GB948442A - Improved light-sensitive photographic materials - Google Patents
Improved light-sensitive photographic materialsInfo
- Publication number
- GB948442A GB948442A GB611160A GB611160A GB948442A GB 948442 A GB948442 A GB 948442A GB 611160 A GB611160 A GB 611160A GB 611160 A GB611160 A GB 611160A GB 948442 A GB948442 A GB 948442A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per
- layer
- iodate
- feb
- silver halide
- 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
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
- G03C1/33—Spot-preventing agents
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
948,442. Photographic silver halide materials. GEVAERT PHOTOPRODUCTEN N.V. Feb. 22, 1960 [Feb.20, 1959], No. 6111/60. Heading G2C. To avoid spotting caused by the presence of reactive metals such as iron, copper, tin; lead, chromium and nickel and/or their compounds such as oxides in photographic silver halide emulsions, one or more of the layers forming the light-sensitive photographic material contains in watersoluble form an ammonium or alkali metal metavanadate, ortho-vanadate, iodate, molybdate, osmate, rhennate, ruthenate, tungstate,per-iodate,perrhenate or perruthenate, or iodic or per-iodic acid. The anti-spotting agent may be added to a protecting layer, an emulsion layer, a baryta coating layer on a paper support or to an intermediate layer. Examples are given of adding potassium perrhenate (or per-iodic acid) to the emulsion and of adding sodium metavanadate or sodium molybdate to a baryta coating.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE2038702 | 1959-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB948442A true GB948442A (en) | 1964-02-05 |
Family
ID=3864703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB611160A Expired GB948442A (en) | 1959-02-20 | 1960-02-22 | Improved light-sensitive photographic materials |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE575907A (en) |
| DE (1) | DE1137624B (en) |
| FR (1) | FR1249594A (en) |
| GB (1) | GB948442A (en) |
| NL (1) | NL248601A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE486964C (en) * | 1927-08-14 | 1929-11-28 | Johannes Heegaard Thiis Poulse | Process for avoiding so-called white spots on photographic developing paper |
-
0
- BE BE575907D patent/BE575907A/xx unknown
- NL NL248601D patent/NL248601A/xx unknown
-
1959
- 1959-05-05 DE DEG26991A patent/DE1137624B/en active Pending
-
1960
- 1960-01-20 FR FR819101A patent/FR1249594A/en not_active Expired
- 1960-02-22 GB GB611160A patent/GB948442A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1249594A (en) | 1961-03-20 |
| BE575907A (en) | |
| DE1137624B (en) | 1962-10-04 |
| NL248601A (en) |
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