Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
September 12, 2006
Patent Application Number
10635640
Date Filed
August 7, 2003
Patent Primary Examiner
Patent abstract
A master information carrier has on its surface an irregularity pattern representing information to be magnetically transferred to a magnetic recording medium held in contact with the surface of the master information carrier. The parts of the surface of the master information carrier which is brought into contact with the magnetic recording medium are in the range of 0.3 nm to 10.0 nm in center plane mean surface roughness SRa.
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