公开(公告)号：JPH05334657A

公开(公告)日：1993-12-17

申请号：JP33288392

申请日：1992-12-14

Applicant: BASF MAGNETICS GMBH

Inventor： NORUBERUTO SHIYUNAIDAA ,  AUGUSUTO REENAA ,  URUZURA KURAIN ,  BUERUNAA RENTSU ,  BUERUNAA BARUTSU ,  ARUBERUTO KOORU ,  GIYUNTAA BETEINGAA

IPC: C08K9/06 ,  C08K9/04 ,  C08L101/00 ,  C09D5/23 ,  F02B75/02 ,  G11B5/708 ,  G11B5/73

Abstract: PURPOSE: To provide a magnetic recording medium low in surface roughness, excellent in wear resistance of layer surface, having magnetic layer stability at a high temp. of 85 deg.C and high humidity condition and capable of preventing the lowering of output level and the block of a tape in an extreme operating condition. CONSTITUTION: The magnetic recording medium is obtained by preparing dispersion, in which an anisotropic magnetic material, and usual additives are dispersed in a polymer binder solution in an organic solvent, applying on a non- magnetic base body to film form, orienting by placing the anisotropic magnetic material in magnetic field and hardening the formed magnetic layer. And 0.3-5wt.% finely pulverized polysilicic acid made hydrophobic by a chemically bonded carbon is allowed to exist in the magnetic layer.

公开(公告)号：JPH0773643A

公开(公告)日：1995-03-17

申请号：JP22993293

申请日：1993-09-16

Applicant: BASF MAGNETICS GMBH

Inventor： MANFUREETO BUEEBAA ,  NORUBERUTO SHIYUNAIDAA ,  NORUBERUTO SHIEFUAA ,  GIYUNTAA BETEINGAA ,  RAINHARUTO SHIYUTORANSUKII ,  BUERUNAA BARUTSU

IPC: G11B23/087

Abstract: PURPOSE: To obtain a tape pressing element, especially the tape pressing element having an improved and advantageous embodiment for a recording system wherein the number of track exceeds ten lines and a stationary head is provided with. CONSTITUTION: A tape/head contact is produced by pressing a magnetic tape 11 to the head 14. Here, the weight per unit length of the fiber is specified to be 0.1-5g/10000m, and the weight per unit area of the fiber is specified to be about 20-300g/m . The fiber is mutually, in particular, mechanically combined, and at least a part of the tape pressing element 8 is formed in the shape of a layer 9. The pressure is uniformly applied to all over the width of the magnetic tape 11 with the layer 9.