US2635959A - Process of producing multilayer color negatives containing masking images for color correction purposes - Google Patents
Process of producing multilayer color negatives containing masking images for color correction purposes Download PDFInfo
- Publication number
- US2635959A US2635959A US703480A US70348046A US2635959A US 2635959 A US2635959 A US 2635959A US 703480 A US703480 A US 703480A US 70348046 A US70348046 A US 70348046A US 2635959 A US2635959 A US 2635959A
- Authority
- US
- United States
- Prior art keywords
- silver
- color
- layers
- layer
- green
- 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
- 238000012937 correction Methods 0.000 title claims description 11
- 230000000873 masking effect Effects 0.000 title description 14
- 238000000034 method Methods 0.000 title description 14
- 230000008569 process Effects 0.000 title description 3
- 229910052709 silver Inorganic materials 0.000 claims description 61
- 239000004332 silver Substances 0.000 claims description 61
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 39
- -1 SILVER HALIDE Chemical class 0.000 claims description 35
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 claims description 27
- 229910021607 Silver chloride Inorganic materials 0.000 claims description 26
- 238000011161 development Methods 0.000 claims description 26
- 239000000839 emulsion Substances 0.000 claims description 10
- 238000004061 bleaching Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000007639 printing Methods 0.000 claims description 7
- 230000000295 complement effect Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000006872 improvement Effects 0.000 claims description 6
- 238000001228 spectrum Methods 0.000 claims description 6
- 229940009188 silver Drugs 0.000 description 55
- 239000000975 dye Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 239000007864 aqueous solution Substances 0.000 description 12
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 10
- 239000000243 solution Substances 0.000 description 9
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 8
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 8
- 230000035945 sensitivity Effects 0.000 description 8
- JKFYKCYQEWQPTM-UHFFFAOYSA-N 2-azaniumyl-2-(4-fluorophenyl)acetate Chemical compound OC(=O)C(N)C1=CC=C(F)C=C1 JKFYKCYQEWQPTM-UHFFFAOYSA-N 0.000 description 7
- 229910021612 Silver iodide Inorganic materials 0.000 description 7
- 239000003513 alkali Substances 0.000 description 7
- 229940045105 silver iodide Drugs 0.000 description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 6
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 6
- 239000007844 bleaching agent Substances 0.000 description 6
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 6
- 235000010265 sodium sulphite Nutrition 0.000 description 6
- 229940099408 Oxidizing agent Drugs 0.000 description 5
- 230000009471 action Effects 0.000 description 5
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000007800 oxidant agent Substances 0.000 description 5
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Inorganic materials [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 5
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 description 5
- 239000011780 sodium chloride Substances 0.000 description 5
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 4
- 235000019270 ammonium chloride Nutrition 0.000 description 4
- 235000011187 glycerol Nutrition 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 3
- 150000001298 alcohols Chemical class 0.000 description 3
- 238000003287 bathing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 description 3
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 description 3
- 235000011152 sodium sulphate Nutrition 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000010186 staining Methods 0.000 description 3
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 150000004820 halides Chemical class 0.000 description 2
- AJDUTMFFZHIJEM-UHFFFAOYSA-N n-(9,10-dioxoanthracen-1-yl)-4-[4-[[4-[4-[(9,10-dioxoanthracen-1-yl)carbamoyl]phenyl]phenyl]diazenyl]phenyl]benzamide Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2NC(=O)C(C=C1)=CC=C1C(C=C1)=CC=C1N=NC(C=C1)=CC=C1C(C=C1)=CC=C1C(=O)NC1=CC=CC2=C1C(=O)C1=CC=CC=C1C2=O AJDUTMFFZHIJEM-UHFFFAOYSA-N 0.000 description 2
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 description 2
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 2
- 239000001043 yellow dye Substances 0.000 description 2
- GUUUPLGXSAZRQX-UHFFFAOYSA-N 1-ethyl-1-(2-ethylphenyl)hydrazine Chemical compound CCN(N)C1=CC=CC=C1CC GUUUPLGXSAZRQX-UHFFFAOYSA-N 0.000 description 1
- XBTWVJKPQPQTDW-UHFFFAOYSA-N 4-n,4-n-diethyl-2-methylbenzene-1,4-diamine Chemical compound CCN(CC)C1=CC=C(N)C(C)=C1 XBTWVJKPQPQTDW-UHFFFAOYSA-N 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Diammonium sulfite Chemical compound [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 1
- WTDHULULXKLSOZ-UHFFFAOYSA-N Hydroxylamine hydrochloride Chemical compound Cl.ON WTDHULULXKLSOZ-UHFFFAOYSA-N 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052946 acanthite Inorganic materials 0.000 description 1
- 229940044197 ammonium sulfate Drugs 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010017 direct printing Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 235000019252 potassium sulphite Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000001235 sensitizing effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000003378 silver Chemical class 0.000 description 1
- 229940056910 silver sulfide Drugs 0.000 description 1
- XUARKZBEFFVFRG-UHFFFAOYSA-N silver sulfide Chemical compound [S-2].[Ag+].[Ag+] XUARKZBEFFVFRG-UHFFFAOYSA-N 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 235000009518 sodium iodide Nutrition 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
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
- G03C7/18—Processes for the correction of the colour image in subtractive colour photography
Definitions
- This invention relates to color photography, and more particularly to a process of producing multilayer color negatives containing masking images for color correction purposes.
