Method of manufacturing discrete track recording medium and...

Details Method of manufacturing discrete track recording medium and... Method of manufacturing discrete track recording medium and...

2011-04-19

2011-04-19

McDonald, Rodney G (Department: 1724)

Chemistry: electrical and wave energy

Processes and products

Coating, forming or etching by sputtering

C204S192320, C204S192350, C204S192370, C216S022000

Reexamination Certificate

active

07927467

ABSTRACT:
According to one embodiment, a method of manufacturing a discrete track recording medium includes forming protruded magnetic patterns on a substrate, and repeating processes of depositing a nonmagnetic material so as to be filled in recesses between the magnetic patterns and etching back the nonmagnetic material two or more times with rotating the substrate in a plane thereof by an angle less than one revolution.

REFERENCES:
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patent: 2005-267736 (2005-09-01), None
patent: 2007-012119 (2007-01-01), None
patent: 2007-213730 (2007-08-01), None
patent: 2007-257801 (2007-10-01), None
International Search Report dated Sep. 22, 2008 for PCT/JP2008/061676.
Japanese Office Action dated Oct. 26, 2010.

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