GB341371A - - Google Patents
Info
- Publication number
- GB341371A GB341371A GB14568/30A GB1456830A GB341371A GB 341371 A GB341371 A GB 341371A GB 14568/30 A GB14568/30 A GB 14568/30A GB 1456830 A GB1456830 A GB 1456830A GB 341371 A GB341371 A GB 341371A
- Authority
- GB
- United Kingdom
- Prior art keywords
- agent
- thiourea
- benzene
- derivative
- binding
- 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
- G03C7/02—Direct bleach-out processes; Materials therefor; Preparing or processing such materials
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Adhesive Tapes (AREA)
- Detergent Compositions (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
341,371. Photographic printing-processes. I. G. FARBENINDUSTRIE AKT.-GES., Frankfort-on-Main, Germany. May 12, 1930, No. 14568. Convention date, May 11, 1929. [Class 98 (ii).] Pictures made on layers containing dyestuffs which bleach out on exposure to light and are sensitized with a derivative of thiourea such as diethyl-thiosinamine, are fixed by treatment with sulphurous acid, which reacts with the derivative of thiourea and destroys its sensitizing action. The fixing agent may be dissolved in water or in an organic solvent which does not dissolve the binding- agent of the sensitive layer, or it may be applied in the form of sulphur dioxide. The reaction product of the fixing process may be removed by a liquid which swells the binding-agent of the sensitive layer without attacking the dyestuffs (such as a mixture of alcohol and benzene); or, if the product forms on the surface, it may be removed by a liquid such as benzene, or mechanically.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI0038035 | 1929-05-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB341371A true GB341371A (en) | 1931-01-15 |
Family
ID=7189676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14568/30A Expired GB341371A (en) | 1929-05-11 | 1930-05-12 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1850162A (en) |
| FR (1) | FR695364A (en) |
| GB (1) | GB341371A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB586782A (en) * | 1944-11-08 | 1947-03-31 | Eastman Kodak Co | Improvements relating to photographic materials |
| US3285744A (en) * | 1963-04-04 | 1966-11-15 | Horizons Inc | Photography |
| US3892569A (en) * | 1972-12-04 | 1975-07-01 | Gen Film Dev Corp | Photosensitive sheets comprising organic dyes and sensitizers |
-
1930
- 1930-04-25 US US447420A patent/US1850162A/en not_active Expired - Lifetime
- 1930-05-09 FR FR695364D patent/FR695364A/en not_active Expired
- 1930-05-12 GB GB14568/30A patent/GB341371A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1850162A (en) | 1932-03-22 |
| FR695364A (en) | 1930-12-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US742405A (en) | Photographic plate and process of making same. | |
| GB388670A (en) | Improvements in sensitising photographic bleaching-out layers | |
| GB952063A (en) | Improvements in the hardening of gelatin | |
| DE1228142B (en) | Photographic printing photosensitive material | |
| GB341371A (en) | ||
| GB687751A (en) | Process and material for the direct production of positive photographic images | |
| DE887731C (en) | Process for making positive copies of positive originals using diazo compounds | |
| GB497023A (en) | An improved manufacture of photographic material | |
| US2090450A (en) | Photographic dusting-on process by the employment of acetals as the light-sensitive material | |
| US1751318A (en) | Process for obtaining photographic images | |
| DE899586C (en) | Process for making permanent light records on layers of silver salt | |
| GB365742A (en) | Improvements in or relating to developing, tinting, toning and washing cinematograph films | |
| US2065302A (en) | Method for obtaining slightly relieved photographic images | |
| DE458825C (en) | Process for making blueprints and photocopies | |
| GB178828A (en) | Photographic print-out paper and prints made therefrom | |
| US2061688A (en) | Manufacture of direct positives for autotype | |
| GB348102A (en) | Process of fixing light-sensitive layers containing basic dyestuffs | |
| DE381551C (en) | Process for developing copies from diazo anhydrides | |
| DE590563C (en) | Process of preparing films, especially thin and thinnest films, for the application of light-sensitive layers | |
| GB665984A (en) | Improvements in and relating to the manufacture of photographic reversal images | |
| GB284253A (en) | Process of treating and producing light-sensitive layers on photographic and heliographic papers | |
| DE767270C (en) | Light sensitive colored layers | |
| US1256981A (en) | Method of producing photographic films of varying porousness. | |
| DE649635C (en) | Process for the formation of protective layers on photographic images, especially serial images | |
| US1949911A (en) | Photographic developer |