GB472639A - Improvements in and relating to the preparation of photographic emulsions - Google Patents
Improvements in and relating to the preparation of photographic emulsionsInfo
- Publication number
- GB472639A GB472639A GB8939/36A GB893936A GB472639A GB 472639 A GB472639 A GB 472639A GB 8939/36 A GB8939/36 A GB 8939/36A GB 893936 A GB893936 A GB 893936A GB 472639 A GB472639 A GB 472639A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ammonia
- precipitate
- gelatin
- added
- emulsified
- 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 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 14
- 108010010803 Gelatin Proteins 0.000 abstract 7
- 229910021529 ammonia Inorganic materials 0.000 abstract 7
- 229920000159 gelatin Polymers 0.000 abstract 7
- 239000008273 gelatin Substances 0.000 abstract 7
- 235000019322 gelatine Nutrition 0.000 abstract 7
- 235000011852 gelatine desserts Nutrition 0.000 abstract 7
- 239000002244 precipitate Substances 0.000 abstract 7
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 abstract 6
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 abstract 6
- 239000000203 mixture Substances 0.000 abstract 4
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 abstract 4
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 abstract 4
- 229910052709 silver Inorganic materials 0.000 abstract 3
- 239000004332 silver Substances 0.000 abstract 3
- -1 silver halide Chemical class 0.000 abstract 3
- 238000010908 decantation Methods 0.000 abstract 2
- 229910001961 silver nitrate Inorganic materials 0.000 abstract 2
- 239000011230 binding agent Substances 0.000 abstract 1
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 230000001804 emulsifying effect Effects 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 230000005070 ripening Effects 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 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
- G03C1/015—Apparatus or processes for the preparation of emulsions
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Colloid Chemistry (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE472639X | 1935-04-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB472639A true GB472639A (en) | 1937-09-27 |
Family
ID=6541460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8939/36A Expired GB472639A (en) | 1935-04-05 | 1936-03-25 | Improvements in and relating to the preparation of photographic emulsions |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2146938A (enrdf_load_stackoverflow) |
| BE (1) | BE414540A (enrdf_load_stackoverflow) |
| FR (1) | FR803585A (enrdf_load_stackoverflow) |
| GB (1) | GB472639A (enrdf_load_stackoverflow) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2976149A (en) * | 1956-10-30 | 1961-03-21 | Repro Design & Equipment Compa | Direct positive photographic emulsion |
| US2982652A (en) * | 1957-06-18 | 1961-05-02 | Gevaert Photo Prod Nv | Preparation of photographic emulsions |
| US3511662A (en) * | 1965-10-28 | 1970-05-12 | Eastman Kodak Co | Method of preparing silver halide grains having high internal sensitivity |
| DE3539845A1 (de) * | 1985-11-09 | 1987-05-14 | Agfa Gevaert Ag | Verfahren und vorrichtung zur herstellung fotografischer silberhalogenidemulsionen |
| DE4233714A1 (de) * | 1992-10-07 | 1994-04-14 | Agfa Gevaert Ag | Verfahren zur Herstellung von Silberhalogenidemulsionen |
-
0
- BE BE414540D patent/BE414540A/xx unknown
-
1936
- 1936-03-18 US US69520A patent/US2146938A/en not_active Expired - Lifetime
- 1936-03-20 FR FR803585D patent/FR803585A/fr not_active Expired
- 1936-03-25 GB GB8939/36A patent/GB472639A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2146938A (en) | 1939-02-14 |
| FR803585A (fr) | 1936-10-03 |
| BE414540A (enrdf_load_stackoverflow) |
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