| 摘要 |
PURPOSE:To obtain a magnetic recording medium having superior magnetic characteristics, superior surface smoothness of the magnetic layer and superior durability and contg. magnetic powder with high dispersibility and fillability by hardening a coated film contg. a specified coupling agent and a specified oligomer under radiation so as to produce the magnetic layer. CONSTITUTION:A coated film contg. a titanium coupling agent represented by the general formula, an oligomer obtd. by bonding acrylic acid or methacrylic acid to both the terminals of the condensation product of polyol with aldehyde by esterification, and magnetic powder, is formed on a substrate and hardened by irradiation to produce a magnetic layer. The preferred amount of the coupling agent to be used is 0.1-10wt% of the amount of the magnetic powder in the magnetic layer, and that of the oligomer to be used is 20-60wt% of the total amount of the powder and the coupling agent. |
