GB1324515A - Process for the removal of metallic silver from photographic material - Google Patents
Process for the removal of metallic silver from photographic materialInfo
- Publication number
- GB1324515A GB1324515A GB3530370A GB3530370A GB1324515A GB 1324515 A GB1324515 A GB 1324515A GB 3530370 A GB3530370 A GB 3530370A GB 3530370 A GB3530370 A GB 3530370A GB 1324515 A GB1324515 A GB 1324515A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver
- baths
- salts
- bleach
- bath
- 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
- 229910052709 silver Inorganic materials 0.000 title abstract 6
- 239000004332 silver Substances 0.000 title abstract 6
- 239000000463 material Substances 0.000 title abstract 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 5
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 abstract 3
- 239000007844 bleaching agent Substances 0.000 abstract 3
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 abstract 2
- KYQCOXFCLRTKLS-UHFFFAOYSA-N Pyrazine Chemical compound C1=CN=CC=N1 KYQCOXFCLRTKLS-UHFFFAOYSA-N 0.000 abstract 2
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 abstract 2
- 239000008139 complexing agent Substances 0.000 abstract 2
- 239000007800 oxidant agent Substances 0.000 abstract 2
- 230000001590 oxidative effect Effects 0.000 abstract 2
- 150000003378 silver Chemical class 0.000 abstract 2
- WBBPRCNXBQTYLF-UHFFFAOYSA-N 2-methylthioethanol Chemical compound CSCCO WBBPRCNXBQTYLF-UHFFFAOYSA-N 0.000 abstract 1
- ODJQKYXPKWQWNK-UHFFFAOYSA-N 3,3'-Thiobispropanoic acid Chemical compound OC(=O)CCSCCC(O)=O ODJQKYXPKWQWNK-UHFFFAOYSA-N 0.000 abstract 1
- PCNDJXKNXGMECE-UHFFFAOYSA-N Phenazine Natural products C1=CC=CC2=NC3=CC=CC=C3N=C21 PCNDJXKNXGMECE-UHFFFAOYSA-N 0.000 abstract 1
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 abstract 1
- 239000003490 Thiodipropionic acid Substances 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 125000005233 alkylalcohol group Chemical group 0.000 abstract 1
- 150000001450 anions Chemical class 0.000 abstract 1
- 238000004061 bleaching Methods 0.000 abstract 1
- -1 ferricyanide ions Chemical class 0.000 abstract 1
- 150000004820 halides Chemical class 0.000 abstract 1
- 150000002825 nitriles Chemical class 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 abstract 1
- YODZTKMDCQEPHD-UHFFFAOYSA-N thiodiglycol Chemical compound OCCSCCO YODZTKMDCQEPHD-UHFFFAOYSA-N 0.000 abstract 1
- 229950006389 thiodiglycol Drugs 0.000 abstract 1
- 235000019303 thiodipropionic acid Nutrition 0.000 abstract 1
- 150000003568 thioethers Chemical class 0.000 abstract 1
- 229930192474 thiophene Natural products 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
- G03C5/40—Chemically transforming developed images
- G03C5/44—Bleaching; Bleach-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
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/28—Silver dye bleach processes; Materials therefor; Preparing or processing such materials
-
- 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
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
- G03C7/42—Bleach-fixing or agents therefor ; Desilvering processes
- G03C7/421—Additives other than bleaching or fixing agents
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
1324515 Photographic silver bleach baths CIBA-GEIGY A G 21 July 1970 [30 July 1969] 35303/70 Heading G2C Photographic silver bleach baths which will remove silver but not silver salts from developed silver salt materials comprise an acid bath free from anions that form sparingly soluble silver salts i.e. having a solubility product of less than 10<SP>-8À5</SP>(mole/litre)<SP>2</SP> at 25C (e.g. halide and ferricyanide ions), which bath contains (i) an oxidant having a standard redox potential of from +0À15 up to but excluding +0À8 volt, (e.g. cupric or ferric salts or a quinone), and (ii) a silver ion complexing agent having a silver complex stability constant of from 10<SP>1</SP> to 10<SP>9</SP>(litre/mole)<SP>2</SP>, (e.g. alkyl alcohol, a nitrile such as acetonitrile, pyrazine, thiophene or a water-soluble thioether such as thiodiglycol, thiodipropionic acid and 2-hydroxyethyl-methyl sulphide), said bath not containing an oxidant or a complexing agent having properties lying outside the above ranges. The baths are suitable for bleaching of silver during reversal processing, especially the reversal processing of silver-dye-bleach materials.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1160569A CH511456A (en) | 1969-07-30 | 1969-07-30 | Process for removing metallic silver from photographic material |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1324515A true GB1324515A (en) | 1973-07-25 |
