GB637876A - Process for producing multilayer colour negatives containing masking images for colour correction purposes - Google Patents
Process for producing multilayer colour negatives containing masking images for colour correction purposesInfo
- Publication number
- GB637876A GB637876A GB15284/47A GB1528447A GB637876A GB 637876 A GB637876 A GB 637876A GB 15284/47 A GB15284/47 A GB 15284/47A GB 1528447 A GB1528447 A GB 1528447A GB 637876 A GB637876 A GB 637876A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver
- colour
- layers
- film
- sulphide
- 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
- 230000000873 masking effect Effects 0.000 title abstract 4
- 229910052709 silver Inorganic materials 0.000 abstract 10
- 239000004332 silver Substances 0.000 abstract 10
- -1 silver halide Chemical class 0.000 abstract 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 5
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract 3
- 239000003513 alkali Substances 0.000 abstract 3
- 238000012986 modification Methods 0.000 abstract 3
- 230000004048 modification Effects 0.000 abstract 3
- 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 abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 abstract 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 abstract 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 abstract 2
- 229910021607 Silver chloride Inorganic materials 0.000 abstract 2
- 229910021612 Silver iodide Inorganic materials 0.000 abstract 2
- 238000004061 bleaching Methods 0.000 abstract 2
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 abstract 2
- 229940045105 silver iodide Drugs 0.000 abstract 2
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 abstract 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000004133 Sodium thiosulphate Substances 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 235000019270 ammonium chloride Nutrition 0.000 abstract 1
- 239000001166 ammonium sulphate Substances 0.000 abstract 1
- 235000011130 ammonium sulphate Nutrition 0.000 abstract 1
- 235000019441 ethanol Nutrition 0.000 abstract 1
- 235000011187 glycerol Nutrition 0.000 abstract 1
- 150000004820 halides Chemical class 0.000 abstract 1
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 abstract 1
- 235000019345 sodium thiosulphate Nutrition 0.000 abstract 1
- 238000001228 spectrum Methods 0.000 abstract 1
- 235000000346 sugar Nutrition 0.000 abstract 1
- PGWMQVQLSMAHHO-UHFFFAOYSA-N sulfanylidenesilver Chemical compound [Ag]=S PGWMQVQLSMAHHO-UHFFFAOYSA-N 0.000 abstract 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 abstract 1
- 229910021653 sulphate ion Inorganic materials 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
- G03C7/18—Processes for the correction of the colour image in subtractive colour photography
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
637,876. Colour photography. GENERAL ANILINE & FILM CORPORATION. June 10, 1947, No. 15284. Convention date, Oct. 16, 1946. [Class 98 (ii)] Subtractively coloured negatives incorporating correction printing masks are made by exposing, to a coloured object, a multilayer film having silver halide layers, the halide consisting substantially of bromide, sensitized respectively to the blue, green and red regions of the spectrum and containing colour formers ; colour developing, selectively fixing the residual silver halide in the blue sensitive layer, con. verting the remaining light-sensitive silver halides in the other layers into masking images of metallic silver, or of light insensitive silver sulphide or iodide, and removing the silver formed in situ with the colour developed images. The multilayer film is of normal type, as described in numerous Specifications and after exposure and colour development it is treated in an aqueous bath containing ammonium or sodium thiosulphate and an alkali sulphate, an alcohol, sugar or glycerin to remove silver halide from the upper most layer only ; after which, in the one modification of the invention all the silver present is bleached to silver chloride as by a potassium ferricyanide-sodium chloride bath and this silver chloride is removed by aqueous alkali sulphite, ammonium chloride or ammonia ; the film is then reexposed to light, developed in a black and white developer, washed, fixed and dried to provide masking images of silver ; and in the other modification the film is treated in an alkali iodide or sulphide bath to convert the residual silver halides to silver iodide or sulphide masking images without re-exposure, and in this case the metallic silver is removed by selective bleaching and fixing either prior to or after production of the silver iodide or sulphide masks. In either modification it is desirable, after colour development, to continue development with a black and white develop to achieve gamma infinity in all three layers, as described and claimed in Specification 637,865. The invention is compared with that of Specification 541,266, which also produces masks in the green and red sensitive layers of multicolour film, but which has the restriction that the colour sensitivity of these layers must not be destroyed in the bleaching step. Specifications 436,587, 458,400, 465,823, 471,520, 524,154, 524,554, 524,555, 527,283, 540,365, 540,366, 540,367, 540,368, 540,525, and 637,879, also are referred to.
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 |
|---|---|
| GB637876A true GB637876A (en) | 1950-05-31 |
Family
ID=24825556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15284/47A Expired GB637876A (en) | 1946-10-16 | 1947-06-10 | Process for producing multilayer colour negatives containing masking images for colour correction purposes |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2635959A (en) |
| BE (1) | BE476660A (en) |
| FR (1) | FR957565A (en) |
| GB (1) | GB637876A (en) |
Families Citing this family (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 |
Family Cites Families (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 |
| BE475548A (en) * | 1942-11-06 |
-
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
Also Published As
| Publication number | Publication date |
|---|---|
| US2635959A (en) | 1953-04-21 |
| BE476660A (en) | |
| FR957565A (en) | 1950-02-23 |
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