http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-628847-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_47c6933c3150b9552357484624ca4a52 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C7-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-815 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C5-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C7-25 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C5-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C7-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-815 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C7-25 |
| filingDate | 1947-02-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1949-09-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-628847-A |
| titleOfInvention | Photographic material and method |
| abstract | 628,847. Producing relief images by means of luminescent materials. TECHNICOLOR MOTION PICTURE CORPORATION. Feb. 11, 1947, No. 5959. Convention date, June 11, 1946. [Class 98 (ii)] [Also in Group XL (a)] A photographic sheet comprises a support, a fluorescent coating which emits secondary radiation of two different bands of wavelengths in response to illumination with primary radiation of two other different bands of wavelengths, each of the bands of the bands of the primary radiation exciting a different secondary band, and a layer which is sensitive to said different bands of secondary radiation, said layer incorporating material such as dyes which absorb the different bands of secondary radiation in different degrees. Preferably the fluorescent coating is arranged between the support and the sensitive layer which is insensitive to the primary radiation which is blue-green to yellow light. As shown, a printing material P comprises a support 1 of cellulose acetate or cellulose nitrate, two intermediate fluorescent coatings 2, 2<SP>1</SP> and two outer silver halide emulsion layers 3. 3<SP>1</SP>. The fluorescent layers are produced by coating the support with a mixture, in acetone, of powdered crystalline zinc and cadmium sulphides activated with silver, Rhodamine B and cellulose acetate, and when excited with greenishyellow light emit orange-red light while when excited with blue-green light they emit deep red light. The emulsion layers are sensitized to orange-red and deep red light by dyes such as pinacyanol and dicyanin respectively and dyes such as Alkali Fast Green 10G or a disazo cyan dye as disclosed in Specification 607,792 are included to confine the latent image to the support side of the emulsion and to allow, by means of their differential absorption of orangered and deep red light, variations in contrast to be obtained by selecting the colour of the primary printing light and hence the secondary fluorescent light which exposes the emulsion. The material P may be employed in the production of relief images by exposing through a negative N in contact with the emulsion in which the record is to be printed by the fluorescent layer, developing with a tanning, e.g. pyro, developer and washing away the unexposed gelatin. The relief images, if in register, may represent complemental colour aspects of a scene so that on dyeing they produce a colour picture when viewed by transmitted light. If the film is to be used as a double. sided dye matrix for imbibition printing the images are preferably identical and are employed to print either consecutively or simultaneously two separate imbibition copies. Specification 626,319 also is referred to. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4259588-A |
| priorityDate | 1946-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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