Patent ID: 7575705
Filing Date: 2009-08-18
Classification: B82Y,G11B,Y10S,Y10T

Abstract:
1. A method for manufacturing a magnetic recording medium manufacturing imprint stamper comprising: coating a surface of a stamper material with a first resist film; forming a mold pattern of quadrilaterals in a first transfer region in the first resist film of the stamper material corresponding to a servo region of a magnetic recording medium by an artificial drawing method; etching the surface of the stamper material with the first resist film as a mask to preserve a flat surface in a first non-transfer region of the stamper material located in conformity with a data region of the magnetic recording medium so as to form a servo region master imprint stamper which corresponds to the magnetic recording medium using a sector servo system; applying a second resist film on a substrate and forming recess portions in a region of the second resist film formed on the substrate while locating the region in conformity with the data region of the magnetic recording medium; filling the recess portions in a surface of the substrate with a self-assembled material; giving a phase-separation to the self-assembled material in the substrate; processing by etching the recess portions in the substrate surface so as to form a molded pattern with a plurality of dots arrayed in a form of a hexagonal lattice; electroforming the molded pattern to thereby produce a data region master imprint stamper having a mold pattern with a plurality of dots arrayed in a form of a hexagonal lattice in a second transfer region corresponding to the data region of the magnetic recording medium; transferring the mold pattern of the servo region master imprint stamper and the data region master imprint stamper in succession to a same surface of a master substrate so as to form a master having a molded pattern in the same surface thereof; and electroforming the molded pattern of the master to thereby form a medium imprint stamper having a mold pattern.