GB329018A - Improvements in or relating to colour photography - Google Patents

Improvements in or relating to colour photography

Info

Publication number
GB329018A
GB329018A GB442529A GB442529A GB329018A GB 329018 A GB329018 A GB 329018A GB 442529 A GB442529 A GB 442529A GB 442529 A GB442529 A GB 442529A GB 329018 A GB329018 A GB 329018A
Authority
GB
United Kingdom
Prior art keywords
screen
dyes
colour
viewing
dye
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
GB442529A
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.)
FINLAY PHOTOGRAPHIC PROCESSES
Original Assignee
FINLAY PHOTOGRAPHIC PROCESSES
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 FINLAY PHOTOGRAPHIC PROCESSES filed Critical FINLAY PHOTOGRAPHIC PROCESSES
Priority to GB442529A priority Critical patent/GB329018A/en
Publication of GB329018A publication Critical patent/GB329018A/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
    • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/04—Additive processes using colour screens; Materials therefor; Preparing or processing such materials

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Abstract

329,018. Finlay, C. L., and Finlay Photographic Processes, Ltd. Feb. 9, 1929. Colour photography; multicolour screen processes.-To produce a combined viewing screen and a black and white positive, a three-colour viewing-screen is sensitized with a bichromated colloid layer, this layer is visually registered with a screen positive under subdued illumination, exposed, and then after soaking for a few minutes, is placed in a solution of a dye or dyes which will be absorbed by the colloid in inverse proportion to its exposure, the fully exposed parts rejecting the dye completely, to give a neutral black-andwhite image produced by a bichromated colloid process in registered association with its viewing- screen. The positive is then washed and dried. Nigrosine is instanced as a suitable dye. Other dyes which themselves do not give neutral black may be mixed with similar dyes of appropriate colour to produce the neutral black.
GB442529A 1929-02-09 1929-02-09 Improvements in or relating to colour photography Expired GB329018A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB442529A GB329018A (en) 1929-02-09 1929-02-09 Improvements in or relating to colour photography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB442529A GB329018A (en) 1929-02-09 1929-02-09 Improvements in or relating to colour photography

Publications (1)

Publication Number Publication Date
GB329018A true GB329018A (en) 1930-05-09

Family

ID=9776941

Family Applications (1)

Application Number Title Priority Date Filing Date
GB442529A Expired GB329018A (en) 1929-02-09 1929-02-09 Improvements in or relating to colour photography

Country Status (1)

Country Link
GB (1) GB329018A (en)

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