GB489299A - Improvements in or relating to the chemical treatment of photographic images - Google Patents
Improvements in or relating to the chemical treatment of photographic imagesInfo
- Publication number
- GB489299A GB489299A GB2016/37A GB201637A GB489299A GB 489299 A GB489299 A GB 489299A GB 2016/37 A GB2016/37 A GB 2016/37A GB 201637 A GB201637 A GB 201637A GB 489299 A GB489299 A GB 489299A
- Authority
- GB
- United Kingdom
- Prior art keywords
- colour
- layers
- images
- bleached
- film
- 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
- G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
- G03C7/407—Development processes or agents therefor
- G03C7/413—Developers
-
- 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
- G03C5/261—Non-bath processes, e.g. using pastes, webs, viscous compositions
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Abstract
489,299. Colour photography. MURRAY, H. D., and SPENCER, D. A. Jan. 22, 1937, No. 2016. [Class 98 (ii)] Exposed photographic material of the kind having one or more photographic layers on each side of the support is colour developed with two different colour developing solutions by applying to one side a coating layer of one of the colour developing solutions which has been thickened by the addition to it of sufficient thickening agent to render it highly viscous when in position on the material or to render it capable of being set to a gel on cooling, and by applying to the other side a coating layer of the other colour developer solution which has been thickened in a similar manner, leaving the coatings in position for sufficient time for them .to develop the images in the photographic layers and then removing the coatings. Suitable thickening agents are gelatine, glue, gums, and boiled starch. In an example, a film bearing on each side a hardened gelatine layer containing a silver colour component image produced by exposure, development, fixing, washing, and drying is bleached in a bath containing potassium ferricyanide and sodium chloride, which converts the images to silver chloride. The images may also be bleached to silver bromide. The film is washed and surface moisture removed by a current of air. The bleached images are rendered developable by exposure to light. The coating of colour developer thickened with gelatine may be applied warm to one side by rollers, and allowed to cool or chilled, and a coating of a different colour developer is applied to the other side. The layers may be left in position from 4 to 6 minutes, and then removed by washing in or spraying with warm water or by scrapers or by a rotating wheel. The developed silver is removed with Farmer's reducer. The coating layer may be highly viscous instead of being allowed to set. Colour developing formulµ are given, and may include ethyl glycol and diethanolamine. Colour formers referred to are 1: 5-dihydroxynaphthalene, 1 : 3-diphenyl - 5 - pyrazolone, 1 - p - nitrophenyl - 3 - methyl-5-pyrazoloiie, 1-phenyl-3-furyl-5-pyrazolone, alpha-chlor-acetoacet-p-toluidide, and p-nitrophenylacetonitrile. The process may be applied to a film having two layers on one side of the support and one or two layers on the other side of the support. The process may be applied to an exposed film that has not been developed and bleached. Specifications 308,803, [Class 98 (ii)], and 420,356 are referred to.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2016/37A GB489299A (en) | 1937-01-22 | 1937-01-22 | Improvements in or relating to the chemical treatment of photographic images |
US184096A US2196226A (en) | 1937-01-22 | 1938-01-08 | Chemical treatment of photographic images |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2016/37A GB489299A (en) | 1937-01-22 | 1937-01-22 | Improvements in or relating to the chemical treatment of photographic images |
Publications (1)
Publication Number | Publication Date |
---|---|
GB489299A true GB489299A (en) | 1938-07-22 |
Family
ID=9732108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2016/37A Expired GB489299A (en) | 1937-01-22 | 1937-01-22 | Improvements in or relating to the chemical treatment of photographic images |
Country Status (2)
Country | Link |
---|---|
US (1) | US2196226A (en) |
GB (1) | GB489299A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1304593A1 (en) * | 2001-10-09 | 2003-04-23 | Tetenal Photowerk GmbH & Co. KG | Photographic reagent |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE453209A (en) * | 1939-11-02 | |||
US2500421A (en) * | 1944-11-03 | 1950-03-14 | Polaroid Corp | Photographic silver halide transfer process |
US2546400A (en) * | 1945-12-11 | 1951-03-27 | Du Pont | Color yielding elements for color photography |
US2616807A (en) * | 1946-11-29 | 1952-11-04 | Polaroid Corp | Silver halide developer containing a film-forming plastic and a water insoluble finely comminuted solid substance |
US2603565A (en) * | 1947-01-15 | 1952-07-15 | Polaroid Corp | Photographic film forming image transfer composition |
US2653527A (en) * | 1947-02-19 | 1953-09-29 | Polaroid Corp | Process for treating photosensitive materials by spreading thereon a layer of processing liquid and apparatus for performing said process |
US2647056A (en) * | 1948-02-12 | 1953-07-28 | Polaroid Corp | One step photographic transfer process |
US8465504B2 (en) | 2011-01-25 | 2013-06-18 | Isuturing, Llc | Devices and methods for continuous surgical suturing |
-
1937
- 1937-01-22 GB GB2016/37A patent/GB489299A/en not_active Expired
-
1938
- 1938-01-08 US US184096A patent/US2196226A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1304593A1 (en) * | 2001-10-09 | 2003-04-23 | Tetenal Photowerk GmbH & Co. KG | Photographic reagent |
Also Published As
Publication number | Publication date |
---|---|
US2196226A (en) | 1940-04-09 |
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