Magnetic transfer master medium

摘要

Signal omissions are prevented from occurring in the magnetic data transferred to a slave medium (2) by magnetic transfer employing a magnetic transfer master medium. A master medium (3,4) formed of a material and having a thickness wherein the bow stiffness = Ebd 3 /12 thereof is in the range greater than or equal to 0.03 N · m 2 and less than or equal to 27 N · m 2 , for a sample piece thereof having a width defined of 1 m and an arbitrary lengthy and utilizing the Young's modulus E obtained by use of a vibration reed method on sample having a length of 50mm, an arbitrary width b, and a thickness d.