GB878064A - Improvements in or relating to photographic reproduction processes - Google Patents
Improvements in or relating to photographic reproduction processesInfo
- Publication number
- GB878064A GB878064A GB2028459A GB2028459A GB878064A GB 878064 A GB878064 A GB 878064A GB 2028459 A GB2028459 A GB 2028459A GB 2028459 A GB2028459 A GB 2028459A GB 878064 A GB878064 A GB 878064A
- Authority
- GB
- United Kingdom
- Prior art keywords
- emulsion
- layer
- developer
- silver halide
- reception layer
- 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
- 238000000034 method Methods 0.000 title abstract 2
- 239000000839 emulsion Substances 0.000 abstract 6
- 239000000463 material Substances 0.000 abstract 4
- 229910052709 silver Inorganic materials 0.000 abstract 3
- 239000004332 silver Substances 0.000 abstract 3
- -1 silver halide Chemical class 0.000 abstract 3
- 239000000049 pigment Substances 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- 229910019142 PO4 Inorganic materials 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 239000000084 colloidal system Substances 0.000 abstract 1
- 238000009792 diffusion process Methods 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 238000010348 incorporation Methods 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 1
- 239000010452 phosphate Substances 0.000 abstract 1
- 238000012545 processing Methods 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 238000012546 transfer Methods 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
878,064. Photographic diffusion transfer materials and processes. ILFORD Ltd. June 1, 1960 [June 12, 1959; July 20,1959], Nos. 20284/59 and 24878/59. Class 98(2) The material comprises a transparent film support, a reception layer containing nuclei, a white pigmented colloid layer or alternatively the presence of pigment in the reception layer, and a thin layer of gelatino silver halide emulsion. Exposure from the emulsion side and processing in the presence of a silver halide solvent as by immersion or application of developer solely to the emulsion surface, provides a positive image in the reception layer which can be viewed through the support against the background of the pigment. Preferably a neutralizing material such as acid phosphate is included in the reception layer, and the layer sequence has the advantage that such substance is inoperative until the developer penetrates the emulsion. Numerous further features and modifications include use of a viscous developer, retention of such on the emulsion by the presence of a further sheet which may or may not be removed, use of an outer, light-insensitive emulsion layer to provide a reservoir of silver halide and increase intensity of the positive image, and the incorporation of antihalation substances. A specific example of material and developer is provided. Specifications 614,155, 654,631, 746,948, 751,955 and 875,644 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2487859 | 1959-07-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB878064A true GB878064A (en) | 1961-09-27 |
Family
ID=10218684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2028459A Expired GB878064A (en) | 1959-07-20 | 1959-06-12 | Improvements in or relating to photographic reproduction processes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB878064A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3532497A (en) * | 1963-08-05 | 1970-10-06 | Eastman Kodak Co | Nuclei for use in solvent transfer systems |
-
1959
- 1959-06-12 GB GB2028459A patent/GB878064A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3532497A (en) * | 1963-08-05 | 1970-10-06 | Eastman Kodak Co | Nuclei for use in solvent transfer systems |
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