GB1091342A - Method of preparing photographic silver halide emulsions and emulsions prepared thereby - Google Patents
Method of preparing photographic silver halide emulsions and emulsions prepared therebyInfo
- Publication number
- GB1091342A GB1091342A GB2530/65A GB253065A GB1091342A GB 1091342 A GB1091342 A GB 1091342A GB 2530/65 A GB2530/65 A GB 2530/65A GB 253065 A GB253065 A GB 253065A GB 1091342 A GB1091342 A GB 1091342A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver halide
- emulsions
- photographic silver
- emulsion
- jan
- 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
- 239000000839 emulsion Substances 0.000 title abstract 6
- 229910052709 silver Inorganic materials 0.000 title abstract 4
- 239000004332 silver Substances 0.000 title abstract 4
- -1 silver halide Chemical class 0.000 title abstract 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 2
- 229910052749 magnesium Inorganic materials 0.000 abstract 2
- 239000011777 magnesium Substances 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 2
- 239000011230 binding agent Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 238000010348 incorporation Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
- 239000003381 stabilizer Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
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
- G03C1/34—Fog-inhibitors; Stabilisers; Agents inhibiting latent image regression
-
- 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
-
- 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
- G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
- G03C1/95—Photosensitive materials characterised by the base or auxiliary layers rendered opaque or writable, e.g. with inert particulate additives
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
Abstract
1,091,342. Photographic silver halide emulsions. EASTMAN KODAK CO. Jan. 20, 1965 [Jan.20, 1964], No.2530/65. Heading G2C. The sensitivity of a photographic silver halide emulsion is increased by incorporating magnesium particles therein just before coating or at any stage during manufacture of the emulsion and subsequently removing them, preferably after 1 to 2 minutes by filtration. An anti-foggant such as 4-hydroxy-6- methyl-1:3:3a:7-tetrazaindene may be added to the emulsion before incorporation of the magnesium particles. The usual chemical and optical sensitizers, anti-foggants, stabilizers and speedincreasing compounds may be present and various types of silver halide grains and binders may be used.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US338634A US3282700A (en) | 1964-01-20 | 1964-01-20 | Chemical sensitization of photographic silver halide emulsions with magnesium metal powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1091342A true GB1091342A (en) | 1967-11-15 |
Family
ID=23325484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2530/65A Expired GB1091342A (en) | 1964-01-20 | 1965-01-20 | Method of preparing photographic silver halide emulsions and emulsions prepared thereby |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3282700A (en) |
| FR (1) | FR1426437A (en) |
| GB (1) | GB1091342A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3531289A (en) * | 1966-12-02 | 1970-09-29 | Eastman Kodak Co | Silver halide photographic emulsions improved by new precipitation methods |
| JPS5847699B2 (en) * | 1973-12-18 | 1983-10-24 | 富士写真フイルム株式会社 | Halogen cover is very annoying |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1791053A (en) * | 1928-06-07 | 1931-02-03 | Austin o | |
| US2642361A (en) * | 1949-07-20 | 1953-06-16 | Eastman Kodak Co | Photographic silver halide emulsions sensitized with water-insoluble gold compounds |
| US3189454A (en) * | 1961-10-16 | 1965-06-15 | Eastman Kodak Co | Method of photographic development and fixing |
-
1964
- 1964-01-20 US US338634A patent/US3282700A/en not_active Expired - Lifetime
-
1965
- 1965-01-18 FR FR2280A patent/FR1426437A/en not_active Expired
- 1965-01-20 GB GB2530/65A patent/GB1091342A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3282700A (en) | 1966-11-01 |
| FR1426437A (en) | 1966-01-28 |
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