| Patent application number | Description | Published |
|---|
| 20090141399 | MAGNETIC RECORDING MEDIUM, METHOD FOR PRODUCING THEREOF, AND MAGNETIC RECORDING AND REPRODUCING APPARATUS - A magnetic-recording medium which is provided on a nonmagnetic substrate with at least an orientation-controlling layer for controlling the orientation of a layer formed directly thereon, a perpendicularly magnetic layer having an easily magnetizing axis oriented mainly perpendicularly relative to the nonmagnetic substrate, and a protective layer. The perpendicularly magnetic layer includes two or more magnetic layers, at least one of the magnetic layers is a layer having Co as a main component and containing Pt as well and containing an oxide, and at least another of the magnetic layers is a layer having Co as a main component and containing Cr as well and containing no oxide. | 06-04-2009 |
| 20090237838 | MAGNETIC RECORDING MEDIA AND METHOD OF MANUFACTURING THE SAME, AND MAGNETIC RECORDING/REPRODUCTION DEVICE - A method of manufacturing magnetic recording media with a high areal recording density, in which there write bleeding during magnetic recording is eliminated by reducing insofar as possible the coercive force and remanent magnetization in areas between magnetic tracks, is provided. The method of manufacture can produce magnetic recording media | 09-24-2009 |
| 20090290250 | MAGNETIC RECORDING MEDIUM, METHOD FOR PRODUCTION THEREOF AND MAGNETIC RECORDING AND REPRODUCING DEVICE - A discrete track-type magnetic recording medium ( | 11-26-2009 |
| 20090290255 | METHOD OF MANUFACTURING MAGNETIC RECORDING MEDIA, MAGNETIC RECORDING MEDIA AND MAGNETIC READ/WRITE DEVICE - A manufacturing method which is capable of easily and inexpensively manufacturing discrete track-type magnetic recording media is provided. | 11-26-2009 |
| 20100007985 | METHOD FOR PRODUCING MAGNETIC MEDIUM, MAGNETIC RECORD REPRODUCTION DEVICE, AND MAGNETIC RECORDING MEDIUM - One object of the present invention is to provide a method for producing a magnetic recording medium which has excellent magnetic separation properties of the magnetic recording pattern, the present invention providing a method for producing a magnetic recording medium having a magnetic recording pattern which is magnetically separated, comprising the steps of: after laminating at least a magnetic layer and a carbon protective layer on a non-magnetic substrate in this order, partially irradiating with a reactive plasma containing carbon and a halogen or reactive ions which are generated in the reactive plasma on a surface of the carbon protective layer, and thereby forming a halogenated carbon protective layer, which is obtained by partially halogenating the carbon protective layer, and the magnetic recording pattern separated magnetically which is obtained by partially improving the magnetic layer. | 01-14-2010 |
| 20100015356 | IN-LINE FILM FORMING APPARATUS AND MANUFACTURING METHOD OF MAGNETIC RECORDING MEDIUM - An in-line film forming apparatus is provided which prevents uneven processing from occurring when reactive plasma treatment or ion irradiation treatment is performed on a substrate held by a carrier. A carrier ( | 01-21-2010 |
| 20100053797 | METHOD FOR MANUFACTURE OF MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCTION DEVICE - A method for manufacturing a magnetic recording medium includes the steps of depositing a magnetic layer on at least one of surfaces of a nonmagnetic substrate and injecting atoms partially in the magnetic layer, thereby demagnetizing parts having admitted the injected atoms or imparting amorphousness thereto, to form a magnetically separated magnetic recording pattern. The step of injecting includes the steps of applying resist to the at least one surface subsequent to the step of depositing, partially decreasing a thickness of the resist and irradiating a surface of the resist with atoms, thereby inducing partial injection of the atoms to the magnetic layer through portions of the resist decreased in thickness. | 03-04-2010 |
| 20100053813 | METHOD FOR MANUFACTURING MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCING APPARATUS - A method for manufacturing a magnetic recording medium ( | 03-04-2010 |
| 20100149680 | METHOD OF MANUFACTURING MAGNETIC RECORDING MEDIUM, MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING REPRODUCING APPARATUS - The present invention provides a method of manufacturing a magnetic recording medium where at least a magnetic layer is formed on a non-magnetic substrate and a magnetically separated magnetic recording pattern is formed on the magnetic layer, including: a magnetic recording pattern forming process of forming magnetic recording areas that are constructed with convex portions and boundary areas that are constructed with concave portions between the magnetic recording area as the magnetic recording pattern on the magnetic layer; followed by a protective layer forming process of forming a protective carbon layer by using a high-frequency plasma chemical vapor deposition method and by applying a negative bias to the non-magnetic substrate to make the protective carbon layer on the magnetic recording area thinner than the protective carbon layer on the boundary area. | 06-17-2010 |
| 20100165504 | METHOD OF PRODUCING MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING AND READING DEVICE - The present invention aims to provide a method of producing a magnetic recording medium which is a method of producing a magnetic recording medium having a magnetically-separated magnetic recording pattern, the method including: forming a magnetic layer on a non-magnetic substrate; then exposing a surface of the magnetic layer partially to reactive plasma, or a reactive ion generated in the plasma to amorphize the portion of the magnetic layer. | 07-01-2010 |
