| Patent application number | Description | Published |
|---|
| 20080268294 | Magnetic disk, method of manufacturing the magnetic disk and method of evaluating the magnetic disk - A protection layer containing carbon as a major component is deposited by plasma CVD. The protection layer has film quality such that, when a spectrum is obtained by excluding photoluminescence from a Raman spectrum in a wavenumber band from 900 cm | 10-30-2008 |
| 20100112379 | PERPENDICULAR MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING THE SAME - A vertical magnetic recording disc ( | 05-06-2010 |
| 20100119878 | MAGNETIC RECORDING MEDIUM - Provided is a magnetic recording medium which maintains high S/N ratio and coercive force (Hc) and has high recording density, even with fine magnetic particles, by further improving crystal orientation of a magnetic recording layer. The magnetic recording medium is provided with an orientation control layer ( | 05-13-2010 |
| 20100196619 | MAGNETIC DISK AND MANUFACTURING METHOD THEREOF - In a magnetic disk having a magnetic layer, a protection layer, and a lubrication layer formed on a substrate in this order, a surface free energy γS of a surface of the magnetic disk derived by an extended Fowkes equation is greater than 0 and no greater than 24 mN/m. γSd (dispersion force component of surface free energy) forming the surface free energy γS is greater than 0 and no greater than 17 mN/m, γSp (dipole component of surface free energy) forming the surface free energy γS is greater than 0 and no greater than 1 mN/m, and γSh (hydrogen bonding force component of surface free energy) forming the surface free energy γS is greater than 0 and no greater than 6 mN/m. | 08-05-2010 |
| 20100196740 | PERPENDICULAR MAGNETIC RECORDING MEDIUM AND MANUFACTURING METHOD OF THE SAME - A perpendicular magnetic recording medium of the invention is characterized by having, on a disk substrate | 08-05-2010 |
| 20100209740 | PERPENDICULAR MAGNETIC RECORDING MEDIUM - [Object] The present invention provides a perpendicular magnetic recording medium that can reduce noise by further size reduction and isolation of magnetic grains in a magnetic recording layer and can increase the recording density by improvement of the SNR. | 08-19-2010 |
| 20100215992 | SINGLE-SIDED PERPENDICULAR MAGNETIC RECORDING MEDIUM - A magnetic recording medium used for perpendicular magnetic recording, the magnetic recording medium comprising: a substrate having a first surface and a second surface opposite to the first surface; a magnetic recording medium constituent layer formed on the first surface of the substrate, the magnetic recording medium constituent layer including at least a magnetic recording layer; a non-magnetic metal film formed on the second surface of the substrate; and a carbon-based protective film formed on the non-magnetic metal film. | 08-26-2010 |
| 20100279151 | PERPENDICULAR MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING THE SAME - A perpendicular magnetic recording medium includes a substrate, a soft magnetic layer, a pre-underlayer, an underlayer, and a main recording layer serving as a magnetic recording layer. The pre-underlayer contains seed crystal grains that serve as a base for crystal grains of the underlayer, and an addition substance that is added between the seed crystal grains and composed of an element having an atomic radius smaller than that of an element forming the seed crystal grains. | 11-04-2010 |
| 20100323221 | MAGNETIC DISK AND MAGNETIC DISK MANUFACTURING METHOD - Provided is a magnetic disk ( | 12-23-2010 |
| 20110111262 | METHOD FOR MANUFACTURING PERPENDICULAR MAGNETIC RECORDING MEDIUM AND PERPENDICULAR MAGNETIC RECORDING MEDIUM - An object of the present invention is to provide a method of manufacturing a perpendicular magnetic recording medium ( | 05-12-2011 |
