公开(公告)号：JPH06168437A

公开(公告)日：1994-06-14

申请号：JP20168893

申请日：1993-08-13

Applicant: BASF MAGNETICS GMBH

Inventor： GERUTO FUITSUSHIYAA ,  ARENTO BUERUNAA ,  HARUTOMUUTO HIBUSUTO

IPC: C23F4/00 ,  C23C14/02 ,  C23C14/20 ,  G11B5/64 ,  G11B5/66 ,  G11B5/73 ,  G11B5/84 ,  G11B5/85 ,  G11B5/851

Abstract: PURPOSE: To provide a magnetic recording medium which has improved recording characteristics and is formed with a magnetic layer on a substrate sheet subjected to a plasma treatment. CONSTITUTION: This magnetic recording medium consists of a sheet-like polymer substrate subjected to the plasma treatment on at least one surface of its main surfaces and the ferromagnetic layer of 10 to 1000nm thickness formed on the main surface subjected to the plasma treatment of the substrate. The main surface of the substrate for formation of such ferromagnetic layer is previously treated by at least two kinds of different plasma methods, such as ion beam etching and sputter etching.