公开(公告)号：JPH11203659A

公开(公告)日：1999-07-30

申请号：JP29975598

申请日：1998-10-21

Applicant: EMTEC MAGNETICS GMBH

Inventor： WIEGEMANN HANS-BERTRAM ,  STEHLE PETER ,  TRAUB HANSJOERG ,  JAKUSCH HELMUT DR

IPC: G11B5/716 ,  G11B5/73 ,  G11B5/738 ,  G11B5/852 ,  G11B5/704

Abstract: PROBLEM TO BE SOLVED: To provide a general-purpose magnetic recording medium having neither magnetic nor mechanical anisotropy, but being improved in wear resistance and having an excellent mechanical stability at the same time. SOLUTION: This medium is a magnetic recording medium which has at least two layers 9, 8 formed upper and lower, and the lower layer 8 contains acicular magnetic powder having a coercive force of 5-40 kA/m and magnetization of 20-70 nTm /g. While the layers are still in a wet state after they have been formed, they are subjected to a magnetic non-orientation processing of magnetic recording medium, and are made non-isotropic magnetically and mechanically. The magnetic recording medium thus manufactured is suitable for a floppy disk having a high storage capacity exceeding 100 Mbits.