http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1393895-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_01dc8a8a3ae90ebd3658b65c494e2a4d |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-4989 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S430-166 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C5-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B41M5-38235 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-49827 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C5-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C5-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-498 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-72 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-382 |
| filingDate | 1971-07-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1975-05-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1393895-A |
| titleOfInvention | Silver salt material containing a dihydropyridine for use in thermography |
| abstract | 1393895 Silver salt material containing a dihydropyridine AGFA-GEVAERT 7 July 1972 [20 July 1971] 34045/71 Heading G2C A photo-sensitive material comprising a photodeactivatable reductor capable of reducing a silver soap at elevated temperature is imagewise exposed, and then uniformly heated while being in intimate contact with a sheet material comprising a reducible non-light-sensitive silver salt and 1,4- dihydropyridine of the formula:- where R 1 is H or 1-5C alkyl; each of R 2 and R 5 is H or alkyl; each of R 3 and R4 is CN or a substituent containing a carbonyl group directly linked to the 1, 4-dihydropyridine ring; and R 6 is H, alkyl or aryl, thereby transferring non- deactivated reductor to the sheet material and forming with the aid of the 1, 4-dihydropyridine a visible image thereon. The sheet material may be uniformly heated at 50‹-200‹C. The photosensitive material may contain a further reducing agent together with a catalytic amount of photolytically reducible silver halide formed from the non-light-sensitive silver salt and being in catalytic proximity with the silver salt in which case also the 1, 4-dihydropyridine acts as an auxiliary reducing agent, but this material after imagewise exposure is simply uniformly heated to produce a visible image. The non-light-sensitive silver salt may be a silver salt of an aliphatic carboxylic acid containing at least 14C, e.g. silver behenate or stearate. The photo-deactivatable reductor may be 4-methoxy-1-naphthol or 2-(pchlorophenyl)-acetoacetonitrile (see Example 1). The silver metal images obtained using the 1, 4- dihydropyridine as auxiliary reducing agent have improved colour density. |
| priorityDate | 1971-07-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.