Patent application number | Description | Published |
20080248409 | Reflective Mask Blank, Reflective Mask and Methods of Producing the Mask Blank and the Mask - A reflective mask blank has a substrate ( | 10-09-2008 |
20100118441 | METHOD FOR MANUFACTURING MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING AND REPRODUCING APPARATUS - There is provided a method for manufacturing a magnetic recording medium which can easily produce a magnetic recording medium, the magnetic recording medium having a plurality of magnetically separated recording layers suitable as the recording layers in a discrete track medium or patterned medium, and also having excellent surface flatness, in which spaces between the adjacent recording layers are filled in with a non-magnetic material. | 05-13-2010 |
20100128378 | METHOD FOR MANUFACTURING MAGNETIC RECORDING MEDIUM, MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING-REPRODUCING APPARATUS - A magnetic recording medium which does not easily cause a material containing Fe or Co to corrode is disclosed. The method for manufacturing a magnetic recording medium | 05-27-2010 |
20100182717 | METHOD FOR MANUFACTURING MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING-REPRODUCING APPARATUS - Provided is a method for manufacturing, in a simple process, a magnetic recording medium having a distinct magnetic recording pattern formed thereon. A method for manufacturing a magnetic recording medium having a magnetically-separated magnetic recording pattern MP, the method at least including; a first step of forming a first magnetic layer | 07-22-2010 |
20110059235 | METHOD FOR PRODUCING MAGNETIC RECORDING MEDIUM AND PRODUCING APPARATUS THEREOF - Provided are a method of producing a magnetic recording medium with improved environmental resistance, especially, corrosion resistance and an apparatus used therefor. In producing a magnetic recording medium having a magnetic recording pattern on a magnetic recording layer formed on at least a surface of a nonmagnetic substrate using an in-line film formation apparatus, the method comprising: mounting a nonmagnetic substrate on the carrier, the nonmagnetic substrate having at least the magnetic recording layer and a mask layer corresponding to the magnetic recording pattern laminated thereon in this order; forming the magnetic recording pattern by having areas of the magnetic recording layer that are not covered with the mask layer subjected to a reactive plasma treatment or an ion irradiation treatment; removing the mask layer from the magnetic recording layer; and removing the nonmagnetic substrate from the carrier, wherein each of the chambers has a decompressed atmosphere inside while the carrier passes through each of the chambers and each of the processes are conducted continuously while being blocked from the ambient air. | 03-10-2011 |
20120044596 | METHOD OF PRODUCING MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCING APPARATUS - There is provided a method of producing a magnetic recording medium having a magnetically separated magnetic recording pattern formed therein, without oxidizing or halogenating a surface of a magnetic layer, and also without contaminating the surface with dust and without complicating a production process, | 02-23-2012 |
20120113549 | MANUFACTURING METHOD FOR MAGNETIC RECORDING MEDIUM, MAGNETIC RECORDING/REPRODUCING DEVICE - Disclosed is a method of manufacturing a magnetic recording medium having a clear magnetic recording pattern through a simple process. The method includes: forming a magnetic layer on the non-magnetic substrate; forming a mask layer which covers a surface of the magnetic layer; forming a resist layer on the mask layer; patterning the resist layer using a stamp; patterning the mask layer using the resist layer, forming a recess by partially removing a portion of the magnetic layer not covered by the mask layer; forming a non-magnetic layer which covers a surface where a recess is formed; flattening a surface of the non-magnetic layer until the mask layer is exposed; removing an exposed mask layer; removing a protruding portion of the non-magnetic layer; and forming a protective layer which covers a surface where the protruding portion was removed. | 05-10-2012 |
20120200956 | METHOD FOR PRODUCING MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING AND REPRODUCING DEVICE - A method for producing a magnetic recording medium which includes: forming a magnetic layer on a non-magnetic substrate; forming a dissolution layer on the magnetic layer; forming a mask layer on the dissolution layer; patterning the dissolution layer and the mask layer so as to have a pattern corresponding to a magnetic recording pattern; partially modifying or removing a part of the magnetic layer and the mask layer not covered with the dissolution layer; and dissolving the dissolution layer and removing the dissolution layer together with the mask layer which is on the dissolution layer from the surface of the magnetic layer. The dissolution layer is formed by coating a solution containing an organic silicon compound dissolved in an organic solvent on the magnetic layer, and solidifying the coated chemical solution in the step in which the dissolution layer is formed on the magnetic layer. | 08-09-2012 |