GB1420205A - Photographic process - Google Patents
Photographic processInfo
- Publication number
- GB1420205A GB1420205A GB4764472A GB4764472A GB1420205A GB 1420205 A GB1420205 A GB 1420205A GB 4764472 A GB4764472 A GB 4764472A GB 4764472 A GB4764472 A GB 4764472A GB 1420205 A GB1420205 A GB 1420205A
- Authority
- GB
- United Kingdom
- Prior art keywords
- complex
- iii
- silver halide
- developer solution
- cobalt
- 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
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/29—Development processes or agents therefor
- G03C5/30—Developers
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/137—Cobalt complex containing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
1420205 Development processes EASTMAN KODAK CO 160ct 1972 [14 Oct 1971] 47644/72 Heading G2C An imagewise exposed silver halide emulsion is developed in the presence of a complex of trivalent cobalt or chromium. The co-ordination number of the Cr (III) and Co (III) complex is preferably six, the ligands being selected from ethylenediamine, diethylenetriamine, triethylenetetraamine, NH 3 , NO 3 , N 2 , N 3 , Cl, SCN, NCS, H 2 O, CO 3 and EDTA. The complex, which is a development accelerator, is present in either the silver halide material or the developer solution. The developer solution may also contain a nucleating agent e.g. formyl-4-methylphenylhydrazine. One complex, the cobalt hexammine (III) complex, also functions as an anti-foggant.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18933171A | 1971-10-14 | 1971-10-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1420205A true GB1420205A (en) | 1976-01-07 |
Family
ID=22696850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4764472A Expired GB1420205A (en) | 1971-10-14 | 1972-10-16 | Photographic process |
Country Status (2)
Country | Link |
---|---|
US (1) | US3748138A (en) |
GB (1) | GB1420205A (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3970458A (en) * | 1971-10-14 | 1976-07-20 | Eastman Kodak Company | Imagewise hardening with inert transition metal complex oxidizing agents |
US3856524A (en) * | 1971-10-14 | 1974-12-24 | Eastman Kodak Co | Photographic elements and processes for providing tanned image records |
US3923511A (en) * | 1971-10-14 | 1975-12-02 | Eastman Kodak Co | Photographic process and composition employing CO(III) complexes and silver halide solvents |
US3847619A (en) * | 1972-11-20 | 1974-11-12 | Eastman Kodak Co | Ion-paired cobaltic complexes and photographic elements containing same |
US3891442A (en) * | 1972-12-04 | 1975-06-24 | Eastman Kodak Co | Lithographic materials containing metal complexes |
US3841873A (en) * | 1973-05-21 | 1974-10-15 | Eastman Kodak Co | Cobalt (iii) complex amplifier baths in color photographic processes |
US3887375A (en) * | 1973-08-24 | 1975-06-03 | Minnesota Mining & Mfg | Restrainers for rapid access, air stable, regenerable, metal chelate developer solutions |
US4002477A (en) * | 1973-11-28 | 1977-01-11 | Eastman Kodak Company | Diffusion transfer processes and elements using or containing inert transitional metal complex oxidizing agents |
US3901712A (en) * | 1974-03-11 | 1975-08-26 | Eastman Kodak Co | Low concentration sensitization and development acceleration |
US4195998A (en) * | 1974-04-15 | 1980-04-01 | Eastman Kodak Company | CO(III) Complex containing radiation sensitive element with diazo recording layer |
US3964912A (en) * | 1974-09-09 | 1976-06-22 | Eastman Kodak Company | Ruthenium containing photographic developers |
US3938998A (en) * | 1975-03-28 | 1976-02-17 | Minnesota Mining And Manufacturing Company | Low contrast, rapid access, air stable, regenerable iron chelate developer solutions |
CA1064311A (en) * | 1975-09-02 | 1979-10-16 | Vernon L. Bissonette | Redox amplification process employing cobalt iii complex and peroxide as oxidizing agents |
US4433037A (en) * | 1982-07-15 | 1984-02-21 | Eastman Kodak Company | Heat erasable photographic element and process comprising silver halide |
US5360712A (en) * | 1993-07-13 | 1994-11-01 | Eastman Kodak Company | Internally doped silver halide emulsions and processes for their preparation |
EP0658802B1 (en) * | 1993-12-14 | 2000-03-15 | Fuji Photo Film Co., Ltd. | Surface latent image type photographic material containing silver halide grains doped with cyano-chromium-complex ion |
GB9426275D0 (en) * | 1994-12-24 | 1995-02-22 | Kodak Ltd | Photographic silver halide material having improved spectral characteristics |
US6162599A (en) * | 1998-01-30 | 2000-12-19 | Agfa-Gevaert, N.V. | Photosensitive image-forming element containing silver halide crystals which are internally modified with a metal ligand complex forming deep electron traps |
GB0211049D0 (en) | 2002-05-15 | 2002-06-26 | Eastman Kodak Co | Protection of photographic material |
-
1971
- 1971-10-14 US US00189331A patent/US3748138A/en not_active Expired - Lifetime
-
1972
- 1972-10-16 GB GB4764472A patent/GB1420205A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3748138A (en) | 1973-07-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1420205A (en) | Photographic process | |
GB1487261A (en) | Macrocyclic polyamines as sensitisers for silver halide emulsions | |
GB1399481A (en) | Methods of photographic colour processing and processing solutions for use therein | |
GB1533039A (en) | Photographic silver halide materials and developers containing couplers | |
GB1030442A (en) | Photographic monobath compositions | |
GB1363772A (en) | Photographic silver halide emulsions | |
GB1312864A (en) | Lithographic materials and their development | |
GB1362032A (en) | Method of making photographic silver halide emulsions | |
GB1227621A (en) | ||
GB1442470A (en) | Processing of silver halide photographic materials | |
GB1387713A (en) | Method of processing silver halide photographic materials | |
GB1315495A (en) | Method of making photographic silver halide emulsions | |
GB1052446A (en) | ||
GB1505699A (en) | Photographic silver halide materials | |
GB1527508A (en) | Light-sensitive colour photographic material | |
GB1512135A (en) | Colour development processing of silver halide photographic material | |
GB1315498A (en) | Method for developing photographic silver halide materials | |
GB1184138A (en) | Improvements in or relating to Silver Halide Photographic Emulsions | |
GB1423849A (en) | Method of photographic development | |
GB1281458A (en) | Process for producing photographic emulsions | |
GB1287283A (en) | Photographic development process | |
GB1244697A (en) | Photographic development process | |
GB1529462A (en) | Photographic silver halide development in the presence of a 3-phenylamino-5-pyrazolone coupler | |
GB1157617A (en) | Method of making 3-Pyrazolidones | |
GB1269548A (en) | Photographic process |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |