GB333933A - Improvements in colour photography - Google Patents

Improvements in colour photography

Info

Publication number
GB333933A
GB333933A GB1593429A GB1593429A GB333933A GB 333933 A GB333933 A GB 333933A GB 1593429 A GB1593429 A GB 1593429A GB 1593429 A GB1593429 A GB 1593429A GB 333933 A GB333933 A GB 333933A
Authority
GB
United Kingdom
Prior art keywords
coloured
emulsion
films
plates
colour photography
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
GB1593429A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1593429A priority Critical patent/GB333933A/en
Publication of GB333933A publication Critical patent/GB333933A/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
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/825—Photosensitive materials characterised by the base or auxiliary layers characterised by antireflection means or visible-light filtering means, e.g. antihalation
    • G03C1/83—Organic dyestuffs therefor
    • G03C1/831—Azo dyes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)

Abstract

333,933. Kelly, W. van D. May 23, 1929. Drawings to Specification. Plates and films.-The surface of an emulsion is coloured with colouring matter comprising a combination of benzidine and its homologues with the sulphonic acids of naphthol or naphthylamine, e.g. Congo red, benzo purpurine or other " direct " dyes. The dye has a strong tendency to remain on the surface of the emulsion, is not affected by the developing agents, but may be removed by sodium hydrosulphite. Emulsions surface-coloured as above are particularly useful in colour photography when exposing two plates or films with their sensitive surfaces in contact.
GB1593429A 1929-05-23 1929-05-23 Improvements in colour photography Expired GB333933A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1593429A GB333933A (en) 1929-05-23 1929-05-23 Improvements in colour photography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1593429A GB333933A (en) 1929-05-23 1929-05-23 Improvements in colour photography

Publications (1)

Publication Number Publication Date
GB333933A true GB333933A (en) 1930-08-25

Family

ID=10068165

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1593429A Expired GB333933A (en) 1929-05-23 1929-05-23 Improvements in colour photography

Country Status (1)

Country Link
GB (1) GB333933A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2632701A (en) * 1949-05-04 1953-03-24 Eastman Kodak Co Ultraviolet filter on photographic layers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2632701A (en) * 1949-05-04 1953-03-24 Eastman Kodak Co Ultraviolet filter on photographic layers

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