GB401961A - A method of treating photographic prints - Google Patents
A method of treating photographic printsInfo
- Publication number
- GB401961A GB401961A GB1032233A GB1032233A GB401961A GB 401961 A GB401961 A GB 401961A GB 1032233 A GB1032233 A GB 1032233A GB 1032233 A GB1032233 A GB 1032233A GB 401961 A GB401961 A GB 401961A
- Authority
- GB
- United Kingdom
- Prior art keywords
- toning
- solution
- bath
- photographic prints
- litre
- 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
Abstract
401,961. Treating photographic prints. GEVAERT PHOTO-PRODUCTEN NAAMLOOZE VENNOOTSCHAP, Oude-God, near Antwerp, Belgium.-(Assignees of Gevaert Werke Ges.; 9, Lutzowstrasse, Berlin.) April 6, 1933, Nos. 10322 and 10323. Convention dates, Sept. 16, 1932 and Nov. 3, 1932. [Class 98 (ii).] In order to minimize the loss of clarity in photographic prints during drying, the prints are treated with a toning solution in such concentration or for so short a period that no visible toning is produced. The toning substance may be a compound of gold, platinum, palladium, sulphur, selenium or tellurium, and alkali seleno-sulphates are specially suitable. The substance may be incorporated in the light sensitive layer, applied on the back of the support or added to the developer, washing water or fixing bath, or a separate bath may be used. In one example, a bath consisting of 40 grams of ammonium thiocyanate and 40 c.c. of a 1 % solution of gold chloride in a litre of water may be used. In another example 0.1 grams of sodium selenite are added to 1 litre of fixing solution.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG0083597 | 1932-09-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB401961A true GB401961A (en) | 1933-11-23 |
Family
ID=7137808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1032233A Expired GB401961A (en) | 1932-09-16 | 1933-04-06 | A method of treating photographic prints |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE392947A (en) |
| FR (1) | FR751948A (en) |
| GB (1) | GB401961A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2332749A (en) * | 1997-12-22 | 1999-06-30 | Agfa Gevaert Ag | Process for the production of archival silver images |
-
0
- BE BE392947D patent/BE392947A/xx unknown
-
1933
- 1933-03-01 FR FR751948D patent/FR751948A/en not_active Expired
- 1933-04-06 GB GB1032233A patent/GB401961A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2332749A (en) * | 1997-12-22 | 1999-06-30 | Agfa Gevaert Ag | Process for the production of archival silver images |
| US5989790A (en) * | 1997-12-22 | 1999-11-23 | Agfa Gevaert Ag | Process for the production of archival silver images |
| GB2332749B (en) * | 1997-12-22 | 2001-11-07 | Agfa Gevaert Ag | Process for the production of archival silver images |
Also Published As
| Publication number | Publication date |
|---|---|
| FR751948A (en) | 1933-09-12 |
| BE392947A (en) |
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