Patent ID: 8858809
Filing Date: 2014-10-14
Classification: G11B

Abstract:
1. A method of manufacturing a magnetic recording medium, the method comprising: forming a magnetic recording layer on a substrate; forming a carbon-containing mask layer on the magnetic recording layer; forming a silicon-containing mask layer on the carbon-containing mask layer; forming a strip layer on the silicon-containing mask layer; forming a patterned resist layer on the strip layer; forming a pattern of projections and recesses in the silicon-containing mask layer by (i) etching the strip layer and the silicon-containing mask layer to transfer a pattern of the patterned resist layer to the silicon-containing mask layer and (ii) then removing the strip layer remaining on the silicon-containing mask layer using a wet-etching process; transferring the pattern of projections and recesses that has been formed in the silicon-containing mask layer to the carbon-containing mask layer using a dry-etching process; and forming a pattern of projections and recesses in the magnetic recording layer by (i) transferring the pattern of projections and recesses that has been formed in the carbon-containing mask layer to the magnetic recording layer using a dry-etching process and (ii) then removing the carbon-containing mask layer remaining on the magnetic recording layer using a dry-etching process.