- the color negative In the production of color prints from multilayer color negatives, the color negative consists of yellow, magenta, and cyan images in the different layers.
- the cyan image represents the red, the magenta image the green, and the yellow image the blue record of the original subject.
- Color positive prints or transparencies may be obtained from such color negatives by direct printing onto a multi-layer color positive film or paper, or by making color separation negatives which are used for making the color positive prints. These color negatives do not as a rule, completely satisfy the spectral requirements for trichromatic color reproduction.
- the magenta colored image formed by the imposition of green light upon the green sensitive layer, records the green densities. This image should transmit the blue and the red primaries, completely.
- a further object is to provide a method for ob- I taining color corrected color negati-vema-teri'als wherein the color correction is integrally bound with the dye images,
- Thesilver chloride thus formed is'then removed by bathing the bleached film in a saturated aqueous solution of ammonium, potassium, or sodium sulfite, ammonium chloride, ammonia or other'inorganic agent that difierentially removes silver chloride from a mixture of silver-halides.
- the processing of the film up to this point must be efiectuated in complete darkness, after which a yellow safelight may be employed.
- the silver-halide remaining in the film has considerable sensitivity to blue light, though practically none to green or red light.
- the silver-halides within the magenta and cyan layers becomedevelopable by means of a black andwhitedeveloper into masking silver images whose gradation is controlled by the degree of final development given,
- the overall density of the masking images is controlled by the length of the-exposure given the film,-j-ust prior todevelopment, which must, of course, be carried out in darkness-though yellow safelight illumination is permitted.
- the film can be bathed with a 1% aqueous solution of potassium or sodium iodide.
- This solution converts the residual silver-halides in the green and red sensitive layers into silver iodide, which will act as a mask.
- the iodide bath may be replaced by a sulfide bath of the type used to formsilver sulfide images,such as a 1% solution of sodium sulfide.
- a bleach bath such as:
- Potassium ferricyanide ;'grams 40 Sodium bromide e do Water to make liter 1 will convert the silver to silver bromide without affecting either silver iodide or silver sulfide to any appreciable extent.
- Example I A multi-layer photographic color film such as prepared according to United States Patents 2,179,228; 2,179,239; 2,186,849; 2,220,187; and 2,357,388, was exposed to a colored object and then developed for 15 minutes in a color developer of the following composition:
- Potassium ferricyanide grams 50 Sodium chloride -d'o- 50 Water to make liter 1 Thableached. film was washed in running wator for 5 minutes and the silver chloride formed in. the bleaching bath was removed by bathing in a. concentrated solution of sodium sulfite. The concentration normally required may vary from to saturation. Thepreferred concentration ofthesodiumsulfite, however,,is
- the film contained a dyedmage in each of the 3, emulsion layers.
- the silverhalide images in the latter layers cannot be developedunlessexposed to. light prior to. development.
- the treated. film was washed in running water for several minutes and exposed to the light of a 500 watt lamp at adistance of 5. feet,.for, a, pcriodof 1 minutes
- the exposed film was developed in a hour-staining, black and whitedeveloper of thefollowing. composition:
- Example II Example II was repeated with the exception that after color development, the film was further developed in a non-staining black and white developer such as: I
- the colored andblack and white developed film The colored andblack and white developed film.
- Example I was then differentially fixed and processed through to completion in .the manner. set forth in Example I. This. procedure hasthe advantage over the .procedurein Example I inthat itxremoves all danger of having a. residual, negative silver image developed in the final or masking.
- the first exposure is exposed and. convertedxto metallic. silver thereby.
- Example III Example I was repeatedup to and including the differential fixation of the image layers following color development.
- Thev film was washed in running water for 10. minutes, andthen subjected to the action of a 1% solution of potassium iodide, for a period of 10 minutes.
- the positive silver-halide images, present, in the cyan and magenta layers, were converted into silver iodide, which is stable and non-sensitive to the actionof light.
- a silver salt such as silver ferrocyanide
- othersolutions of the commonly known oxidizingagent which convert the silver to a silver salt other than sil-- ver iodide may be used, such as, for example, ferric chloride, copper sulfate in the presenceof bromide or chloride ions, and the like.
- the bleached film was washedin running water for several minutes and; treated with a normal fixing bath for 5 minutes, washed, and then dried.
- the rate of fixation of the silver salts such as silver chloride, silver bromide, silver ferrocyanide, and the like, is so much greater than the dissolution of silver iodide that to all intents and purposes, the action can be considered as affecting only the silver chloride, silver bromide andsilver ferricyamde, thus leaving the silver iodide image substantially unimpaired.
