US2561299A - Color cinematography - Google Patents
Color cinematography Download PDFInfo
- Publication number
- US2561299A US2561299A US652810A US65281046A US2561299A US 2561299 A US2561299 A US 2561299A US 652810 A US652810 A US 652810A US 65281046 A US65281046 A US 65281046A US 2561299 A US2561299 A US 2561299A
- Authority
- US
- United States
- Prior art keywords
- colour
- layer
- red
- blue
- images
- 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 - Lifetime
Links
Images
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
Definitions
- My invention concerns .a new process for ma-. terially simplifying colour motion picture proce-. dure, from the making of the required colour separation negatives to the printing of the positives, and, in accordancevwith the invention. I combine the best'features of the additive and sub.':-.-
- the invention may be said toconsist in a process -f0.r the production of; colour motion pictures. wherein different frames of a negative-film comprising two superimposed layers of emulsion areexposed throughdifferent colour filters in such manner as to effect a three-; colour analysis the two seriesof negative images are developed, difierentially coloured and printed simultaneously on to two differently sensitised layers of. emulsion .comprised ina positive film,
- the .process I may employ .a two-layer monopackor bipack film consisting .of an. orthochromatic and a panchromatic emulsion.
- the integralmonopack. negative is formed by, disposing. on. to the ,celluloid. .carrier a. yellow dyed orthochromaticl emulsion. containing, a. dye, forming; substance of suitable. ,type andcha act'er, as. .for. instance .p-nitrophenylacetonitrile',
- red-filter a suitable minus green and blue dye, known to the art as a red-filter.
- This red-filter dye may be employed in a solution with gelatine or other suitable transparent material.
- red sensitive emulsion containing a dye forming substance of a suitable type and character, as for instance acetoacet 2,5 dichloroanilide.
- the required slight variation of the silver deposit in one frame and layer from that in the next frame and layer to obtain the additive effect desired may be achieved by passing the film through a suitable machine which sprays, wipes, coats or otherwise deposits upon the Celluloid carrier a thin layer of suitable minus'blue filterdyes upon the odd frames of the film.
- suitable minus'blue filterdyes are tartrazine, rapid filter yellow.
- a deposit of minus green filter-dye such as Rose bengal, rhodamine, is applied.
- monopack negatives formed in the above described manner must be exposed through the carrier, but by reversing the order and disposition of the two layers so that the emulsion containin the red sensitizer is nearest to the carrier and the blue-green emulsion furthest away from the carrier, exposure may be made in the usual manner with the emulsion facing the lens.
- the negative After exposure, the negative is developed in any suitable normal black and white developer and is then fixed and thoroughly Washed. Thereafter the negative is bleached in a suitable bleach for dye coupling by redevelopment.
- a suitable bleach for dye coupling may be a mixture of one ounce (300 grams) of potassium ferricyanide, half an ounce (15.0 grams) of potassium bromide, and tap water to make 32 ounces (1 litre) of solution.
- the negative is bleached completely in this solution, then washed thoroughly and re-developed in a suitable coupling developer which may be composed as follows:
- the choice of the dye forming substance may be varied to obtain any suitable combination of colours for each of the two layers of images representing the blue-green and red colour records respectively.
- the two layers may be converted into colour by dye-mordanting, chemical toning or any other suitable process of which many are known to the art.
- the primary purpose of converting the two series of images, incorporated in the two layers of emulsion of the negative, is to reduce the 4 printing of the positive into a single operation and thus to assure perfect registration of the two images and, therefore, to materially shorten the time of production.
- My preferred method for making up of the required positive film is the following:
- a layer of orthochromatic emulsion containing an orange-red dye forming substance such as' for instance a' suitable combination of o chloroacetoacetanilide and p nitrophenylacetonitrile in the proportion of one-third and two-thirds respectively, is disposed upon the Celluloid carrier.
- a yellow dyed blue sensitive emulsion containing a blue-green dye forming substance such as for instance 2,4 dichloro-l-naphtol is coated over the lower layer of the positive film.
- the negative film described hereinbefore is then printed in the usual black and white fashion by contact or optically, on to this special positive film after which the positive film receives substantially the same processing as that specified for the negative film.
- the blue-green colour record of the negative will contain differential silver deposits in alternate frames of the positive and, in the other layer of the positive the red colour record printed from the negative will have a uniform deposit in all frames.
