To suppress the generation of burned matter at a magnetic head and spacing loss and to prevent the increase of an error rate by holding a compd. having a pyridine skeleton and having ≥2 coordination seats in a burning preventive agent.
Ligand has complex formability with metal atoms therefore, if the ligand is held in the magnetic recording medium, complex forming reaction arises with the metal oxide formed on the magnetic head surface to each other and the metal oxide turns to a complex which is easily desorbable. The ligand is, however, coordinated and adsorbed on the magnetic powder contained in the magnetic layer as well, by which the complex forming reaction with the metal oxide is hindered and the effect of removing the metal oxide of the ligand is impaired. If, thereupon, a titanate coupling agent and carboxylic acid are made to coexist therein, these compds. are adsorbed on the surfaces of the magnetic powder and the coordination and adsorption of the ligand to the magnetic powder are hindered and consequently, the ligand contributes to the complex formation with the metal oxide of the magnetic head. The accumulation of the burned matter on the magnetic head does not arise any more.
KISHII NORIYUKI
SUZUKI JUNKO
WATANABE HARUO
KOBAYASHI TAKESHI
KURIHARA KENICHI
MIYAZAKI TAKAHIRO
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