GB292140A - Improvements relating to the desensitising of photographic plates or films - Google Patents
Improvements relating to the desensitising of photographic plates or filmsInfo
- Publication number
- GB292140A GB292140A GB15169/28A GB1516928A GB292140A GB 292140 A GB292140 A GB 292140A GB 15169/28 A GB15169/28 A GB 15169/28A GB 1516928 A GB1516928 A GB 1516928A GB 292140 A GB292140 A GB 292140A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phenosafranine
- iso
- films
- desensitising
- improvements relating
- 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
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 1
- 229910002651 NO3 Inorganic materials 0.000 abstract 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 239000000839 emulsion Substances 0.000 abstract 1
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
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
- G03C5/32—Latensification; Densensitisation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
292,140. I. G. Farbenindustrie Akt.- Ges. June 15, 1927, [Convention date]. Desensitizing. - Plates or films coated with silver bromide emulsion are desensitized by treatment with an iso-phenosafranine, which does not stain the fingers or clothes of the operator. A 1/5000 strength aqueous solution of either 1: 3- iso-phenosafranine (1: 3-diamino-phenyl-phenazonium chloride) or 2: 3-iso-phenosafranine (2 : 3- diamino-phenyl-phenazonium nitrate) may be used before development or 5 cc. of either solution may be added to 100 cc. of the developer, desensitizing taking place in either case in one minute.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI0031435 | 1927-06-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB292140A true GB292140A (en) | 1928-09-13 |
Family
ID=7187873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15169/28A Expired GB292140A (en) | 1927-06-15 | 1928-05-23 | Improvements relating to the desensitising of photographic plates or films |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1760756A (en) |
| BE (1) | BE349610A (en) |
| FR (1) | FR650786A (en) |
| GB (1) | GB292140A (en) |
| NL (1) | NL25041C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3403025A (en) * | 1965-08-25 | 1968-09-24 | Eastman Kodak Co | Desensitization of silver halides to visible radiation with thiuram disulfides |
-
0
- NL NL25041D patent/NL25041C/xx active
- BE BE349610D patent/BE349610A/xx unknown
-
1927
- 1927-12-20 US US241447A patent/US1760756A/en not_active Expired - Lifetime
-
1928
- 1928-03-12 FR FR650786D patent/FR650786A/en not_active Expired
- 1928-05-23 GB GB15169/28A patent/GB292140A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR650786A (en) | 1929-02-11 |
| US1760756A (en) | 1930-05-27 |
| NL25041C (en) | |
| BE349610A (en) |
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