- a process for the production of colour motion pictures which give the effect of a threecolour analysis by means of a combination of additive and subtractive principles, said process comprising producing in a first layer of a twolayer negative film having a first light-sensitive emulsion layer of at least red sensitivity and a second light-sensitive emulsion layer of only orthochromatic sensitivity a series a consecutive frames each recording uniform density images only of red colour values of a photographed subject, producing in said orthochromatic emulsion second layer of said two layer negative film a first series of alternate frames recording images from said subject only of blue-green colour values of minus blue density and a second series of frames alternating with said first series recording images from said subject only of bluegreen colour values of minus green density, converting the images in the frames of the series of the first layer to greenish-yellow, converting the images in both series of the second layer to magenta, printing in a single operation by means of exposure through both layers of the thus coloured two-layer negative film both layers of a two-layer positive film having an
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB271385X | 1945-07-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2561299A true US2561299A (en) | 1951-07-17 |
Family
ID=10254836
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US652810A Expired - Lifetime US2561299A (en) | 1945-07-23 | 1946-03-07 | Color cinematography |
Country Status (5)
Country | Link |
---|---|
US (1) | US2561299A (fr) |
BE (1) | BE466319A (fr) |
CH (1) | CH271385A (fr) |
DE (1) | DE824886C (fr) |
FR (1) | FR929724A (fr) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1278162A (en) * | 1917-02-08 | 1918-09-10 | Prizma Inc | Subtractive and additive color photography. |
US1954452A (en) * | 1930-03-19 | 1934-04-10 | Leopold D Mannes | Method of making color photographs |
US1966653A (en) * | 1931-03-03 | 1934-07-17 | Thornton John Edward | Color cinematography and other photography and means, method, and apparatus therefor |
US1969469A (en) * | 1932-07-30 | 1934-08-07 | Leopold D Mannes | Photographic color process |
US2001250A (en) * | 1931-04-15 | 1935-05-14 | Agfa Ansco Corp | Process of producing cinematographic three- and multi-color pictures |
US2059884A (en) * | 1932-09-21 | 1936-11-03 | Eastman Kodak Co | Color photography |
-
0
- BE BE466319D patent/BE466319A/xx unknown
-
1946
- 1946-03-07 US US652810A patent/US2561299A/en not_active Expired - Lifetime
- 1946-06-25 FR FR929724D patent/FR929724A/fr not_active Expired
- 1946-07-17 CH CH271385D patent/CH271385A/fr unknown
-
1950
- 1950-01-28 DE DEF691A patent/DE824886C/de not_active Expired
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1278162A (en) * | 1917-02-08 | 1918-09-10 | Prizma Inc | Subtractive and additive color photography. |
US1954452A (en) * | 1930-03-19 | 1934-04-10 | Leopold D Mannes | Method of making color photographs |
US1966653A (en) * | 1931-03-03 | 1934-07-17 | Thornton John Edward | Color cinematography and other photography and means, method, and apparatus therefor |
US2001250A (en) * | 1931-04-15 | 1935-05-14 | Agfa Ansco Corp | Process of producing cinematographic three- and multi-color pictures |
US1969469A (en) * | 1932-07-30 | 1934-08-07 | Leopold D Mannes | Photographic color process |
US2059884A (en) * | 1932-09-21 | 1936-11-03 | Eastman Kodak Co | Color photography |
Also Published As
Publication number | Publication date |
---|---|
DE824886C (de) | 1951-12-13 |
BE466319A (fr) | |
FR929724A (fr) | 1948-01-06 |
CH271385A (fr) | 1950-10-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2673800A (en) | Photographic material for the manufacture of color images | |
US2763550A (en) | Silver sound track on multilayer color films | |
US2230590A (en) | Color photographic process | |
GB626727A (en) | Improvements in or relating to the recording of sound tracks in colour film | |
US2310227A (en) | Material for the production of multicolor photographs | |
US3035913A (en) | Photographic tone correction | |
US2694008A (en) | Process for the production of colored masks in photographic color material | |
GB581772A (en) | Improvements in photographic processes | |
US2647833A (en) | Color photographic film and process | |
US2561299A (en) | Color cinematography | |
US2231685A (en) | Photographic color process and film for use therein | |
US2320418A (en) | Color photographs | |
US2347119A (en) | Process for producing photographic multicolor pictures | |
US2197994A (en) | Color photography | |
US2224329A (en) | Color photography | |
US2391198A (en) | Sensitive interlayers in multilayer film | |
US3251689A (en) | Masking film | |
US3034890A (en) | Color formation | |
US2396726A (en) | Process for producing color prints and products | |
US1980941A (en) | Color photography | |
US2316294A (en) | Process for obtaining individual color-component records from multilayer differentially colorsensitized film elements | |
US2226339A (en) | Three-color film and method of making same | |
US2659671A (en) | Color photographic element | |
US1997493A (en) | Color photography | |
US2016666A (en) | Colored photograph and method of making same |