GB1256393A - Increasing the sensitivity of silver bromide emulsions - Google Patents
Increasing the sensitivity of silver bromide emulsionsInfo
- Publication number
- GB1256393A GB1256393A GB21930/69A GB2193069A GB1256393A GB 1256393 A GB1256393 A GB 1256393A GB 21930/69 A GB21930/69 A GB 21930/69A GB 2193069 A GB2193069 A GB 2193069A GB 1256393 A GB1256393 A GB 1256393A
- Authority
- GB
- United Kingdom
- Prior art keywords
- group
- silver bromide
- substituted
- aryl
- sensitivity
- 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
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 title abstract 5
- 230000035945 sensitivity Effects 0.000 title abstract 3
- 125000000217 alkyl group Chemical group 0.000 abstract 4
- 125000003118 aryl group Chemical group 0.000 abstract 4
- 125000002252 acyl group Chemical group 0.000 abstract 3
- 125000003917 carbamoyl group Chemical group [H]N([H])C(*)=O 0.000 abstract 3
- 150000001875 compounds Chemical class 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 3
- 125000004432 carbon atom Chemical group C* 0.000 abstract 2
- -1 cyano, carboxyl Chemical group 0.000 abstract 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 abstract 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 abstract 2
- JKFYKCYQEWQPTM-UHFFFAOYSA-N 2-azaniumyl-2-(4-fluorophenyl)acetate Chemical compound OC(=O)C(N)C1=CC=C(F)C=C1 JKFYKCYQEWQPTM-UHFFFAOYSA-N 0.000 abstract 1
- 229910021612 Silver iodide Inorganic materials 0.000 abstract 1
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 abstract 1
- 125000003545 alkoxy group Chemical group 0.000 abstract 1
- 125000003368 amide group Chemical group 0.000 abstract 1
- 125000003277 amino group Chemical group 0.000 abstract 1
- 125000003710 aryl alkyl group Chemical group 0.000 abstract 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- 229940045105 silver iodide Drugs 0.000 abstract 1
- BRNULMACUQOKMR-UHFFFAOYSA-N thiomorpholine Chemical compound C1CSCCN1 BRNULMACUQOKMR-UHFFFAOYSA-N 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
- G03C1/08—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
- G03C1/005—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
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)
- Plural Heterocyclic Compounds (AREA)
Abstract
1,256,393. Increasing the sensitivity of photographic silver bromide emulsions. AGFA-GEVAERT A.G. April 30, 1969 [May 6, 1968], No.21930/69. Heading G2C. A process for the production of photographic images by exposure and development of photographic materials which contain at least one silver bromide emulsion layer comprises developing the exposed material in effective contact with a 1,4-thiazane of the general formula:- in which R is a hydrogen atom or an alkyl group containing up to 5 carbon atoms and R<SP>1</SP> represents (1) a hydrogen atom, (2) a linear or branched alkyl group containing up to 12 carbonatoms which may be substituted with phenyl, OH, cyano, carboxyl, esterified carboxyl or alkoxy, (3) an aryl group, (4) an acyl group, (5) a carbamoyl group which may be substituted on the amide group with alkyl, aralkyl or aryl or (6) an amino group, which may be substituted with alkyl, aryl, acyl or carbamoyl, the carbamoyl group being optionally alkylated or phenylated. The acyl group (4) is preferably derived from an aliphatic carboxylic acid having up to 5 carbons. The aryl group (3) is preferably a substituted or unsubstituted phenyl group. The silver bromide emulsion may contain up to 10 mole % of silver iodide. R is preferably H or methyl. Many examples of these compounds are listed. The compound may be present in the developing solution or in the material. 3 mg to 20 g of the compound per mole of silver bromide are preferably present in the emulsion. These silver halide emulsions have increased general sensitivity without concomitant increase in fog level.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681772375 DE1772375A1 (en) | 1968-05-06 | 1968-05-06 | Silver bromide photographic emulsion with increased sensitivity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1256393A true GB1256393A (en) | 1971-12-08 |
Family
ID=5701225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21930/69A Expired GB1256393A (en) | 1968-05-06 | 1969-04-30 | Increasing the sensitivity of silver bromide emulsions |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3617280A (en) |
| BE (1) | BE732547A (en) |
| CH (1) | CH526794A (en) |
| DE (1) | DE1772375A1 (en) |
| FR (1) | FR2007937A1 (en) |
| GB (1) | GB1256393A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6047576B2 (en) | 1980-05-07 | 1985-10-22 | 富士写真フイルム株式会社 | Silver halide photographic material |
| US4419443A (en) * | 1980-11-11 | 1983-12-06 | Fuji Photo Film Co., Ltd. | Silver halide photographic light-sensitive material |
| JPS5969754A (en) | 1982-10-14 | 1984-04-20 | Fuji Photo Film Co Ltd | Color photosensitive silver halide material |
| JPS60143331A (en) | 1983-12-29 | 1985-07-29 | Fuji Photo Film Co Ltd | Silver halide photosensitive material |
| EP0209118B1 (en) | 1985-07-17 | 1991-10-23 | Konica Corporation | Silver halide photographic material |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3166539A (en) * | 1948-12-31 | 1965-01-19 | Degussa | Polymerization of acrylate mixtures of polymer/monomer using a catalyst system of a tertiary-amine and a quadrivalent sulfur compound |
| BE592259A (en) * | 1959-06-26 | |||
| BE610628A (en) * | 1960-11-14 | |||
| BE625542A (en) * | 1961-12-01 | |||
| GB1054125A (en) * | 1963-04-22 | |||
| GB1062884A (en) * | 1964-06-15 | 1967-03-22 | Agfa Gevaert Nv | Photochemical cross-linding of polymers |
-
1968
- 1968-05-06 DE DE19681772375 patent/DE1772375A1/en active Pending
-
1969
- 1969-04-22 US US818381A patent/US3617280A/en not_active Expired - Lifetime
- 1969-04-24 CH CH623569A patent/CH526794A/en not_active IP Right Cessation
- 1969-04-30 GB GB21930/69A patent/GB1256393A/en not_active Expired
- 1969-05-06 FR FR6914464A patent/FR2007937A1/fr not_active Withdrawn
- 1969-05-06 BE BE732547D patent/BE732547A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1772375A1 (en) | 1971-03-18 |
| US3617280A (en) | 1971-11-02 |
| CH526794A (en) | 1972-08-15 |
| FR2007937A1 (en) | 1970-01-16 |
| BE732547A (en) | 1969-11-06 |
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