| WD MEDIA (SINGAPORE) PTE. LTD. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120129009 | Perpendicular Magnetic Recording Disc | 05-24-2012 |
| 20120127601 | LUBRICANT COMPOUND FOR MAGNETIC DISK AND MAGNETIC DISK - A lubricant compound for a magnetic disk is provided which can realize further reduction of the magnetic spacing and moreover, has high reliability under a lower floating amount of the magnetic head involved with the recent rapid increase in the recording density and under extremely severe environmental resistance involved with diversification of the applications. | 05-24-2012 |
| 20120127599 | MAGNETIC DISK AND MANUFACTURING METHOD THEREOF - A magnetic disk is provided which is excellent in durability of the magnetic disk or particularly in LUL durability and CFT characteristics and has high reliability under a decreased floating amount of the magnetic head accompanying the recent rapid increase in a recording density and extremely severe environmental resistance accompanying diversification of the applications. | 05-24-2012 |
| 20120077060 | EVALUATION METHOD OF MAGNETIC DISK, MANUFACTURING METHOD OF MAGNETIC DISK, AND MAGNETIC DISK - An evaluation method that can easily evaluate properties of a carbon protective film and a lubricant on a magnetic-disk surface or particularly, an evaluation method of a magnetic disk in which the properties of the magnetic-disk surface can be evaluated accurately so that a strict demand for interactions between the magnetic-disk surface and a head can be met is provided. In a state in which an element portion of the magnetic head provided with the head element portion that projects by thermal expansion is projected, after being brought into contact with a predetermined radial position on the surface of the rotating magnetic disk, the head is further made to perform seeking in a state in which the element portion is projected by a specified amount, whereby the properties of the carbon film or the lubricant formed on the magnetic-disk surface is evaluated. | 03-29-2012 |
| 20120075740 | Thermally Assisted Magnetic Recording Disk, Manufacturing Method Thereof, And Magnetic Recording Method - The invention provides a magnetic disk that solves (1) a problem of cross-talk that cannot be solved even by an existing thermally assisted recording method or a discrete method (DTM or the like), (2) a problem of surface flatness, which an existing embedding type DTM or the like has, and (3) a problem of a difference in thermal expansion coefficient between materials when a thermally assisted method is applied to the DTM, and that (4) does not necessitate a special medium structure, and is excellent in a surface flatness and economically and functionally high in realizability. A DTM manufactured by ion implantation is excellent in the surface flatness, and can solve the cross-talk problem by conducting the thermally assisted recording at a temperature between a Curie temperature (Tcn) of a portion where ions are implanted (non-recording region) and a Curie temperature (Tcr) of a portion where ions are not implanted (recording region). | 03-29-2012 |
| 20120070692 | Perpendicular Magnetic Disc - [Problem] To make a film thinner while keeping a function as an auxiliary recording layer, and improve an SNR and an overwrite characteristic. | 03-22-2012 |
| 20120069466 | APPARATUS OF MAGNETIC DISC - An object of the present invention is to further improve a recording density in a magnetic disk apparatus using a shingle write system. | 03-22-2012 |
| 20120066896 | METHOD OF PRODUCING A PERPENDICULAR MAGNETIC DISC - An object of the invention is to achieve thinning while maintaining a function required for an auxiliary recording layer, thereby achieving improvement of SNR. | 03-22-2012 |
| 20110311841 | MAGNETIC DISK AND METHOD FOR MANUFACTURING SAME - Provided are a magnetic disk comprising a granular magnetic recording layer which causes less noise even with a recording capacity thereof of 250 G or more bits per square inch; and a method for manufacturing the same. The magnetic disk according to the present invention comprises: a granular magnetic recording layer ( | 12-22-2011 |
| 20110299194 | METHOD OF MANUFACTURING MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING MEDIUM - [Problem] The concentration distribution in a perpendicular direction of ions implanted in a magnetic recording layer of a perpendicular magnetic recording medium is made a suitable one corresponding to a layer implanted with ions. | 12-08-2011 |
