| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ae4641d555c93673dba4f9a6ddc6563c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7b991553bab7e7f3b1b5e5db91e4a00b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2e45d5c58a08f4c4031b2d90e380d4cb |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C5-164
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C2001-03511
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-035 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-053
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-067
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-061 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-035
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C5-16 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D233-61
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-295
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-053 |
| filingDate |
1997-05-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a510d04e4d27035215aa35b8cea92812
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_20172898dba1b51fc73acdd8bbb03b78 |
| publicationDate |
1997-11-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-9742545-A1 |
| titleOfInvention |
Silver-halide recording material to produce negatives with reduced fog and ultrahard-gradation |
| abstract |
Photographic silver-halide materials for producing negative images with ultrahard-gradation contrast, which contain a hydrazine compound and a contrast-boosting amino compound and/or phosphonium compound, demonstrate a marked tendency to form 'black fog' which results in inadequate acutance. By adding 200 to 2500 mg per mol of silver of a polyvinyl lactam to the emulsion, the fog is inhibited and acutance is improved without reducing sensitivity. The invention can be used to produce images during reproduction in the pre-printing stage. |
| priorityDate |
1996-05-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |