GB767978A - Improvements in or relating to the production of direct positive photographic imagesby the silver salt diffusion process - Google Patents
Improvements in or relating to the production of direct positive photographic imagesby the silver salt diffusion processInfo
- Publication number
- GB767978A GB767978A GB16813/54A GB1681354A GB767978A GB 767978 A GB767978 A GB 767978A GB 16813/54 A GB16813/54 A GB 16813/54A GB 1681354 A GB1681354 A GB 1681354A GB 767978 A GB767978 A GB 767978A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver halide
- layer
- halide emulsion
- diffusion process
- silver salt
- 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
- 238000009792 diffusion process Methods 0.000 title abstract 2
- 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 abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 abstract 4
- 229910052709 silver Inorganic materials 0.000 abstract 4
- 239000004332 silver Substances 0.000 abstract 4
- -1 silver halide Chemical class 0.000 abstract 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 239000000839 emulsion Substances 0.000 abstract 3
- 239000000243 solution Substances 0.000 abstract 3
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 abstract 2
- 125000003118 aryl group Chemical group 0.000 abstract 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- XKCZQONRGGXTQN-UHFFFAOYSA-N 3-cyclohexylbenzene-1,2-diol Chemical compound OC1=CC=CC(C2CCCCC2)=C1O XKCZQONRGGXTQN-UHFFFAOYSA-N 0.000 abstract 1
- 241001479434 Agfa Species 0.000 abstract 1
- 239000001828 Gelatine Substances 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- 230000001476 alcoholic effect Effects 0.000 abstract 1
- 125000001931 aliphatic group Chemical group 0.000 abstract 1
- 239000012670 alkaline solution Substances 0.000 abstract 1
- 235000010323 ascorbic acid Nutrition 0.000 abstract 1
- 229960005070 ascorbic acid Drugs 0.000 abstract 1
- 239000011668 ascorbic acid Substances 0.000 abstract 1
- 125000004432 carbon atom Chemical group C* 0.000 abstract 1
- 229920000159 gelatin Polymers 0.000 abstract 1
- 235000019322 gelatine Nutrition 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- RWPGFSMJFRPDDP-UHFFFAOYSA-L potassium metabisulfite Chemical compound [K+].[K+].[O-]S(=O)S([O-])(=O)=O RWPGFSMJFRPDDP-UHFFFAOYSA-L 0.000 abstract 1
- 235000010263 potassium metabisulphite Nutrition 0.000 abstract 1
- 239000004297 potassium metabisulphite Substances 0.000 abstract 1
- 235000010265 sodium sulphite Nutrition 0.000 abstract 1
- 229910021653 sulphate ion Inorganic materials 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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
767,978. Photographic silver salt diffusion process. AGFA AKT -GES FUR PHOTOFABRIKATION June 8, 1954 [June 5, 1953], No. 16813/54. Class 98(2) A light-sensitive silver halide emulsion. layer, containing an aromatic developing substance the aromatic nucleus of which is substituted by an aliphatic residue containing at least three carbon atoms or by a cyclo-aliphatic or araliphatic residue, is exposed and contacted with a reception layer containing development nuclei in the presence of an alkaline solution containing a silver halide solution to produce direct positive image in the reception layer. In an example 1, 2 - dihydroxy - 3 - cyclohexyl benzene in aqueous alcoholic solution is added to a silver halide emulsion and a layer produced therefrom is exposed and contacted in the presence of a solution containing sodium hydroxide and sodium sulphite with a gelatine layer containing colloidal silver sulphate, hypo, potassium metabisulphite and hydroquinone and the layers are separated after a time for the processing, the positive image possessing excellent whites. Otherdeveloping substances of the specified kinds for use in the silver halide emulsion are quoted and the hydroquinone in the reception layer may be replaced by metal or ascorbic acid. Specification 655,273 is. referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE329758X | 1953-06-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB767978A true GB767978A (en) | 1957-02-13 |
Family
ID=6187383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16813/54A Expired GB767978A (en) | 1953-06-05 | 1954-06-08 | Improvements in or relating to the production of direct positive photographic imagesby the silver salt diffusion process |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE529348A (en) |
| CH (1) | CH329758A (en) |
| FR (1) | FR1101926A (en) |
| GB (1) | GB767978A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3335007A (en) * | 1962-06-15 | 1967-08-08 | Gevaert Photo Prod Nv | Silver halide diffusion transfer process |
| US3347674A (en) * | 1966-02-04 | 1967-10-17 | Gevaert Photo Prod Nv | Process of forming images according to the silver complex diffusion transfer process |
| US3433634A (en) * | 1964-02-05 | 1969-03-18 | Gevaert Photo Prod Nv | Diffusion transfer process |
| US3450535A (en) * | 1962-01-25 | 1969-06-17 | Lumoprint Zindler Kg | Diffusion transfer receiving layer with high soda content |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2414743A1 (en) * | 1978-01-11 | 1979-08-10 | Kodak Pathe | Black=and=white silver halide photographic prod. - contg. ballasted reducing agent and developable with basic activator |
-
0
- BE BE529348D patent/BE529348A/xx unknown
-
1954
- 1954-06-02 CH CH329758D patent/CH329758A/en unknown
- 1954-06-04 FR FR1101926D patent/FR1101926A/en not_active Expired
- 1954-06-08 GB GB16813/54A patent/GB767978A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3450535A (en) * | 1962-01-25 | 1969-06-17 | Lumoprint Zindler Kg | Diffusion transfer receiving layer with high soda content |
| US3335007A (en) * | 1962-06-15 | 1967-08-08 | Gevaert Photo Prod Nv | Silver halide diffusion transfer process |
| US3433634A (en) * | 1964-02-05 | 1969-03-18 | Gevaert Photo Prod Nv | Diffusion transfer process |
| US3347674A (en) * | 1966-02-04 | 1967-10-17 | Gevaert Photo Prod Nv | Process of forming images according to the silver complex diffusion transfer process |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1101926A (en) | 1955-10-12 |
| BE529348A (en) | |
| CH329758A (en) | 1958-05-15 |
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