GB706333A - Improvements in or relating to the production of photographic images by a migratory reversal transfer process - Google Patents

Improvements in or relating to the production of photographic images by a migratory reversal transfer process

Info

Publication number
GB706333A
GB706333A GB258851A GB258851A GB706333A GB 706333 A GB706333 A GB 706333A GB 258851 A GB258851 A GB 258851A GB 258851 A GB258851 A GB 258851A GB 706333 A GB706333 A GB 706333A
Authority
GB
United Kingdom
Prior art keywords
layer
silver chloride
receptive
benztriazole
positive
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
GB258851A
Inventor
Henry Phillips
Frank Russell Tolhurst
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
Priority to GB258851A priority Critical patent/GB706333A/en
Publication of GB706333A publication Critical patent/GB706333A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C8/00Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
    • G03C8/24Photosensitive materials characterised by the image-receiving section
    • G03C8/243Toners for the silver image

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)

Abstract

706,333. Photographic positive production by migratory transfer. ILFORD, Ltd. Jan. 29, 1952 [Feb. 2, 1951], No. 2588/51. Class 98(2) A latent image is formed in a light-sensitive silver chloride material and developed in presence of a silver chloride solvent and benztriazole or a derivative thereof containing one or more alkyl, aryl, aralkyl, amino, halogen, substituted amino; nitro or alkoxy substituents or doubly linked benz groups in the benzene ring, while the material is in contact with a receptive colloid layer carried on a support. A black or blackish blue positive image is thereby obtained in the receptive layer as compared with a brownish image obtained without use of the triazole compound. Benztriazole or its derivative may be present in the developer or the receptive layer or both. The silver chloride layer and the receptive layer may be on separate supports, squeezed together and peeled apart after development, or a single support may carry both layers with removal of the silver chloride layer by hot water washing when unhardened gelatin is used as binder, or removal by stripping if an intermediate stripping layer is present, to leave the visible positive image. The receptive layer may contain all the development substances, thus in the example it is constituted by a paper support coated with a composition comprising gelatin, benztriazole, colloidal lead selenide, hydroquinone, sodium sulphite and thiosulphate, and this is soaked in a solution containing sodium carbonate and sodium sulphite, contacted with an exposed silver chloride printing paper for two minutes and then separated to provide a negative record in the printing paper and a positive in the receptive'layer. 5- or 6-chlorobenztriazole may be used in smaller quantity.than benztriazole to produce the same result. Specifications 614,155, 654,630, 654,631 and 684,641 are referred to.
GB258851A 1951-02-02 1951-02-02 Improvements in or relating to the production of photographic images by a migratory reversal transfer process Expired GB706333A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB258851A GB706333A (en) 1951-02-02 1951-02-02 Improvements in or relating to the production of photographic images by a migratory reversal transfer process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB258851A GB706333A (en) 1951-02-02 1951-02-02 Improvements in or relating to the production of photographic images by a migratory reversal transfer process

Publications (1)

Publication Number Publication Date
GB706333A true GB706333A (en) 1954-03-31

Family

ID=9742209

Family Applications (1)

Application Number Title Priority Date Filing Date
GB258851A Expired GB706333A (en) 1951-02-02 1951-02-02 Improvements in or relating to the production of photographic images by a migratory reversal transfer process

Country Status (1)

Country Link
GB (1) GB706333A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3067033A (en) * 1959-01-08 1962-12-04 Agfa Ag Production of transfer images by the silver salt diffusion process
US3203796A (en) * 1962-04-27 1965-08-31 Gevaert Photo Prod Nv Use of starch ether layers in diffusion transfer processes
US3345166A (en) * 1961-03-09 1967-10-03 Polaroid Corp Photographic process whereby a fully developed and fixed negative is formed concurrently with a positive silver transfer image

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3067033A (en) * 1959-01-08 1962-12-04 Agfa Ag Production of transfer images by the silver salt diffusion process
US3345166A (en) * 1961-03-09 1967-10-03 Polaroid Corp Photographic process whereby a fully developed and fixed negative is formed concurrently with a positive silver transfer image
US3203796A (en) * 1962-04-27 1965-08-31 Gevaert Photo Prod Nv Use of starch ether layers in diffusion transfer processes

Similar Documents

Publication Publication Date Title
US2352014A (en) Photomechanical printing process and printing material for carrying out the same
US2971840A (en) Process for the production of nonlaterally reversed positive copies by heat development
GB821506A (en) The production of positive photographic images by heat development
GB1038337A (en) Improvements in light-sensitive photothermographic materials
GB687751A (en) Process and material for the direct production of positive photographic images
GB706333A (en) Improvements in or relating to the production of photographic images by a migratory reversal transfer process
US2750292A (en) Process for producing colored photographic contrasts
GB540760A (en) Improvements in and relating to colour couplers for photographic colour development
GB705565A (en) Light sensitive diazo type layers
GB790811A (en) Process for the production of laterally non-reversed positive copies by heat development
GB721071A (en) Improved photographic materials for use in the preparation of gauze-type printing screens
GB813254A (en) Improvements in photographic reproduction processes and sensitive materials therefor
US3079858A (en) Process for the production of printing forms
GB777281A (en) Improvements in or relating to photosensitive material and process of making same
GB746948A (en) Improvements in photographic reproduction processes and in materials therefor
GB925313A (en) Production of transfer images by the silver salt diffusion process and sensitive material therefor
GB753189A (en) Process and photographic material for the direct production of positive photographic images
US2193574A (en) Process for the production of colored images by photography
GB724001A (en) Photographic light sensitive silver halide emulsions and process using the same
GB668642A (en) Improvements in colour photographic processes and materials
GB746946A (en) Improvements in photographic reproduction processes
GB701551A (en) Colour photography
GB705842A (en) Photosensitive material
US1830854A (en) Light-sensitive material and process for the production of photographic prints
GB536831A (en) Improvements in drawing materials, methods of utilizing the same and a process for preparing them