GB499768A - Improvements in anti-halation layers for photographic sensitive materials - Google Patents
Improvements in anti-halation layers for photographic sensitive materialsInfo
- Publication number
- GB499768A GB499768A GB20817/37A GB2081737A GB499768A GB 499768 A GB499768 A GB 499768A GB 20817/37 A GB20817/37 A GB 20817/37A GB 2081737 A GB2081737 A GB 2081737A GB 499768 A GB499768 A GB 499768A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver
- sulphide
- halation
- soluble
- silver nitrate
- 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
- G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
- G03C1/825—Photosensitive materials characterised by the base or auxiliary layers characterised by antireflection means or visible-light filtering means, e.g. antihalation
- G03C1/8255—Silver or silver compounds therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
499,768. Photographic anti-halation layers. BLOCH, O. F. July 27, 1937, No. 20817. [Class 98 (ii)] Light-sensitive photographic material, especially for use in the reversal process, has a front, back or intermediate anti-halation layer comprising finely divided or colloidal silver sulphide particles suspended in a binding agent which is permeable to a chemical solution by which the silver sulphide particles may be removed after exposure of the material. The anti-halation layer may be formed by preparing a mixture of gelatine and silver nitrate, converting the silver nitrate to silver sulphide by treatment with a water-soluble sulphide, setting the mixture and washing out the soluble salts, and then coating the silver sulphide suspension so formed on to a support or on to a light-sensitive layer carried on a support. An excess of silver nitrate in relation to the soluble sulphide may be used, which excess is converted to silver halide.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB20817/37A GB499768A (en) | 1937-07-27 | 1937-07-27 | Improvements in anti-halation layers for photographic sensitive materials |
US221395A US2171911A (en) | 1937-07-27 | 1938-07-26 | Antihalation layer for photographic sensitive materials |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB20817/37A GB499768A (en) | 1937-07-27 | 1937-07-27 | Improvements in anti-halation layers for photographic sensitive materials |
Publications (1)
Publication Number | Publication Date |
---|---|
GB499768A true GB499768A (en) | 1939-01-27 |
Family
ID=10152186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB20817/37A Expired GB499768A (en) | 1937-07-27 | 1937-07-27 | Improvements in anti-halation layers for photographic sensitive materials |
Country Status (2)
Country | Link |
---|---|
US (1) | US2171911A (en) |
GB (1) | GB499768A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1102942A (en) * | 1955-10-31 | 1955-10-27 | Kodak Pathe | Photographic reproduction process and new products for its implementation |
US5753402A (en) * | 1995-07-31 | 1998-05-19 | Eastman Kodak Company | Method for recording and processing motion picture film soundtrack |
-
1937
- 1937-07-27 GB GB20817/37A patent/GB499768A/en not_active Expired
-
1938
- 1938-07-26 US US221395A patent/US2171911A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US2171911A (en) | 1939-09-05 |
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