GB380778A - Improvements in and relating to the production of separation negatives for colourprinting from photographic regularpattern colourscreen negatives - Google Patents

Improvements in and relating to the production of separation negatives for colourprinting from photographic regularpattern colourscreen negatives

Info

Publication number
GB380778A
GB380778A GB1486031A GB1486031A GB380778A GB 380778 A GB380778 A GB 380778A GB 1486031 A GB1486031 A GB 1486031A GB 1486031 A GB1486031 A GB 1486031A GB 380778 A GB380778 A GB 380778A
Authority
GB
United Kingdom
Prior art keywords
negatives
negative
stop
sensitized
bichromate
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
GB1486031A
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.)
FREDERICK BECKERT
WILLIAM DE LAVEDRE LAUDER
Original Assignee
FREDERICK BECKERT
WILLIAM DE LAVEDRE LAUDER
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 FREDERICK BECKERT, WILLIAM DE LAVEDRE LAUDER filed Critical FREDERICK BECKERT
Priority to GB1486031A priority Critical patent/GB380778A/en
Publication of GB380778A publication Critical patent/GB380778A/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
    • G03C7/00Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/04Additive processes using colour screens; Materials therefor; Preparing or processing such materials

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Printing Methods (AREA)

Abstract

380,778. Colour photography. LAUDER, W. DE L. and BECKERT; F., 160, New Bond Street, London. May 20, 1931, No. 14860. [Class 98 (ii).] Separate colour record printing negatives are prepared from a master colour screen negative by the use of a very thin stop-out screen. In one method, the master negative is soaked in a 1/1 glycerine-water solution and is brought into contact and alignment with a stop-out screen made on a very thin celluloid or other flexible film ; an emulsion plate, sensitized with bichromate, is exposed behind the film. According to a second method, the stop-out screen pattern is printed upon a plate sensitized with a 2 per cent solution of potassium bichromate, which is washed, developed, re-washed and re-sensitized with a 4 per cent bichromate solution ; after drying, the plate is registered with the master negative and again exposed. In a third method, the stop-out screen is printed in register on the master negative in greasy ink and a plate sensitized with 3-4 per cent bichromate exposed thereunder to obtain a colour record negative. The ink screen is then removed and the process repeated for the other colour record negatives.
GB1486031A 1931-05-20 1931-05-20 Improvements in and relating to the production of separation negatives for colourprinting from photographic regularpattern colourscreen negatives Expired GB380778A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1486031A GB380778A (en) 1931-05-20 1931-05-20 Improvements in and relating to the production of separation negatives for colourprinting from photographic regularpattern colourscreen negatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1486031A GB380778A (en) 1931-05-20 1931-05-20 Improvements in and relating to the production of separation negatives for colourprinting from photographic regularpattern colourscreen negatives

Publications (1)

Publication Number Publication Date
GB380778A true GB380778A (en) 1932-09-20

Family

ID=10048772

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1486031A Expired GB380778A (en) 1931-05-20 1931-05-20 Improvements in and relating to the production of separation negatives for colourprinting from photographic regularpattern colourscreen negatives

Country Status (1)

Country Link
GB (1) GB380778A (en)

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