GB485577A - A process for producing light-sensitive photographic material for obtaining coloured images - Google Patents
A process for producing light-sensitive photographic material for obtaining coloured imagesInfo
- Publication number
- GB485577A GB485577A GB31638/36A GB3163836A GB485577A GB 485577 A GB485577 A GB 485577A GB 31638/36 A GB31638/36 A GB 31638/36A GB 3163836 A GB3163836 A GB 3163836A GB 485577 A GB485577 A GB 485577A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- paper
- silver
- dinitro
- exposure
- 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
- G03C7/46—Subtractive processes not covered by the group G03C7/26; Materials therefor; Preparing or processing such materials
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Abstract
485,577. Photographic sensitive materials; colour photography. NAAMLOOZE VENNOOTSCHAP DE BATAAFSCHE PETROLEUM MAATSCHAPPIJ. Nov. 18, 1936, No. 31638. Convention date, Oct. 21. [Class 98 (ii)] Light-sensitive photographic material for the production of coloured images comprises a compound of the general formula R1(R2)NCO.COOMe in which R1 is an organic radicle containing a chromophore group, R2 is hydrogen or an organic radicle and Me is hydrogen or a metal. The metal may be silver, chromium, iron, mercury, or one of the alkali metals, or ammonium. Suitable compounds are the salts of oxamic acid, e.g. of o-nitro oxanilic acid. After exposure the metal is removed by a solvent, e.g. potassium cyanide in the case of silver or mercury, or water in the case of the alkali metals. The compounds may be formed into emulsions and several emulsions for different colours may be superimposed. The layers may also be treated with sensitizing dyes. The resulting images may be intensified, e.g. by diazotizing and coupling with an azo component, or reduced, e.g. with a sulphite solution or a ferricyanide reducer. In examples, (1) the oxamine derivative of mononitro-benzidine in gelatin solution is mixed with thiosinamine and silver nitrate and applied to paper. After exposure the paper is treated with ammonium persulphate and potassium cyanide giving a red image ; (2) the silver salt of 6 : 6<1>-dinitro-o-tolidine-dioxamic acid in gelatin is applied to paper. After exposure the material is treated with potassium cyanide giving a red picture; (3) the silver salt of 2 : 21-dinitro-benzidine-dioxamic acid is used as in example (2) to give a yellow picture ; (4) the silver salt of o- or p-nitrooxanilic acid is used as in example (2) ; (5) the ammonium salt of 2 : 2<1>-dinitro-benzidinedioxamic acid is applied to paper, exposed and washed with water giving a yellow picture. The anion part of the molecule may also form a body readily convertible into a dye.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL485577X | 1936-10-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB485577A true GB485577A (en) | 1938-05-18 |
Family
ID=19786626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31638/36A Expired GB485577A (en) | 1936-10-21 | 1936-11-18 | A process for producing light-sensitive photographic material for obtaining coloured images |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2193574A (en) |
| BE (1) | BE424152A (en) |
| FR (1) | FR828041A (en) |
| GB (1) | GB485577A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE546818A (en) * | 1955-04-06 | |||
| BE547020A (en) * | 1955-04-20 | |||
| US3230082A (en) * | 1962-05-14 | 1966-01-18 | Polaroid Corp | Color processes and products |
-
0
- BE BE424152D patent/BE424152A/xx unknown
-
1936
- 1936-11-18 GB GB31638/36A patent/GB485577A/en not_active Expired
-
1937
- 1937-10-11 US US168436A patent/US2193574A/en not_active Expired - Lifetime
- 1937-10-19 FR FR828041D patent/FR828041A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE424152A (en) | |
| US2193574A (en) | 1940-03-12 |
| FR828041A (en) | 1938-05-09 |
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