GB852340A - Process for obtaining multiple positive images by diffusion-transfer - Google Patents

Process for obtaining multiple positive images by diffusion-transfer

Info

Publication number
GB852340A
GB852340A GB5442/57A GB544257A GB852340A GB 852340 A GB852340 A GB 852340A GB 5442/57 A GB5442/57 A GB 5442/57A GB 544257 A GB544257 A GB 544257A GB 852340 A GB852340 A GB 852340A
Authority
GB
United Kingdom
Prior art keywords
positive
diffusion
transfer
multiple positive
feb
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
GB5442/57A
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.)
Gevaert Photo Producten NV
Original Assignee
Gevaert Photo Producten NV
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 Gevaert Photo Producten NV filed Critical Gevaert Photo Producten NV
Publication of GB852340A publication Critical patent/GB852340A/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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D9/00—Diffusion development apparatus

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

852,340. Silver halide diffusion-transfer process and positive material therefore. GEVAERT PHOTO-PRODUCTEN N.V. Feb. 18, 1957 [Feb. 17, 1956], No. 5442/57. Class 98(2) The process is adapted to the production of multiple positive copies by successive transfers from the same negative, for which purpose halogen ions are gradually liberated in the processing liquid after the development has started by inclusion of an alkali metal halide into the positive materials or of bromoacetic acid, triphenylmethyl phosphonium iodochloride or trimethyl sulphonium chloride into either the negative or the positive materials. Specifications 614,155 and 654,630 are referred to.
GB5442/57A 1956-02-17 1957-02-18 Process for obtaining multiple positive images by diffusion-transfer Expired GB852340A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE360901X 1956-02-17

Publications (1)

Publication Number Publication Date
GB852340A true GB852340A (en) 1960-10-26

Family

ID=3868417

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5442/57A Expired GB852340A (en) 1956-02-17 1957-02-18 Process for obtaining multiple positive images by diffusion-transfer

Country Status (5)

Country Link
BE (1) BE545312A (en)
CH (1) CH360901A (en)
FR (1) FR1166232A (en)
GB (1) GB852340A (en)
NL (1) NL214518A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL243731A (en) * 1959-09-24

Also Published As

Publication number Publication date
NL214518A (en)
BE545312A (en)
CH360901A (en) 1962-03-15
FR1166232A (en) 1958-11-04

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