GB510808A - Improvements in treating light sensitive photographic elements - Google Patents
Improvements in treating light sensitive photographic elementsInfo
- Publication number
- GB510808A GB510808A GB409538A GB409538A GB510808A GB 510808 A GB510808 A GB 510808A GB 409538 A GB409538 A GB 409538A GB 409538 A GB409538 A GB 409538A GB 510808 A GB510808 A GB 510808A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hours
- humidity
- per cent
- twenty
- temperature
- 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
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
- G03C1/08—Sensitivity-increasing substances
- G03C1/10—Organic substances
- G03C1/12—Methine and polymethine dyes
-
- 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
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/32—Latensification; Densensitisation
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Abstract
510,808. Photographic developing processes. KODAK Ltd. (Eastman Kodak Co.). Feb. 9, 1938, No. 4095. [Class 98 (ii)] Images of increased density are obtained in highly sensitive gelatino-silver salt emulsions by subjecting the exposed layer before development to a temperature of at least 90‹F. and a humidity of at least 50 per cent. for a period of at least four hours and not exceeding twenty-four hours. Alternatively, the exposed layer may be subjected to a temperature of at least 120‹F. and a humidity of at least 20 per cent. for a period of at least one hour and not exceeding twenty-four hours. The increase of density is greater in the case of red-sensitive than of green-sensitive emulsions. Examples are given of the effect of subjecting an exposed panchromatic emulsion to (1) a temperature of 120‹F. and 80 per cent. humidity for from four to twenty-four hours; (2) 120‹F. and 20 per cent. humidity for four hours; (3) 90 ‹F. and 80 per cent humidity for from four. to twenty-four hours; and (4) 90‹F. and 50 per cent. humidity for twenty-four hours. The treatment is applicable to bi- and tripacks and multi-layer material for colour photography. The heating may take place in air, at normal or reduced pressure, or in an inert gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB409538A GB510808A (en) | 1938-02-09 | 1938-02-09 | Improvements in treating light sensitive photographic elements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB409538A GB510808A (en) | 1938-02-09 | 1938-02-09 | Improvements in treating light sensitive photographic elements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB510808A true GB510808A (en) | 1939-08-09 |
Family
ID=9770649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB409538A Expired GB510808A (en) | 1938-02-09 | 1938-02-09 | Improvements in treating light sensitive photographic elements |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB510808A (en) |
-
1938
- 1938-02-09 GB GB409538A patent/GB510808A/en not_active Expired
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