GB1015656A - A process for increasing the sensitivity of photographic silver halide emulsions - Google Patents
A process for increasing the sensitivity of photographic silver halide emulsionsInfo
- Publication number
- GB1015656A GB1015656A GB16039/64A GB1603964A GB1015656A GB 1015656 A GB1015656 A GB 1015656A GB 16039/64 A GB16039/64 A GB 16039/64A GB 1603964 A GB1603964 A GB 1603964A GB 1015656 A GB1015656 A GB 1015656A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gold
- potassium
- salt
- silver halide
- chloro
- 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
- G03C1/08—Sensitivity-increasing substances
- G03C1/10—Organic substances
Abstract
1,015,656. Photographic silver halide emulsions. AGFA, A.G. April 17, 1964 [April 24, 1963], No. 16039/64. Heading G2C. Photographic silver halide emulsions are sensitized by after-ripening them at an acid pH in the presence of nitrilo-triacetic acid or salt thereof, and a water-soluble salt of gold or of a Group VIII metal having an atomic weight greater than 100. The preferred metal salt is auric chloride but complex gold salts such as potassium chloroaurate, potassium aurous thiosulphate, potassium aurous sulphite or potassium chloro-, bromo- or iodo-aurite or the corresponding sodium, calcium, strontium, cadmium or gallium salts and organic gold compounds such as pyridine trichloro-gold, ethylene-diamine-bis trichloro gold, diethylbromo-gold, diethyl gold acetone and gold thiosinamine complexes may be used. The Group VIII salt may be a chloropalladate, a chloro or bromo platinate or a chloro-rhodate, ruthenate, iridate,platinite or palladite. The emulsions may contain additional sensitizers such as polyalkylene oxides, onium compounds and sulphur compounds.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEA42948A DE1175073B (en) | 1963-04-24 | 1963-04-24 | Process to increase the sensitivity of halogen silver emulsions using noble metal salts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1015656A true GB1015656A (en) | 1966-01-05 |
Family
ID=6933392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16039/64A Expired GB1015656A (en) | 1963-04-24 | 1964-04-17 | A process for increasing the sensitivity of photographic silver halide emulsions |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3318702A (en) |
| BE (1) | BE647038A (en) |
| CH (1) | CH439957A (en) |
| DE (1) | DE1175073B (en) |
| GB (1) | GB1015656A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4828962A (en) * | 1986-10-15 | 1989-05-09 | Minnesota Mining And Manufacturing Company | High contrast scanner photographic elements employing ruthenium and iridium dopants |
| WO2013064852A1 (en) | 2011-11-02 | 2013-05-10 | Smith & Nephew Plc | Reduced pressure therapy apparatuses and methods of using same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5832370B2 (en) * | 1974-02-25 | 1983-07-12 | 富士写真フイルム株式会社 | squirrel beetle |
-
1963
- 1963-04-24 DE DEA42948A patent/DE1175073B/en active Pending
-
1964
- 1964-03-31 US US356074A patent/US3318702A/en not_active Expired - Lifetime
- 1964-04-09 CH CH463764A patent/CH439957A/en unknown
- 1964-04-17 GB GB16039/64A patent/GB1015656A/en not_active Expired
- 1964-04-24 BE BE647038D patent/BE647038A/xx unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4828962A (en) * | 1986-10-15 | 1989-05-09 | Minnesota Mining And Manufacturing Company | High contrast scanner photographic elements employing ruthenium and iridium dopants |
| WO2013064852A1 (en) | 2011-11-02 | 2013-05-10 | Smith & Nephew Plc | Reduced pressure therapy apparatuses and methods of using same |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1175073B (en) | 1964-07-30 |
| BE647038A (en) | 1964-10-26 |
| US3318702A (en) | 1967-05-09 |
| CH439957A (en) | 1967-07-31 |
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