Merchant & Gould P.C.
Master information magnetic recording apparatus and method for manufacturing magnetic recording medium in which information is recorded by using this
The master information recording apparatus 100 includes a master information carrier, a master information carrier facing member, and a magnetic field applying member. A ferromagnetic thin film pattern formed on the surface of the master information carrier includes not less than two kinds of different patterns each having a different pattern angle showing an angle with respect to the direction of the relative movement between a magnetic head and a rotating magnetic recording medium. The magnetic field applying unit applies a magnetic field along the direction, which is perpendicular to the direction shown by an angle that is smaller than the pattern angle of the maximum pattern and larger than the minimum pattern angle of the pattern among the not less than two kinds of patterns.
Matsushita Electric Industrial Co., Ltd.
B G G
B82Y G11B G11B
inventional inventional inventional
Keizo Yasuaki Masaya Kouji Taizou
Miyata Ban Sakaguchi Taniguchi Hamada