GB1283234A - Photographic direct-positive silver halide emulsions - Google Patents
Photographic direct-positive silver halide emulsionsInfo
- Publication number
- GB1283234A GB1283234A GB55640/69A GB5564069A GB1283234A GB 1283234 A GB1283234 A GB 1283234A GB 55640/69 A GB55640/69 A GB 55640/69A GB 5564069 A GB5564069 A GB 5564069A GB 1283234 A GB1283234 A GB 1283234A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver halide
- dye
- alkyl
- emulsion
- direct
- 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 7
- 229910052709 silver Inorganic materials 0.000 title abstract 5
- 239000004332 silver Substances 0.000 title abstract 5
- -1 silver halide Chemical class 0.000 title abstract 5
- 239000000975 dye Substances 0.000 abstract 7
- 125000000217 alkyl group Chemical group 0.000 abstract 3
- 150000003839 salts Chemical class 0.000 abstract 3
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 125000001434 methanylylidene group Chemical group [H]C#[*] 0.000 abstract 2
- 230000001235 sensitizing effect Effects 0.000 abstract 2
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical group C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 abstract 1
- 239000005977 Ethylene Chemical group 0.000 abstract 1
- 239000001828 Gelatine Substances 0.000 abstract 1
- SJOOOZPMQAWAOP-UHFFFAOYSA-N [Ag].BrCl Chemical compound [Ag].BrCl SJOOOZPMQAWAOP-UHFFFAOYSA-N 0.000 abstract 1
- 239000000370 acceptor Substances 0.000 abstract 1
- 125000003545 alkoxy group Chemical group 0.000 abstract 1
- 150000001450 anions Chemical class 0.000 abstract 1
- 125000003710 aryl alkyl group Chemical group 0.000 abstract 1
- 125000003118 aryl group Chemical group 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 150000001721 carbon Chemical group 0.000 abstract 1
- 125000000753 cycloalkyl group Chemical group 0.000 abstract 1
- 125000005678 ethenylene group Chemical group [H]C([*:1])=C([H])[*:2] 0.000 abstract 1
- 229920000159 gelatin Polymers 0.000 abstract 1
- 235000019322 gelatine Nutrition 0.000 abstract 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 1
- 229910052737 gold Inorganic materials 0.000 abstract 1
- 239000010931 gold Substances 0.000 abstract 1
- 229910052736 halogen Inorganic materials 0.000 abstract 1
- 150000002367 halogens Chemical class 0.000 abstract 1
- DZVCFNFOPIZQKX-LTHRDKTGSA-M merocyanine Chemical compound [Na+].O=C1N(CCCC)C(=O)N(CCCC)C(=O)C1=C\C=C\C=C/1N(CCCS([O-])(=O)=O)C2=CC=CC=C2O\1 DZVCFNFOPIZQKX-LTHRDKTGSA-M 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- JUJWROOIHBZHMG-UHFFFAOYSA-O pyridinium Chemical compound C1=CC=[NH+]C=C1 JUJWROOIHBZHMG-UHFFFAOYSA-O 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
- 230000003595 spectral effect Effects 0.000 abstract 1
- 125000000547 substituted alkyl group Chemical group 0.000 abstract 1
- ANRHNWWPFJCPAZ-UHFFFAOYSA-M thionine Chemical compound [Cl-].C1=CC(N)=CC2=[S+]C3=CC(N)=CC=C3N=C21 ANRHNWWPFJCPAZ-UHFFFAOYSA-M 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
- G03C1/485—Direct positive emulsions
- G03C1/48515—Direct positive emulsions prefogged
- G03C1/48523—Direct positive emulsions prefogged characterised by the desensitiser
- G03C1/4853—Direct positive emulsions prefogged characterised by the desensitiser polymethine dyes
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Plural Heterocyclic Compounds (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Abstract
