GB456818A - Improvements in or relating to colour photography - Google Patents

Improvements in or relating to colour photography

Info

Publication number
GB456818A
GB456818A GB14013/35A GB1401335A GB456818A GB 456818 A GB456818 A GB 456818A GB 14013/35 A GB14013/35 A GB 14013/35A GB 1401335 A GB1401335 A GB 1401335A GB 456818 A GB456818 A GB 456818A
Authority
GB
United Kingdom
Prior art keywords
screen
colour
screens
printing
produced
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
GB14013/35A
Inventor
Emil Heinrich Winter
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.)
EMIL HEINRICH WINTER
Original Assignee
EMIL HEINRICH WINTER
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 EMIL HEINRICH WINTER filed Critical EMIL HEINRICH WINTER
Publication of GB456818A publication Critical patent/GB456818A/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

Abstract

456,818. Colour photography. WINTER, E. H., 51, Muristrasse, Berne, Switzerland. May 13, 1935, No. 14013. Convention date, April 20. [Class 98 (ii)l In a process using printed multi-colour screens with regularly or irregularly distributed dots, an additional multicolour screen is placed in front of the photographic material, which has a multi-colour screen between the emulsion and the support, both in taking, contact-printing and enlarging, in such a manner that the two screens register. As shown in Fig. 3, a is the negative and associated multi-colour screen b is the additional multi-coloured screen, c is the positive emulsion, and d is the multi-colour screen between the emulsion and the paper support. As shown in Fig. 5, the contact-printing frame is provided with register pins f and holding screws g. The enlarging apparatus and the taking apparatus also have register pins. Films, papers and screens have corresponding holes. Plates are provided with pins, and those in the apparatus are dispensed with. One corner of plates, films, papers, and screens is cut off for orientation purposes. A multi-colour screen with a regular pattern is produced'by placing carbon paper on white paper, and running a pin-wheel thereover a number of times, producing a reduced photographic copy of the dot screen, and using this copy to produce four negatives, the copy being shifted for each negative. Photo-mechanical printing plates are produced from these negatives, and used for printing the four colours of the multi-colour screen. A celluloid foil is consecutively printed in black with the four printing plates, and a fifth photo-mechanical printing plate produced from this foil is used to print over the multi-colour screen in grey to cover the colourless spaces. A multicolour screen with an irregular pattern may be produced in a similar manner using celluloid foils sprayed with black oil colour. The multicolour screens may be on glass, oiled paper, celluloid, or mica foil.
GB14013/35A 1935-04-20 1935-05-13 Improvements in or relating to colour photography Expired GB456818A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE790535X 1935-04-20

Publications (1)

Publication Number Publication Date
GB456818A true GB456818A (en) 1936-11-13

Family

ID=6701427

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14013/35A Expired GB456818A (en) 1935-04-20 1935-05-13 Improvements in or relating to colour photography

Country Status (3)

Country Link
BE (1) BE415092A (en)
FR (1) FR790535A (en)
GB (1) GB456818A (en)

Also Published As

Publication number Publication date
FR790535A (en) 1935-11-22
BE415092A (en) 1936-05-30

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