| 摘要 |
PURPOSE:To maintain lubricity for a long time without using any lubricant so that a recording medium is not damaged and to reduce the wear of the medium, by using a carbon material or a composite material of a carbon material and thermosetting resin for the supporting body of a magnetic head. CONSTITUTION:A glassy carbon having characteristics of 1.49 apparent specific gravity, 112 Shore hardness, and 3kcal/mhr deg.C coefficient of thermal conductivity is cut to have the dimensions (in mm.) shown by the diagram and one surface A which contacts with a recording medium is finished to have a mirror surface. Thus a magnetic head supporting body 7 is manufactured. It is also possible to use a composite material prepared by compression moulding a 70vol% phenolic glassy carbon fiber and 30vol% general purpose resol resin for laminating for this purpose. When such a magnetic head supporting body is used, the lubricity can be maintained for a long time without using any lubricant and the surface of a recording medium is not damaged and worn down. Therefore, this magnetic head supporting body is suitable for vertical magnetic recording system. |
