MAGNETIC RECORDING MEDIUM

摘要

PURPOSE:To obtain a magnetic recording medium which satisfies output characteristic and durability simultaneously at a high degree by allowing a Ti compd. and Si compd. to exist at a specific ratio on the surface of magnetic powder. CONSTITUTION:The magnetic recording medium provided with the magnetic coated film contg. the magnetic powder and a binder for dispersing and binding the same on a base is formed by incorporating the magnetic powder having a compd. contg. Ti and Si into the particle surface in such a manner that the average content ratio of Ti to the magnetic powder is 0.002-0.150 by weight and the average content ratio of Si to the magnetic powder is 0.002-0.150. The average content ratio of the Ti and Si to be contained in the magnetic powder to the magnetic powder is more preferably particularly in the range where Ti is 0.005-0.100 and Si is 0.003-0.080 and is most preferably in the range where Ti is 0.010-0.080 and Si is 0.005-0.050. The electromagnetic conversion characteristic is deteriorated if the content of Ti is too large. In addition, the wear of a head by sliding contact of the head and magnetic recording medium is excessive. The effect is hardly obtainable if the content thereof is too small. The electromagnetic conversion characteristic is considerably deteriorated if the content of Si is too large.