US3432298A - Silver salt diffusion process - Google Patents
Silver salt diffusion process Download PDFInfo
- Publication number
- US3432298A US3432298A US625613A US3432298DA US3432298A US 3432298 A US3432298 A US 3432298A US 625613 A US625613 A US 625613A US 3432298D A US3432298D A US 3432298DA US 3432298 A US3432298 A US 3432298A
- Authority
- US
- United States
- Prior art keywords
- silver
- processing
- bath
- salt diffusion
- diffusion process
- 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 - Lifetime
Links
- 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 title description 11
- 238000009792 diffusion process Methods 0.000 title description 10
- 238000012545 processing Methods 0.000 description 30
- 229910052709 silver Inorganic materials 0.000 description 22
- 239000004332 silver Substances 0.000 description 22
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 16
- 239000010802 sludge Substances 0.000 description 12
- -1 heterocyclic mercapto compounds Chemical class 0.000 description 11
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- CQOAJLIZQSKDFC-UHFFFAOYSA-N 6-methyl-1h-pyrimidine-2,4-dithione Chemical compound CC1=CC(=S)NC(=S)N1 CQOAJLIZQSKDFC-UHFFFAOYSA-N 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000011161 development Methods 0.000 description 6
- 239000000839 emulsion Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- ZEQIWKHCJWRNTH-UHFFFAOYSA-N 1h-pyrimidine-2,4-dithione Chemical compound S=C1C=CNC(=S)N1 ZEQIWKHCJWRNTH-UHFFFAOYSA-N 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 150000003378 silver Chemical class 0.000 description 3
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 3
- 235000019345 sodium thiosulphate Nutrition 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical class OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 229910052946 acanthite Inorganic materials 0.000 description 2
- CMCWWLVWPDLCRM-UHFFFAOYSA-N phenidone Chemical compound N1C(=O)CCN1C1=CC=CC=C1 CMCWWLVWPDLCRM-UHFFFAOYSA-N 0.000 description 2
- XUARKZBEFFVFRG-UHFFFAOYSA-N silver sulfide Chemical compound [S-2].[Ag+].[Ag+] XUARKZBEFFVFRG-UHFFFAOYSA-N 0.000 description 2
- 229940056910 silver sulfide Drugs 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- PQMFVUNERGGBPG-UHFFFAOYSA-N (6-bromopyridin-2-yl)hydrazine Chemical class NNC1=CC=CC(Br)=N1 PQMFVUNERGGBPG-UHFFFAOYSA-N 0.000 description 1
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 description 1
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical compound C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 description 1
- ZSILVJLXKHGNPL-UHFFFAOYSA-L S(=S)(=O)([O-])[O-].[Ag+2] Chemical compound S(=S)(=O)([O-])[O-].[Ag+2] ZSILVJLXKHGNPL-UHFFFAOYSA-L 0.000 description 1
- 229910021607 Silver chloride Inorganic materials 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 229910000147 aluminium phosphate Chemical class 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 229910052980 cadmium sulfide Inorganic materials 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- HBCQSNAFLVXVAY-UHFFFAOYSA-N pyrimidine-2-thiol Chemical class SC1=NC=CC=N1 HBCQSNAFLVXVAY-UHFFFAOYSA-N 0.000 description 1
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- WWNBZGLDODTKEM-UHFFFAOYSA-N sulfanylidenenickel Chemical compound [Ni]=S WWNBZGLDODTKEM-UHFFFAOYSA-N 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 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
- G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
- G03C8/02—Photosensitive materials characterised by the image-forming section
- G03C8/04—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of inorganic or organo-metallic compounds derived from photosensitive noble metals
- G03C8/06—Silver salt diffusion transfer
Definitions
- This invention relates to an improvement in the silver salt diffusion process using processing baths which are free from developer substances and which contain a compound of the mercapto pyrimidin series.
- alkaline development baths usually containing mixtures of hydroquinone and l-phenyl-3-pyrazolidone as developer, are used for the development of the exposed lightsensitive layer. It is also possible, however, for the developer chemicals to be incorporated in the light-sensitive layer or in the transfer layer. In this form of the process, only an aqueous-alkaline solution with a pH of about 11-12, which initiates development, need be used as processing bath. Compared with the conventional developer, a processing bath of this kind has the advantage that it does not contain any developer chemicals which can be oxidized in the presence of air and thus discolour the bath.
- R represents hydrogen or alkyl with up to five carbon atoms, preferably with up to three carbon atoms, most advantageously methyl.
- the alkaline processing baths according to the invention can further contain, for example, the following additives: Alkalies such as sodium hydroxide or sodium salts of boric or phosphoric acid such as Na PO or sodium carbonate.
- Alkalies such as sodium hydroxide or sodium salts of boric or phosphoric acid such as Na PO or sodium carbonate.
- the processing bath has a pH value of preferably between 11.0 and 12.5.
- the processing bath further con tains 20 to g./l. of a sulfite, preferably an alkali metal sulfite, particularly sodium sulfite; 0.2 to 2 g./l. of a stabilizer such as KBr or KI; and 0.02 to 0.2 g./l., preferably about 0.07 to 0.09 g./l. of the 2,4-dimercapto-pyrimidine compounds of the present invention.
