GB1379290A - Direct-positive silver halide photographic emulsion containing a dimethinecyanine dye - Google Patents
Direct-positive silver halide photographic emulsion containing a dimethinecyanine dyeInfo
- Publication number
- GB1379290A GB1379290A GB5955872A GB5955872A GB1379290A GB 1379290 A GB1379290 A GB 1379290A GB 5955872 A GB5955872 A GB 5955872A GB 5955872 A GB5955872 A GB 5955872A GB 1379290 A GB1379290 A GB 1379290A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dimethinecyanine
- dye
- direct
- substituted
- silver halide
- 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
- G03C1/485—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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Plural Heterocyclic Compounds (AREA)
Abstract
1379290 Dimethinecyanine dyes FUJI PHOTO FILM CO Ltd 22 Dec 1972 [24 Dec 1971] 59558/72 Heading C4P [Also in Division G2] Dimethinecyanine dyes of the formula where R<SP>1</SP> is H or NO 2 ; R<SP>2</SP> is H, Cl, 1-8C alkyl, carboxyl or (1-4C alkoxy)-carbonyl; R<SP>3</SP> is H, 1-6C alkyl which may be substituted or aryl.; R<SP>4</SP> is 1-6C alkyl which may be substituted or aryl; L<SP>1</SP> and L<SP>2</SP> are each optionally substituted methine; R<SP>4</SP> and L<SP>2</SP> may be linked through a methylene group; m and n are each 0 or 1, n being 0 if the dye has a betaine structure and 1 otherwise; X<SP>(-)</SP> is an anion; and Z completes a non-metallic heterocyclic nucleus, e.g. 3,3- dialkylindolenine, imidazo - [4,5,b].- quinoxaline, benzothiazole, benzoselenazole, benzoxazole, quinoline, naphthoxazole, and benzimidazole, L<SP>2</SP> may be substituted by #-methoxyethyl. 21 Dyes of the above formula are listed.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP93572A JPS5437490B2 (en) | 1971-12-24 | 1971-12-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1379290A true GB1379290A (en) | 1975-01-02 |
Family
ID=11487520
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5955872A Expired GB1379290A (en) | 1971-12-24 | 1972-12-22 | Direct-positive silver halide photographic emulsion containing a dimethinecyanine dye |
Country Status (5)
Country | Link |
---|---|
US (1) | US3832184A (en) |
JP (1) | JPS5437490B2 (en) |
DE (1) | DE2263529A1 (en) |
FR (1) | FR2164806B1 (en) |
GB (1) | GB1379290A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5547373B2 (en) * | 1972-12-19 | 1980-11-29 | ||
JPS5647544B2 (en) * | 1973-03-27 | 1981-11-10 | ||
CH601558A5 (en) * | 1976-03-18 | 1978-07-14 | Ciba Geigy Ag | |
JPS5321601A (en) * | 1976-08-10 | 1978-02-28 | Mitsubishi Paper Mills Ltd | Improved offset printing plate |
US4840889A (en) * | 1986-09-11 | 1989-06-20 | Konishiroku Photo Industry Co., Ltd. | High whiteness silver halide photographic paper for direct positives |
US6703191B1 (en) * | 2003-01-14 | 2004-03-09 | Eastman Kodak Company | Thermally developable emulsions and materials containing tirazine-thione compounds |
JP6777401B2 (en) * | 2016-02-12 | 2020-10-28 | 住友化学株式会社 | Optical film |
-
1971
- 1971-12-24 JP JP93572A patent/JPS5437490B2/ja not_active Expired
-
1972
- 1972-12-21 FR FR7245682A patent/FR2164806B1/fr not_active Expired
- 1972-12-22 GB GB5955872A patent/GB1379290A/en not_active Expired
- 1972-12-26 US US00318047A patent/US3832184A/en not_active Expired - Lifetime
- 1972-12-27 DE DE2263529A patent/DE2263529A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS5437490B2 (en) | 1979-11-15 |
JPS4871223A (en) | 1973-09-27 |
FR2164806A1 (en) | 1973-08-03 |
US3832184A (en) | 1974-08-27 |
DE2263529A1 (en) | 1973-07-05 |
FR2164806B1 (en) | 1975-03-28 |
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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 |