http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-668647-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_aa8b9d961233ec809fc25327de816e24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3b97f18c2ab5650d655a94b3f613c820 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C7-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C7-12 |
| filingDate | 1949-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1952-03-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-668647-A |
| titleOfInvention | Improvements in or relating to plates or films for colour photography and cinematography |
| abstract | 668,647. Colour photography. BOUDOT, E. M., and ANDRE, J. M. J. P. d'. July 6, 1949 [July 7, 1948], No. 17831/49. Class 98 (ii). A sensitive four-colour screen plate or film is made by placing a fine-grain gelatine-silver halide material in a camera, photographing a parallel line pattern thereon as by exposure to white wires stretched over a backing of dull black velvet, but regulating the photographic action as by short exposure or by use of a violet filter so that only the surface of the material is affected, colour developing or developing and mordant-dyeing the pattern, for example to blue, repeating this to produce a perpendicular line pattern coloured for example to yellow, so that the points of intersection give a resulting tint, for example green, uniformly exposing, or exposing to the same pattern at 45 degrees and developing and dyeing similarly, for example to red. The silver halide remaining in the layer is used for formation of the silver image of the subject photographed without further treatment if it was, originally, panchromatic; or with dipping or panchromatizing if it was not. Due, however, to the loss in sensitivity due to the processing operations and to absorption by the pattern itself, this material is especially suitable for use as positive; for negative purposes the material is fixed and hardened as with hypo and chrome alum after its last dyeing, immersed in a solvent for the support, such as acetone or methyleellosolve acetate for cellulose ester or hydrofluoric acid if the support is made of glass and placed in contact under pressure and heat against a panchromatic emulsion with interposition of a thin layer of gelatine, the support of the screen being thereafter removed. |
| priorityDate | 1948-07-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 21.