| 20110268990 | PERPENDICULAR MAGNETIC DISC - An object of the present invention is to achieve thinning of an auxiliary recording layer while maintaining the function thereof to improve SNR. | 11-03-2011 |
| 20110244119 | PERPENDICULAR MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING THE SAME - A vertical magnetic recording disc ( | 10-06-2011 |
| 20110223446 | PERPENDICULAR MAGNETIC RECORDING MEDIUM - An object of the present invention is to provide a perpendicular magnetic recording medium the SNR of which is further improved while a high coercive force Hc is secured so that a higher recoding density can be achieved. | 09-15-2011 |
| 20110212346 | PERPENDICULAR MAGNETIC RECORDING MEDIUM AND PROCESS FOR MANUFACTURE THEREOF - An object of the present invention is to provide a perpendicular magnetic recording medium the SNR of which is improved by reducing noise thought to be due to an auxiliary recording layer so that a higher recording density can be achieved, and a method of manufacturing the same. | 09-01-2011 |
| 20110206947 | METHOD OF PRODUCING A PERPENDICULAR MAGNETIC RECORDING MEDIUM - By improving sliding durability while ensuring a high SNR, an improvement in reliability and a further increase in recording density are to be achieved. | 08-25-2011 |
| 20110171495 | PERPENDICULAR MAGNETIC RECORDING MEDIUM - An object is to provide a perpendicular magnetic recording medium including a ground layer that prevents corrosion, while achieving a primary object of promoting finer magnetic particles of a magnetic recording layer and isolation of these magnetic particles. | 07-14-2011 |
| 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 |
| 20110102944 | METHOD OF PRODUCING A PERPENDICULAR MAGNETIC RECORDING MEDIUM AND PERPENDICULAR MAGNETIC RECORDING MEDIUM - An object of the present invention is to provide a perpendicular magnetic recording medium including a suitable lubricating layer with sufficient durability, moisture resistance, and contamination resistance and also maintaining an R/W characteristic. In a typical structure of the present invention, a method of manufacturing a perpendicular magnetic recording medium | 05-05-2011 |
| 20110097604 | PERPENDICULAR MAGNETIC RECORDING MEDIUM - An object of the present invention is to provide a perpendicular magnetic recording medium capable of reducing noise in an electromagnetic transducing characteristic in a configuration including a magnetic recording layer of a granular structure containing Co and an auxiliary recording layer. The perpendicular magnetic recording medium of the present invention includes: on a non-magnetic substrate, a first magnetic recording layer | 04-28-2011 |
| 20110097603 | PERPENDICULAR MAGNETIC RECORDING MEDIUM AND PROCESS FOR MANUFACTURE THEREOF - An object of the present invention is to provide a perpendicular magnetic recording medium in which each space between crystal grains of a first magnetic recording layer is so designed as to allow the layer to also have a function as a continuous layer, and a method of manufacturing a perpendicular magnetic recording medium. In a perpendicular magnetic recording medium | 04-28-2011 |
| 20110097600 | VERTICAL MAGNETIC RECORDING MEDIUM AND METHOD FOR MAKING VERTICAL MAGNETIC RECORDING MEDIUM - An object of the present invention is to provide a perpendicular magnetic recording medium | 04-28-2011 |
| 20110039125 | MAGNETIC RECORDING MEDIUM AND METHOD FOR MANUFACTURING MAGNETIC RECORDING MEDIUM - A method for manufacturing a magnetic recording medium for perpendicular magnetic recording includes the steps of forming a first magnetic layer which has magnetic crystal grains exhibiting perpendicular magnetic anisotropy and nonmagnetic substances for magnetically separating the magnetic crystal grains from each other at grain boundaries of the magnetic crystal grains, forming a second magnetic layer which has magnetic grains exchange-coupled to the magnetic crystal grains, a grain boundary width of the magnetic grains being smaller than a grain boundary width of the magnetic crystal grains, and forming separation regions which magnetically separate tracks from each other in regions between the tracks of the magnetic recording medium in at least the second magnetic layer. The separation regions are disposed substantially only in the second magnetic layer of the first magnetic layer and the second magnetic layer. | 02-17-2011 |
