| 摘要 |
PURPOSE:To improve the durability of a magnetic recording medium by the constitution that a magnetic recording layer is made of a ferromagnetic metallic layer thin film and the lubricant layer on the magnetic recording layer is made of material different to each other at the ends and the center part in the broadwise direction. CONSTITUTION:In using a tape for a V.T.R., ends of a magnetic tape and the surface of the magnetic recording layer close to the ends slide with a rotary cylinder, a fixed cylinder and a regulating post or the like and no flaw occurs on the tape by selecting the lubricant made of these materials and a type of material reducing friction. On the other hand, the lubricant having a type of material reducing the friction to the sliding to the rotary magnetic head is selected for the center part, i.e., a part where video tracks are arranged. The lubricant layer in Fig. consists of an end part lubricant layer 4B arranged to the surface where the magnetic recording layer 2 is slid with the magnetic head and cylinder, and a center part lubricant layer 4A (parts other than ends are called the center parts). |