| 20100196596 | DOUBLE-SIDED COATING APPARATUS AND METHOD FOR DOUBLE-SIDED COATING WITH COATING SOLUTION - Provided are a double-sided coating apparatus and a method for double-sided coating with a coating solution configured to uniformly apply a coating solution to both surfaces of a substrate having a central opening in a simple process while preventing ingress of the coating solution to the central opening. A coating apparatus | 08-05-2010 |
| 20100232052 | PROCESS FOR PRODUCING MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING/REPRODUCTION APPARATUS - Provided is a process for making a magnetic recording medium having a magnetically partitioned magnetic recording patterns, which comprises the following three steps (1), (2) and (3), conducted in this order: (1) a step of forming a magnetic layer on a non-magnetic substrate; (2) a step of removing surface layer portions of regions for magnetically partitioning the magnetic layer; and (3) a step of exposing the thus-exposed regions of the magnetic layer, from which the surface layer portions have been removed, to a reactive plasma or a reactive ion, to modify the magnetic characteristics of the regions of magnetic layer, whereby a magnetic recording pattern is formed which are magnetically partitioned by the regions of magnetic layer having the modified characteristics. Thus, a magnetic recording medium having an enhanced recording density and minimizing letter bleeding at writing can be made with a high efficiency. | 09-16-2010 |
| 20100232056 | METHOD FOR MANUFACTURING MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING/REPRODUCING DEVICE - Provided is a process for manufacturing a magnetic recording medium having a magnetically partitioned magnetic recording patterns, which comprises the following steps, conducted in the order: (1) step of forming a magnetic layer on a non-magnetic substrate, (2) step of exposing the surface of regions of the magnetic layer to a reactive plasma or a reactive ion, which regions are to magnetically partition the magnetic layer for forming a magnetically partitioned magnetic recording pattern, and (3) step of exposing the magnetically partitioned magnetic layer to an inert gas irradiation. Preferably, a step of removing surface layer portions of said regions of the magnetic layer is carried out after the step (1) but before the step (2). The surface of the magnetic layer of produced magnetic recording medium exhibits good resistance to corrosion caused by oxidation or halogenation. | 09-16-2010 |
| 20100277829 | METHOD FOR PRODUCING MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING/REPRODUCING APPARATUS - A method for producing a magnetic recording medium having a magnetically partitioned magnetic recording pattern on at least one surface of a nonmagnetic substrate, characterized by comprising a step of reacting portions of a magnetic layer, formed on the non-magnetic substrate, with ozone to modify magnetic properties of said portions of the magnetic layer for forming the magnetically partitioned magnetic recording pattern. The magnetic layer can be a two-layer structure comprising a magnetic layer having a granular structure and formed thereon a magnetic layer having a non-granular structure. The produced magnetic recording medium exhibits a greatly enhanced recording density while recording/reproducing characteristics equal to or better than those of the heretofore proposed magnetic recording mediums are maintained, and it can be produced with an enhanced efficiency. | 11-04-2010 |
| 20110003176 | PROCESS FOR FORMING CONCAVO-CONVEX PATTERNS, AND PROCESS FOR MANUFACTURING MAGNETIC RECORDING MEDIA USING THE SAME - An object of the present invention is to provide a process for forming concavo-convex patterns which uses a resist-forming material having excellent oxygen etching resistance and long working life and which enables to carry out the imprinting (mold pressing) with good rectangular shape properties at normal temperature. | 01-06-2011 |
| 20110007414 | MAGNETIC RECORDING MEDIUM, METHOD OF MANUFACTURING MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING/REPRODUCING APPARATUS - Disclosed is a method of manufacturing a magnetic recording medium capable of effectively and reliably removing foreign materials on the surface of a magnetic recording medium, preventing a mask layer from remaining on the surface of the magnetic recording medium, and forming the pattern of a magnetic layer with high productivity. The method of manufacturing a magnetic recording medium includes: a step of forming a magnetic layer on a non-magnetic substrate; a step of forming a mask layer on the magnetic layer; a step of patterning the mask layer to form a mask pattern; a step of forming a magnetic recording pattern on the magnetic layer using the mask pattern; a step of burnishing the surface of the mask pattern with an abrasive; and a step of removing the mask pattern. | 01-13-2011 |
| 20110056908 | METHOD AND APPARATUS FOR MANUFACTURING MAGNETIC RECORDING MEDIUM - There is provided a method for manufacturing a magnetic recording medium which manufactures media by employing the same in-line apparatus and which is capable of reducing the contamination due to the handling and of enhancing the productivity,
| 03-10-2011 |
