GB755425A - Production of positive photographic images by transfer - Google Patents
Production of positive photographic images by transferInfo
- Publication number
- GB755425A GB755425A GB1719/54A GB171954A GB755425A GB 755425 A GB755425 A GB 755425A GB 1719/54 A GB1719/54 A GB 1719/54A GB 171954 A GB171954 A GB 171954A GB 755425 A GB755425 A GB 755425A
- Authority
- GB
- United Kingdom
- Prior art keywords
- emulsion layer
- rollers
- auxiliary support
- transfer
- 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
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
- G03C8/42—Structural details
- G03C8/52—Bases or auxiliary layers; Substances therefor
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
- G03D9/00—Diffusion development apparatus
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/22—Structural association of coolant tubes with headers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
755,425. Photographic positive images by transfer. AGFA AKT.-GES. FUR PHOTOFABRIKATION. Jan. 20, 1954 [Jan. 22, 1953], No. 1719/54. Class 98 (2). In the silver-salt diffusion process in which the unreduced silver halide of an exposed and developed emulsion layer is transferred to, and reduced in, a reception layer which is in intimate contact with the emulsion layer during development, the emulsion layer is coated on a thin base as of paper, and such is temporarily attached to an auxiliary support for passage through the developing solution. Difficulties as by folding or distortion of the thin base in the developing solution, especially when several positives are taken from one emulsion layer, are thereby avoided, and the use of thin bases is advantageous in needing shorter exposure times in reflex printing. The auxiliary support may be of cellulose ester or ether, or polyvinyl chloride, polystyrene or polyamide and may approximate to the size of the emulsion layer but may be designed as an endless band to permit processing of several prints in one step. Temporary attachment may be effected by use of a roughened surface on the auxiliary support or by a colloid layer thereon, or by clamping or gripping means. As shown, Fig. 1, a container 1 with developing solution 2 has a lid 3 with openings 4, 6 for entrance of the negative and positive materials respectively and means 19 to guide these to and between two endless bands, 15 travelling in a V-path over rollers 8, 13, 12 and constituting the auxiliary support, and 16 looped over rollers 14, 11; of which the pair 13, 14 are pressure rollers for image transfer. Guideway opening 7 is provided for exit of the materials. Belt 16 and its rollers may be replaced by a single roller of circumference sufficient to press on belt 15 at the positions of rollers 13, 12. The apparatus of Fig. 2 allows simultaneous transfer of positive images to both sides of a reception layer and for this the latter is introduced through a further opening 5, to meet, similarly, two emulsion layers introduced at 4, 6 respectively for pressure and conveyance to exit 7. Specifications 387,876, 433,469, 614,155 and 654,630 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE321139X | 1953-01-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB755425A true GB755425A (en) | 1956-08-22 |
Family
ID=6159519
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1719/54A Expired GB755425A (en) | 1953-01-22 | 1954-01-20 | Production of positive photographic images by transfer |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE525934A (en) |
CH (1) | CH321139A (en) |
FR (1) | FR1095673A (en) |
GB (1) | GB755425A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1085425B (en) * | 1956-10-19 | 1960-07-14 | Oswald Slickers Dipl Ing | Device for copying by the diffusion process |
DE1130700B (en) * | 1957-02-27 | 1962-05-30 | Oswald Slickers Dipl Ing | Device for copying by the diffusion process |
-
0
- BE BE525934D patent/BE525934A/xx unknown
-
1953
- 1953-12-12 CH CH321139D patent/CH321139A/en unknown
-
1954
- 1954-01-20 GB GB1719/54A patent/GB755425A/en not_active Expired
- 1954-01-22 FR FR1095673D patent/FR1095673A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE525934A (en) | |
FR1095673A (en) | 1955-06-06 |
CH321139A (en) | 1957-04-30 |
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