GB511770A - Improvements in colour photography - Google Patents
Improvements in colour photographyInfo
- Publication number
- GB511770A GB511770A GB1792/38A GB179238A GB511770A GB 511770 A GB511770 A GB 511770A GB 1792/38 A GB1792/38 A GB 1792/38A GB 179238 A GB179238 A GB 179238A GB 511770 A GB511770 A GB 511770A
- Authority
- GB
- United Kingdom
- Prior art keywords
- colour
- development
- dyestuff
- developer
- silver
- 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
- 239000000975 dye Substances 0.000 abstract 8
- 238000009792 diffusion process Methods 0.000 abstract 4
- 229910052709 silver Inorganic materials 0.000 abstract 4
- 239000004332 silver Substances 0.000 abstract 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 239000000839 emulsion Substances 0.000 abstract 3
- KJCVRFUGPWSIIH-UHFFFAOYSA-N 1-naphthol Chemical compound C1=CC=C2C(O)=CC=CC2=C1 KJCVRFUGPWSIIH-UHFFFAOYSA-N 0.000 abstract 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 abstract 2
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 abstract 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 abstract 2
- RICDAKOKYPOJPN-UHFFFAOYSA-N 1-n,4-dimethylbenzene-1,2-diamine Chemical compound CNC1=CC=C(C)C=C1N RICDAKOKYPOJPN-UHFFFAOYSA-N 0.000 abstract 1
- BZORFPDSXLZWJF-UHFFFAOYSA-N N,N-dimethyl-1,4-phenylenediamine Chemical compound CN(C)C1=CC=C(N)C=C1 BZORFPDSXLZWJF-UHFFFAOYSA-N 0.000 abstract 1
- DYRDKSSFIWVSNM-UHFFFAOYSA-N acetoacetanilide Chemical compound CC(=O)CC(=O)NC1=CC=CC=C1 DYRDKSSFIWVSNM-UHFFFAOYSA-N 0.000 abstract 1
- 238000007792 addition Methods 0.000 abstract 1
- 230000004075 alteration Effects 0.000 abstract 1
- 238000004061 bleaching Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 238000012505 colouration Methods 0.000 abstract 1
- 229960003280 cupric chloride Drugs 0.000 abstract 1
- QELUYTUMUWHWMC-UHFFFAOYSA-N edaravone Chemical compound O=C1CC(C)=NN1C1=CC=CC=C1 QELUYTUMUWHWMC-UHFFFAOYSA-N 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- -1 silver halide Chemical class 0.000 abstract 1
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
- 235000010265 sodium sulphite Nutrition 0.000 abstract 1
- 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 abstract 1
- 239000000126 substance Substances 0.000 abstract 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
- G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
511,770. Colour photography. I. G. FARBENINDUSTRIE AKT.-GES. Jan. 19. 1938. No. 1792. Convention date, Jan. 21, 1937. [Class 98 (ii)] Colour pictures on multilayer photographic material comprising silver halide emulsion layers containing dyestuff components fast to diffusion are produced by exposure, development to a black-and-white picture, fixing conversion of the silver to a redevelopable silver salt, and colour development. False colour balance may be eliminated by successive development with different colour developers acting with different speeds on the dyestuff components contained in the layers. Different colour developing substances may-be used or the speed of action of the same or different developers may be varied by additions such as sodium sulphite, sodium carbonate, sodium hydroxide or ethanolamine. The colour developer may also contain additional dyestuff components for colour correction purposes. In an example, an exposed film comprising (a) a panchromatic emulsion containing a dyestuff component fast to diffusion which yields a blue image on colour development, (b) a green-sensitized emulsion containing a dyestuff component fast to diffusion which yields a red image on colour development and (c) a non-colour sensitized layer containing a dyestuff component fast to diffusion which yields a yellow image on colour development is developed to black-and-white, washed and fixed, bleached in cupric chloride solution, washed, developed in a p-aminodimethylaniline developer, washed, and the silver image removed with Farmer's 'Reducer. Incorrect colouration may be corrected by bleaching the silver produced by colour development and re-developing with a colour developer containing a dyestuff component giving a compensating colour, for example, 1-phenyl-3-methyl-5-pyrazolone or alphanaphthol. A dyestuff component, for example acetoacetic acid anilide, may alternatively be added to the first colour developer. In another example a colour developer giving the desired alteration of colour, for example 6-methylamino- 3-toluidine, is used in place of p-amiriodimethylaniline. Specifications 2562/13, [Class 98 (ii)], 457,326, 458,400, 459,665, 460,580, 460,599, 465,823, 467,087, 478,345, 479,838, 481,275, 483,000,' 484,698, 486,848, 489,093, 489,161 and 489,274 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI0056935 | 1937-01-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB511770A true GB511770A (en) | 1939-08-24 |
Family
ID=7194471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1792/38A Expired GB511770A (en) | 1937-01-21 | 1938-01-19 | Improvements in colour photography |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2268630A (en) |
| BE (1) | BE425838A (en) |
| FR (1) | FR832245A (en) |
| GB (1) | GB511770A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE480409A (en) * | 1947-02-17 | |||
| BE482331A (en) * | 1947-05-07 | |||
| US2623822A (en) * | 1949-12-06 | 1952-12-30 | Gen Aniline & Film Corp | Method of obtaining multicolored photographic images of increased color density |
| US2704710A (en) * | 1950-04-18 | 1955-03-22 | Gen Aniline & Film Corp | Precipitation of azo dyes in silver halide emulsions by means of guanidine and biguanide compounds containing long alkyl chains |
| BE549815A (en) * | 1952-04-15 |
-
0
- BE BE425838D patent/BE425838A/xx unknown
-
1938
- 1938-01-06 US US183588A patent/US2268630A/en not_active Expired - Lifetime
- 1938-01-18 FR FR832245D patent/FR832245A/en not_active Expired
- 1938-01-19 GB GB1792/38A patent/GB511770A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE425838A (en) | |
| FR832245A (en) | 1938-09-23 |
| US2268630A (en) | 1942-01-06 |
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