US1696830A - Light-sensitive silver halide emulsions and process of making the same - Google Patents
Light-sensitive silver halide emulsions and process of making the same Download PDFInfo
- Publication number
- US1696830A US1696830A US191928A US19192827A US1696830A US 1696830 A US1696830 A US 1696830A US 191928 A US191928 A US 191928A US 19192827 A US19192827 A US 19192827A US 1696830 A US1696830 A US 1696830A
- Authority
- US
- United States
- Prior art keywords
- silver halide
- sensitive silver
- halide emulsions
- making
- light
- 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 - Lifetime
Links
- 239000000839 emulsion Substances 0.000 title description 26
- 229910052709 silver Inorganic materials 0.000 title description 12
- 239000004332 silver Substances 0.000 title description 11
- -1 silver halide Chemical class 0.000 title description 11
- 238000000034 method Methods 0.000 title description 9
- 229920000159 gelatin Polymers 0.000 description 12
- 235000019322 gelatine Nutrition 0.000 description 12
- 108010010803 Gelatin Proteins 0.000 description 11
- 235000011852 gelatine desserts Nutrition 0.000 description 11
- 239000008273 gelatin Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 239000000084 colloidal system Substances 0.000 description 4
- 230000005070 ripening Effects 0.000 description 4
- 238000007792 addition Methods 0.000 description 3
- 235000018102 proteins Nutrition 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- 102000004169 proteins and genes Human genes 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- RAXXELZNTBOGNW-UHFFFAOYSA-N 1H-imidazole Chemical compound C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 1
- HNDVDQJCIGZPNO-YFKPBYRVSA-N L-histidine Chemical compound OC(=O)[C@@H](N)CC1=CN=CN1 HNDVDQJCIGZPNO-YFKPBYRVSA-N 0.000 description 1
- 241001208007 Procas Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical class [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000007857 degradation product Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 229960002885 histidine Drugs 0.000 description 1
- HNDVDQJCIGZPNO-UHFFFAOYSA-N histidine Natural products OC(=O)C(N)CC1=CN=CN1 HNDVDQJCIGZPNO-UHFFFAOYSA-N 0.000 description 1
- 235000014304 histidine Nutrition 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 125000001841 imino group Chemical group [H]N=* 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003405 preventing effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003378 silver Chemical group 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 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
Definitions
- rmnn mm or sramnne, m1) ammo wnnnr, or DESSAU, GERMANY, ASSIGN- ons T071. e. rmnnmnnsrnm nx'rmnensnnnscm'r, or FRANKFORT-ON-THE- MAIN, GER-Hm.
- the present invention relates to light sensitive silver halide emulsions and to a procass of making the same. Its object is to obtain valuable lightsensitive emulsions from foggy gelatines.
- the ripening process is very important in the manufacture of sensitive silver halide emulsions.
- the sensitiveness attained thereby depends to a great extent on the qualities of the colloid employed, for instance of the gelatin.
- the ripening capacity of a gelatin may be enhanced by adding substances, the nature and quantity of which depends upon the kind of emulsifying process which is used. These substances are sulphur compounds of a certain constitution, ammonia and others. In this way it is possible to make use of badly ripening gelatin for producing emulsions of the highest sensitivity.
- gelatin cannot be used for making sensitive silver halide emulsions because they produce fog before the emulsion has ripened to the sensitiveness desired. Such gelatins have not been applicable hitherto for the production of photographic silver halide emulsion, or they have had to be specially treated before use.
- such unsuitable gelatins may be used for making clear emulsions of the highest sensitiveness by adding to the emulsion or to the materials from which it is made, one or more substances which prevent fogging.
- Appropriate additions for this purpose are certain products of decomposition of proteins which are sometimes incorporated in small quantity in the gelatin, e. g. hist-idine. Investigation has shown that the tendency towards fogging of many sorts of gelatin in the ripening process is due to the complete or partial lack of these substances which prevent fog.
- the gelatin may be enriched during its manufacture in its content of the efficacious substances or these latter may be produced separately in order to serve as additions to the colloid before the emulsion is made or to the emulsion in any step of its manufacture or when it is poured on to the support of the emulsionlayer.
- a sensitive silver halide emulsion manufactured according to one of the known processes with a certain sort of gelatin showed considerable fog and little sensitivity.
- 0.1-0.4 per cent of nitrobenziminazole a clear and highly sensitive emulsion is obtained.