Family
ID=4375095
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3530370A Expired GB1324515A (en) | 1969-07-30 | 1970-07-21 | Process for the removal of metallic silver from photographic material |
Country Status (8)
Country | Link |
---|---|
US (1) | US3716362A (en) |
BE (1) | BE754080A (en) |
CA (1) | CA942559A (en) |
CH (1) | CH511456A (en) |
DE (1) | DE2037684A1 (en) |
FR (1) | FR2055511A5 (en) |
GB (1) | GB1324515A (en) |
NL (1) | NL7011234A (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3893858A (en) * | 1973-03-26 | 1975-07-08 | Eastman Kodak Co | Photographic bleach accelerators |
JPS522433A (en) * | 1975-06-23 | 1977-01-10 | Fuji Photo Film Co Ltd | Single bath color element silver branching liquid |
CH597627A5 (en) * | 1975-11-17 | 1978-04-14 | Ciba Geigy Ag | |
US4125402A (en) * | 1976-08-19 | 1978-11-14 | Ciba-Geigy Ag | Method of processing silver dye bleaching materials and preparations suitable for the dye and silver bleaching |
JPS5820424B2 (en) * | 1976-10-12 | 1983-04-22 | 富士写真フイルム株式会社 | Color image forming method |
JPS586937B2 (en) * | 1977-10-26 | 1983-02-07 | 富士写真フイルム株式会社 | Color image forming method |
DE2748430A1 (en) * | 1977-10-28 | 1979-05-03 | Agfa Gevaert Ag | PHOTOGRAPHIC BLEACHING COMPOSITIONS WITH BLADE ACCELERATING COMPOUNDS |
WO1991008517A1 (en) * | 1989-12-04 | 1991-06-13 | Fuji Photo Film Co., Ltd. | Process for treating silver halide photographic meterial and composition therefor |
US5508150A (en) * | 1993-12-29 | 1996-04-16 | Eastman Kodak Company | Fixer additives used in combination with iron complex based bleaches to prevent iron retention |
US5434035A (en) * | 1993-12-29 | 1995-07-18 | Eastman Kodak Company | Fixer additives used in combination with iron complex based bleaches to improve desilvering |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2020775A (en) * | 1930-11-07 | 1935-11-12 | Bela Gaspar | Method of producing photographic pictures in colors |
NL44564C (en) * | 1934-06-15 | |||
GB539509A (en) * | 1940-01-11 | 1941-09-15 | Eastman Kodak Co | Improvements in or relating to the production of colour photographs |
GB539190A (en) * | 1940-02-22 | 1941-09-01 | Eastman Kodak Co | Method of colour photography and materials therefor |
US2322001A (en) * | 1940-10-10 | 1943-06-15 | Eastman Kodak Co | Method of producing dye images |
US2529981A (en) * | 1945-11-28 | 1950-11-14 | Eastman Kodak Co | Bleaching silver images |
US2699394A (en) * | 1950-12-15 | 1955-01-11 | Gaspar Bela | Production of photographic dye images |
BE520411A (en) * | 1952-06-07 | 1955-06-24 | ||
US2748000A (en) * | 1954-04-01 | 1956-05-29 | Eastman Kodak Co | Removing silver and silver halide from photographic elements |
-
1969
- 1969-07-30 CH CH1160569A patent/CH511456A/en not_active IP Right Cessation
-
1970
- 1970-07-21 CA CA088,675A patent/CA942559A/en not_active Expired
- 1970-07-21 US US00056945A patent/US3716362A/en not_active Expired - Lifetime
- 1970-07-21 GB GB3530370A patent/GB1324515A/en not_active Expired
- 1970-07-23 FR FR7027157A patent/FR2055511A5/fr not_active Expired
- 1970-07-29 DE DE19702037684 patent/DE2037684A1/en active Pending
- 1970-07-29 BE BE754080D patent/BE754080A/en unknown
- 1970-07-29 NL NL7011234A patent/NL7011234A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
US3716362A (en) | 1973-02-13 |
CA942559A (en) | 1974-02-26 |
BE754080A (en) | 1971-01-29 |
DE2037684A1 (en) | 1971-02-25 |
FR2055511A5 (en) | 1971-05-07 |
CH511456A (en) | 1971-08-15 |
NL7011234A (en) | 1971-02-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |