| 摘要 |
PURPOSE:To impart necessary sliding resistance strength to the surface of a coating compd. coated on a substrate and to prevent attraction between a magnetic head and the surface lubricating agent of a magnetic recording medium by coating the surface lubricating agent in the form of speckles onto the surface of said coating compd. CONSTITUTION:The surface lubricating agent 5 is coated in the form of speckles on the surface of the coating compd. coated on the substrate 1. Namely, the coating compd. formed of a solvent, filler 2, magnetic material 3 and binder 4 by kneader kneading ball mill kneading filtering stages is uniformly coated on the surface of the aluminum substrate 1 finished to a specular surface by diamond grinding. The surface lubricating agent 5 is further coated in the form of speckles on the surface of the coating compd. after the coating compd. is subjected to orienting, curing and working of the coated film. The coating of the surface lubricating agent 5 to a required thickness on the coating compd. and the reduction of the effective contact area of the magnetic head and the surface lubricating agent 5 of the magnetic recording medium are, therefore, possible. The necessary sliding resistance strength is thus imparted to the coating compd. by thick coating of the surface lubricating agent 5 thereon and the attraction of the magnetic head and the surface lubricating agent 5 of the magnetic recording medium is prevented. |
