GB767703A - Improvements in direct positive photographic processes - Google Patents
Improvements in direct positive photographic processesInfo
- Publication number
- GB767703A GB767703A GB22509/54A GB2250954A GB767703A GB 767703 A GB767703 A GB 767703A GB 22509/54 A GB22509/54 A GB 22509/54A GB 2250954 A GB2250954 A GB 2250954A GB 767703 A GB767703 A GB 767703A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bromide
- methyl
- phenethyl
- pyrazolidone
- developing
- 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
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 abstract 6
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 abstract 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 239000003795 chemical substances by application Substances 0.000 abstract 3
- 150000001875 compounds Chemical class 0.000 abstract 3
- 239000000839 emulsion Substances 0.000 abstract 3
- 239000000203 mixture Substances 0.000 abstract 3
- -1 silver halide Chemical class 0.000 abstract 3
- PLIKAWJENQZMHA-UHFFFAOYSA-N 4-aminophenol Chemical compound NC1=CC=C(O)C=C1 PLIKAWJENQZMHA-UHFFFAOYSA-N 0.000 abstract 2
- QMJDEXCUIQJLGO-UHFFFAOYSA-N [4-(methylamino)phenyl] hydrogen sulfate Chemical compound CNC1=CC=C(OS(O)(=O)=O)C=C1 QMJDEXCUIQJLGO-UHFFFAOYSA-N 0.000 abstract 2
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 abstract 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N hydrazine Substances NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 abstract 2
- NDGRWYRVNANFNB-UHFFFAOYSA-N pyrazolidin-3-one Chemical compound O=C1CCNN1 NDGRWYRVNANFNB-UHFFFAOYSA-N 0.000 abstract 2
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 abstract 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 abstract 2
- CNHDIAIOKMXOLK-UHFFFAOYSA-N toluquinol Chemical compound CC1=CC(O)=CC=C1O CNHDIAIOKMXOLK-UHFFFAOYSA-N 0.000 abstract 2
- CDAWCLOXVUBKRW-UHFFFAOYSA-N 2-aminophenol Chemical compound NC1=CC=CC=C1O CDAWCLOXVUBKRW-UHFFFAOYSA-N 0.000 abstract 1
- ZLIJWPHGHZSDRE-UHFFFAOYSA-M 2-benzyl-3-methylisoquinolin-2-ium bromide Chemical compound [Br-].C(C1=CC=CC=C1)[N+]1=CC2=CC=CC=C2C=C1C ZLIJWPHGHZSDRE-UHFFFAOYSA-M 0.000 abstract 1
- FJWJYHHBUMICTP-UHFFFAOYSA-N 4,4-dimethylpyrazolidin-3-one Chemical compound CC1(C)CNNC1=O FJWJYHHBUMICTP-UHFFFAOYSA-N 0.000 abstract 1
- QSYZTCQOHVGTSX-UHFFFAOYSA-M 4-methyl-1-(2-phenylethyl)pyridin-1-ium;bromide Chemical compound [Br-].C1=CC(C)=CC=[N+]1CCC1=CC=CC=C1 QSYZTCQOHVGTSX-UHFFFAOYSA-M 0.000 abstract 1
- LRUDIIUSNGCQKF-UHFFFAOYSA-N 5-methyl-1H-benzotriazole Chemical compound C1=C(C)C=CC2=NNN=C21 LRUDIIUSNGCQKF-UHFFFAOYSA-N 0.000 abstract 1
- RXGPVXBMVLPCSU-UHFFFAOYSA-N C1(=CC=C(C=C1)S(=O)(=O)[O-])C.CN1N=[NH+]C2=C1C=CC=C2 Chemical compound C1(=CC=C(C=C1)S(=O)(=O)[O-])C.CN1N=[NH+]C2=C1C=CC=C2 RXGPVXBMVLPCSU-UHFFFAOYSA-N 0.000 abstract 1
- QEVGZEDELICMKH-UHFFFAOYSA-N Diglycolic acid Chemical compound OC(=O)COCC(O)=O QEVGZEDELICMKH-UHFFFAOYSA-N 0.000 abstract 1
- 125000000217 alkyl group Chemical group 0.000 abstract 1
- 125000000732 arylene group Chemical group 0.000 abstract 1
- 150000001555 benzenes Chemical class 0.000 abstract 1
- AJPXTSMULZANCB-UHFFFAOYSA-N chlorohydroquinone Chemical compound OC1=CC=C(O)C(Cl)=C1 AJPXTSMULZANCB-UHFFFAOYSA-N 0.000 abstract 1
- INQOMBQAUSQDDS-UHFFFAOYSA-N iodomethane Chemical compound IC INQOMBQAUSQDDS-UHFFFAOYSA-N 0.000 abstract 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 abstract 1
- CMCWWLVWPDLCRM-UHFFFAOYSA-N phenidone Chemical compound N1C(=O)CCN1C1=CC=CC=C1 CMCWWLVWPDLCRM-UHFFFAOYSA-N 0.000 abstract 1
- 229940038531 phenylhydrazine hydrochloride Drugs 0.000 abstract 1
- 229940079877 pyrogallol Drugs 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- 239000001488 sodium phosphate Substances 0.000 abstract 1
- 235000010265 sodium sulphite Nutrition 0.000 abstract 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 abstract 1
- 229910000406 trisodium phosphate Inorganic materials 0.000 abstract 1
- 235000019801 trisodium phosphate Nutrition 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
- G03C1/48538—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure
- G03C1/48546—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure characterised by the nucleating/fogging agent
- G03C1/48553—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure characterised by the nucleating/fogging agent the fogging agent only present in the developer
-
- 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
- G03C1/48538—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure
- G03C1/48546—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure characterised by the nucleating/fogging agent
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US371946A US2685514A (en) | 1953-08-03 | 1953-08-03 | Direct positive photographic development process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB767703A true GB767703A (en) | 1957-02-06 |
Family
ID=23466058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22509/54A Expired GB767703A (en) | 1953-08-03 | 1954-08-03 | Improvements in direct positive photographic processes |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2685514A (enrdf_load_stackoverflow) |
| BE (1) | BE530882A (enrdf_load_stackoverflow) |
| FR (1) | FR1143615A (enrdf_load_stackoverflow) |
| GB (1) | GB767703A (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4801521A (en) * | 1986-07-22 | 1989-01-31 | Fuji Photo Film Co., Ltd. | Method for processing silver halide color photographic material with a color developer comprising a hydrazine derivative |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2840471A (en) * | 1956-09-06 | 1958-06-24 | Francis G Berry | Photographic film developer |
| US3062643A (en) * | 1959-05-22 | 1962-11-06 | Eastman Kodak Co | Photographic diffusion transfer process |
| US3719494A (en) * | 1970-10-30 | 1973-03-06 | Eastman Kodak Co | Silver halide emulsion containing a dihydroaromatic quaternary salt nucleating agent and the use thereof |
| JPS5710141A (en) * | 1980-06-20 | 1982-01-19 | Fuji Photo Film Co Ltd | Photographic element for color diffusion transfer |
| US5384232A (en) * | 1991-12-02 | 1995-01-24 | E. I. Du Pont De Nemours And Company | Process for rapid access development of silver halide films using pyridinium as development accelerators |
-
0
- BE BE530882D patent/BE530882A/xx unknown
-
1953
- 1953-08-03 US US371946A patent/US2685514A/en not_active Expired - Lifetime
-
1954
- 1954-08-02 FR FR1143615D patent/FR1143615A/fr not_active Expired
- 1954-08-03 GB GB22509/54A patent/GB767703A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4801521A (en) * | 1986-07-22 | 1989-01-31 | Fuji Photo Film Co., Ltd. | Method for processing silver halide color photographic material with a color developer comprising a hydrazine derivative |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1143615A (fr) | 1957-10-03 |
| BE530882A (enrdf_load_stackoverflow) | |
| US2685514A (en) | 1954-08-03 |
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