http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008241602-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_44b2ac87aeadb161b83426d9cf6c4bdc |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B5-70678 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B5-733 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B5-714 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B5-7023 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B5-66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B5-84 |
| filingDate | 2008-03-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_97620bf442a8001597dfb0d46b72b161 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bfe59609cc62c2c5a214d7c1efb20ffb http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d00718faef0cffbc7267e29808d4f522 |
| publicationDate | 2008-10-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2008241602-A1 |
| titleOfInvention | Magnetic recording medium and process for producing the same |
| abstract | The present invention provides a magnetic recording medium wherein both of a reduction in the particle diameter of a ferromagnetic powder and an increase in the filling ratio of the powder in a magnetic layer are attained and the magnetic layer is excellent in surface smoothness and electromagnetic conversion property. A magnetic recording medium comprising at least a non-magnetic support, a lower non-magnetic layer on one surface of the non-magnetic support, and an upper magnetic layer on the lower non-magnetic layer, wherein the lower non-magnetic layer contains at least carbon black, a non-magnetic inorganic powder other than carbon black, and a binder resin, the upper magnetic layer contains at least a ferromagnetic powder and a binder resin containing a polar group, and the ferromagnetic powder is a ferromagnetic metal powder having an average major axis length of 10 to 50 nm, or a hexagonal ferrite magnetic powder having an average plate diameter of 5 to 40 nm, and the polar-group-containing binder resin is contained in the upper magnetic layer in such an amount that a proportion of said polar group to unit specific surface area based on the BET method of the ferromagnetic powder is set into a range of 0.18 to 0.35 μmol/m 2 . |
| priorityDate | 2007-03-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 43.