公开(公告)号：WO1995001637A1

公开(公告)日：1995-01-12

申请号：PCT/JP1994001030

申请日：1994-06-27

Applicant: TDK CORPORATION

Inventor： TDK CORPORATION ,  HANDA, Takashi ,  TAMAI, Kiminori

IPC: G11B05/712

CPC classification number: G11B5/7013 ,  G11B5/712 ,  Y10S428/90 ,  Y10T428/256 ,  Y10T428/2982 ,  Y10T428/2991

Abstract: A magnetic recording medium comprising a non-magnetic support and, formed thereon, a magnetic layer containing a binder and a magnetic powder having the surface mainly comprising carbon and/or iron carbide. The magnetic layer contains an organic dye compound having at least one polar group selected from hydroxyl, carboxyl, sulfo and salts thereof, and the binder contains an amino group and/or an ammonium salt group. This medium is improved in the dispersion of a magnetic coating and also in surface properties, magnetic characteristics, and electromagnetic transduction performance.

Abstract translation: 一种磁记录介质，包括非磁性载体，并在其上形成含有粘合剂的磁性层和具有主要包含碳和/或碳化铁的表面的磁性粉末。 磁性层含有具有至少一个选自羟基，羧基，磺基及其盐的极性基团的有机染料化合物，并且粘合剂含有氨基和/或铵盐基团。 该介质在磁性涂层的分散性以及表面性能，磁特性和电磁传导性能方面得到改善。