GB1240888A - Photographic material containing a dihydroxy azoniaanthracene - Google Patents

Photographic material containing a dihydroxy azoniaanthracene

Info

Publication number
GB1240888A
GB1240888A GB50831/68A GB5083168A GB1240888A GB 1240888 A GB1240888 A GB 1240888A GB 50831/68 A GB50831/68 A GB 50831/68A GB 5083168 A GB5083168 A GB 5083168A GB 1240888 A GB1240888 A GB 1240888A
Authority
GB
United Kingdom
Prior art keywords
formula
salt
image
diffusion transfer
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
GB50831/68A
Inventor
Paul Harold Stewart
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 GB1240888A publication Critical patent/GB1240888A/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
    • G03C5/29—Development processes or agents therefor
    • G03C5/30—Developers
    • G03C5/3021—Developers with oxydisable hydroxyl or amine groups linked to an aromatic ring
    • 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
    • G03C8/08—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of organic compounds
    • G03C8/10—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of organic compounds of dyes or their precursors
    • G03C8/12—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of organic compounds of dyes or their precursors characterised by the releasing mechanism
    • G03C8/14—Oxidation of the chromogenic substances
    • G03C8/16—Oxidation of the chromogenic substances initially diffusible in alkaline environment
    • G03C8/18—Dye developers

Landscapes

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

Abstract

1,240,888. Photographic dye diffusion transfer material. EASTMAN KODAK CO. Oct. 25, 1968 [Oct.30, 1967], No. 50831/68. Heading G2C. A photographic dye diffusion transfer material comprises a support and a light-sensitive silver halide emulsion layer and in the emulsion layer or in a layer contiguous thereto a salt of the formula I: - or of the formula II:- wherein each R is H, an alkyl radical, or an aryl radical and X<SP>-</SP> is an anion which has little or no deleterious action on the photographic material being processed. Examples include 5, 8-dihydroxy- 4a-azoniaanthracene bromide and 5, 6-dihydroxy- 4a-azoniaanthracene bromide. The material may comprise an integral dye diffusion transfer receiving layer next to the support, which material may have a stripping layer above and next to the receiving layer. The material may contain an overcoat layer lying over the silver halide emulsion layer and which contains a colourless, water-insoluble hydroquinone derivative as an auxiliary silver halide developing agent. A light brown positive image may be obtained by exposing the dye-developer material containing a salt of formula I or II to a light image, causing an alkaline liquid which is free of sulphite ions and which causes said salt to develop the latent image to permeate the layers of the material and allowing the residual salt to diffuse in register to a receiving layer therefor. A blue negative image may be obtained by exposing to a light image a dye diffusion transfer material containing a compound of the formula I, causing an alkaline liquid containing sulphite ions and which causes said salt of the formula I to develop the latent image to permeate the layers of the material and allowing development products of said salt of the formula I to diffuse in register to a receiving layer therefor. A brown positive image may be obtained by exposing to a light image a dye diffusion transfer material containing a dye-developer of the formula II, causing an alkeline liquid which contains sulphite ions and which causes said salt of the formula II to develop the latent image to permeate the layers of the material and allowing the residual salt to diffuse in register to a receiving layer therefor. The preferred alkaline liquid is an aqueous solution comprising dissolved sodium metaborate which may be added as the octahydrate. The alkaline liquid may also contain ascorbic acid as an auxiliary silver halide developing agent.
GB50831/68A 1967-10-30 1968-10-25 Photographic material containing a dihydroxy azoniaanthracene Expired GB1240888A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67918667A 1967-10-30 1967-10-30

Publications (1)

Publication Number Publication Date
GB1240888A true GB1240888A (en) 1971-07-28

Family

ID=24725906

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50831/68A Expired GB1240888A (en) 1967-10-30 1968-10-25 Photographic material containing a dihydroxy azoniaanthracene

Country Status (4)

Country Link
US (1) US3535114A (en)
BE (1) BE723049A (en)
FR (1) FR1590324A (en)
GB (1) GB1240888A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1573134A (en) * 1976-06-02 1980-08-13 Gaf Corp Dyedeveloper diffusion transfer photographic element, process for its production, process of development of the element and composition

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3375253A (en) * 1964-05-20 1968-03-26 Eastman Kodak Co Azonia salts

Also Published As

Publication number Publication date
BE723049A (en) 1969-04-28
US3535114A (en) 1970-10-20
FR1590324A (en) 1970-04-13

Similar Documents

Publication Publication Date Title
GB1019222A (en) Improvements in or relating to silver halide photographic materials
GB1342522A (en) Photosensitive heat-processable photographic materials
GB1311884A (en) Light-sensitive silver halide photographic materials incorporating
GB1198150A (en) Photographic Dye Developer Process
GB1324284A (en) Light-sensitive heat-developable photographic material
GB1446227A (en) Photographic silver halide materials and processes
GB926646A (en) Improvements in photographic half-tone reproduction
GB1131238A (en) Radiation sensitive silver-dye compounds
GB1387713A (en) Method of processing silver halide photographic materials
US3740221A (en) Development of photographic material
GB1240888A (en) Photographic material containing a dihydroxy azoniaanthracene
US3617277A (en) Dye developer diffusion transfer systems
GB1458764A (en) Photographic emulsions
GB1408376A (en) Method of processing silver halide photographic light-sensitive material
GB1222282A (en) Photographic material for the dye-developer transfer process
GB1016369A (en) Processing colour film
GB1142135A (en) Method of developing photosensitive emulsions and developer compositions for use therein
GB1446226A (en) Photographic silver halide materials and processes
GB1390960A (en) Process for obtaining a high contrast photographic image
GB1249277A (en) Stabilisation of developed photographic silver images
GB1146719A (en) Improvements in or relating to photographic emulsions
GB1192797A (en) Removable Antihalation Layers for Photographic Film
GB1138087A (en) Improvements relating to photographic processes and films
GB1287547A (en) Method of processing photographic silver halide material
GB1220474A (en) Photographic colour transfer materials and process