GB1147697A - A process for increasing the sensitivity of photographic silver halide-gelatine emulsions - Google Patents
A process for increasing the sensitivity of photographic silver halide-gelatine emulsionsInfo
- Publication number
- GB1147697A GB1147697A GB5613566A GB5613566A GB1147697A GB 1147697 A GB1147697 A GB 1147697A GB 5613566 A GB5613566 A GB 5613566A GB 5613566 A GB5613566 A GB 5613566A GB 1147697 A GB1147697 A GB 1147697A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver halide
- alkyl
- sensitivity
- increasing
- hydrogen
- 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
- 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)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
Abstract
1,147,697. Photographic silver halide emulsions. FILMFABRIK WOLFEN, VEB. Dec.15, 1966, No.56135/66. Heading G2C. Photographic gelatino silver halide emulsions are sensitized by adding simultaneously auric trichloride and a compound of one of the formulae:- where X is -S- or -CH(R 3 )-, Y is -C(R 6 )(R 7 )- or -C(CH 2 ) n in which n is 2 to 7, R 1 is hydrogen or alkyl, R 2 and R 3 are each hydrogen, alkyl, -NH 2 or -CONH 2 , R 4 and R 5 are each hydrogen, alkyl, -NH 2 or -CH 2 R 8 , R 6 and R 7 are each alkyl and R 8 is halogen, -NH 2 , -OH, -SH, -NHR, -NR 2 , -OR or -SR in which R is alkyl. The silver halide is preferably silver chloride or silver bromochloride having at least 60 mol. per cent of silver chloride. A specified compound of the above formulae is
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5613566A GB1147697A (en) | 1966-12-15 | 1966-12-15 | A process for increasing the sensitivity of photographic silver halide-gelatine emulsions |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5613566A GB1147697A (en) | 1966-12-15 | 1966-12-15 | A process for increasing the sensitivity of photographic silver halide-gelatine emulsions |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1147697A true GB1147697A (en) | 1969-04-02 |
Family
ID=10475821
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5613566A Expired GB1147697A (en) | 1966-12-15 | 1966-12-15 | A process for increasing the sensitivity of photographic silver halide-gelatine emulsions |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1147697A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5677119A (en) * | 1996-10-29 | 1997-10-14 | Eastman Kodak Company | Silver halide photographic elements containing dithiolone 1 oxide compounds |
US5716773A (en) * | 1995-06-23 | 1998-02-10 | Minnesota Mining And Manufacturing Company | Alteration of image tone in black and white photographic materials |
US5914226A (en) * | 1997-09-11 | 1999-06-22 | Eastman Kodak Company | Silver halide emulsions with improved heat stability |
-
1966
- 1966-12-15 GB GB5613566A patent/GB1147697A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5716773A (en) * | 1995-06-23 | 1998-02-10 | Minnesota Mining And Manufacturing Company | Alteration of image tone in black and white photographic materials |
US5677119A (en) * | 1996-10-29 | 1997-10-14 | Eastman Kodak Company | Silver halide photographic elements containing dithiolone 1 oxide compounds |
US5914226A (en) * | 1997-09-11 | 1999-06-22 | Eastman Kodak Company | Silver halide emulsions with improved heat stability |
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