| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C2005-3007
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C5-305
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C5-3035 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C5-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-061 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C5-305
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C5-30 |
| filingDate |
2003-06-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2aa45b497315eb52473d2545e6b25983
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6f00b94a4c7c601fa48b7d96e34dad77
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_83877b2c24748f21151ce7732812e138
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_91224eb6506bea43389532c1c25a9de8 |
| publicationDate |
2004-02-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2004023149-A1 |
| titleOfInvention |
Method for developing a high contrast photographic material containing a polyhydrazide nucleating agent |
| abstract |
The present invention relates to a method for developing an exposed high contrast photographic silver halide material, said photographic material comprising a support bearing at least one silver halide emulsion layer, containing at least one hydrazide nucleating agent. n According to the invention, the nucleating agent has the formula (I) n n n and the photographic material is developed in a hydroquinone-free developer, comprising a main developing agent of the ascorbic acid or ascorbic acid salt type, and as auxiliary developing agent a mixture of 3-pyrazolidones of which at least one has the formula (II): n n n wherein at least one of the radicals R 3 to R 9 contains a solubilizing group. n This combination enables photographic materials with ultrahigh contrast to be obtained. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004034014-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11034669-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7235538-B2 |
| priorityDate |
2002-06-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |