GB191415648A - Improvements in and relating to the Process of Producing Kinematograph Films in Natural Colours. - Google Patents
Improvements in and relating to the Process of Producing Kinematograph Films in Natural Colours.Info
- Publication number
- GB191415648A GB191415648A GB191415648DA GB191415648A GB 191415648 A GB191415648 A GB 191415648A GB 191415648D A GB191415648D A GB 191415648DA GB 191415648 A GB191415648 A GB 191415648A
- Authority
- GB
- United Kingdom
- Prior art keywords
- colour
- negative
- gelatine
- film
- 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
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
- G03C7/22—Subtractive cinematographic processes; Materials therefor; Preparing or processing such materials
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
Abstract
15,648. Cox, S. J. June 30. Colour photography.-A process is described, more particularly applicable for kinematograph films, in which two colour images are first produced in the original gelatine coating of the support, one of these being a blue print, and the other produced by resensitizing the same gelatine layer and exposing a second colour negative. For a three-colour film, the third colour is obtained by recoating the film and printing from the third colour negative. The positive may be printed from three separate colour negatives, or from a single negative having recurring series of colour negatives. The blue print may be obtained by toning a bromide print, and in developing and toning the print, materials should be avoided which tend to harden the gelatine. Thus amidol or ferrous oxalate could be used for developing, and as weak a solution of ferricyanide as is possible in the toning process. After the blue image is formed, the gelatine is resensitized with a bichromate solution and printed from a positive of the red-printing negative. The chromate salt is removed by washing and, if necessary, by an acid sulphite of potassium bath, and the film immersed in, say, pinatype red, an excess of ammonia being avoided. For a third colour, this two-colour picture film is recoated with a bichromated colloid and printed from a positive of the third colour printing negative. Where albumen is used as a colloid, it is desirable to coagulate the albumen stratum when dry by the application of dilute alcohol.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB191415648T | 1914-06-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB191415648A true GB191415648A (en) | 1915-08-30 |
Family
ID=32585265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB191415648D Expired GB191415648A (en) | 1914-06-30 | 1914-06-30 | Improvements in and relating to the Process of Producing Kinematograph Films in Natural Colours. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB191415648A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106370775A (en) * | 2016-08-26 | 2017-02-01 | 中国地质科学院矿产综合利用研究所 | Acid dissolution-titration method for detecting iron element in battery-grade ferrous oxalate product |
EA037545B1 (en) * | 2016-12-23 | 2021-04-12 | Колком Груп С.П.А. | Hinge for the rotatable movement of a door or similar closing element |
US11905749B2 (en) * | 2016-12-23 | 2024-02-20 | Colcom Group S.P.A. | Hinge for the rotatable movement of a door or similar closing element |
-
1914
- 1914-06-30 GB GB191415648D patent/GB191415648A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106370775A (en) * | 2016-08-26 | 2017-02-01 | 中国地质科学院矿产综合利用研究所 | Acid dissolution-titration method for detecting iron element in battery-grade ferrous oxalate product |
CN106370775B (en) * | 2016-08-26 | 2018-08-24 | 中国地质科学院矿产综合利用研究所 | Acid dissolution-titration method for detecting iron element in battery-grade ferrous oxalate product |
EA037545B1 (en) * | 2016-12-23 | 2021-04-12 | Колком Груп С.П.А. | Hinge for the rotatable movement of a door or similar closing element |
US11905749B2 (en) * | 2016-12-23 | 2024-02-20 | Colcom Group S.P.A. | Hinge for the rotatable movement of a door or similar closing element |
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