GB972065A - Improvements in processes of photographic reproduction - Google Patents
Improvements in processes of photographic reproductionInfo
- Publication number
- GB972065A GB972065A GB304360A GB304360A GB972065A GB 972065 A GB972065 A GB 972065A GB 304360 A GB304360 A GB 304360A GB 304360 A GB304360 A GB 304360A GB 972065 A GB972065 A GB 972065A
- Authority
- GB
- United Kingdom
- Prior art keywords
- agent
- jan
- bisulphite
- sheet
- layer containing
- 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
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)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Color Printing (AREA)
Abstract
972,065. Photographic transfer-reversal procedure. KODAK Ltd. Jan. 26, 1961 [Jan. 28 1960], No. 3043/60. Heading G2C. A sheet material comprises a layer containing (a) development nuclei or nuclei-forming substances, (b) a silver halide solvent, (c) a blueblack toning agent and (d) an addition compound formed from a bisulphite and an aldehyde or a ketone. The agent (c) may be any of those of Specifications 861,255, 972,062, 972,063 or 972,064 and the purpose of (d) is to shorten the time of toning therewith, positive transfer images resulting from a contact time with the negative emulsion layer of the order of 5 to 10 seconds only. In an example the sheet is of paper having a gelatin layer containing colloidal silver sulphide, hypo 5, 5-dimethyl- 4-thiohydantoin and sodium formaldehyde bisulphite with, additionally, baryta and free formaldehyde: negative emulsion and developer for use therewith are quoted. The process may be operated similarly with agent (c)present otherwise than in the receiving sheet, and variations of procedure of customary nature are indicated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB304360A GB972065A (en) | 1960-01-28 | 1960-01-28 | Improvements in processes of photographic reproduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB304360A GB972065A (en) | 1960-01-28 | 1960-01-28 | Improvements in processes of photographic reproduction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB972065A true GB972065A (en) | 1964-10-07 |
Family
ID=9750882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB304360A Expired GB972065A (en) | 1960-01-28 | 1960-01-28 | Improvements in processes of photographic reproduction |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB972065A (en) |
-
1960
- 1960-01-28 GB GB304360A patent/GB972065A/en not_active Expired
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