- a sulfite preferably an alkali metal sulfite, particularly sodium sulfite
- a stabilizer such as KBr or KI
- 0.02 to 0.2 g./l. preferably about 0.07 to 0.09 g./l. of the 2,4-dimercapto-pyrimidine compounds of the present invention.
- substances which influence the image tone or silver salt solvents such as sodium thiosulfate, may also be present in the baths according to the invention. It is of course possible to add to the processing bath other substances which may be required to satisfy the special requirements of the particular copying process.
- the processing bath of the present invention is particularly useful for processing light-sensitive materials, which contain a mixture of hydroquinone and 1-phenyl-3-pyrazolidone as developer in the light-sensitive layer.
- the transfer materials do not have to meet any special requirements either. According to common practice they contain solvents for silver halides preferably sodium thiosulfate, and development nuclei, for example, metallic silver or gold, or sulfides such as nickel sulfide, cadmium sulfide or silver sulfide.
- Water 1 1 copies are prepared in the manner described using the same solution. Thereafter, the processing bath is pale yellow in color and contains small quantities of a light-colored flaky deposit of the silver salts of 2,4-dimercapto-6- methylpyrim'idine. This deposit does not interfere with processing. It remains light yellow in color even after standing in light for several days. No black silver is deposited.
- Example 2 A light-sensitive material with a silver halide emulsion layer containing 1.0 g. of hydroquinone and 0.3 g. of 1-phenyl-3-pyrazolidone per g. of silver, and silver halides comprising 0.25 mol of silver chloride and 0.01 mol of silver bromide per kg. of emulsion, is exposed to form an image.
- the exposed layer is brought into contact with a transfer material which contains silver sulfide development nuclei and approximately 1.6 g. of sodium thiosulfate (Na S O -5H O) per m. and processed in a conventional development apparatus for the silver salt diffusion process with a run-through time of 7 to 8 seconds per sheet (DIN A4).
- the composition of the processing bath is as follows:
- the processing bath is pale yellow in color and contains small quantities of a light-colored flaky deposit of the silver salts of 2,4-dimercapto-6- methyl-pyrimidine. This deposit does not interfere with processing. It remains bright yellow in color even after standing in light for several days. No black silver is deposited.
- Example 4 Equally good results are obtained with the following processing bath using the same emulsion as described in Example 1:
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEA0052203 | 1966-04-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3432298A true US3432298A (en) | 1969-03-11 |
Family
ID=6938353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US625613A Expired - Lifetime US3432298A (en) | 1966-04-19 | 1967-03-24 | Silver salt diffusion process |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3432298A (OSRAM) |
| BE (1) | BE696607A (OSRAM) |
| CH (1) | CH516818A (OSRAM) |
| DE (1) | DE1522369A1 (OSRAM) |
| GB (1) | GB1122158A (OSRAM) |
| NL (1) | NL6704707A (OSRAM) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4955529A (OSRAM) * | 1972-06-21 | 1974-05-29 | ||
| US5506092A (en) * | 1993-12-06 | 1996-04-09 | Konica Corporation | Method of processing black and white silver halide photographic compositions with a developer containing an anti sludgant |
| US5591567A (en) * | 1994-04-07 | 1997-01-07 | Konica Corporation | Method of processing photographic light-sensitive material |
| US5840472A (en) * | 1996-02-07 | 1998-11-24 | Fuji Photo Film Co., Ltd. | Developer for silver halide photographic photosensitive material |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1470369A (en) * | 1973-06-22 | 1977-04-14 | Agfa Gevaert | Photographic complex diffusion transfer process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2573027A (en) * | 1944-11-13 | 1951-10-30 | Ilford Ltd | Photographic element and process utilizing antibronzing agents |
-
1966
- 1966-04-19 DE DE19661522369 patent/DE1522369A1/de active Pending
-
1967
- 1967-03-24 US US625613A patent/US3432298A/en not_active Expired - Lifetime
- 1967-04-03 NL NL6704707A patent/NL6704707A/xx unknown
- 1967-04-05 BE BE696607D patent/BE696607A/xx unknown
- 1967-04-10 CH CH502367A patent/CH516818A/de not_active IP Right Cessation
- 1967-04-11 GB GB16584/67A patent/GB1122158A/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2573027A (en) * | 1944-11-13 | 1951-10-30 | Ilford Ltd | Photographic element and process utilizing antibronzing agents |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4955529A (OSRAM) * | 1972-06-21 | 1974-05-29 | ||
| US5506092A (en) * | 1993-12-06 | 1996-04-09 | Konica Corporation | Method of processing black and white silver halide photographic compositions with a developer containing an anti sludgant |
| US5591567A (en) * | 1994-04-07 | 1997-01-07 | Konica Corporation | Method of processing photographic light-sensitive material |
| US5840472A (en) * | 1996-02-07 | 1998-11-24 | Fuji Photo Film Co., Ltd. | Developer for silver halide photographic photosensitive material |
Also Published As
| Publication number | Publication date |
|---|---|
| BE696607A (OSRAM) | 1967-10-05 |
| GB1122158A (en) | 1968-07-31 |
| CH516818A (de) | 1971-12-15 |
| NL6704707A (OSRAM) | 1967-09-25 |
| DE1522369A1 (de) | 1969-08-14 |
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