http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S62222421-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_73ebc284a55d5daf0e209d6186c9e65c |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B5-708 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B5-66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B5-64 |
| filingDate | 1986-03-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2809737b2a7ecc20783e7496c5cbb011 |
| publicationDate | 1987-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S62222421-A |
| titleOfInvention | Magnetic recording medium |
| abstract | PURPOSE: To improve an SN ratio and to increase a medium margin by incorporating 0.5W15wt% Mn into a Co-Ni-P alloy film constituting a magnetic recording medium. n CONSTITUTION: A nonmagnetic substrate is immersed in an electroless magnetic plating bath consisting of a cobalt sulfate, nickel sulfate, sodium hypophosphite, sodium tartrate, sodium malate, ammonium sulfate, etc., and the Co-Ni-P alloy film is deposited to about 1,000Å thickness on the substrate while the pH and temp. are maintained at prescribed values to provide a magnetic layer. Manganese sulfate is incorporated at 0.5W1.5wt% into the plating bath in this stage to obviate an increase of the max. value of coercive force until the film thickness attains 1,000Å. The magnetic layer which has the large SN ratio and obviates the fluctuation of the coercive force is thus obtd. even if the plating bath is continuously used. n COPYRIGHT: (C)1987,JPO&Japio |
| priorityDate | 1986-03-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.