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)
- Peptides Or Proteins (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI0028122 | 1926-05-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1696830A true US1696830A (en) | 1928-12-25 |
Family
ID=7186956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US191928A Expired - Lifetime US1696830A (en) | 1926-05-20 | 1927-05-16 | Light-sensitive silver halide emulsions and process of making the same |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1696830A (en, 2012) |
| BE (1) | BE342528A (en, 2012) |
| GB (1) | GB271475A (en, 2012) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2699391A (en) * | 1950-01-11 | 1955-01-11 | Gen Aniline & Film Corp | Synthetic polypeptides of alpha-amino acids as restrainers in photographic emulsions |
| US3086863A (en) * | 1959-01-21 | 1963-04-23 | Du Pont | Photographic emulsions containing imidazoles |
| US4298683A (en) * | 1977-12-29 | 1981-11-03 | Agfa-Gevaert Aktiengesellschaft | Light-sensitive photographic material |
| US4469784A (en) * | 1981-09-28 | 1984-09-04 | Fuji Photo Film Co., Ltd. | Silver halide emulsions |
| US4643966A (en) * | 1985-09-03 | 1987-02-17 | Eastman Kodak Company | Emulsions and photographic elements containing ruffled silver halide grains |
| EP0215612A2 (en) | 1985-09-03 | 1987-03-25 | EASTMAN KODAK COMPANY (a New Jersey corporation) | Silver halide photographic emulsions with novel grain faces (5) |
| US4680256A (en) * | 1985-09-03 | 1987-07-14 | Eastman Kodak Company | Emulsions and photographic elements containing silver halide grains having trisoctahedra crystal faces |
| US4680254A (en) * | 1985-09-03 | 1987-07-14 | Eastman Kodak Company | Emulsions and photographic elements containing silver halide grains having hexoctamedral crystal faces |
| EP0234090A3 (en) * | 1985-09-03 | 1988-11-30 | Eastman Kodak Company | Silver halide photographic emulsions with novel grain faces (1) |
| EP0233396A3 (en) * | 1985-09-03 | 1988-12-28 | Eastman Kodak Company | Silver halide photographic emulsions with novel grain faces (4) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3147118A (en) * | 1961-03-14 | 1964-09-01 | Gen Aniline & Film Corp | Fog reduction in photographic silver halide emulsions |
-
0
- BE BE342528D patent/BE342528A/xx unknown
-
1927
- 1927-05-16 US US191928A patent/US1696830A/en not_active Expired - Lifetime
- 1927-05-17 GB GB13274/27A patent/GB271475A/en not_active Expired
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2699391A (en) * | 1950-01-11 | 1955-01-11 | Gen Aniline & Film Corp | Synthetic polypeptides of alpha-amino acids as restrainers in photographic emulsions |
| US3086863A (en) * | 1959-01-21 | 1963-04-23 | Du Pont | Photographic emulsions containing imidazoles |
| US4298683A (en) * | 1977-12-29 | 1981-11-03 | Agfa-Gevaert Aktiengesellschaft | Light-sensitive photographic material |
| US4469784A (en) * | 1981-09-28 | 1984-09-04 | Fuji Photo Film Co., Ltd. | Silver halide emulsions |
| US4643966A (en) * | 1985-09-03 | 1987-02-17 | Eastman Kodak Company | Emulsions and photographic elements containing ruffled silver halide grains |
| EP0215612A2 (en) | 1985-09-03 | 1987-03-25 | EASTMAN KODAK COMPANY (a New Jersey corporation) | Silver halide photographic emulsions with novel grain faces (5) |
| US4680256A (en) * | 1985-09-03 | 1987-07-14 | Eastman Kodak Company | Emulsions and photographic elements containing silver halide grains having trisoctahedra crystal faces |
| US4680254A (en) * | 1985-09-03 | 1987-07-14 | Eastman Kodak Company | Emulsions and photographic elements containing silver halide grains having hexoctamedral crystal faces |
| EP0215612A3 (en) * | 1985-09-03 | 1988-11-30 | Eastman Kodak Company | Silver halide photographic emulsions with novel grain faces (5) |
| EP0234090A3 (en) * | 1985-09-03 | 1988-11-30 | Eastman Kodak Company | Silver halide photographic emulsions with novel grain faces (1) |
| EP0233396A3 (en) * | 1985-09-03 | 1988-12-28 | Eastman Kodak Company | Silver halide photographic emulsions with novel grain faces (4) |
Also Published As
| Publication number | Publication date |
|---|---|
| GB271475A (en) | 1927-11-10 |
| BE342528A (en, 2012) |
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