GB506450A - Improvements in or relating to photographic bleaches - Google Patents
Improvements in or relating to photographic bleachesInfo
- Publication number
- GB506450A GB506450A GB8360/38A GB836038A GB506450A GB 506450 A GB506450 A GB 506450A GB 8360/38 A GB8360/38 A GB 8360/38A GB 836038 A GB836038 A GB 836038A GB 506450 A GB506450 A GB 506450A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- photographic
- alkali metal
- relating
- metal iodide
- 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
- G03C5/44—Bleaching; Bleach-fixing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
506,450. Photographic developing processes. CINECOLOR, Inc. March 18, 1938, No. 8360. Convention date, April 23, 1937. [Glass 98 (ii)] A photographic film bleach for minimizing over-all stain and lack of transparency in the finished picture contains À02 per cent to À6 per cent iodine and 1 to 4 per cent but excluding 2À6 to 3À3 per cent of an alkali metal iodide, e.g. potassium iodide. The film is subjected to a pre-dip in a 7, to 14 per cent solution of said alkali metal iodide to shorten the time of the bleaching process. A theory of the action taking place is given. Specification 466,290 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US138536A US2141354A (en) | 1937-04-23 | 1937-04-23 | Method of treating photographic film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB506450A true GB506450A (en) | 1939-05-30 |
Family
ID=22482462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8360/38A Expired GB506450A (en) | 1937-04-23 | 1938-03-18 | Improvements in or relating to photographic bleaches |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2141354A (en) |
| GB (1) | GB506450A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2543179A (en) * | 1942-03-13 | 1951-02-27 | Polaroid Corp | Developer for dichroic iodine images |
| US2423504A (en) * | 1943-09-22 | 1947-07-08 | Polaroid Corp | Process for forming lightpolarizing images |
| JPS5953552B2 (en) * | 1974-08-23 | 1984-12-25 | 富士写真フイルム株式会社 | Bleach phase type hologram creation method and bleaching solution |
| GB9019604D0 (en) * | 1990-09-07 | 1990-10-24 | Kodak Ltd | Silver image bleaching process |
-
1937
- 1937-04-23 US US138536A patent/US2141354A/en not_active Expired - Lifetime
-
1938
- 1938-03-18 GB GB8360/38A patent/GB506450A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2141354A (en) | 1938-12-27 |
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