- the silver iodide positive images, in the cyanand magenta layers serve as masking images in the same manner as the silver images of Examples I and II.
- the procedure, of the foregoing example has the advantage in that it cuts down the number of processing steps and reduces the time of proc.- essing.
- Multi-layer photographic film such as prepared according to United States Patents 2,269,158.; 2,266,443; 2,272,191; 2,284,877; 2,289,803; 2,304,940; 2,311,020; 2,350,380; 72,397,- 864-5-6 and 7, and the like, can alsobe processed into color negatives containing masking images in accordance with the present invention.
- Various other modifications will occur to those skilled in'the art which, however, do not depart from the spirit and nature of this invention, and we do not intend to be limited in the patent granted except as required by the following claims.
- the blue sensitive layer is the top layer with a yellow colloidal silver filter layer between the top blue layer and middle green layer
- said sensitized layers containing color formers capable of producing dye images complementary in color to the one for which the layer is sensitized, by exposing the said multilayer film to a colored object and color developing the same
- the improvement which comprises developing all layers of the said color developed film by a single development in a developer incapable of coupling with the color former in the layers for a time sufficient to bring the development to gamma infinity, selectively fixing the residual silver halides in the blue sensitive layer, bleaching the metallic silver in all layers including the filter layer to silver chloride at the same time so as to destroy the green and red sensitivities of the middle and lower layers, removing the silver chloride thus formed, exposing the residual silver halides in the green and red
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR957565D FR957565A (en(2012)) | 1946-10-16 | ||
| BE476660D BE476660A (en(2012)) | 1946-10-16 | ||
| US703480A US2635959A (en) | 1946-10-16 | 1946-10-16 | Process of producing multilayer color negatives containing masking images for color correction purposes |
| GB15284/47A GB637876A (en) | 1946-10-16 | 1947-06-10 | Process for producing multilayer colour negatives containing masking images for colour correction purposes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US703480A US2635959A (en) | 1946-10-16 | 1946-10-16 | Process of producing multilayer color negatives containing masking images for color correction purposes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2635959A true US2635959A (en) | 1953-04-21 |
Family
ID=24825556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US703480A Expired - Lifetime US2635959A (en) | 1946-10-16 | 1946-10-16 | Process of producing multilayer color negatives containing masking images for color correction purposes |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2635959A (en(2012)) |
| BE (1) | BE476660A (en(2012)) |
| FR (1) | FR957565A (en(2012)) |
| GB (1) | GB637876A (en(2012)) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4183750A (en) * | 1974-10-07 | 1980-01-15 | Goldberg Richard J | Color film and process for developing it |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2059887A (en) * | 1935-02-27 | 1936-11-03 | Eastman Kodak Co | Differential treatment of multilayer films |
| US2059884A (en) * | 1932-09-21 | 1936-11-03 | Eastman Kodak Co | Color photography |
| GB501040A (en) * | 1936-05-09 | 1939-02-20 | Kodak Ltd | Improvements in colour photographic development |
| GB541266A (en) * | 1940-02-17 | 1941-11-20 | Eastman Kodak Co | Improvements in methods of producing colour photographs employing colour correction |
| US2340656A (en) * | 1936-03-24 | 1944-02-01 | Chromogen Inc | Process for the production of partial color selection pictures out of subtractive multicolor images |
| US2357388A (en) * | 1942-11-06 | 1944-09-05 | Herman H Duerr | Method of color correction for multilayer negative film |
-
0
- BE BE476660D patent/BE476660A/xx unknown
- FR FR957565D patent/FR957565A/fr not_active Expired
-
1946
- 1946-10-16 US US703480A patent/US2635959A/en not_active Expired - Lifetime
-
1947
- 1947-06-10 GB GB15284/47A patent/GB637876A/en not_active Expired
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2059884A (en) * | 1932-09-21 | 1936-11-03 | Eastman Kodak Co | Color photography |
| US2059887A (en) * | 1935-02-27 | 1936-11-03 | Eastman Kodak Co | Differential treatment of multilayer films |
| US2340656A (en) * | 1936-03-24 | 1944-02-01 | Chromogen Inc | Process for the production of partial color selection pictures out of subtractive multicolor images |
| GB501040A (en) * | 1936-05-09 | 1939-02-20 | Kodak Ltd | Improvements in colour photographic development |
| GB541266A (en) * | 1940-02-17 | 1941-11-20 | Eastman Kodak Co | Improvements in methods of producing colour photographs employing colour correction |
| US2357388A (en) * | 1942-11-06 | 1944-09-05 | Herman H Duerr | Method of color correction for multilayer negative film |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4183750A (en) * | 1974-10-07 | 1980-01-15 | Goldberg Richard J | Color film and process for developing it |
Also Published As
| Publication number | Publication date |
|---|---|
| GB637876A (en) | 1950-05-31 |
| BE476660A (en(2012)) | |
| FR957565A (en(2012)) | 1950-02-23 |
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