GB1321881A - Optical supersensitisation of silver halide emulsions - Google Patents
Optical supersensitisation of silver halide emulsionsInfo
- Publication number
- GB1321881A GB1321881A GB1321881DA GB1321881A GB 1321881 A GB1321881 A GB 1321881A GB 1321881D A GB1321881D A GB 1321881DA GB 1321881 A GB1321881 A GB 1321881A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dye
- silver halide
- alkyl
- sulphoalkyl
- carboxyalkyl
- 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
- -1 silver halide Chemical class 0.000 title abstract 4
- 229910052709 silver Inorganic materials 0.000 title abstract 3
- 239000004332 silver Substances 0.000 title abstract 3
- 230000003287 optical effect Effects 0.000 title 1
- 125000000217 alkyl group Chemical group 0.000 abstract 3
- 150000001450 anions Chemical group 0.000 abstract 3
- 125000004181 carboxyalkyl group Chemical group 0.000 abstract 3
- 125000004183 alkoxy alkyl group Chemical group 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 230000001235 sensitizing effect Effects 0.000 abstract 1
- 238000001228 spectrum Methods 0.000 abstract 1
- 125000000547 substituted alkyl group Chemical group 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
- G03C1/28—Sensitivity-increasing substances together with supersensitising substances
- G03C1/29—Sensitivity-increasing substances together with supersensitising substances the supersensitising mixture being solely composed of dyes ; Combination of dyes, even if the supersensitising effect is not explicitly disclosed
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)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Abstract
1321881 Super sensitizing silver halide emulsions ILFORD Ltd 20 May 1971 [4 June 1970] 27073/70 Heading G2C A photographic silver halide emulsion is sensitized to the green region of the spectrum with a super-sensitizing combination comprising a dye of the formula:- in which R 1 and R 3 each represent H or CH 3 R 2 is sulphoalkyl or carboxyalkyl, R 4 is alkyl (1-4c), X is an anion and p is 1 or 2, together with a dye of the formula:- in which R 6 is carboxyalkyl or sulphoalkyl, R 7 is CH 3 or C 2 H 5 , R 8 is alkyl (1-4c), Y is an anion, and q is 1 or 2, and with a symmetrical bisbenzoxazole dye having the formula:- in which R 5 is alkyl or substituted alkyl, e.g. sulphoalkyl, carboxyalkyl and alkoxyalkyl, Z is an anion, and r is 1 or 2, when p, q or r is 1 an intra-molecular salt of the dye being formed. The dye combination is resistant to stripping by a magenta colour coupler which may be present in the emulsion.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2707370 | 1970-06-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1321881A true GB1321881A (en) | 1973-07-04 |
Family
ID=10253723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1321881D Expired GB1321881A (en) | 1970-06-04 | 1970-06-04 | Optical supersensitisation of silver halide emulsions |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE768089A (en) |
| CH (1) | CH565390A5 (en) |
| DE (1) | DE2127671A1 (en) |
| FR (1) | FR2095898A5 (en) |
| GB (1) | GB1321881A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4945717A (en) * | 1972-09-04 | 1974-05-01 | Fuji Photo Film Co Ltd | Bunkozokan sareta harogenkaginshashinnyuzai |
-
1970
- 1970-06-04 GB GB1321881D patent/GB1321881A/en not_active Expired
-
1971
- 1971-06-01 CH CH803471A patent/CH565390A5/xx not_active IP Right Cessation
- 1971-06-03 DE DE19712127671 patent/DE2127671A1/en active Pending
- 1971-06-03 FR FR7120216A patent/FR2095898A5/fr not_active Expired
- 1971-06-04 BE BE768089A patent/BE768089A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2095898A5 (en) | 1972-02-11 |
| DE2127671A1 (en) | 1971-12-09 |
| CH565390A5 (en) | 1975-08-15 |
| BE768089A (en) | 1971-12-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |