GB1426277A - Sensitive silver halide radiogrpahic materials - Google Patents
Sensitive silver halide radiogrpahic materialsInfo
- Publication number
- GB1426277A GB1426277A GB1900973A GB1900973A GB1426277A GB 1426277 A GB1426277 A GB 1426277A GB 1900973 A GB1900973 A GB 1900973A GB 1900973 A GB1900973 A GB 1900973A GB 1426277 A GB1426277 A GB 1426277A
- Authority
- GB
- United Kingdom
- Prior art keywords
- emulsion
- dye
- sensitive
- silver halide
- grains
- 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
- G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
- G03C1/825—Photosensitive materials characterised by the base or auxiliary layers characterised by antireflection means or visible-light filtering means, e.g. antihalation
- G03C1/83—Organic dyestuffs therefor
Abstract
1426277 Radiographic silver halide material EASTMAN KODAK CO 19 April 1973 [21 April 1972] 19009/73 Heading G2C A sensitive radiographic material comprises a support coated on one side with a layer of a blend of, or with adjacent layers of, a spectrally sensitized surface-sensitive photographic silver halide emulsion and an internally fogged internal image photographic silver halide emulsion containing, to reduce halation, at least one methine dye which is adsorbed to the grains and is removable from the material during processing, the silver halide compositions of the surface-sensitive and internally fogged emulsions being such that development of exposed surface-sensitive grains causes development of the adjacent internally fogged grains. The methine dye may be a complex cyanine of the Formula I:- a cyanine dye of the Formula II:- a merocyanine dye of the Formula III:- or a hemioxonol dye, providing a spectral sensitivity to radiation of wavelengths longer than 539 nm. where L, L 1 and L2 each is a methine group which may be substituted; R and R 2 are each alkyl, cycloalkyl or substituted alkyl; R 1 is alkyl, substituted alkyl or aralkyl or together with L2, 2- 3C alkylene; D and D, together complete a 4- thiazolidinone, 5-thiazolidinone, or 4-imidazo lidinone; n is 1, 2 or 3; Z, Z', Z 1 and Z 2 each complete a non-metallic heterocyclic nucleus containing a 5-or 6 -membered heterocyclic ring; Q completes a non-metallic 5 - or 6 -membered heterocyclic nucleus; and X# is an anion. The surface-sensitive emulsion may be a silver bromoiodide emulsion and the internal image emulsion a silver chlorobromide emulsion. The dye or dyes of Formulae II and III may be used to reduce halation and also to spectrally sensitize the surfacesensitive emulsion. The dyes used may be anhydro- 3, 9-diethyl -5,5'-dimethoxy-3'-(3-sulphobutyl) thiacarbocyanine hydroxide and anhydro -3', 9 - diethyl - 5' -methoxy -5-phenyl -3-(3-sulphobutyl) oxaselenacarbocyanine hydroxide.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US24624672A | 1972-04-21 | 1972-04-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1426277A true GB1426277A (en) | 1976-02-25 |
Family
ID=22929894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1900973A Expired GB1426277A (en) | 1972-04-21 | 1973-04-19 | Sensitive silver halide radiogrpahic materials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1426277A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2121554A (en) * | 1982-06-09 | 1983-12-21 | Fuji Photo Film Co Ltd | Silver halide photographic light-sensitive material |
| US4425425A (en) | 1981-11-12 | 1984-01-10 | Eastman Kodak Company | Radiographic elements exhibiting reduced crossover |
| EP0224161A2 (en) * | 1985-11-25 | 1987-06-03 | Hoechst Aktiengesellschaft | Positive photosensitive composition |
| US4803150A (en) * | 1986-12-23 | 1989-02-07 | Eastman Kodak Company | Radiographic element exhibiting reduced crossover |
| US4818675A (en) * | 1985-06-12 | 1989-04-04 | Fuji Photo Film Co., Ltd. | Silver halide photographic light sensitive material with improved silver blackness of picture image |
| US4900652A (en) * | 1987-07-13 | 1990-02-13 | Eastman Kodak Company | Radiographic element |
-
1973
- 1973-04-19 GB GB1900973A patent/GB1426277A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4425425A (en) | 1981-11-12 | 1984-01-10 | Eastman Kodak Company | Radiographic elements exhibiting reduced crossover |
| GB2121554A (en) * | 1982-06-09 | 1983-12-21 | Fuji Photo Film Co Ltd | Silver halide photographic light-sensitive material |
| US4818675A (en) * | 1985-06-12 | 1989-04-04 | Fuji Photo Film Co., Ltd. | Silver halide photographic light sensitive material with improved silver blackness of picture image |
| EP0224161A2 (en) * | 1985-11-25 | 1987-06-03 | Hoechst Aktiengesellschaft | Positive photosensitive composition |
| EP0224161A3 (en) * | 1985-11-25 | 1988-07-20 | Hoechst Aktiengesellschaft | Positive photosensitive composition |
| US4789619A (en) * | 1985-11-25 | 1988-12-06 | Hoechst Aktiengesellschaft | Positive-working radiation-sensitive mixture comprising a sensitizing polymethine dye |
| US4803150A (en) * | 1986-12-23 | 1989-02-07 | Eastman Kodak Company | Radiographic element exhibiting reduced crossover |
| US4900652A (en) * | 1987-07-13 | 1990-02-13 | Eastman Kodak Company | Radiographic element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |