GB1448006A - Two-step photographic processing to form black and white images - Google Patents
Two-step photographic processing to form black and white imagesInfo
- Publication number
- GB1448006A GB1448006A GB5679973A GB5679973A GB1448006A GB 1448006 A GB1448006 A GB 1448006A GB 5679973 A GB5679973 A GB 5679973A GB 5679973 A GB5679973 A GB 5679973A GB 1448006 A GB1448006 A GB 1448006A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bleaching
- acid
- image
- dec
- 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
- 239000007844 bleaching agent Substances 0.000 abstract 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract 3
- 238000004061 bleaching Methods 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 3
- 229910052709 silver Inorganic materials 0.000 abstract 2
- 239000004332 silver Substances 0.000 abstract 2
- -1 silver halide Chemical class 0.000 abstract 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 abstract 2
- URDCARMUOSMFFI-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]ethyl-(2-hydroxyethyl)amino]acetic acid Chemical compound OCCN(CC(O)=O)CCN(CC(O)=O)CC(O)=O URDCARMUOSMFFI-UHFFFAOYSA-N 0.000 abstract 1
- IPSVDERFJPMANL-UHFFFAOYSA-N 2-hydroxyethylthiourea Chemical compound NC(=S)NCCO IPSVDERFJPMANL-UHFFFAOYSA-N 0.000 abstract 1
- BDDLHHRCDSJVKV-UHFFFAOYSA-N 7028-40-2 Chemical compound CC(O)=O.CC(O)=O.CC(O)=O.CC(O)=O BDDLHHRCDSJVKV-UHFFFAOYSA-N 0.000 abstract 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 abstract 1
- PDQAZBWRQCGBEV-UHFFFAOYSA-N Ethylenethiourea Chemical compound S=C1NCCN1 PDQAZBWRQCGBEV-UHFFFAOYSA-N 0.000 abstract 1
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 abstract 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229960003330 pentetic acid Drugs 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-L thiosulfate(2-) Chemical compound [O-]S([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-L 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
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/38—Fixing; Developing-fixing; Hardening-fixing
-
- 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
- G03C5/40—Chemically transforming developed images
- G03C5/42—Reducing; Intensifying
Landscapes
- 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 |
|---|---|---|---|
| US31282872A | 1972-12-07 | 1972-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1448006A true GB1448006A (en) | 1976-09-02 |
Family
ID=23213195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5679973A Expired GB1448006A (en) | 1972-12-07 | 1973-12-07 | Two-step photographic processing to form black and white images |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS49110345A (enrdf_load_stackoverflow) |
| BE (1) | BE808314A (enrdf_load_stackoverflow) |
| CA (1) | CA1029592A (enrdf_load_stackoverflow) |
| FR (1) | FR2209951B1 (enrdf_load_stackoverflow) |
| GB (1) | GB1448006A (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7211682B2 (en) | 2003-07-21 | 2007-05-01 | Akzo Nobel N.V. | Aqueous solution of a sodium salt of HEDTA |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH336257A (de) * | 1953-12-05 | 1959-02-15 | Agfa Ag | Verfahren zum Bleichfixieren von photographischen Bildern |
| BE698038A (enrdf_load_stackoverflow) * | 1966-05-06 | 1967-10-16 | ||
| DE1942688A1 (de) * | 1968-09-13 | 1970-06-25 | Rca Corp | Entwickler fuer die Verwendung beim Entwickeln photographischer Silberemulsionsplatten |
| GB1336102A (en) * | 1972-01-03 | 1973-11-07 | Fuji Photo Film Co Ltd | Processing of silver halide photographic material |
-
1973
- 1973-12-06 BE BE138597A patent/BE808314A/xx unknown
- 1973-12-06 CA CA187,594A patent/CA1029592A/en not_active Expired
- 1973-12-07 JP JP14173373A patent/JPS49110345A/ja active Pending
- 1973-12-07 GB GB5679973A patent/GB1448006A/en not_active Expired
- 1973-12-07 FR FR7343771A patent/FR2209951B1/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7211682B2 (en) | 2003-07-21 | 2007-05-01 | Akzo Nobel N.V. | Aqueous solution of a sodium salt of HEDTA |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2209951A1 (enrdf_load_stackoverflow) | 1974-07-05 |
| BE808314A (fr) | 1974-03-29 |
| FR2209951B1 (enrdf_load_stackoverflow) | 1977-08-12 |
| JPS49110345A (enrdf_load_stackoverflow) | 1974-10-21 |
| CA1029592A (en) | 1978-04-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |