Patent ID: 6761618
Filing Date: 2004-07-13
Classification: B24B,B82Y,G11B

Abstract:
A method of manufacturing a magnetic stamper/imprinter for use in patterning of magnetic recording media by means of a contact printing process, comprising sequential steps of:(a) providing a stamper/imprinter comprising a body of a magnetic material having an imprinting surface including a topographical pattern formed therein corresponding to a pattern to be formed in the surface of a magnetic or magneto-optical (MO) recording medium by said contact printing process and comprising a patterned plurality of spaced-apart recesses with a plurality of non-recessed areas therebetween, wherein said imprinting surface includes a plurality of defects comprising surface blemishes and stains, magnetic particles, and non-magnetic particles; (b) initially removing said surface blemishes, stains, and magnetic particles; and (c) then removing or rendering said non-magnetic particles benign to said contact printing process.