relating to photographic reproduction processes Expired GB878064A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2487859 1959-07-20

Publications (1)

Publication Number Publication Date
GB878064A true GB878064A (en) 1961-09-27

Family

ID=10218684

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2028459A Expired GB878064A (en) 1959-07-20 1959-06-12 Improvements in or relating to photographic reproduction processes

Country Status (1)

Country Link
GB (1) GB878064A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3532497A (en) * 1963-08-05 1970-10-06 Eastman Kodak Co Nuclei for use in solvent transfer systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3532497A (en) * 1963-08-05 1970-10-06 Eastman Kodak Co Nuclei for use in solvent transfer systems

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