GB1244878A - Photographic silver halide emulsion with increased sensitivity - Google Patents
Photographic silver halide emulsion with increased sensitivityInfo
- Publication number
- GB1244878A GB1244878A GB61177/68A GB6117768A GB1244878A GB 1244878 A GB1244878 A GB 1244878A GB 61177/68 A GB61177/68 A GB 61177/68A GB 6117768 A GB6117768 A GB 6117768A GB 1244878 A GB1244878 A GB 1244878A
- Authority
- GB
- United Kingdom
- Prior art keywords
- group
- formula
- silver halide
- integer
- sensitizer
- 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
-
- 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
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)
Abstract
1,244,878. Photographic chemically sensitized silver halide emulsions. AGFA-GEVAERT A.G. Dec.23, 1968 [Dec.22, 1967], No.61177/68. Heading G2C. A light-sensitive silver halide emulsion contains a chemical sensitizer of the following formula, which increases the sensitivity of the emulsion: wherein Z represents an oxygen atom or the group NR<SP>II</SP> ; R<SP>I</SP> represents a saturated or olefinically unsaturated aliphatic group containing up to 18 carbon atoms; X is a methylene group or a dialkylsilyl group; and R<SP>II</SP> represents an alkyl group containing up to 6 carbon atoms, which sensitizer contains at least one dialkylsilyl group. R<SP>I</SP> may also be substituted with one or more photographically acceptable substituents, e.g. with hydroxyl, amino, alkylamino, dialkylamino, cyano, alkylthio, alkoxy, trialkylsilyl or trialkylsilyloxy groups. Many examples of such sensitizers are given. The emulsion may also contain a polyalkylene oxide sensitizer of the formula RO-[CH 2 CH 2 O] n -R wherein R is H, alkyl, acyl or aryl and n is an integer of between 8 and 200 or of the formula:- wherein R 1 is H or an alkylene oxide chain with 3 to 100 alkylene oxide units; m is an integer of 3 to 100 and y is an integer of 1 to 10, or an 'onium compound of the formula: The silicon-containing chemical sensitizers cause little or no fogging. Certain synergistic combinations of sensitizers are illustrated in Table 2 of the Specification.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19671597511 DE1597511A1 (en) | 1967-12-22 | 1967-12-22 | Photographic silver halide emulsion with increased sensitivity |
| DEA0057779 | 1967-12-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1244878A true GB1244878A (en) | 1971-09-02 |
Family
ID=25753437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB61177/68A Expired GB1244878A (en) | 1967-12-22 | 1968-12-23 | Photographic silver halide emulsion with increased sensitivity |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3615631A (en) |
| BE (1) | BE725624A (en) |
| CH (1) | CH500508A (en) |
| DE (1) | DE1597511A1 (en) |
| FR (1) | FR1598075A (en) |
| GB (1) | GB1244878A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52138123A (en) * | 1976-02-05 | 1977-11-18 | Fuji Photo Film Co Ltd | Silver halide photographic emulsion spectrally sensitized by merocyaning dye |
-
1967
- 1967-12-22 DE DE19671597511 patent/DE1597511A1/en active Pending
-
1968
- 1968-12-16 CH CH1869968A patent/CH500508A/en not_active IP Right Cessation
- 1968-12-18 US US784909A patent/US3615631A/en not_active Expired - Lifetime
- 1968-12-18 BE BE725624D patent/BE725624A/xx unknown
- 1968-12-23 FR FR1598075D patent/FR1598075A/fr not_active Expired
- 1968-12-23 GB GB61177/68A patent/GB1244878A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1598075A (en) | 1970-06-29 |
| DE1597511A1 (en) | 1970-05-14 |
| US3615631A (en) | 1971-10-26 |
| BE725624A (en) | 1969-06-18 |
| CH500508A (en) | 1970-12-15 |
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