GB1315495A - Method of making photographic silver halide emulsions - Google Patents
Method of making photographic silver halide emulsionsInfo
- Publication number
- GB1315495A GB1315495A GB1315495DA GB1315495A GB 1315495 A GB1315495 A GB 1315495A GB 1315495D A GB1315495D A GB 1315495DA GB 1315495 A GB1315495 A GB 1315495A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver halide
- hgi
- hydroiodide
- mercury compound
- emulsion
- 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
- G03C1/09—Noble metals or mercury; Salts or compounds thereof; Sulfur, selenium or tellurium, or compounds thereof, e.g. for chemical sensitising
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
1315495 Making monodisperse photographic silver halide emulsions KODAK Ltd 27 Aug 1970 [28 Aug 1969] 42921/69 Heading G2C Chemical sensitization of a monodisperse photographic silver halide emulsion is effected using a noble metal sensitizer which is a compound of gold or a metal of Group VIII of the Periodic Table having an atomic weight greater than 100 and a sulphur or selenium sensitizer in the presence of a mercury compound. The mercury compound may be added to the emulsion at any stage prior to chemical sensitization, preferably immediately before chemical sensitization. The mercury compound may be mercuric bromide, (2-amino-5-iodopyridine hydroiodide) 2 HgI 2 , bis-(2-methyl-benzothiazole hydroiodide) HgI 2 or triphenylguanidine hydroiodide HgI 2 . The silver halide may be silver bromide and the grains may be cubic. The emulsion may contain gelatine or an acylated gelatine e.g. phthalated gelatine (see Example 2). The addition of the mercury compound prevents high fog levels developing during manufacture of these monodisperse emulsions.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4292169 | 1969-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1315495A true GB1315495A (en) | 1973-05-02 |
Family
ID=10426560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1315495D Expired GB1315495A (en) | 1969-08-28 | 1969-08-28 | Method of making photographic silver halide emulsions |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS4920970B1 (en) |
| BE (1) | BE755479A (en) |
| CH (1) | CH520347A (en) |
| DE (1) | DE2042188A1 (en) |
| FR (1) | FR2059358A5 (en) |
| GB (1) | GB1315495A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54118660A (en) * | 1978-03-07 | 1979-09-14 | Kimie Nakamura | Ultrasonic wave bubble generator |
| DE2932650C2 (en) | 1979-08-11 | 1982-03-11 | Du Pont de Nemours (Deutschland) GmbH, 4000 Düsseldorf | Process for the preparation of a monodisperse silver halide photographic emulsion |
| JPS5787671U (en) * | 1980-11-15 | 1982-05-29 | ||
| JPS5787670U (en) * | 1980-11-15 | 1982-05-29 | ||
| JPS5787672U (en) * | 1980-11-15 | 1982-05-29 | ||
| JPS5787673U (en) * | 1980-11-15 | 1982-05-29 | ||
| JPS6337185U (en) * | 1986-08-26 | 1988-03-10 |
-
1969
- 1969-08-28 GB GB1315495D patent/GB1315495A/en not_active Expired
-
1970
- 1970-08-25 DE DE19702042188 patent/DE2042188A1/en active Pending
- 1970-08-28 FR FR7031431A patent/FR2059358A5/fr not_active Expired
- 1970-08-28 BE BE755479D patent/BE755479A/en unknown
- 1970-08-28 CH CH1295270A patent/CH520347A/en not_active IP Right Cessation
- 1970-08-28 JP JP7499970A patent/JPS4920970B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR2059358A5 (en) | 1971-05-28 |
| DE2042188A1 (en) | 1971-03-18 |
| CH520347A (en) | 1972-03-15 |
| BE755479A (en) | 1971-02-01 |
| JPS4920970B1 (en) | 1974-05-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |