GB399841A - Improvements in or relating to colouring photographs - Google Patents
Improvements in or relating to colouring photographsInfo
- Publication number
- GB399841A GB399841A GB1062932A GB1062932A GB399841A GB 399841 A GB399841 A GB 399841A GB 1062932 A GB1062932 A GB 1062932A GB 1062932 A GB1062932 A GB 1062932A GB 399841 A GB399841 A GB 399841A
- Authority
- GB
- United Kingdom
- Prior art keywords
- photographs
- bath
- brown
- crimson
- blue
- 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
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/40—Chemically transforming developed images
- G03C5/48—Mordanting
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Coloring (AREA)
Abstract
399,841. Colouring photographs. FILLERY, H., 76, Francis Road, Hounslow, Middlesex. April 13, 1932, No. 10629. [Class 98 (ii).] Photographs in monochrome are coloured by first bringing the photograph to a cold brown tone and then applying transparent dye solutions in a particular sequence. Prior to the application of the dye solutions, a swelling- agent, e.g. a mixture of saliva and alcohol, or an alcoholic solution of sodium glyco-oleate with or without a small quantity of glycerine, may be applied. A silver gaslight or bromide print is first bleached in a potassium ferricyanide bath, washed and toned brown in a sulphide of soda bath ; the final cold brown tone being obtained by toning in a bath composed of copper sulphate, ammonia, acetic acid, and water. For sepia or red-toned photographs, the sulphide bath is omitted. After washing and drying, the swelling-bath is applied and the photograph is tinted by applying aniline dye solutions ordinarily used for tinting photographs in particular strengths and in the order crimson, yellow, green, orange, grey-a mixture of blue and violet-blue, brown, crimson, scarlet, violet, indigo-a mixture of blue, scarlet, and crimson-and black-a mixture of crimson, scarlet, yellow, blue, and brown. The earlier colours may overlap, but the darker colours should be restricted to the areas concerned. According to the Provisional Specification, the dyes are applied by dipping.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1062932A GB399841A (en) | 1932-04-13 | 1932-04-13 | Improvements in or relating to colouring photographs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1062932A GB399841A (en) | 1932-04-13 | 1932-04-13 | Improvements in or relating to colouring photographs |
Publications (1)
Publication Number | Publication Date |
---|---|
GB399841A true GB399841A (en) | 1933-10-13 |
Family
ID=9971379
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1062932A Expired GB399841A (en) | 1932-04-13 | 1932-04-13 | Improvements in or relating to colouring photographs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB399841A (en) |
-
1932
- 1932-04-13 GB GB1062932A patent/GB399841A/en not_active Expired
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