Master information carrier for magnetic transfer

摘要

A master information carrier has on its surface a signal area where an embossed pattern formed by protruding portions and recessed portions and representing a signal pattern to be transferred has been formed. The shortest bit length of the embossed pattern is 300nm or shorter, and the embossed pattern is formed so that the total of the areas of the upper surfaces of the protruding portions (11b) of the embossed pattern is smaller than the total of the areas of inter-protruding-portions (11a) in the signal area.