1283234 Photographic direct-positive silver halide emulsions EASTMAN KODAK CO 13 Nov 1969 [15 Nov 1968] 55640/69 Heading G2C A direct-positive photographic silver halide emulsion is spectrally sensitized with a sensitizing methine or azacyanine dye (i.e. a dye which causes less than 80% loss in blue speed when added to a negative-type developing out gelatine silver chlorobromide emulsion containing 40 mole per cent chloride and 60 mole per cent bromide, at a concentration of 0À01-0À2 g dye per mole of silver halide, when the emulsion is exposed and developed for 3 minutes in (Registered Trade Mark) "Kodak" developer D-19 (composition given) at 20 C.) and a bipyridinium salt comprising two pyridinium nuclei joined by a linkage attached to a carbon atom of each nucleus. The methine dye may be a cyanine, merocyanine or hemicyanine dye. The bipyridinium salt preferably has one of the formulae:- wherein R 1 and R 2 are each alkyl, substituted alkyl, cycloalkyl, aralkyl or aryl; R 3 and R 4 are each H, or halogen, or an alkyl or alkoxy group having 1-4C; R 5 and R 6 are each H or 1-4C alkyl; R is vinylene or ethylene; X<SP>-</SP> is an anion; n is O or 1; and m is 2, 3 or 4. Many examples of sensitizing dyes are listed. The silver halide may be fogged with both a reduction fogging agent and a gold fogging agent, and the emulsion may contain a colour coupler. The bipyridinium salts are electron acceptors and with the dyes produce, by appropriate selections, many direct-positive emulsions having spectral sensitivity tailored to requirement. Specification 940152 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US77626268A | 1968-11-15 | 1968-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1283234A true GB1283234A (en) | 1972-07-26 |
Family
ID=25106903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB55640/69A Expired GB1283234A (en) | 1968-11-15 | 1969-11-13 | Photographic direct-positive silver halide emulsions |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3583870A (en) |
| JP (1) | JPS4813059B1 (en) |
| BE (1) | BE741748A (en) |
| BR (1) | BR6914032D0 (en) |
| CA (1) | CA927176A (en) |
| CH (1) | CH526795A (en) |
| FR (1) | FR2023388A1 (en) |
| GB (1) | GB1283234A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3904637A (en) * | 1972-04-19 | 1975-09-09 | Eastman Kodak Co | 7'a'h,8'a'h-bisbenzothiazolo(3,2-a;-3',2'-a)pyrano (3,2-c;5,6-c'+9 dipyridinium compounds and related derivatives thereof |
| US4207103A (en) * | 1978-06-26 | 1980-06-10 | Eastman Kodak Company | Photographic print-out silver halide process |
| JPS59142541A (en) * | 1983-02-02 | 1984-08-15 | Fuji Photo Film Co Ltd | Photographic silver halide emulsion |
| JPS59188641A (en) * | 1983-04-11 | 1984-10-26 | Fuji Photo Film Co Ltd | Silver halide photographic emulsion |
| US4983508A (en) * | 1987-11-18 | 1991-01-08 | Fuji Photo Film Co., Ltd. | Method for manufacturing a light-sensitive silver halide emulsion |
| JPH03137632A (en) * | 1989-10-24 | 1991-06-12 | Fuji Photo Film Co Ltd | Preparation of photographic silver halide emulsion |
| US5536634A (en) * | 1994-09-30 | 1996-07-16 | Eastman Kodak Company | Silver halide emulsions spectrally sensitized in the presence of low N-alkyl pyridinium ions |
| CN104860875A (en) * | 2015-05-14 | 2015-08-26 | 上海大学 | Substituent acetophenone group purpurine derivative of high-sensitivity color changing material and synthetic method thereof |
| CN108373444A (en) * | 2018-03-09 | 2018-08-07 | 上海大学 | Fluorescence viologen derivative and its application and preparation method |
-
1968
- 1968-11-15 US US776262A patent/US3583870A/en not_active Expired - Lifetime
-
1969
- 1969-10-17 CA CA065139A patent/CA927176A/en not_active Expired
- 1969-11-10 BR BR214032/69A patent/BR6914032D0/en unknown
- 1969-11-13 GB GB55640/69A patent/GB1283234A/en not_active Expired
- 1969-11-14 BE BE741748D patent/BE741748A/xx unknown
- 1969-11-14 CH CH1698669A patent/CH526795A/en not_active IP Right Cessation
- 1969-11-14 FR FR6939104A patent/FR2023388A1/fr not_active Withdrawn
- 1969-11-15 JP JP44091356A patent/JPS4813059B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| BE741748A (en) | 1970-04-16 |
| BR6914032D0 (en) | 1973-01-18 |
| US3583870A (en) | 1971-06-08 |
| CA927176A (en) | 1973-05-29 |
| FR2023388A1 (en) | 1970-08-21 |
| CH526795A (en) | 1972-08-15 |
| JPS4813059B1 (en) | 1973-04-25 |
| DE1957187A1 (en) | 1970-10-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |