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GB1078682A - Improvements in the formation of images - Google Patents

Improvements in the formation of images

Info

Publication number
GB1078682A
GB1078682A GB27237/64A GB2723764A GB1078682A GB 1078682 A GB1078682 A GB 1078682A GB 27237/64 A GB27237/64 A GB 27237/64A GB 2723764 A GB2723764 A GB 2723764A GB 1078682 A GB1078682 A GB 1078682A
Authority
GB
United Kingdom
Prior art keywords
layer
emulsion layer
iii
image
silver halide
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
GB27237/64A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and 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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB1078682A publication Critical patent/GB1078682A/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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • 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
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/46—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein having more than one photosensitive layer
    • 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
    • G03C5/50—Reversal development; Contact processes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

Images are formed by (i) exposing by application of pressure a photographic film having contiguous unfogged outer and inner silver halide emulsion layers, the grains of the inner emulsion layer being of the internal image type, so as to form a latent image in the outer emulsion layer, (ii) developing the outer layer to a silver image and (iii) treating the exposed material with an aqueous solution containing an image-producing agent e.g. a fogging agent for the inner emulsion layer, which diffuses selectively through the exposed areas of the exposed and developed outer emulsion layer to the inner emulsion layer, the exposure and sensitivity of the inner emulsion layer being such that after the exposure and development of the outer layer less than 1/10 of the available silver halide in the inner layer in areas corresponding to the exposed areas in the outer layer is developed. In the examples the image producing agent used in stage (iii) may be an aqueous solution containing (1) an anion which forms a silver salt less soluble in water than part at least of the silver halide in either of the emulsion layers e.g. KBr, K1 or Na2S (2) an antifoggant e.g. 2-mercapto-thiazoline, the lower layer being developed with a fogging agent e.g. thiourea (3) a fogging agent e.g. thiourea and 2-and 4-hydroxybenzylidene rhodanine. (4) anionic dyes which diffuse into and are mordanted by the inner emulsion layer. (5) 2-mercapto-4-phenylthiazole followed by treatment with a fixer. Any silver halide images formed may be toned. Steps (ii) and (iii) may be combined and the outer emulsion layer may be removed after stage (iii).
GB27237/64A 1963-07-01 1964-07-01 Improvements in the formation of images Expired GB1078682A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US292089A US3413122A (en) 1963-07-01 1963-07-01 Process for forming images and elements therefor

Publications (1)

Publication Number Publication Date
GB1078682A true GB1078682A (en) 1967-08-09

Family

ID=23123167

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27237/64A Expired GB1078682A (en) 1963-07-01 1964-07-01 Improvements in the formation of images

Country Status (4)

Country Link
US (1) US3413122A (en)
BE (1) BE649927A (en)
DE (1) DE1447778A1 (en)
GB (1) GB1078682A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2121554A (en) * 1982-06-09 1983-12-21 Fuji Photo Film Co Ltd Silver halide photographic light-sensitive material
EP0126644A3 (en) * 1983-05-20 1985-11-27 Konishiroku Photo Industry Co. Ltd. Light-sensitive silver halide photographic material for x-ray photography

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4047956A (en) * 1975-11-17 1977-09-13 E. I. Du Pont De Nemours And Company Low coating weight silver halide element and process

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2875052A (en) * 1949-08-06 1959-02-24 Weyde Edith Photographic material for the direct production of positive photographic images
BE531845A (en) * 1953-09-16
US3050391A (en) * 1957-12-30 1962-08-21 Gen Aniline & Film Corp Photographic film with fine grain silver chloride underlayer
US2996382A (en) * 1959-01-12 1961-08-15 Eastman Kodak Co Photographic elements having improved sensitivity
US3140179A (en) * 1959-10-22 1964-07-07 Eastman Kodak Co Photographic element having increased speed and contrast

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2121554A (en) * 1982-06-09 1983-12-21 Fuji Photo Film Co Ltd Silver halide photographic light-sensitive material
EP0126644A3 (en) * 1983-05-20 1985-11-27 Konishiroku Photo Industry Co. Ltd. Light-sensitive silver halide photographic material for x-ray photography

Also Published As

Publication number Publication date
BE649927A (en) 1964-12-30
US3413122A (en) 1968-11-26
DE1447778A1 (en) 1969-03-27

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