GB746946A - Improvements in photographic reproduction processes - Google Patents

Improvements in photographic reproduction processes

Info

Publication number
GB746946A
GB746946A GB2339152A GB2339152A GB746946A GB 746946 A GB746946 A GB 746946A GB 2339152 A GB2339152 A GB 2339152A GB 2339152 A GB2339152 A GB 2339152A GB 746946 A GB746946 A GB 746946A
Authority
GB
United Kingdom
Prior art keywords
silver halide
layer
development
developer
emulsion 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
GB2339152A
Inventor
Gerald Isaac Pasterna Levenson
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.)
Kodak Ltd
Original Assignee
Kodak 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
Priority to BE522176D priority Critical patent/BE522176A/xx
Application filed by Kodak Ltd filed Critical Kodak Ltd
Priority to GB2339152A priority patent/GB746946A/en
Priority to FR1082409D priority patent/FR1082409A/en
Publication of GB746946A publication Critical patent/GB746946A/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
    • G03C8/24—Photosensitive materials characterised by the image-receiving section
    • G03C8/26—Image-receiving layers
    • G03C8/28—Image-receiving layers containing development nuclei or compounds forming such nuclei

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

746,946. Photographic reversal images. KODAK, Ltd. Sept. 10, 1953 [Sept. 17, 1952], No. 23391/52. Class 98 (2). Photographic reversal images are formed by migratory transfer by contacting, in the presence of a silver halide solvent, an exposed and developed silver halide emulsion layer which contains developer, with a receiving layer containing a dispersion of zinc sulphide, selenide or telluride in an amount sufficient to react with only a part of the silver halide diffusing thereinto. The silver sulphide precipitated acts as development nuclei for the remainder of the silver halide diffusing thereinto. A diffusible developer may be contained in the silver halide emulsion layer, development being effected by treatment with an alkaline solution and the wet emulsion layer being then contacted with the receiving layer. The silver halide solvent may be contained in the receiving layer. In a modification the image-receiving layer and the silver halide emulsion layer are part of the same material. Thus, a paper support may be impregnated with the zinc compound and then coated with an unhardened silver halide emulsion layer. After development and treatment with a silver halide solvent or development with a developer containing a silver halide solvent, the emulsion is washed off. The entire operation may be carried out in the camera by rolling the exposed light-sensitive layer into contact with the receiving support with a bead of viscous developer in between, containing for example hydroquinone, sodium sulphite and a silver halide solvent such as ethanolamine. Specifications 614,155, 654,631 and 746,174 are referred to.
GB2339152A 1952-09-17 1952-09-17 Improvements in photographic reproduction processes Expired GB746946A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE522176D BE522176A (en) 1952-09-17
GB2339152A GB746946A (en) 1952-09-17 1952-09-17 Improvements in photographic reproduction processes
FR1082409D FR1082409A (en) 1952-09-17 1953-08-25 Improved method of obtaining photographic images by inversion and product for carrying out the method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2339152A GB746946A (en) 1952-09-17 1952-09-17 Improvements in photographic reproduction processes

Publications (1)

Publication Number Publication Date
GB746946A true GB746946A (en) 1956-03-21

Family

ID=10194858

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2339152A Expired GB746946A (en) 1952-09-17 1952-09-17 Improvements in photographic reproduction processes

Country Status (3)

Country Link
BE (1) BE522176A (en)
FR (1) FR1082409A (en)
GB (1) GB746946A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1310855C (en) * 1985-10-28 1992-12-01 Agfa-Gevaert Naamloze Vennootschap Method for fixing a photographic silver halide emulsion layer material
EP0290077B1 (en) * 1987-05-06 1995-07-05 Agfa-Gevaert N.V. A method for processing a photographic material

Also Published As

Publication number Publication date
FR1082409A (en) 1954-12-29
BE522176A (en)

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