GB1298119A - Process for preparation of photographic silver halide emulsions - Google Patents
Process for preparation of photographic silver halide emulsionsInfo
- Publication number
- GB1298119A GB1298119A GB3956770A GB3956770A GB1298119A GB 1298119 A GB1298119 A GB 1298119A GB 3956770 A GB3956770 A GB 3956770A GB 3956770 A GB3956770 A GB 3956770A GB 1298119 A GB1298119 A GB 1298119A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver halide
- emulsion
- benzotriazole
- silver
- preparation
- 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
-
- 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
- G03C1/07—Substances influencing grain growth during silver salt formation
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)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1298119 Preparation of photographic silver halide emulsions FUJI PHOTO FILM Co Ltd 17 Aug 1970 [18 Aug 1969] 39567/70 Heading G2C A process of preparing a silver halide photographic emulsion comprises reacting a watersoluble silver salt and a water-soluble halide in the presence of ammonia thereby to precipitate the silver halide in solution, wherein benzotriazole or a substituted benzotriazole not containing a mercapto or thiocarbonyl group is present during said reaction in an amount of 1À0 Î 10<SP>-5</SP> to 4À0 Î 10<SP>-3</SP> mole per mole of the total silver halide. The substituted benzotriazole may be 5-chloro-, 5-bromo-, 5-methyl-, 5-nitro- 4, 6-dinitro-, 1-ethyl-or 1-phenylbenzotriazole. The benzotriazole may be added in an aqueous solution of gelatin or in an aqueous solution of the water-soluble halide. The silver halide emulsion is preferably a chlorobromide or chloroiodobromide emulsion. A metal salt or a metal complex salt, the metal not being silver, e.g. rhodium ammonium chloride, may be added during preparation of the emulsion. High density, high contrast material with little fog formation is produced without decreasing the sensitivity.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6483469A JPS4920531B1 (en) | 1969-08-18 | 1969-08-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1298119A true GB1298119A (en) | 1972-11-29 |
Family
ID=13269657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3956770A Expired GB1298119A (en) | 1969-08-18 | 1970-08-17 | Process for preparation of photographic silver halide emulsions |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS4920531B1 (en) |
BE (1) | BE754970A (en) |
CA (1) | CA949802A (en) |
DE (1) | DE2041019C3 (en) |
FR (1) | FR2058899A5 (en) |
GB (1) | GB1298119A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4431729A (en) * | 1982-08-09 | 1984-02-14 | Polaroid Corporation | Method for preparing photosensitive silver halide emulsions |
-
0
- BE BE754970D patent/BE754970A/en unknown
-
1969
- 1969-08-18 JP JP6483469A patent/JPS4920531B1/ja active Pending
-
1970
- 1970-08-13 CA CA090,659A patent/CA949802A/en not_active Expired
- 1970-08-17 GB GB3956770A patent/GB1298119A/en not_active Expired
- 1970-08-18 DE DE19702041019 patent/DE2041019C3/en not_active Expired
- 1970-08-18 FR FR7030247A patent/FR2058899A5/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4431729A (en) * | 1982-08-09 | 1984-02-14 | Polaroid Corporation | Method for preparing photosensitive silver halide emulsions |
Also Published As
Publication number | Publication date |
---|---|
DE2041019B2 (en) | 1979-07-05 |
CA949802A (en) | 1974-06-25 |
FR2058899A5 (en) | 1971-05-28 |
DE2041019A1 (en) | 1971-03-04 |
JPS4920531B1 (en) | 1974-05-25 |
BE754970A (en) | 1971-02-01 |
DE2041019C3 (en) | 1980-03-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |